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fc29fd821d
1234932 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Miquel Raynal
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fc29fd821d |
nvmem: core: Rework layouts to become regular devices
Current layout support was initially written without modules support in mind. When the requirement for module support rose, the existing base was improved to adopt modularization support, but kind of a design flaw was introduced. With the existing implementation, when a storage device registers into NVMEM, the core tries to hook a layout (if any) and populates its cells immediately. This means, if the hardware description expects a layout to be hooked up, but no driver was provided for that, the storage medium will fail to probe and try later from scratch. Even if we consider that the hardware description shall be correct, we could still probe the storage device (especially if it contains the rootfs). One way to overcome this situation is to consider the layouts as devices, and leverage the native notifier mechanism. When a new NVMEM device is registered, we can populate its nvmem-layout child, if any, and wait for the matching to be done in order to get the cells (the waiting can be easily done with the NVMEM notifiers). If the layout driver is compiled as a module, it should automatically be loaded. This way, there is no strong order to enforce, any NVMEM device creation or NVMEM layout driver insertion will be observed as a new event which may lead to the creation of additional cells, without disturbing the probes with costly (and sometimes endless) deferrals. In order to achieve that goal we create a new bus for the nvmem-layouts with minimal logic to match nvmem-layout devices with nvmem-layout drivers. All this infrastructure code is created in the layouts.c file. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Tested-by: Rafał Miłecki <rafal@milecki.pl> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20231215111536.316972-7-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Miquel Raynal
|
1172460e71 |
nvmem: Move and rename ->fixup_cell_info()
This hook is meant to be used by any provider and instantiating a layout just for this is useless. Let's instead move this hook to the nvmem device and add it to the config structure to be easily shared by the providers. While at moving this hook, rename it ->fixup_dt_cell_info() to clarify its main intended purpose. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20231215111536.316972-6-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Miquel Raynal
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1b7c298a4e |
nvmem: Simplify the ->add_cells() hook
The layout entry is not used and will anyway be made useless by the new layout bus infrastructure coming next, so drop it. While at it, clarify the kdoc entry. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20231215111536.316972-5-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Miquel Raynal
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ec9c08a1cb |
nvmem: Create a header for internal sharing
Before adding all the NVMEM layout bus infrastructure to the core, let's move the main nvmem_device structure in an internal header, only available to the core. This way all the additional code can be added in a dedicated file in order to keep the current core file tidy. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20231215111536.316972-4-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Miquel Raynal
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4a1a40233b |
nvmem: Move of_nvmem_layout_get_container() in another header
nvmem-consumer.h is included by consumer devices, extracting data from NVMEM devices whereas nvmem-provider.h is included by devices providing NVMEM content. The only users of of_nvmem_layout_get_container() outside of the core are layout drivers, so better move its prototype to nvmem-provider.h. While we do so, we also move the kdoc associated with the function to the header rather than the .c file. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20231215111536.316972-3-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Miquel Raynal
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7f38b70042 |
of: device: Export of_device_make_bus_id()
This helper is really handy to create unique device names based on their device tree path, we may need it outside of the OF core (in the NVMEM subsystem) so let's export it. As this helper has nothing patform specific, let's move it to of/device.c instead of of/platform.c so we can add its prototype to of_device.h. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20231215111536.316972-2-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Greg Kroah-Hartman
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e909abe885 |
coresight: Updates for Linux v6.8
Updates for the hwtracing subsystem includes : - Support for CoreSight TPDM DSB set - Support for tuning Cycle count Threshold for CoreSight ETM via perf - Support for TRBE on ACPI based systems - Support for choosing buffer mode in ETR for sysfs mode - Improvements to HiSilicon PTT driver - Cleanups to Ultrasoc SMB driver - Cleanup .remove callback for various Coresight platform drivers - Remove Leo Yan from Reviewers Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEuFy0byloRoXZHaWBxcXRZPKyBqEFAmV4SmsACgkQxcXRZPKy BqHDHg//UvrXrMpTKXSfuFsb4/UtvT53sBh/pULgdV4hNNF3r3Kp2Ktko/n9ftXu OK8LmaKlQvchbc1NLD8mI7lW2xIRoK3Sax4WKyHFU0Wwh2a8cnAnEmip2z5YjuY1 7UlmY/+SIGTXgtx7P4YUJ0O2FoQwp/7yGAvc0n7xlwFpucuGIpawVsEkviA7OKWo fMEnkdYppqWEQE4r4eN9TTV8mVFPj669aWBmi5lTFX0C0eaX24eJ/yj+fNKcoqWZ HVxhrPK21KcUd9r9FRuavq5GPZXz1DscdkfwwCvNfUMMbkwf3dPLszN4aBF9cWjN mb0YJL2AgjzDawJtPow95tikCpn8jW+Bgd9djEtdw3KwT03K7wjk7clQ79oeobpF ry2bY40V+IMHmQoVK6vXPLQu6HPwn1wcOrAWNNQGVPS18I1FdHnt0wpIcl2uui+W E9vZ6u9WHxToj5TgL9Uobq8hL6HWChJ3Z8uT7wAN35q0JrpvqwvJaZro3g4knMzE YQttPzDKb+VpLh6ZwWNL4p2Y93K4MCITdYouZdGTmYquUKbQgixq7B8WI4qALJML RUlWfGfWTy1mqmQrnvSG23QWcfMqpQLaC/a/gDYjKgFvT84BXcKXYYIcpkbb7+/7 9SigQroz2uq+SgdRjdc2bU1QQ/4LN9XfpgKaLDzdChNLpH6DKO8= =7+gH -----END PGP SIGNATURE----- Merge tag 'coresight-next-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/coresight/linux into char-misc-next Suzuki writes: coresight: Updates for Linux v6.8 Updates for the hwtracing subsystem includes : - Support for CoreSight TPDM DSB set - Support for tuning Cycle count Threshold for CoreSight ETM via perf - Support for TRBE on ACPI based systems - Support for choosing buffer mode in ETR for sysfs mode - Improvements to HiSilicon PTT driver - Cleanups to Ultrasoc SMB driver - Cleanup .remove callback for various Coresight platform drivers - Remove Leo Yan from Reviewers Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> * tag 'coresight-next-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/coresight/linux: (32 commits) coresight: ultrasoc-smb: Use guards to cleanup coresight: ultrasoc-smb: Convert to platform remove callback returning void coresight: trbe: Convert to platform remove callback returning void coresight: replicator: Convert to platform remove callback returning void coresight: funnel: Convert to platform remove callback returning void coresight: etm4x: Convert to platform remove callback returning void coresight: dummy: Convert to platform remove callback returning void coresight: etm4x: Fix width of CCITMIN field coresight-tpdm: Correct the property name of MSR number hwtracing: hisi_ptt: Optimize the trace data committing hwtracing: hisi_ptt: Disable interrupt after trace end Documentation: ABI: coresight-tpdm: Fix Bit[3] description indentation coresight-tpdm: Add nodes for dsb msr support dt-bindings: arm: Add support for DSB MSR register coresight-tpdm: Add nodes for timestamp request coresight-tpdm: Add nodes to configure pattern match output coresight-tpdm: Add nodes for dsb edge control coresight-tpdm: Add node to set dsb programming mode coresight-tpdm: Add nodes to set trigger timestamp and type coresight-tpdm: Add reset node to TPDM node ... |
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Greg Kroah-Hartman
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0e42b5fee8 |
Merge 6.7-rc5 into char-misc-next
We need the char/misc fixes in here as well for testing and to build off of. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Linus Torvalds
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a39b6ac378 | Linux 6.7-rc5 | ||
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Linus Torvalds
|
3a87498869 |
- Make sure tasks are thawed exactly and only once to avoid their state
getting corrupted -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmV1nDUACgkQEsHwGGHe VUqC3Q/9GF3IjEzKZAwTqw9ir2Nq9fFKkDZVT1ZCkXcg3bc6t5Dp68NcMPEoPdNE 6ONaEwKhZxqPyivI7u1ExdZnHYDMRWolZmjs/x19c+g3Zo6QzT+6blMdoWvl6nV2 RD3macPt5w5bcJ8ugSM4ekTQgo4nPU5VhBS52zDARx0W9ufpIk3YKmxmVQjhuV5J z/nfewUuUtAHDxnbF8pRvN8WoSg15Z5iERksdcj8Wagjx79cMAR6liuauJNkj9dP lldG69ODdJeZc9L/SUkLEgYPVaq+G6BOKgWXbzeiRM9LedHN3iQlT9JUttLHN383 NdTbQ6lboViP1O64WuoqJFVDYvY0DvVLUll4URywfT3lPbISGvxhg0Xj+4E8F5W9 A9pB9TDZwRXwrNuRLksaY0v/Glfo7eUr6252aDbgrUovJCDOwfRB+pI4ywpfoL/+ 2eKkJR1mUjoCXirkbYjcm7EhnTSKxiKmCYK7pyol3fJCsK/4bQF7mJ4UyDFIB3Na VXVD41KkMsaAdIQp4HbdduYaPSCQvQee6ahtobQwcxyBWGXRzurTw4ubHlzSeN9F fIfxF9PfSY+So2J9IrU1uYKPvfbUWfU3b1urQPhPvVlbVlZmfG579ek6+4bhagsg UztDRvv9lCxvBskruIMfelAduXsDkDi0UwJ0/TXlPnQGzYlDdeI= =07a8 -----END PGP SIGNATURE----- Merge tag 'sched_urgent_for_v6.7_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler fix from Borislav Petkov: - Make sure tasks are thawed exactly and only once to avoid their state getting corrupted * tag 'sched_urgent_for_v6.7_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: freezer,sched: Do not restore saved_state of a thawed task |
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Linus Torvalds
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537ccb5d28 |
- Make sure perf event size validation is done on every event in the
group -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmV1mfQACgkQEsHwGGHe VUrW9w/9EVMf1/cu1rY4XN68NbOgdfoic2oPan60WJwiYhYto9uA1quR4Q8ziwVh UbuO4e0up1ZCUzutZGFnx0ZHrlQIb0/YTQj8kDKX6m7g8s2Vers7YbkRwneDsNqA JDp58yGXdc1TipVYrKqa0leNrezvaEeoVFPIPKoelzi3673xrlslRseJ/n7vJd4u SnMjT7LQZIlEe/pecz01nHAo6SSwfI/Ynh2WSorHnhSTuE5gMUzJwBYSXvpZ2gyg 207keTiIcrvxgT+a32NMeEYsFFFvpYKFHI5nxxV1pB8AWXdWaNpuYHNItTDIh81D fSb8hu+EpNSWtZYzXl/esgULfMgHXez+4VknTpX/vsbfcV1Yif4aHlZP8tgP6gZ5 QyA2NMA5vJypjzLsAgCyZjpTyEVPYQ3f4+iYg4EGlMlgLgoXtHIV+zP765SzDVkC yPO4xVf+Ypo9AKcGKjBrxyMlRq40zos40k6l2yOjSUlTE2IfOLMhjgVHeLcgD+uv E9pi0/KtfGvrm3nWgIhDtcvd5Jg6vrilaRWl9bAN6g6xgaqLPXuIZbOjPaRpKSNa L32XBMg5fUt4eesZv458qu4Zw1ybHCd6qoe3OieFzW5ocR61O946MHX3kkbpmsWC PzH1mBsPa3F8/utJ06p+9pank3M5yKHdkDPQXfSvImuZ3DPKEGI= =QxHj -----END PGP SIGNATURE----- Merge tag 'perf_urgent_for_v6.7_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf event fix from Borislav Petkov: - Make sure perf event size validation is done on every event in the group * tag 'perf_urgent_for_v6.7_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf: Fix perf_event_validate_size() |
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Linus Torvalds
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5412fed784 |
- Add a forgotten CPU vendor check in the AMD microcode post-loading
callback so that the callback runs only on AMD - Make sure SEV-ES protocol negotiation happens only once and on the BSP -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmV1l4MACgkQEsHwGGHe VUoESQ//WxIdMb/ATNtBRXEM3GRzd/X2he7kXRGVSUeJZMxEOnpVEmo4NtAzXwI7 E2yOk4EJ6QlN+p6/eea5X2FJ5IkpiDKj1jVvU6NxTJiF2I5t1XUjdcXiv05Is+bP 5Cx1ysaznMQYvZUler15NkbLCZvVX5/1V9FthnLpS1d1cvem0NKoH+hVUQHkdHbo /QNzEy+dyii8mp+t6D4QEfjq2Ab7bRbx1FufJcvHy9tFt3u8JsuWI/kHLm5Jk3VN n7Efynluw1wJC3l/18QzrxUCL5LVwrs2LxC0GH42dq9vBp0EJclgsBOh+43cm+Ey ffowP3uJxayngdigRA4ANpfbJL7GHjEtoYlxk/ooI4l2ccNtSdCXn86UVI9q3BiT 60j/qV9r/o0Wl46/BVrT6SXhHlcKm4YchUa53NbOHcU3hBpUuM78WAcqs+63voMq kFqXQVihlJWYYytyFKw6Ng7O6SHR/SMC3uSygG0q2KebiUlVMZSheJin2Od+shhC skD0z2EUzUGuNICFHuxwA2uu6jr/KvkEwDfjczwdE2haUfZLCnOfTjxZmqBbuzJ6 l7lfGjBCpGGtGettjrM8WAuHnL6MzNDI2jVDV3K6bzqQVzk9wjFQjIG9X7c8XjN/ E2IyQxNuiIKVj3GfFOVM9lgJ4C8qwNDa2A46Kad2dKHioiFfMuM= =uIo2 -----END PGP SIGNATURE----- Merge tag 'x86_urgent_for_v6.7_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Borislav Petkov: - Add a forgotten CPU vendor check in the AMD microcode post-loading callback so that the callback runs only on AMD - Make sure SEV-ES protocol negotiation happens only once and on the BSP * tag 'x86_urgent_for_v6.7_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/CPU/AMD: Check vendor in the AMD microcode callback x86/sev: Fix kernel crash due to late update to read-only ghcb_version |
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Linus Torvalds
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0aea22c7ab |
Generic:
* Set .owner for various KVM file_operations so that files refcount the
KVM module until KVM is done executing _all_ code, including the last
few instructions of kvm_put_kvm(). And then revert the misguided
attempt to rely on "struct kvm" refcounts to pin KVM-the-module.
