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Merge tag 'hid-for-linus-2026092202' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
Pull HID fixes from Jiri Kosina:
- new device IDs/quirks (Logitech G502X, Elecom M-XT4DRBK, Steelseries
Arctis 7, Asus Rog Z13 Folio, Lenovo Yoga Slim Gen 11)
- fixes for various code issues found by LLMs
* tag 'hid-for-linus-2026092202' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
selftests/hid: add unnumbered variant to the hid_bpf tests
HID: bpf: fix __hid_bpf_hw_check_params report length
selftests/hid: add define for commonly used buf size
HID: amd_sfh: Validate PCI BAR size before mapping
HID: elecom: fix bus type for M-XGL20DLBK
HID: elecom: Add support for ELECOM M-XT4DRBK (018E)
HID: corsair-void: Fix firmware event packet description
HID: i2c-hid: Add i2c-hid-quirk-bad-input-size quirk for 0911:5288 device
HID: hid-oxp: use cancel_delayed_work_sync() in remove
HID: i2c-hid: add reset quirk for Lenovo Yoga Slim 7x Gen 11 keyboard
HID: roccat: fix locking in roccat_connect() and roccat_disconnect()
HID: steelseries: Add support for Arctis 7 (2018)
HID: logitech-hidpp: Add support for G502 X Lightspeed USB mouse
HID: fix semantic patch and improve its performance
HID: alps: fix use-after-free on input2 registration failure
HID: alps: unregister DualPoint Stick input device on remove
HID: winwing: fix use-after-free in force feedback teardown
HID: multitouch: Add report ID mismatch quirk for ASUS ROG Z13 Folio
HID: wacom: fix OOB read in wacom_wac_pen_serial_enforce()
HID: quirks: add ALWAYS_POLL quirk for SDINNOVATION gaming keyboard
Five are DAMON fixes. One fixes an arm64 contpte bug where DAMON can
write past the end of a page-table page, resulting in memory corruption
and possible crashes.
Two are hugetlb fixes. One fixes an mremap() address calculation bug
which can panic x86-64.
There's also a missing anon_vma publication barrier which can result in
hung tasks, and a writeback fix to keep long cgroup writeback drains from
delaying Tasks-RCU grace periods.
The remainder are smaller fixes and maintenance changes.
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Merge tag 'mm-hotfixes-stable-2026-09-21-17-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM fixes from Andrew Morton:
"14 hotfixes. 10 are cc:stable. 11 are for MM.
Five DAMON fixes: one fixes an arm64 contpte bug where DAMON can write
past the end of a page-table page, resulting in memory corruption and
possible crashes.
Two hugetlb fixes: one fixes an mremap() address calculation bug which
can panic x86-64.
There's also a missing anon_vma publication barrier which can result
in hung tasks, and a writeback fix to keep long cgroup writeback
drains from delaying Tasks-RCU grace periods.
The remainder are smaller fixes and maintenance changes"
* tag 'mm-hotfixes-stable-2026-09-21-17-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
MAINTAINERS: update Xu Xin's email
writeback: report a Tasks-RCU quiescent state per cgwb drain pass
mm/damon/core: reset invalid quota->charge_target_from
MAINTAINERS: add Baoquan and Baolin as MGLRU reviewers
mm/rmap: fix missing barrier between anon_vma init and vma->anon_vma publish
mm/hugetlb: preserve mremap address delta when skipping page tables
mm/damon/core: fix unconditionally skip last region
mm/damon/vaddr: avoid hw-driven pte updates during damon_hugetlb_mkold()
mm/damon/core: allow esz to be set to zero
mm/damon/ops-common: use a page-aligned address in damon_ptep_mkold()
ocfs2: make ocfs2_calc_xattr_init() return void
mailmap: update Haowen Bai's email address
selftests/cgroup: account for zswap shrinker writeback
mm/hugetlb: do not dissolve gigantic pages without runtime support
- Reject the loading of a potentially problematic microcode version
on Intel Granite Rapids systems (Chang S. Bae)
- On FRED, reconstruct the proper #GP context for rejected INT
instructions, to fix a signal ABI regression (Matthew Schwartz)
- Add a test for this signal ABI regression the x86
self-test suite (Matthew Schwartz)
- Don't emit the new and not yet properly supported EGPR instructions
(%r16-%r31) on CONFIG_X86_NATIVE_CPU=y builds (Chang S. Bae)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-urgent-2026-09-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
- Reject the loading of a potentially problematic microcode version
on Intel Granite Rapids systems (Chang S. Bae)
- On FRED, reconstruct the proper #GP context for rejected INT
instructions, to fix a signal ABI regression (Matthew Schwartz)
- Add a test for this signal ABI regression the x86
self-test suite (Matthew Schwartz)
- Don't emit the new and not yet properly supported EGPR instructions
(%r16-%r31) on CONFIG_X86_NATIVE_CPU=y builds (Chang S. Bae)
* tag 'x86-urgent-2026-09-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/build/64: Prevent native builds from generating EGPR use
selftests/x86: Check signal state for rejected software interrupts
x86/fred: Reconstruct the #GP context for rejected INT instructions
x86/microcode/intel: Reject problematic loading on Granite Rapids systems
- Fix hypercall arguments when resetting EL2 vectors during hibernation
- Fix hibernation with 52-bit capable kernels on machines without
52-bit addressing, similarly to the recent kexec fix
- Fix a bunch of clumsy codegen issues with our per-cpu accessors
- Fix MTE ptrace documentation to reflect the de-facto ABI behaviour
- Fix pthread_join() usage in MTE selftest
- Fix port selection in the Arm CMN PMU driver
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"In this batch we've got a couple of hibernation fixes, a couple of
minor MTE fixes, some per-cpu codegen fixes (which were found as part
of Mark's series adding preemptible this_cpu_*() operations) and a fix
for the Arm CMN PMU driver.
Summary:
- Fix hypercall arguments when resetting EL2 vectors during
hibernation
- Fix hibernation with 52-bit capable kernels on machines without
52-bit addressing, similarly to the recent kexec fix
- Fix a bunch of clumsy codegen issues with our per-cpu accessors
- Fix MTE ptrace documentation to reflect the de-facto ABI behaviour
- Fix pthread_join() usage in MTE selftest
- Fix port selection in the Arm CMN PMU driver"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: mte: Fix PTRACE_{PEEK,POKE}MTETAGS error documentation
kselftest/arm64: Fix size of thread_data values for pthread_join()
arm64: percpu: Fix LSE operations on {8,16}-bit types
arm64: percpu: Fix this_cpu_and() mask generation
arm64: percpu: Fix this_cpu_write() casting
arm64: hibernate: clone only the linear map that exists at runtime
perf/arm-cmn: Fix wp_dev_sel2 setting for multi-DTM configurations
arm64: hibernate: pass HVC_SET_VECTORS args to the resume hvc
The test_no_invasive_cgroup_shrink selftest checks that when a cgroup has
zswapped out more memory than memory.zswap.max, it does not trigger
writeback for other cgroups. To do this, it compares the writeback count
in a control cgroup and makes sure that it is 0, and then checks the
writeback count in an aggressor cgroup who does expect to see writeback.
However, when the zswap shrinker is enabled, the victim cgroup can see
legitimate writebacks not triggered by the aggressor. In some Meta CI
tests, we have seen this failure mode happen.
Instead of checking that the victim cgroup has 0 writeback, compare the
writeback values before and after the aggressor runs and check that the
victim cgroup did not perform any additional writeback. Note that this
can still lead to probabilistic failures if writebacks take longer