ARM:
* Do not redo the mapping of vLPIs, if they have already been mapped
s390:
* Do not leave bits behind in PTEs
* Properly catch page invalidations that affect the prefix of a nested
guest
x86:
* When checking if a _running_ vCPU is "in-kernel", i.e. running at CPL0,
get the CPL directly instead of relying on preempted_in_kernel (which
is valid if and only if the vCPU was preempted, i.e. NOT running).
* Fix a benign "return void" that was recently introduced.
Selftests:
* Makefile tweak for dependency generation
* -Wformat fix
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"Generic:
- Set .owner for various KVM file_operations so that files refcount
the KVM module until KVM is done executing _all_ code, including
the last few instructions of kvm_put_kvm(). And then revert the
misguided attempt to rely on "struct kvm" refcounts to pin
KVM-the-module.
ARM:
- Do not redo the mapping of vLPIs, if they have already been mapped
s390:
- Do not leave bits behind in PTEs
- Properly catch page invalidations that affect the prefix of a
nested guest
x86:
- When checking if a _running_ vCPU is "in-kernel", i.e. running at
CPL0, get the CPL directly instead of relying on
preempted_in_kernel (which is valid if and only if the vCPU was
preempted, i.e. NOT running).
- Fix a benign "return void" that was recently introduced.
Selftests:
- Makefile tweak for dependency generation
- '-Wformat' fix"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: SVM: Update EFER software model on CR0 trap for SEV-ES
KVM: selftests: add -MP to CFLAGS
KVM: selftests: Actually print out magic token in NX hugepages skip message
KVM: x86: Remove 'return void' expression for 'void function'
Revert "KVM: Prevent module exit until all VMs are freed"
KVM: Set file_operations.owner appropriately for all such structures
KVM: x86: Get CPL directly when checking if loaded vCPU is in kernel mode
KVM: arm64: GICv4: Do not perform a map to a mapped vLPI
KVM: s390/mm: Properly reset no-dat
KVM: s390: vsie: fix wrong VIR 37 when MSO is used
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Linus Torvalds
|
c527f5606a |
powerpc fixes for 6.7 #4
- Fix stack teardown in ftrace_no_trace, seen as crashes doing CPU hotplug
while ftrace is active.
Thanks to: Naveen N Rao
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Merge tag 'powerpc-6.7-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fix from Michael Ellerman:
- Fix stack teardown in ftrace_no_trace, seen as crashes doing CPU
hotplug while ftrace is active.
Thanks to Naveen N Rao.
* tag 'powerpc-6.7-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/ftrace: Fix stack teardown in ftrace_no_trace
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Linus Torvalds
|
99d4cf7659 |
gpio fixes for v6.7-rc5
- fix an error path after a failed export in sysfs code -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEFp3rbAvDxGAT0sefEacuoBRx13IFAmV0wIYACgkQEacuoBRx 13Jt5A//dcrJanDY/ydioCg7FxGWPktQVsquFWELpT+rzVNxGdUTmE/pn3o5axSE +VdwUg6L4kLO85TZkzo3wvGVgf9gSYDXu/sgBRilF9OTmAPCoZrAjMfIYFEelWCs n/dk2VfdG+Hbf5S1JuN0svUAmqzW6xrtGXE5enxLPqexWuB+YFhnUmjWZlIMxHYj MVATWENwFnzl00K1ApXH/Nt0RHa/FRMkTOr3pa7C21tL9s6c4KKq0wLwR9vYLA2e 7wMLKgKhL5jRnjx7PgHL3F/V1AEJzNlPFtmPzvIOz1IQBN5jpsbFfhaI/F6yLuKV bNT3rrKtMaNfvI/RmVXmTSNdhUg5tmL5y+mC0CBOnoUwVC1/DIlxro0PCO9HM+c0 elACsdm531Wmz95hXmh6YeMaEgD+zehH/5N4pd1U67fSJsJuxjhbRByLhQpNMJCz AoppNb8zKYoPYOkl8MyCxLEje0dsAy3UFEYvnLTrTDx5UgxrgISDw2PqxFNzav20 AgrQ8NJzLI2tQVyEhf5PZsozEmgNfKZYZYx93fUIVYys17Mfv5W8s2hr0AOVfinz V/cuqpkfWtATVbLmoBEc86raHz4KKegPs8Q/Kb10xmjtXh76k+Rap4V+/GQjb+Q5 4mhGbttp1WUaY/BVxWKd9myCwhn4sasEYgSUvI1CmVeDCDEqkK4= =Zzhe -----END PGP SIGNATURE----- Merge tag 'gpio-fixes-for-v6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux Pull gpio fix from Bartosz Golaszewski: - fix an error path after a failed export in sysfs code * tag 'gpio-fixes-for-v6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: gpiolib: sysfs: Fix error handling on failed export |
||
|
Linus Torvalds
|
21b73ffcc6 |
USB fixes for 6.7-rc5
Here are some small USB fixes for 6.7-rc5 to resolve some reported issues. Included in here are: - usb gadget f_hid, and uevent fix - xhci driver revert to resolve a much-reported issue - typec driver fix All of these have been in linux-next with no reported issues. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCZXRuNg8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+ymKGgCfSJN2sDwxrExpdUeNkQr0r1DCQpgAn0sx1j65 uldkw4sWZwv7XuuYbx+b =aI4T -----END PGP SIGNATURE----- Merge tag 'usb-6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB fixes from Greg KH: "Here are some small USB fixes for 6.7-rc5 to resolve some reported issues. Included in here are: - usb gadget f_hid, and uevent fix - xhci driver revert to resolve a much-reported issue - typec driver fix All of these have been in linux-next with no reported issues" * tag 'usb-6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: usb: gadget: f_hid: fix report descriptor allocation Revert "xhci: Loosen RPM as default policy to cover for AMD xHC 1.1" usb: typec: class: fix typec_altmode_put_partner to put plugs USB: gadget: core: adjust uevent timing on gadget unbind |
||
|
Linus Torvalds
|
0b5260904b |
Serial driver fixes for 6.7-rc4
Here are some small serial driver fixes for 6.7-rc4 to resolve some reported issues. Included in here are: - pl011 dma support fix - sc16is7xx driver fix - ma35d1 console index fix - 8250 driver fixes for small issues All of these have been in linux-next with no reported issues. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCZXRtSQ8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+ymdlwCfWxCBdF8hkTzLRH8LvZbjXQgn8NkAn223XULM rLiYkIrqk2oQBVC7sC0X =ukSJ -----END PGP SIGNATURE----- Merge tag 'tty-6.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty Pull serial driver fixes from Greg KH: "Here are some small serial driver fixes for 6.7-rc4 to resolve some reported issues. Included in here are: - pl011 dma support fix - sc16is7xx driver fix - ma35d1 console index fix - 8250 driver fixes for small issues All of these have been in linux-next with no reported issues" * tag 'tty-6.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: serial: 8250_dw: Add ACPI ID for Granite Rapids-D UART serial: ma35d1: Validate console index before assignment ARM: PL011: Fix DMA support serial: sc16is7xx: address RX timeout interrupt errata serial: 8250: 8250_omap: Clear UART_HAS_RHR_IT_DIS bit serial: 8250_omap: Add earlycon support for the AM654 UART controller serial: 8250: 8250_omap: Do not start RX DMA on THRI interrupt |
||
|
Linus Torvalds
|
ca20f1622b |
Char/Misc driver fixes for 6.7-rc5
Here are some small fixes for 6.7-rc5 for a variety of small driver subsystems. Included in here are: - debugfs revert for reported issue - greybus revert for reported issue - greybus fixup for endian build warning - coresight driver fixes - nvmem driver fixes - devcoredump fix - parport new device id - ndtest build fix All of these have ben in linux-next with no reported issues. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCZXRxAQ8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+ykphwCfaF0Dh6oajneYbo/pq70+an876uYAnjwALPfr g2EezrYYUAkkPACOd27t =q7gC -----END PGP SIGNATURE----- Merge tag 'char-misc-6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char / misc driver fixes from Greg KH: "Here are some small fixes for 6.7-rc5 for a variety of small driver subsystems. Included in here are: - debugfs revert for reported issue - greybus revert for reported issue - greybus fixup for endian build warning - coresight driver fixes - nvmem driver fixes - devcoredump fix - parport new device id - ndtest build fix All of these have ben in linux-next with no reported issues" * tag 'char-misc-6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: nvmem: Do not expect fixed layouts to grab a layout driver parport: Add support for Brainboxes IX/UC/PX parallel cards Revert "greybus: gb-beagleplay: Ensure le for values in transport" greybus: gb-beagleplay: Ensure le for values in transport greybus: BeaglePlay driver needs CRC_CCITT Revert "debugfs: annotate debugfs handlers vs. removal with lockdep" devcoredump: Send uevent once devcd is ready ndtest: fix typo class_regster -> class_register misc: mei: client.c: fix problem of return '-EOVERFLOW' in mei_cl_write misc: mei: client.c: return negative error code in mei_cl_write mei: pxp: fix mei_pxp_send_message return value coresight: ultrasoc-smb: Fix uninitialized before use buf_hw_base coresight: ultrasoc-smb: Config SMB buffer before register sink coresight: ultrasoc-smb: Fix sleep while close preempt in enable_smb Documentation: coresight: fix `make refcheckdocs` warning hwtracing: hisi_ptt: Don't try to attach a task hwtracing: hisi_ptt: Handle the interrupt in hardirq context hwtracing: hisi_ptt: Add dummy callback pmu::read() coresight: Fix crash when Perf and sysfs modes are used concurrently coresight: etm4x: Remove bogous __exit annotation for some functions |
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|
Linus Torvalds
|
b10a3ccaf6 |
LoongArch fixes for v6.7-rc5
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|
Linus Torvalds
|
b8503b2157 |
- Fixes for broken Loongson firmware
- Fix lockdep splat - Fix FPU states when creating kernel threads -----BEGIN PGP SIGNATURE----- iQJOBAABCAA4FiEEbt46xwy6kEcDOXoUeZbBVTGwZHAFAmV0Kj8aHHRzYm9nZW5k QGFscGhhLmZyYW5rZW4uZGUACgkQeZbBVTGwZHAlWxAAnIPkgXTlsikLKzcja0zY hn0zq07FmLVJ/jhbivr2sUoBRbxZhML4fu0D+IKi3ctrDIn8ulZkUBKCYCmspq6T Y4XmwfUEb3iED5zdKe+GKkyxei6y5YQun8iIqDvcoLe80drv/Gqz3FRp+Sdt5i3n JuumkYopaYp00lLaSfPOFw48+Kmaqj3eFV0L3RVVTDq2G6lBGwK72h2PvlOlMYx2 QFT15tS6mNdlUl+3VqxzD8i+lQ4ghCf9bI+WgQ9NNo9SXvVstz4FFU2FLoXvL6x9 7Bqy/uJ2ICCMPmLy4/QMws49KT4nXzD46paNI3klzvVBfdhsI85j0Zk2VdtTX6mR lxXnwHal02vbJJOebQkC4ZEf8tdmeBE5loipFqSDR95BpQC/92S5povGVfbZPKDZ Bm8jJSFFH32sL4LPRnQEiZpcZx5h8MfJukb40CmVWaOQqePL1yJwEajBgSOKAfrl QiScuk0cXFqbaPfmXDOHZcmpb3Wc3Q/MbID3h7WFeVwXhauKI2Mr3Xa+cpGr7HrT LM1WkWlxhCQKMIRY8kEoUWCBjsKNNEGJgC13ta1d1iSVeGQstAVcxTrWpz2xGcbG T8tNL2+rhlhO64GZ6MtcJEUy72FTOzNglzCWICZFfwk61PJ6Nm7V9oqJXgSDNL9n beHitvV4I/e7PRqR8reTwAg= =u0rZ -----END PGP SIGNATURE----- Merge tag 'mips-fixes_6.7_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux Pull MIPS fixes from Thomas Bogendoerfer: - Fixes for broken Loongson firmware - Fix lockdep splat - Fix FPU states when creating kernel threads * tag 'mips-fixes_6.7_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: MIPS: kernel: Clear FPU states when setting up kernel threads MIPS: Loongson64: Handle more memory types passed from firmware MIPS: Loongson64: Enable DMA noncoherent support MIPS: Loongson64: Reserve vgabios memory on boot mips/smp: Call rcutree_report_cpu_starting() earlier |
||
|
Linus Torvalds
|
9d3bc457a2 |
perf tools fixes for v6.7: 2nd batch
A random set of small bug fixes including: * Fix segfault on AmpereOne due to missing default metricgroup name. * Fix segfault on `perf list --json` due to NULL pointer. Signed-off-by: Namhyung Kim <namhyung@kernel.org> -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQSo2x5BnqMqsoHtzsmMstVUGiXMgwUCZXOIeAAKCRCMstVUGiXM g98/AP9XDmXoOJafRySAz3fCNt25YUMjjsSvtF6/gHK5VgRDmQEAkUjd97BilDfW UHWZ6IpYRZHchJ8kwGBYg9BDM8WTtwI= =NQQF -----END PGP SIGNATURE----- Merge tag 'perf-tools-fixes-for-v6.7-2-2023-12-08' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools Pull perf tools fixes from Namhyung Kim: "A random set of small bug fixes including: - Fix segfault on AmpereOne due to missing default metricgroup name - Fix segfault on `perf list --json` due to NULL pointer" * tag 'perf-tools-fixes-for-v6.7-2-2023-12-08' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: perf list: Fix JSON segfault by setting the used skip_duplicate_pmus callback perf vendor events arm64: AmpereOne: Add missing DefaultMetricgroupName fields perf metrics: Avoid segv if default metricgroup isn't set |
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|
Linus Torvalds
|
2099306c4e |
Six smb3 client fixes
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Merge tag '6.7-rc4-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull smb client fixes from Steve French:
"Six smb3 client fixes:
- Fixes for copy_file_range and clone (cache invalidation and file
size), also addresses an xfstest failure
- Fix to return proper error if REMAP_FILE_DEDUP set (also fixes
xfstest generic/304)
- Fix potential null pointer reference with DFS
- Multichannel fix addressing (reverting an earlier patch) some of
the problems with enabling/disabling channels dynamically
Still working on a followon multichannel fix to address another issue
found in reconnect testing that will send next week"
* tag '6.7-rc4-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: reconnect worker should take reference on server struct unconditionally
Revert "cifs: reconnect work should have reference on server struct"
cifs: Fix non-availability of dedup breaking generic/304
smb: client: fix potential NULL deref in parse_dfs_referrals()
cifs: Fix flushing, invalidation and file size with FICLONE
cifs: Fix flushing, invalidation and file size with copy_file_range()
|
||
|
Tiezhu Yang
|
e2f7b3d8b4 |
LoongArch: BPF: Fix unconditional bswap instructions
We can see that "bswap32: Takes an unsigned 32-bit number in either big-
or little-endian format and returns the equivalent number with the same
bit width but opposite endianness" in BPF Instruction Set Specification,
so it should clear the upper 32 bits in "case 32:" for both BPF_ALU and
BPF_ALU64.
[root@linux fedora]# echo 1 > /proc/sys/net/core/bpf_jit_enable
[root@linux fedora]# modprobe test_bpf
Before:
test_bpf: #313 BSWAP 32: 0x0123456789abcdef -> 0xefcdab89 jited:1 ret 1460850314 != -271733879 (0x5712ce8a != 0xefcdab89)FAIL (1 times)
test_bpf: #317 BSWAP 32: 0xfedcba9876543210 -> 0x10325476 jited:1 ret -1460850316 != 271733878 (0xa8ed3174 != 0x10325476)FAIL (1 times)
After:
test_bpf: #313 BSWAP 32: 0x0123456789abcdef -> 0xefcdab89 jited:1 4 PASS
test_bpf: #317 BSWAP 32: 0xfedcba9876543210 -> 0x10325476 jited:1 4 PASS
Fixes:
|
||
|
Tiezhu Yang
|
772cbe948f |
LoongArch: BPF: Fix sign-extension mov instructions
We can see that "Short form of movsx, dst_reg = (s8,s16,s32)src_reg" in
include/linux/filter.h, additionally, for BPF_ALU64 the value of the
destination register is unchanged whereas for BPF_ALU the upper 32 bits
of the destination register are zeroed, so it should clear the upper 32
bits for BPF_ALU.
[root@linux fedora]# echo 1 > /proc/sys/net/core/bpf_jit_enable
[root@linux fedora]# modprobe test_bpf
Before:
test_bpf: #81 ALU_MOVSX | BPF_B jited:1 ret 2 != 1 (0x2 != 0x1)FAIL (1 times)
test_bpf: #82 ALU_MOVSX | BPF_H jited:1 ret 2 != 1 (0x2 != 0x1)FAIL (1 times)
After:
test_bpf: #81 ALU_MOVSX | BPF_B jited:1 6 PASS
test_bpf: #82 ALU_MOVSX | BPF_H jited:1 6 PASS
By the way, the bpf selftest case "./test_progs -t verifier_movsx" can
also be fixed with this patch.
Fixes:
|
||
|
Hengqi Chen
|
5d47ec2e6f |
LoongArch: BPF: Don't sign extend function return value
The `cls_redirect` test triggers a kernel panic like:
# ./test_progs -t cls_redirect
Can't find bpf_testmod.ko kernel module: -2
WARNING! Selftests relying on bpf_testmod.ko will be skipped.
[ 30.938489] CPU 3 Unable to handle kernel paging request at virtual address fffffffffd814de0, era == ffff800002009fb8, ra == ffff800002009f9c
[ 30.939331] Oops[#1]:
[ 30.939513] CPU: 3 PID: 1260 Comm: test_progs Not tainted 6.7.0-rc2-loong-devel-g2f56bb0d2327 #35 a896aca3f4164f09cc346f89f2e09832e07be5f6
[ 30.939732] Hardware name: QEMU QEMU Virtual Machine, BIOS unknown 2/2/2022
[ 30.939901] pc ffff800002009fb8 ra ffff800002009f9c tp 9000000104da4000 sp 9000000104da7ab0
[ 30.940038] a0 fffffffffd814de0 a1 9000000104da7a68 a2 0000000000000000 a3 9000000104da7c10
[ 30.940183] a4 9000000104da7c14 a5 0000000000000002 a6 0000000000000021 a7 00005555904d7f90
[ 30.940321] t0 0000000000000110 t1 0000000000000000 t2 fffffffffd814de0 t3 0004c4b400000000
[ 30.940456] t4 ffffffffffffffff t5 00000000c3f63600 t6 0000000000000000 t7 0000000000000000
[ 30.940590] t8 000000000006d803 u0 0000000000000020 s9 9000000104da7b10 s0 900000010504c200
[ 30.940727] s1 fffffffffd814de0 s2 900000010504c200 s3 9000000104da7c10 s4 9000000104da7ad0
[ 30.940866] s5 0000000000000000 s6 90000000030e65bc s7 9000000104da7b44 s8 90000000044f6fc0
[ 30.941015] ra: ffff800002009f9c bpf_prog_846803e5ae81417f_cls_redirect+0xa0/0x590
[ 30.941535] ERA: ffff800002009fb8 bpf_prog_846803e5ae81417f_cls_redirect+0xbc/0x590
[ 30.941696] CRMD: 000000b0 (PLV0 -IE -DA +PG DACF=CC DACM=CC -WE)
[ 30.942224] PRMD: 00000004 (PPLV0 +PIE -PWE)
[ 30.942330] EUEN: 00000003 (+FPE +SXE -ASXE -BTE)
[ 30.942453] ECFG: 00071c1c (LIE=2-4,10-12 VS=7)
[ 30.942612] ESTAT: 00010000 [PIL] (IS= ECode=1 EsubCode=0)
[ 30.942764] BADV: fffffffffd814de0
[ 30.942854] PRID: 0014c010 (Loongson-64bit, Loongson-3A5000)
[ 30.942974] Modules linked in:
[ 30.943078] Process test_progs (pid: 1260, threadinfo=00000000ce303226, task=000000007d10bb76)
[ 30.943306] Stack : 900000010a064000 90000000044f6fc0 9000000104da7b48 0000000000000000
[ 30.943495] 0000000000000000 9000000104da7c14 9000000104da7c10 900000010504c200
[ 30.943626] 0000000000000001 ffff80001b88c000 9000000104da7b70 90000000030e6668
[ 30.943785] 0000000000000000 9000000104da7b58 ffff80001b88c048 9000000003d05000
[ 30.943936] 900000000303ac88 0000000000000000 0000000000000000 9000000104da7b70
[ 30.944091] 0000000000000000 0000000000000001 0000000731eeab00 0000000000000000
[ 30.944245] ffff80001b88c000 0000000000000000 0000000000000000 54b99959429f83b8
[ 30.944402] ffff80001b88c000 90000000044f6fc0 9000000101d70000 ffff80001b88c000
[ 30.944538] 000000000000005a 900000010504c200 900000010a064000 900000010a067000
[ 30.944697] 9000000104da7d88 0000000000000000 9000000003d05000 90000000030e794c
[ 30.944852] ...
[ 30.944924] Call Trace:
[ 30.945120] [<ffff800002009fb8>] bpf_prog_846803e5ae81417f_cls_redirect+0xbc/0x590
[ 30.945650] [<90000000030e6668>] bpf_test_run+0x1ec/0x2f8
[ 30.945958] [<90000000030e794c>] bpf_prog_test_run_skb+0x31c/0x684
[ 30.946065] [<90000000026d4f68>] __sys_bpf+0x678/0x2724
[ 30.946159] [<90000000026d7288>] sys_bpf+0x20/0x2c
[ 30.946253] [<90000000032dd224>] do_syscall+0x7c/0x94
[ 30.946343] [<9000000002541c5c>] handle_syscall+0xbc/0x158
[ 30.946492]
[ 30.946549] Code: 0015030e 5c0009c0 5001d000 <28c00304> 02c00484 29c00304 00150009 2a42d2e4 0280200d
[ 30.946793]
[ 30.946971] ---[ end trace 0000000000000000 ]---
[ 32.093225] Kernel panic - not syncing: Fatal exception in interrupt
[ 32.093526] Kernel relocated by 0x2320000
[ 32.093630] .text @ 0x9000000002520000
[ 32.093725] .data @ 0x9000000003400000
[ 32.093792] .bss @ 0x9000000004413200
[ 34.971998] ---[ end Kernel panic - not syncing: Fatal exception in interrupt ]---
This is because we signed-extend function return values. When subprog
mode is enabled, we have:
cls_redirect()
-> get_global_metrics() returns pcpu ptr 0xfffffefffc00b480
The pointer returned is later signed-extended to 0xfffffffffc00b480 at
`BPF_JMP | BPF_EXIT`. During BPF prog run, this triggers unhandled page
fault and a kernel panic.
Drop the unnecessary signed-extension on return values like other
architectures do.
With this change, we have:
# ./test_progs -t cls_redirect
Can't find bpf_testmod.ko kernel module: -2
WARNING! Selftests relying on bpf_testmod.ko will be skipped.
#51/1 cls_redirect/cls_redirect_inlined:OK
#51/2 cls_redirect/IPv4 TCP accept unknown (no hops, flags: SYN):OK
#51/3 cls_redirect/IPv6 TCP accept unknown (no hops, flags: SYN):OK
#51/4 cls_redirect/IPv4 TCP accept unknown (no hops, flags: ACK):OK
#51/5 cls_redirect/IPv6 TCP accept unknown (no hops, flags: ACK):OK
#51/6 cls_redirect/IPv4 TCP forward unknown (one hop, flags: ACK):OK
#51/7 cls_redirect/IPv6 TCP forward unknown (one hop, flags: ACK):OK
#51/8 cls_redirect/IPv4 TCP accept known (one hop, flags: ACK):OK
#51/9 cls_redirect/IPv6 TCP accept known (one hop, flags: ACK):OK
#51/10 cls_redirect/IPv4 UDP accept unknown (no hops, flags: none):OK
#51/11 cls_redirect/IPv6 UDP accept unknown (no hops, flags: none):OK
#51/12 cls_redirect/IPv4 UDP forward unknown (one hop, flags: none):OK
#51/13 cls_redirect/IPv6 UDP forward unknown (one hop, flags: none):OK
#51/14 cls_redirect/IPv4 UDP accept known (one hop, flags: none):OK
#51/15 cls_redirect/IPv6 UDP accept known (one hop, flags: none):OK
#51/16 cls_redirect/cls_redirect_subprogs:OK
#51/17 cls_redirect/IPv4 TCP accept unknown (no hops, flags: SYN):OK
#51/18 cls_redirect/IPv6 TCP accept unknown (no hops, flags: SYN):OK
#51/19 cls_redirect/IPv4 TCP accept unknown (no hops, flags: ACK):OK
#51/20 cls_redirect/IPv6 TCP accept unknown (no hops, flags: ACK):OK
#51/21 cls_redirect/IPv4 TCP forward unknown (one hop, flags: ACK):OK
#51/22 cls_redirect/IPv6 TCP forward unknown (one hop, flags: ACK):OK
#51/23 cls_redirect/IPv4 TCP accept known (one hop, flags: ACK):OK
#51/24 cls_redirect/IPv6 TCP accept known (one hop, flags: ACK):OK
#51/25 cls_redirect/IPv4 UDP accept unknown (no hops, flags: none):OK
#51/26 cls_redirect/IPv6 UDP accept unknown (no hops, flags: none):OK
#51/27 cls_redirect/IPv4 UDP forward unknown (one hop, flags: none):OK
#51/28 cls_redirect/IPv6 UDP forward unknown (one hop, flags: none):OK
#51/29 cls_redirect/IPv4 UDP accept known (one hop, flags: none):OK
#51/30 cls_redirect/IPv6 UDP accept known (one hop, flags: none):OK
#51/31 cls_redirect/cls_redirect_dynptr:OK
#51/32 cls_redirect/IPv4 TCP accept unknown (no hops, flags: SYN):OK
#51/33 cls_redirect/IPv6 TCP accept unknown (no hops, flags: SYN):OK
#51/34 cls_redirect/IPv4 TCP accept unknown (no hops, flags: ACK):OK
#51/35 cls_redirect/IPv6 TCP accept unknown (no hops, flags: ACK):OK
#51/36 cls_redirect/IPv4 TCP forward unknown (one hop, flags: ACK):OK
#51/37 cls_redirect/IPv6 TCP forward unknown (one hop, flags: ACK):OK
#51/38 cls_redirect/IPv4 TCP accept known (one hop, flags: ACK):OK
#51/39 cls_redirect/IPv6 TCP accept known (one hop, flags: ACK):OK
#51/40 cls_redirect/IPv4 UDP accept unknown (no hops, flags: none):OK
#51/41 cls_redirect/IPv6 UDP accept unknown (no hops, flags: none):OK
#51/42 cls_redirect/IPv4 UDP forward unknown (one hop, flags: none):OK
#51/43 cls_redirect/IPv6 UDP forward unknown (one hop, flags: none):OK
#51/44 cls_redirect/IPv4 UDP accept known (one hop, flags: none):OK
#51/45 cls_redirect/IPv6 UDP accept known (one hop, flags: none):OK
#51 cls_redirect:OK
Summary: 1/45 PASSED, 0 SKIPPED, 0 FAILED
Fixes:
|
||
|
Hengqi Chen
|
fe5757553b |
LoongArch: BPF: Don't sign extend memory load operand
The `cgrp_local_storage` test triggers a kernel panic like:
# ./test_progs -t cgrp_local_storage
Can't find bpf_testmod.ko kernel module: -2
WARNING! Selftests relying on bpf_testmod.ko will be skipped.
[ 550.930632] CPU 1 Unable to handle kernel paging request at virtual address 0000000000000080, era == ffff80000200be34, ra == ffff80000200be00
[ 550.931781] Oops[#1]:
[ 550.931966] CPU: 1 PID: 1303 Comm: test_progs Not tainted 6.7.0-rc2-loong-devel-g2f56bb0d2327 #35 a896aca3f4164f09cc346f89f2e09832e07be5f6
[ 550.932215] Hardware name: QEMU QEMU Virtual Machine, BIOS unknown 2/2/2022
[ 550.932403] pc ffff80000200be34 ra ffff80000200be00 tp 9000000108350000 sp 9000000108353dc0
[ 550.932545] a0 0000000000000000 a1 0000000000000517 a2 0000000000000118 a3 00007ffffbb15558
[ 550.932682] a4 00007ffffbb15620 a5 90000001004e7700 a6 0000000000000021 a7 0000000000000118
[ 550.932824] t0 ffff80000200bdc0 t1 0000000000000517 t2 0000000000000517 t3 00007ffff1c06ee0
[ 550.932961] t4 0000555578ae04d0 t5 fffffffffffffff8 t6 0000000000000004 t7 0000000000000020
[ 550.933097] t8 0000000000000040 u0 00000000000007b8 s9 9000000108353e00 s0 90000001004e7700
[ 550.933241] s1 9000000004005000 s2 0000000000000001 s3 0000000000000000 s4 0000555555eb2ec8
[ 550.933379] s5 00007ffffbb15bb8 s6 00007ffff1dafd60 s7 000055555663f610 s8 00007ffff1db0050
[ 550.933520] ra: ffff80000200be00 bpf_prog_98f1b9e767be2a84_on_enter+0x40/0x200
[ 550.933911] ERA: ffff80000200be34 bpf_prog_98f1b9e767be2a84_on_enter+0x74/0x200
[ 550.934105] CRMD: 000000b0 (PLV0 -IE -DA +PG DACF=CC DACM=CC -WE)
[ 550.934596] PRMD: 00000004 (PPLV0 +PIE -PWE)
[ 550.934712] EUEN: 00000003 (+FPE +SXE -ASXE -BTE)
[ 550.934836] ECFG: 00071c1c (LIE=2-4,10-12 VS=7)
[ 550.934976] ESTAT: 00010000 [PIL] (IS= ECode=1 EsubCode=0)
[ 550.935097] BADV: 0000000000000080
[ 550.935181] PRID: 0014c010 (Loongson-64bit, Loongson-3A5000)
[ 550.935291] Modules linked in:
[ 550.935391] Process test_progs (pid: 1303, threadinfo=000000006c3b1c41, task=0000000061f84a55)
[ 550.935643] Stack : 00007ffffbb15bb8 0000555555eb2ec8 0000000000000000 0000000000000001
[ 550.935844] 9000000004005000 ffff80001b864000 00007ffffbb15450 90000000029aa034
[ 550.935990] 0000000000000000 9000000108353ec0 0000000000000118 d07d9dfb09721a09
[ 550.936175] 0000000000000001 0000000000000000 9000000108353ec0 0000000000000118
[ 550.936314] 9000000101d46ad0 900000000290abf0 000055555663f610 0000000000000000
[ 550.936479] 0000000000000003 9000000108353ec0 00007ffffbb15450 90000000029d7288
[ 550.936635] 00007ffff1dafd60 000055555663f610 0000000000000000 0000000000000003
[ 550.936779] 9000000108353ec0 90000000035dd1f0 00007ffff1dafd58 9000000002841c5c
[ 550.936939] 0000000000000119 0000555555eea5a8 00007ffff1d78780 00007ffffbb153e0
[ 550.937083] ffffffffffffffda 00007ffffbb15518 0000000000000040 00007ffffbb15558
[ 550.937224] ...
[ 550.937299] Call Trace:
[ 550.937521] [<ffff80000200be34>] bpf_prog_98f1b9e767be2a84_on_enter+0x74/0x200
[ 550.937910] [<90000000029aa034>] bpf_trace_run2+0x90/0x154
[ 550.938105] [<900000000290abf0>] syscall_trace_enter.isra.0+0x1cc/0x200
[ 550.938224] [<90000000035dd1f0>] do_syscall+0x48/0x94
[ 550.938319] [<9000000002841c5c>] handle_syscall+0xbc/0x158
[ 550.938477]
[ 550.938607] Code: 580009ae 50016000 262402e4 <28c20085> 14092084 03a00084 16000024 03240084 00150006
[ 550.938851]
[ 550.939021] ---[ end trace 0000000000000000 ]---
Further investigation shows that this panic is triggered by memory
load operations:
ptr = bpf_cgrp_storage_get(&map_a, task->cgroups->dfl_cgrp, 0,
BPF_LOCAL_STORAGE_GET_F_CREATE);
The expression `task->cgroups->dfl_cgrp` involves two memory load.
Since the field offset fits in imm12 or imm14, we use ldd or ldptrd
instructions. But both instructions have the side effect that it will
signed-extended the imm operand. Finally, we got the wrong addresses
and panics is inevitable.
Use a generic ldxd instruction to avoid this kind of issues.
With this change, we have:
# ./test_progs -t cgrp_local_storage
Can't find bpf_testmod.ko kernel module: -2
WARNING! Selftests relying on bpf_testmod.ko will be skipped.
test_cgrp_local_storage:PASS:join_cgroup /cgrp_local_storage 0 nsec
#48/1 cgrp_local_storage/tp_btf:OK
test_attach_cgroup:PASS:skel_open 0 nsec
test_attach_cgroup:PASS:prog_attach 0 nsec
test_attach_cgroup:PASS:prog_attach 0 nsec
libbpf: prog 'update_cookie_tracing': failed to attach: ERROR: strerror_r(-524)=22
test_attach_cgroup:FAIL:prog_attach unexpected error: -524
#48/2 cgrp_local_storage/attach_cgroup:FAIL
test_recursion:PASS:skel_open_and_load 0 nsec
libbpf: prog 'on_lookup': failed to attach: ERROR: strerror_r(-524)=22
libbpf: prog 'on_lookup': failed to auto-attach: -524
test_recursion:FAIL:skel_attach unexpected error: -524 (errno 524)
#48/3 cgrp_local_storage/recursion:FAIL
#48/4 cgrp_local_storage/negative:OK
#48/5 cgrp_local_storage/cgroup_iter_sleepable:OK
test_yes_rcu_lock:PASS:skel_open 0 nsec
test_yes_rcu_lock:PASS:skel_load 0 nsec
libbpf: prog 'yes_rcu_lock': failed to attach: ERROR: strerror_r(-524)=22
libbpf: prog 'yes_rcu_lock': failed to auto-attach: -524
test_yes_rcu_lock:FAIL:skel_attach unexpected error: -524 (errno 524)
#48/6 cgrp_local_storage/yes_rcu_lock:FAIL
#48/7 cgrp_local_storage/no_rcu_lock:OK
#48 cgrp_local_storage:FAIL
All error logs:
test_cgrp_local_storage:PASS:join_cgroup /cgrp_local_storage 0 nsec
test_attach_cgroup:PASS:skel_open 0 nsec
test_attach_cgroup:PASS:prog_attach 0 nsec
test_attach_cgroup:PASS:prog_attach 0 nsec
libbpf: prog 'update_cookie_tracing': failed to attach: ERROR: strerror_r(-524)=22
test_attach_cgroup:FAIL:prog_attach unexpected error: -524
#48/2 cgrp_local_storage/attach_cgroup:FAIL
test_recursion:PASS:skel_open_and_load 0 nsec
libbpf: prog 'on_lookup': failed to attach: ERROR: strerror_r(-524)=22
libbpf: prog 'on_lookup': failed to auto-attach: -524
test_recursion:FAIL:skel_attach unexpected error: -524 (errno 524)
#48/3 cgrp_local_storage/recursion:FAIL
test_yes_rcu_lock:PASS:skel_open 0 nsec
test_yes_rcu_lock:PASS:skel_load 0 nsec
libbpf: prog 'yes_rcu_lock': failed to attach: ERROR: strerror_r(-524)=22
libbpf: prog 'yes_rcu_lock': failed to auto-attach: -524
test_yes_rcu_lock:FAIL:skel_attach unexpected error: -524 (errno 524)
#48/6 cgrp_local_storage/yes_rcu_lock:FAIL
#48 cgrp_local_storage:FAIL
Summary: 0/4 PASSED, 0 SKIPPED, 1 FAILED
No panics any more (The test still failed because lack of BPF trampoline
which I am actively working on).
Fixes:
|
||
|
Hengqi Chen
|
d6c5f06e46 |
LoongArch: Preserve syscall nr across execve()
Currently, we store syscall nr in pt_regs::regs[11] and syscall execve()
accidentally overrides it during its execution:
sys_execve()
-> do_execve()
-> do_execveat_common()
-> bprm_execve()
-> exec_binprm()
-> search_binary_handler()
-> load_elf_binary()
-> ELF_PLAT_INIT()
ELF_PLAT_INIT() reset regs[11] to 0, so in syscall_exit_to_user_mode()
we later get a wrong syscall nr. This breaks tools like execsnoop since
it relies on execve() tracepoints.
Skip pt_regs::regs[11] reset in ELF_PLAT_INIT() to fix the issue.
Signed-off-by: Hengqi Chen <hengqi.chen@gmail.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
|
||
|
Jinyang He
|
97ceddbc94 |
LoongArch: Set unwind stack type to unknown rather than set error flag
During unwinding, unwind_done() is used as an end condition. Normally it unwind to the user stack and then set the stack type to unknown, which is a normal exit. When something unexpected happens in unwind process and we cannot unwind anymore, we should set the error flag, and also set the stack type to unknown to indicate that the unwind process can not continue. The error flag emphasizes that the unwind process produce an unexpected error. There is no unexpected things when we unwind the PT_REGS in the top of IRQ stack and find out that is an user mode PT_REGS. Thus, we should not set error flag and just set stack type to unknown. Reported-by: Hengqi Chen <hengqi.chen@gmail.com> Acked-by: Hengqi Chen <hengqi.chen@gmail.com> Signed-off-by: Jinyang He <hejinyang@loongson.cn> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> |
||
|
Xi Ruoyao
|
8146c5b349 |
LoongArch: Slightly clean up drdtime()
As we are just discarding the stable clock ID, simply write it into $zero instead of allocating a temporary register. Signed-off-by: Xi Ruoyao <xry111@xry111.site> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> |
||
|
WANG Rui
|
eea673e9d5 |
LoongArch: Apply dynamic relocations for LLD
For the following assembly code:
.text
.global func
func:
nop
.data
var:
.dword func
When linked with `-pie`, GNU LD populates the `var` variable with the
pre-relocated value of `func`. However, LLVM LLD does not exhibit the
same behavior. This issue also arises with the `kernel_entry` in arch/
loongarch/kernel/head.S:
_head:
.word MZ_MAGIC /* "MZ", MS-DOS header */
.org 0x8
.dword kernel_entry /* Kernel entry point */
The correct kernel entry from the MS-DOS header is crucial for jumping
to vmlinux from zboot. This necessity is why the compressed relocatable
kernel compiled by Clang encounters difficulties in booting.
To address this problem, it is proposed to apply dynamic relocations to
place with `--apply-dynamic-relocs`.
Link: https://github.com/ClangBuiltLinux/linux/issues/1962
Signed-off-by: WANG Rui <wangrui@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
|
||
|
Linus Torvalds
|
f2e8a57ee9 |
SCSI fixes on 20231208
One tiny fix to the be2iscsi driver fixing a memory leak in an error leg. Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com> -----BEGIN PGP SIGNATURE----- iJwEABMIAEQWIQTnYEDbdso9F2cI+arnQslM7pishQUCZXNjACYcamFtZXMuYm90 dG9tbGV5QGhhbnNlbnBhcnRuZXJzaGlwLmNvbQAKCRDnQslM7pishYz4AQC/yT6c gWAr2e6NMUXs0Wx3C25ZFA3MS5OOhnkmIt8e2gEApSuCvlRZmHmR/YCphQD4e1ij k0M7kd9jM7v356QTFBE= =q8tg -----END PGP SIGNATURE----- Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI fix from James Bottomley: "One tiny fix to the be2iscsi driver fixing a memory leak in an error leg" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: be2iscsi: Fix a memleak in beiscsi_init_wrb_handle() |
||
|
Linus Torvalds
|
d71369dbe0 |
block-6.7-2023-12-08
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QlouVtrdkGA+u2xj0NJ24rtlyVvSg/150UWdtxgkq9zLQudFD9HoIDySjdnwHgIE
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a6vKAkWF7Q==
=Ds8S
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Merge tag 'block-6.7-2023-12-08' of git://git.kernel.dk/linux
Pull block fixes from Jens Axboe:
"Nothing major in here, just miscellanous fixes for MD and NVMe:
- NVMe pull request via Keith:
- Proper nvme ctrl state setting (Keith)
- Passthrough command optimization (Keith)
- Spectre fix (Nitesh)
- Kconfig clarifications (Shin'ichiro)
- Frozen state deadlock fix (Bitao)
- Power setting quirk (Georg)
- MD pull requests via Song:
- 6.7 regresisons with recovery/sync (Yu)
- Reshape fix (David)"
* tag 'block-6.7-2023-12-08' of git://git.kernel.dk/linux:
md: split MD_RECOVERY_NEEDED out of mddev_resume
nvme-pci: Add sleep quirk for Kingston drives
md: fix stopping sync thread
md: don't leave 'MD_RECOVERY_FROZEN' in error path of md_set_readonly()
md: fix missing flush of sync_work
nvme: fix deadlock between reset and scan
nvme: prevent potential spectre v1 gadget
nvme: improve NVME_HOST_AUTH and NVME_TARGET_AUTH config descriptions
nvme-ioctl: move capable() admin check to the end
nvme: ensure reset state check ordering
nvme: introduce helper function to get ctrl state
md/raid6: use valid sector values to determine if an I/O should wait on the reshape
|
||
|
Linus Torvalds
|
689659c988 |
io_uring-6.7-2023-12-08
-----BEGIN PGP SIGNATURE----- iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAmVzOJkQHGF4Ym9lQGtl cm5lbC5kawAKCRD301j7KXHgpmYVD/0cx0TTIrip959DLqF/V8sl2BIrt/mjAvS4 oeVUe5OmqyR2gjjEYewf21MUyzE4tSMO/LFTEr0744zENKNTL84YhIIq30ga+Gue n61c4WfPnhpvj8NQHuEf65cPosPSvKi6NSMLRJZCLqHtn8SrTQyCg8zk8GwjN/nl fJScbrj4XKfZNlizKfbHQexfi78DZ2braTds0pPZ+uFXDTIrOKAfixfV39qwTFYZ zI4FYKH8KzZzuMyyu2B+F3xCMdelUg26i2KMImKBaOsamnucIlyNvr/uWGs2G8tu Z7sWGXdY9bFlWfAFxGZeFRWbmqpFz15Mmi2Uqx8wiiYxBAaJKL+Qaq358KbTD0hB ZBKdy3AUw5J/445pwIepGp5XVxqn/qJFxGXzLAlncdhf9mXrjmFwNC/Yp5lnyDYy S3YhUsjpGX3Mymjd/gWkn1BTZh7zzpKI6LmWJjn89jmTpOzlWmfPu/uM/c/vKvE8 KajCkZ3nUCmr56GUxvSZcon7vwc8pLUyrF8Vo1vwEEVgiN+IjJVk3dMAz0hyGhtO 2HxSwOAHllAIyqjmazqESQnWEf1p8idnoR9qZXAiLzbwUFbUY/a/YrCul6vHM4yE czat+EGWdfJi0EX0z/bMUVRz05UbNt0JtKf3BnqxWtQlT8yKwCvMgHXuPJbY4y5g yXi7ep37JQ== =Xta7 -----END PGP SIGNATURE----- Merge tag 'io_uring-6.7-2023-12-08' of git://git.kernel.dk/linux Pull io_uring fixes from Jens Axboe: "Two minor fixes for issues introduced in this release cycle, and two fixes for issues or potential issues that are heading to stable. One of these ends up disabling passing io_uring file descriptors via SCM_RIGHTS. There really shouldn't be an overlap between that kind of historic use case and modern usage of io_uring, which is why this was deemed appropriate" * tag 'io_uring-6.7-2023-12-08' of git://git.kernel.dk/linux: io_uring/af_unix: disable sending io_uring over sockets io_uring/kbuf: check for buffer list readiness after NULL check io_uring/kbuf: Fix an NULL vs IS_ERR() bug in io_alloc_pbuf_ring() io_uring: fix mutex_unlock with unreferenced ctx |
||
|
Linus Torvalds
|
8aa74869d2 |
RDMA first rc pull for v6.7
Primarily rtrs and irdma fixes:
- Fix uninitialized value in ib_get_eth_speed()
- Fix hns refusing to work if userspace doesn't select the correct
congestion control algorithm
- Several irdma fixes - unreliable Send Queue Drain, use after free, 64k
page size bugs, device removal races
- Several rtrs bug fixes - crashes, memory leaks, use after free, bad
credit accounting, bogus WARN_ON
- Typos and a MAINTAINER update
-----BEGIN PGP SIGNATURE-----
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma fixes from Jason Gunthorpe:
"Primarily rtrs and irdma fixes:
- Fix uninitialized value in ib_get_eth_speed()
- Fix hns refusing to work if userspace doesn't select the correct
congestion control algorithm
- Several irdma fixes - unreliable Send Queue Drain, use after free,
64k page size bugs, device removal races
- Several rtrs bug fixes - crashes, memory leaks, use after free, bad
credit accounting, bogus WARN_ON
- Typos and a MAINTAINER update"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
RDMA/irdma: Avoid free the non-cqp_request scratch
RDMA/irdma: Fix support for 64k pages
RDMA/irdma: Ensure iWarp QP queue memory is OS paged aligned
RDMA/core: Fix umem iterator when PAGE_SIZE is greater then HCA pgsz
RDMA/irdma: Fix UAF in irdma_sc_ccq_get_cqe_info()
RDMA/bnxt_re: Correct module description string
RDMA/rtrs-clt: Remove the warnings for req in_use check
RDMA/rtrs-clt: Fix the max_send_wr setting
RDMA/rtrs-srv: Destroy path files after making sure no IOs in-flight
RDMA/rtrs-srv: Free srv_mr iu only when always_invalidate is true
RDMA/rtrs-srv: Check return values while processing info request
RDMA/rtrs-clt: Start hb after path_up
RDMA/rtrs-srv: Do not unconditionally enable irq
MAINTAINERS: Add Chengchang Tang as Hisilicon RoCE maintainer
RDMA/irdma: Add wait for suspend on SQD
RDMA/irdma: Do not modify to SQD on error
RDMA/hns: Fix unnecessary err return when using invalid congest control algorithm
RDMA/core: Fix uninit-value access in ib_get_eth_speed()
|
||
|
Linus Torvalds
|
081ed90a8c |
Power management fix for 6.7-rc5
Fix cpufreq reference counting in the DTPM (dynamic thermal and power management) power capping framework (Lukasz Luba). -----BEGIN PGP SIGNATURE----- iQJGBAABCAAwFiEE4fcc61cGeeHD/fCwgsRv/nhiVHEFAmVzVpgSHHJqd0Byand5 c29ja2kubmV0AAoJEILEb/54YlRxVr4P/j2SMo9M5tA39cHJ3nUWXBV23pWXQW/N 2Gl1oFr6UAHM3sbIAN6MGGGFAPjIxdLisUMDmPsIc1HkLHBV6aG5vOoxvUP9XCAK je+kWIAKsIMaf/l3kfD3OdDda3RQlbcTbVyP8vKxcYWyLe1lAO7ddYuvsXuN9gCb t+KoWjN5DSYbS+0reIsBGjYQRA6Asf6mciAdvbFkZwQkot/E9jxxH927IN69X2JJ dRG6NsfFbX25Xb1i3a+uNCPrc7NeNYn1NHw2QfDEgGxM0sxBhamTJNNOePZwEx50 4mM8wvtshV9/rSGlXZBpKm0WaDB1exoE9ot9ZOjpeRiBnoNf1adTtsb0EHOA7V8Y nRfB5hS4VfuOVuED9ytwAPcxb3s3VKJmmMb2xquODXRZVELIvtYvRia9Fnp3HP98 J/lUBmzVe3/ieBoUHPznNIinGqHuXMIRyNejybnwVXGf8wD2Te4tRU9DNeUgHkPJ yQFQAURNwZxsCAYOv3DnA8eUjDbPXYrBlHSMP05BNUXBe6qmhf1kMJAEW/zz7x1h lJ4mNBGVzfSBlUoD3uuf4+qb1VgseqN1VqgimbWahZqErAhToh0aRsfe8cs/7cFq 86qifoXfFYPUt2pJVF3P2DWPLZKU3HjpqQUrICQx5zc+EkDP9p9sdOvcnidC/UdV b/C3KOe1EvfZ =slx+ -----END PGP SIGNATURE----- Merge tag 'pm-6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management fix from Rafael Wysocki: "Fix cpufreq reference counting in the DTPM (dynamic thermal and power management) power capping framework (Lukasz Luba)" * tag 'pm-6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: powercap: DTPM: Fix missing cpufreq_cpu_put() calls |
||
|
Linus Torvalds
|
c3e2f9bda2 |
ACPI fix for 6.7-rc5
Fix a possible crash on an attempt to free unallocated memory in the error path of acpi_evaluate_reference() that has been introduced by one of the recent changes (Rafael Wysocki). -----BEGIN PGP SIGNATURE----- iQJGBAABCAAwFiEE4fcc61cGeeHD/fCwgsRv/nhiVHEFAmVzVyQSHHJqd0Byand5 c29ja2kubmV0AAoJEILEb/54YlRxh38P/AyhME1sSfnVBFGBs6hbkiqbXkiv53ty VSk08bp4r2Be+CruttN7D1lb9Y6RnIcQ0961dSEIwAEzuWy4lGUIAw02ljvZIr2z XFbAtusRTAqJBkCuwvs3vFsUIC3AAH//m9wfVo75iTQSKCgbn0C8t92ttOrx9/Ys XCPqEb06KeOU5C/twr5EbIUUpP+TARTAjP8CXeAaiYzjeSpNz/wQbkd5sHLJNBBO O5hwhey944BIqvY3PXDl6hDiWVKqBs9w7qQmDVMc1dck2WhQ9L2wBsIgf4MICoAh 8IORi0PbEhsH9yxY8GIuLkYKIeMKx2bd04kDi8GuskP/GJxuZfehs7MH1Et0+glH itN6EM7EanznBrKH55ilHi8A25aKI6vW8parMJjyZm66MlGha0FuY5d493PdA8hL Zsoo130xVPhzEOXATUhNDRZhEW/vfow++MgFTGXZAj+aizVN6Cj8WNNqAaGjYAyZ nvPIY48NVYb1GB0lDfoMiB/PKfMAAEHf9909AYSJnjbH+hc5Rw24+plBlOD9J8e+ 6XfjgHpA9dn43e3HwnkgQb7wqGviCkdwfxkqw3RNpOAYcw2Orp82vs6BTaHcNMC+ ZxnftjuBoBm4L5hXj1+YbzSCUL+ILsUTvuGQDStgjTzz1mdhGUVIicoNhLL9UqFf b/doQTA75g7F =1Xw0 -----END PGP SIGNATURE----- Merge tag 'acpi-6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPI fix from Rafael Wysocki: "Fix a possible crash on an attempt to free unallocated memory in the error path of acpi_evaluate_reference() that has been introduced by one of the recent changes (Rafael Wysocki)" * tag 'acpi-6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI: utils: Fix error path in acpi_evaluate_reference() |
||
|
Linus Torvalds
|
0dfe14fca9 |
hwmon fixes for v6.7-rc5
- acpi_power_meter: Fix 4.29 MW output sen if acpi reports bad data - corsair-psu: Fix ability to probe if the driver is built into the kernel - ltc2991: Fix spelling mistake "contiuous" -> "continuous" - max31827: Add missing regulator header file include - nzxt-kraken2: Fix error handling path in probe function -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEiHPvMQj9QTOCiqgVyx8mb86fmYEFAmVzZNcACgkQyx8mb86f mYFCgg/+KwO3QvSY7Mfwl93Xhijix7VC1XjJL4eHZfODiUQWnCgsjFLcA9SzbUsu mN2kKVrDWtN+Gp5rPOmCN8JFLxe4uifdg1ThfZ1rVv0xrowiffLgibFM5OVo4ynO 1RJ8mg8y6JYb/Dy67kYwq2Z2NQPSB+6JourOJ+egXgZutZ7qmEcz81JjN+Dy1FAg Wa7bEuIlPChPmWwZRHBSilkoyb9tvMpU/5jG06UWrQOjMNYE2Incw9HRmg5tKVlD UVh4QrtP2kuk+M6ChwS4ffjD0Me3KIqQ9aAXb+QqNE0QziLkrLbRwHk1bHxrfjse EdKs+X7Ic40U6N7BFbEEiq+MeG3Q+47S8IVDlWIvIR3om13Jswn6wGkHB2WnVGBk zGXJ8iXLmxKuNiWvoeGUBvuSr/iaFY1jb8xFf+T92pso52GPVIgIDtS2H6qjSUE9 iE9hwxLGE5GHNQJNN3dmCvUV22RUOTQVVMqmMOGerufusyb55Am6KHar9HtxAmpe SI0KB7i6zaPe0o8pXVMuWmonAsR0YXs57jyKB0lENJSCtjl3XiHEw7KkPZTYyKEo 3m3xpOGvSnmAK7DHlm2CAP6UvBpikG/JXJnLyT+0LcsC6ifhcAjdossoi4Jyk0fv +v0tdhtd0DJTAO2DmVGtfc1WLIFEUq5xBEUhpLKMR2JpyVUTWAY= =Bj8e -----END PGP SIGNATURE----- Merge tag 'hwmon-for-v6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging Pull hwmon fixes from Guenter Roeck: - acpi_power_meter: Fix 4.29 MW output seen if acpi reports bad data - corsair-psu: Fix ability to probe if the driver is built into the kernel - ltc2991: Fix spelling mistake "contiuous" -> "continuous" - max31827: Add missing regulator header file include - nzxt-kraken2: Fix error handling path in probe function * tag 'hwmon-for-v6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: hwmon: (corsair-psu) Fix probe when built-in hwmon: (nzxt-kraken2) Fix error handling path in kraken2_probe() hwmon: (acpi_power_meter) Fix 4.29 MW bug hwmon: max31827: include regulator header hwmon: ltc2991: Fix spelling mistake "contiuous" -> "continuous" |
||
|
Linus Torvalds
|
d650b3beff |
pwm fixes for v6.7-rc5
This fixes a null pointer exception in the bcm2835 pwm driver. The problem was introduced by a combination of two commits merged for v6.7-rc1 where each change alone would have been fine. Thanks to Florian Fainelli for noticing and fixing the issue. -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEP4GsaTp6HlmJrf7Tj4D7WH0S/k4FAmVzH2kACgkQj4D7WH0S /k7dLgf+IJh7lsXEdZCLhtXuopc+cT84AuM1tgtSE1dcO//QVXDMApCjuPcW8u6v V6/ASBFjWuBJZJjW3qJ73XNMkNefYkVN4x0nDw1+u7zmjT2yCfyf2WYO3PzGqXmK GTN/enXZuWTJAQhuKAqGbdMOCPyESwIcwZ7NtnOUoJ44tfzD+5bbgmq6UeftyM9R bY+GY4TMKlZxJJiVEWaTdUejZViKTwY7GBi+0TCM8v6IVqH8Xqbyo1zt07UoU3R3 qD0+JnirLAZqweaEkKGLC7ch37qiEZ87traWP5J0OuoK9UoMj2NH056Y2gfOFlAD ec9ew8S4Qd+tupMWZYIe2zEPiWPbgw== =6v3w -----END PGP SIGNATURE----- Merge tag 'pwm/for-6.7-rc5-fixes' of https://git.pengutronix.de/git/ukl/linux Pull pwm fix from Uwe Kleine-König: "This fixes a null pointer exception in the bcm2835 pwm driver. The problem was introduced by a combination of two commits merged for v6.7-rc1 where each change alone would have been fine. Thanks to Florian Fainelli for noticing and fixing the issue" * tag 'pwm/for-6.7-rc5-fixes' of https://git.pengutronix.de/git/ukl/linux: pwm: bcm2835: Fix NPD in suspend/resume |
||
|
Linus Torvalds
|
b8b68d2fd4 |
sound fixes for 6.7-rc5
This is a typical bump in the middle of its way; we've gathered lots of fixes (mostly for ASoC) at this time. - PCM array out-of-bound access fix - Correction of SOC PCM merge error - Lots of ASoC SOF Intel updates - A few ASoC AMD quirks - More proper timer handling in PCM test module - HD-audio and USB-audio quirks as usual - Other device-specific fixes for various ASoC codecs -----BEGIN PGP SIGNATURE----- iQJCBAABCAAsFiEEIXTw5fNLNI7mMiVaLtJE4w1nLE8FAmVy8MkOHHRpd2FpQHN1 c2UuZGUACgkQLtJE4w1nLE+k9A/9HezmtiuQhxZ4l8AnbkSH1XBvFJjTIflpvuWh b2qW3qAoAudoznDpVL4Ad1usK/pJpAQ2KoImR7wkGs22HyryaZ0rjok0Yh2J+emP Z6Y4jnXOlgKugmVVzBBnrY6F+rESqm2JnZIfKQ2m8eD28s6WCl9r6uueSlCYnIMV bpX7T01BSOmUCSgzG6DMK33aAB+hxZvhT5Dd/F6XIrpHFaqmFPX01r/YAppPq+Az c8f4sqClndsEwPGBznUeHEDhwq7I1meeJzaIp+T9L5S/qDVUSueupqVBs8Aso6Cm e59al1w/PfFUllWx3n87Q7+ZAW5Lv5IimxhmrKptrCQISYbjNCOW/05sOAJB3tNY 72acKUj0xFEq8kHr/KfTyOIDG6sYdUXgqCsmEPkMuV1z6R3jyfQuUs3MNBsjDEEx z5bbd2OykCYMc3kyNSuaU23UzDOguOoaeNyW+9tV075joDEy9qlskArD+CCA7LMk W7EdV5HxBXKMoxRMKuW+zg+dB7w5pkYoAXLdh/l9M6acfvYw69C4EeAa2ELQCJY6 Pkw0+EMdfRSOqudjbeyDJyOheYuqliiI/rfT8TEIf/CWiPDW0jtL1Nz1hW4a/Qyp y+veNAEj6+e7Lww5K2dckp1k+fPqEsSKot7qlQC9ozu3gAPVjgvJJMuOdLAnv1Ym nNAhPu0= =m2Ci -----END PGP SIGNATURE----- Merge tag 'sound-6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixes from Takashi Iwai: "This is a typical bump in the middle of its way; we've gathered lots of fixes (mostly for ASoC) at this time: - PCM array out-of-bound access fix - Correction of SOC PCM merge error - Lots of ASoC SOF Intel updates - A few ASoC AMD quirks - More proper timer handling in PCM test module - HD-audio and USB-audio quirks as usual - Other device-specific fixes for various ASoC codecs" * tag 'sound-6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (39 commits) ALSA: hda/realtek: Add quirk for Lenovo Yoga Pro 7 ALSA: pcmtest: stop timer before buffer is released ALSA: hda/realtek: Add Framework laptop 16 to quirks ALSA: hda/realtek: add new Framework laptop to quirks ALSA: pcm: fix out-of-bounds in snd_pcm_state_names ASoC: qcom: sc8280xp: Limit speaker digital volumes ASoC: ops: add correct range check for limiting volume ALSA: hda/realtek: Enable headset on Lenovo M90 Gen5 ALSA: hda/realtek: fix speakers on XPS 9530 (2023) ALSA: usb-audio: Add Pioneer DJM-450 mixer controls ASoC: wm_adsp: fix memleak in wm_adsp_buffer_populate ASoC: da7219: Support low DC impedance headset ASoC: amd: acp: Add support for a new Huawei Matebook laptop ALSA: hda/realtek: Apply quirk for ASUS UM3504DA ASoC: SOF: ipc4-topology: Correct data structures for the GAIN module ASoC: SOF: ipc4-topology: Correct data structures for the SRC module ASoC: hdac_hda: Conditionally register dais for HDMI and Analog ASoC: codecs: lpass-tx-macro: set active_decimator correct default value ASoC: amd: yc: Fix non-functional mic on ASUS E1504FA ASoC: amd: yc: Add DMI entry to support System76 Pangolin 13 ... |
||
|
Linus Torvalds
|
38bafa65b1 |
drm fixes for v6.7-rc5
atomic-helpers:
- invoke end_fb_access while owning plane state
i915:
- fix a missing dep for a previous fix
- Relax BXT/GLK DSI transcoder hblank limits
- Fix DP MST .mode_valid_ctx() return values
- Reject DP MST modes that require bigjoiner (as it's not yet supported on DP MST)
- Fix _intel_dsb_commit() variable type to allow negative values
nouveau:
- document some bits of gsp rm
- flush vmm more on tu102 to avoid hangs
panfrost:
- fix imported dma-buf objects residency
- fix device freq update
bridge:
- tc358768 - fix Kconfig
amdgpu:
- Disable MCBP on gfx9
- DC vbios fix
- eDP fix
- dml2 UBSAN fix
- SMU 14 fix
- RAS fixes
- dml KASAN/KCSAN fix
- PSP 13 fix
- Clockgating fixes
- Suspend fix
exynos:
- fix pointer dereference
- fix wrong error check
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Merge tag 'drm-fixes-2023-12-08' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Regular weekly fixes, mostly amdgpu and i915 as usual. A couple of
nouveau, panfrost, one core and one bridge Kconfig.
Seems about normal for rc5.
atomic-helpers:
- invoke end_fb_access while owning plane state
i915:
- fix a missing dep for a previous fix
- Relax BXT/GLK DSI transcoder hblank limits
- Fix DP MST .mode_valid_ctx() return values
- Reject DP MST modes that require bigjoiner (as it's not yet
supported on DP MST)
- Fix _intel_dsb_commit() variable type to allow negative values
nouveau:
- document some bits of gsp rm
- flush vmm more on tu102 to avoid hangs
panfrost:
- fix imported dma-buf objects residency
- fix device freq update
bridge:
- tc358768 - fix Kconfig
amdgpu:
- Disable MCBP on gfx9
- DC vbios fix
- eDP fix
- dml2 UBSAN fix
- SMU 14 fix
- RAS fixes
- dml KASAN/KCSAN fix
- PSP 13 fix
- Clockgating fixes
- Suspend fix
exynos:
- fix pointer dereference
- fix wrong error check"
* tag 'drm-fixes-2023-12-08' of git://anongit.freedesktop.org/drm/drm: (27 commits)
drm/exynos: fix a wrong error checking
drm/exynos: fix a potential error pointer dereference
drm/amdgpu: fix buffer funcs setting order on suspend
drm/amdgpu: Avoid querying DRM MGCG status
drm/amdgpu: Update HDP 4.4.2 clock gating flags
drm/amdgpu: Add NULL checks for function pointers
drm/amdgpu: Restrict extended wait to PSP v13.0.6
drm/amd/display: Increase frame warning limit with KASAN or KCSAN in dml
drm/amdgpu: optimize the printing order of error data
drm/amdgpu: Update fw version for boot time error query
drm/amd/pm: support new mca smu error code decoding
drm/amd/swsmu: update smu v14_0_0 driver if version and metrics table
drm/amd/display: Fix array-index-out-of-bounds in dml2
drm/amd/display: Add monitor patch for specific eDP
drm/amd/display: Use channel_width = 2 for vram table 3.0
drm/amdgpu: disable MCBP by default
drm/atomic-helpers: Invoke end_fb_access while owning plane state
drm/i915: correct the input parameter on _intel_dsb_commit()
drm/i915/mst: Reject modes that require the bigjoiner
drm/i915/mst: Fix .mode_valid_ctx() return values
...
|
||
|
Sean Christopherson
|
4cdf351d36 |
KVM: SVM: Update EFER software model on CR0 trap for SEV-ES
In general, activating long mode involves setting the EFER_LME bit in the EFER register and then enabling the X86_CR0_PG bit in the CR0 register. At this point, the EFER_LMA bit will be set automatically by hardware. In the case of SVM/SEV guests where writes to CR0 are intercepted, it's necessary for the host to set EFER_LMA on behalf of the guest since hardware does not see the actual CR0 write. In the case of SEV-ES guests where writes to CR0 are trapped instead of intercepted, the hardware *does* see/record the write to CR0 before exiting and passing the value on to the host, so as part of enabling SEV-ES support commit |
||
|
Armin Wolf
|
307004e8b2 |
hwmon: (corsair-psu) Fix probe when built-in
It seems that when the driver is built-in, the HID bus is initialized after the driver is loaded, which whould cause module_hid_driver() to fail. Fix this by registering the driver after the HID bus using late_initcall() in accordance with other hwmon HID drivers. Signed-off-by: Armin Wolf <W_Armin@gmx.de> Link: https://lore.kernel.org/r/20231207210723.222552-1-W_Armin@gmx.de [groeck: Dropped "compile tested" comment; the patch has been tested but the tester did not provide a Tested-by: tag] Signed-off-by: Guenter Roeck <linux@roeck-us.net> |
||
|
David Woodhouse
|
96f124015f |
KVM: selftests: add -MP to CFLAGS
Using -MD without -MP causes build failures when a header file is deleted or moved. With -MP, the compiler will emit phony targets for the header files it lists as dependencies, and the Makefiles won't refuse to attempt to rebuild a C unit which no longer includes the deleted header. Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Link: https://lore.kernel.org/r/9fc8b5395321abbfcaf5d78477a9a7cd350b08e4.camel@infradead.org Signed-off-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
||
|
angquan yu
|
4a073e8134 |
KVM: selftests: Actually print out magic token in NX hugepages skip message
Pass MAGIC_TOKEN to __TEST_REQUIRE() when printing the help message about
needing to pass a magic value to manually run the NX hugepages test,
otherwise the help message will contain garbage.
In file included from x86_64/nx_huge_pages_test.c:15:
x86_64/nx_huge_pages_test.c: In function ‘main’:
include/test_util.h:40:32: error: format ‘%d’ expects a matching ‘int’ argument [-Werror=format=]
40 | ksft_exit_skip("- " fmt "\n", ##__VA_ARGS__); \
| ^~~~
x86_64/nx_huge_pages_test.c:259:9: note: in expansion of macro ‘__TEST_REQUIRE’
259 | __TEST_REQUIRE(token == MAGIC_TOKEN,
| ^~~~~~~~~~~~~~
Signed-off-by: angquan yu <angquan21@gmail.com>
Link: https://lore.kernel.org/r/20231128221105.63093-1-angquan21@gmail.com
[sean: rewrite shortlog+changelog]
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
|
||
|
Paolo Bonzini
|
6254eebad4 |
KVM fixes for 6.7-rcN:
- When checking if a _running_ vCPU is "in-kernel", i.e. running at CPL0,
get the CPL directly instead of relying on preempted_in_kernel, which
is valid if and only if the vCPU was preempted, i.e. NOT running.
- Set .owner for various KVM file_operations so that files refcount the
KVM module until KVM is done executing _all_ code, including the last
few instructions of kvm_put_kvm(). And then revert the misguided
attempt to rely on "struct kvm" refcounts to pin KVM-the-module.
- Fix a benign "return void" that was recently introduced.
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Merge tag 'kvm-x86-fixes-6.7-rcN' of https://github.com/kvm-x86/linux into kvm-master
KVM fixes for 6.7-rcN:
- When checking if a _running_ vCPU is "in-kernel", i.e. running at CPL0,
get the CPL directly instead of relying on preempted_in_kernel, which
is valid if and only if the vCPU was preempted, i.e. NOT running.
- Set .owner for various KVM file_operations so that files refcount the
KVM module until KVM is done executing _all_ code, including the last
few instructions of kvm_put_kvm(). And then revert the misguided
attempt to rely on "struct kvm" refcounts to pin KVM-the-module.
- Fix a benign "return void" that was recently introduced.
|
||
|
Paolo Bonzini
|
aa0ae3df80 |
Two small but important bugfixes.
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||
|
Paolo Bonzini
|
c8a11a938c |
KVM/arm64 fixes for 6.7, take #1
- Avoid mapping vLPIs that have already been mapped -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQSNXHjWXuzMZutrKNKivnWIJHzdFgUCZWub4QAKCRCivnWIJHzd FnZPAP9KlyKZTy3RvczIy4imn+DebrASAApmREkAIvfmz9wFzQD+Lg8AfxPAMz8E e9eNpTZ48Zqzmas93/eu1t6ZpcJOZQA= =fyc9 -----END PGP SIGNATURE----- Merge tag 'kvmarm-fixes-6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into kvm-master KVM/arm64 fixes for 6.7, take #1 - Avoid mapping vLPIs that have already been mapped |
||
|
Linus Torvalds
|
4df7c5fde3 |
RISC-V Fixes for 6.7-rc5
* A pair of fixes to the new module load-time relocation code. * A fix for hwprobe overflowing on rv32. * A fix for to correctly decode C.SWSP and C.SDSP, which manifests in misaligned access handling. * A fix for a boot-time shadow call stack initialization ordering issue. * A fix for Andes' errata probing, which was calling riscv_noncoherent_supported() too late in the boot process and triggering an oops. -----BEGIN PGP SIGNATURE----- iQJHBAABCAAxFiEEKzw3R0RoQ7JKlDp6LhMZ81+7GIkFAmVzPZ8THHBhbG1lckBk YWJiZWx0LmNvbQAKCRAuExnzX7sYiV0LD/0S5ehBNExoF5B/uByAV+5Bgjvee2gc UyYcPoFqhHrd3EUBRNO8bCWXphMpFe19HvR4DDjQwOxmSWKFN58TEjkLZQTmfNGX z/iRdwkwCKWjnjnGdRupJT7nlPWnXDVbwosxcnRhkxBBZRPA29kjf+Hqg+vF0pIQ JMXhUwcV6FrZrKszV/erjNp4L/B1N9uHb5CBMGaYBTaQzMzmcNsCGDZpJrZxlEV/ MESSwgZRc5fUEhCVyafXoq1VVnjC2yM1fgrigpNmilDDLXYZ6iHk8h19cX2Wk2Ns AJ7PX9PR/xuDyaxPD8ANCj/isxqf06T8r3rdSn6aNjP+nzrAoSUAgKQDZNyZclFj nymGD/ZvE3gCqoZ6eYJmA0a3qqxQYpL154F1jJiyB+lIUPiqKIQgc5ksLRNCdvF4 60wc4qKkBKc2PpxU+tD2rn9nl9pAOXiuDGyoT452I3W5SlXb1qDdd5g4hrOlYg4y tSmnzyoI2L6qQ+Gux7TCAzTMTrBsSpMkH8uuPRFvk9DmV6bLsUHIlh/hGmqTQBdr eZM4vO9Xi1haF8THeiuf4T1PgTfG7qFGpzs3nZwz16WQKd4tm5Qe6Ms3oDa1RM9D ZX7feTdw859Pz6ULsm8QMTYn3mBKraUz1EdiNClsKFVBTw722pCk8VJhJbjWFQpZ h9IAyKdQjNeTEA== =Hb40 -----END PGP SIGNATURE----- Merge tag 'riscv-for-linus-6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V fixes from Palmer Dabbelt: - A pair of fixes to the new module load-time relocation code - A fix for hwprobe overflowing on rv32 - A fix for to correctly decode C.SWSP and C.SDSP, which manifests in misaligned access handling - A fix for a boot-time shadow call stack initialization ordering issue - A fix for Andes' errata probing, which was calling riscv_noncoherent_supported() too late in the boot process and triggering an oops * tag 'riscv-for-linus-6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: riscv: errata: andes: Probe for IOCP only once in boot stage riscv: Fix SMP when shadow call stacks are enabled dt-bindings: perf: riscv,pmu: drop unneeded quotes riscv: fix misaligned access handling of C.SWSP and C.SDSP RISC-V: hwprobe: Always use u64 for extension bits Support rv32 ULEB128 test riscv: Correct type casting in module loading riscv: Safely remove entries from relocation list |
||
|
Linus Torvalds
|
a6adef8987 |
ARM: SoC fixes for v6.7
Most of the changes are devicetree fixes for NXP, Mediatek, Rockchips
Arm machines as well as Microchip RISC-V, and most of these address
build-time warnings for spec violations and other minor issues. One of
the Mediatek warnings was enabled by default and prevented a clean build.
The ones that address serious runtime issues are all on the i.MX platform:
- a boot time panic on imx8qm
- USB hanging under load on imx8
- regressions on the imx93 ethernet phy
Code fixes include a minor error handling for the i.MX PMU driver, and
a number of firmware driver fixes:
- OP-TEE fix for supplicant based device enumeration, and a new
sysfs attribute to needed to fix a race against userspace
- Arm SCMI fix for possible truncation/overflow in the frequency
computations
- Multiple FF-A fixes for the newly added notification support.
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Merge tag 'soc-fixes-6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Arnd Bergmann:
"Most of the changes are devicetree fixes for NXP, Mediatek, Rockchips
Arm machines as well as Microchip RISC-V, and most of these address
build-time warnings for spec violations and other minor issues. One of
the Mediatek warnings was enabled by default and prevented a clean
build.
The ones that address serious runtime issues are all on the i.MX
platform:
- a boot time panic on imx8qm
- USB hanging under load on imx8
- regressions on the imx93 ethernet phy
Code fixes include a minor error handling for the i.MX PMU driver, and
a number of firmware driver fixes:
- OP-TEE fix for supplicant based device enumeration, and a new sysfs
attribute to needed to fix a race against userspace
- Arm SCMI fix for possible truncation/overflow in the frequency
computations
- Multiple FF-A fixes for the newly added notification support"
* tag 'soc-fixes-6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (55 commits)
MAINTAINERS: change the S32G2 maintainer's email address.
arm64: dts: rockchip: Fix eMMC Data Strobe PD on rk3588
ARM: dts: imx28-xea: Pass the 'model' property
ARM: dts: imx7: Declare timers compatible with fsl,imx6dl-gpt
MAINTAINERS: reinstate freescale ARM64 DT directory in i.MX entry
arm64: dts: imx8-apalis: set wifi regulator to always-on
ARM: imx: Check return value of devm_kasprintf in imx_mmdc_perf_init
arm64: dts: imx8ulp: update gpio node name to align with register address
arm64: dts: imx93: update gpio node name to align with register address
arm64: dts: imx93: correct mediamix power
arm64: dts: imx8qm: Add imx8qm's own pm to avoid panic during startup
arm64: dts: freescale: imx8-ss-dma: Fix #pwm-cells
arm64: dts: freescale: imx8-ss-lsio: Fix #pwm-cells
dt-bindings: pwm: imx-pwm: Unify #pwm-cells for all compatibles
ARM: dts: imx6ul-pico: Describe the Ethernet PHY clock
arm64: dts: imx8mp: imx8mq: Add parkmode-disable-ss-quirk on DWC3
arm64: dts: rockchip: Fix PCI node addresses on rk3399-gru
arm64: dts: rockchip: drop interrupt-names property from rk3588s dfi
firmware: arm_scmi: Fix possible frequency truncation when using level indexing mode
firmware: arm_scmi: Fix frequency truncation by promoting multiplier type
...
|
||
|
Linus Torvalds
|
17894c2a7a |
tracing fixes for v6.7-rc4:
- Snapshot buffer issues
1. When instances started allowing latency tracers, it uses
a snapshot buffer (another buffer that is not written to
but swapped with the main buffer that is). The snapshot buffer
needs to be the same size as the main buffer. But when the
snapshot buffers were added to instances, the code to make
the snapshot equal to the main buffer still was only doing it
for the main buffer and not the instances.
2. Need to stop the current tracer when resizing the buffers.
Otherwise there can be a race if the tracer decides to make
a snapshot between resizing the main buffer and the snapshot
buffer.
3. When a tracer is "stopped" in disables both the main buffer
and the snapshot buffer. This needs to be done for instances
and not only the main buffer, now that instances also have
a snapshot buffer.
- Buffered event for filtering issues
When filtering is enabled, because events can be dropped often,
it is quicker to copy the event into a temp buffer and write that
into the main buffer if it is not filtered or just drop the event
if it is, than to write the event into the ring buffer and then
try to discard it. This temp buffer is allocated and needs special
synchronization to do so. But there were some issues with that:
1. When disabling the filter and freeing the buffer, a call to all
CPUs is required to stop each per_cpu usage. But the code
called smp_call_function_many() which does not include the
current CPU. If the task is migrated to another CPU when it
enables the CPUs via smp_call_function_many(), it will not enable
the one it is currently on and this causes issues later on.
Use on_each_cpu_mask() instead, which includes the current CPU.
2. When the allocation of the buffered event fails, it can give
a warning. But the buffered event is just an optimization
(it's still OK to write to the ring buffer and free it).
Do not WARN in this case.
3. The freeing of the buffer event requires synchronization.
First a counter is decremented to zero so that no new uses
of it will happen. Then it sets the buffered event to NULL,
and finally it frees the buffered event. There's a synchronize_rcu()
between the counter decrement and the setting the variable to
NULL, but only a smp_wmb() between that and the freeing of the
buffer. It is theoretically possible that a user missed seeing
the decrement, but will use the buffer after it is free. Another
synchronize_rcu() is needed in place of that smp_wmb().
- ring buffer timestamps on 32 bit machines
The ring buffer timestamp on 32 bit machines has to break the 64 bit
number into multiple values as cmpxchg is required on it, and a
64 bit cmpxchg on 32 bit architectures is very slow. The code use
to just use two 32 bit values and make it a 60 bit timestamp where
the other 4 bits were used as counters for synchronization. It later
came known that the timestamp on 32 bit still need all 64 bits in
some cases. So 3 words were created to handle the 64 bits. But issues
arised with this:
1. The synchronization logic still only compared the counter
with the first two, but not with the third number, so the
synchronization could fail unknowingly.
2. A check on discard of an event could race if an event happened
between the discard and updating one of the counters. The
counter needs to be updated (forcing an absolute timestamp
and not to use a delta) before the actual discard happens.
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Merge tag 'trace-v6.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing fixes from Steven Rostedt:
- Snapshot buffer issues:
1. When instances started allowing latency tracers, it uses a
snapshot buffer (another buffer that is not written to but swapped
with the main buffer that is). The snapshot buffer needs to be the
same size as the main buffer. But when the snapshot buffers were
added to instances, the code to make the snapshot equal to the
main buffer still was only doing it for the main buffer and not
the instances.
2. Need to stop the current tracer when resizing the buffers.
Otherwise there can be a race if the tracer decides to make a
snapshot between resizing the main buffer and the snapshot buffer.
3. When a tracer is "stopped" in disables both the main buffer and
the snapshot buffer. This needs to be done for instances and not
only the main buffer, now that instances also have a snapshot
buffer.
- Buffered event for filtering issues:
When filtering is enabled, because events can be dropped often, it is
quicker to copy the event into a temp buffer and write that into the
main buffer if it is not filtered or just drop the event if it is,
than to write the event into the ring buffer and then try to discard
it. This temp buffer is allocated and needs special synchronization
to do so. But there were some issues with that:
1. When disabling the filter and freeing the buffer, a call to all
CPUs is required to stop each per_cpu usage. But the code called
smp_call_function_many() which does not include the current CPU.
If the task is migrated to another CPU when it enables the CPUs
via smp_call_function_many(), it will not enable the one it is
currently on and this causes issues later on. Use
on_each_cpu_mask() instead, which includes the current CPU.
2.When the allocation of the buffered event fails, it can give a
warning. But the buffered event is just an optimization (it's
still OK to write to the ring buffer and free it). Do not WARN in
this case.
3.The freeing of the buffer event requires synchronization. First a
counter is decremented to zero so that no new uses of it will
happen. Then it sets the buffered event to NULL, and finally it
frees the buffered event. There's a synchronize_rcu() between the
counter decrement and the setting the variable to NULL, but only a
smp_wmb() between that and the freeing of the buffer. It is
theoretically possible that a user missed seeing the decrement,
but will use the buffer after it is free. Another
synchronize_rcu() is needed in place of that smp_wmb().
- ring buffer timestamps on 32 bit machines
The ring buffer timestamp on 32 bit machines has to break the 64 bit
number into multiple values as cmpxchg is required on it, and a 64
bit cmpxchg on 32 bit architectures is very slow. The code use to
just use two 32 bit values and make it a 60 bit timestamp where the
other 4 bits were used as counters for synchronization. It later came
known that the timestamp on 32 bit still need all 64 bits in some
cases. So 3 words were created to handle the 64 bits. But issues
arised with this:
1. The synchronization logic still only compared the counter with
the first two, but not with the third number, so the
synchronization could fail unknowingly.
2. A check on discard of an event could race if an event happened
between the discard and updating one of the counters. The counter
needs to be updated (forcing an absolute timestamp and not to use
a delta) before the actual discard happens.
* tag 'trace-v6.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
ring-buffer: Test last update in 32bit version of __rb_time_read()
ring-buffer: Force absolute timestamp on discard of event
tracing: Fix a possible race when disabling buffered events
tracing: Fix a warning when allocating buffered events fails
tracing: Fix incomplete locking when disabling buffered events
tracing: Disable snapshot buffer when stopping instance tracers
tracing: Stop current tracer when resizing buffer
tracing: Always update snapshot buffer size
|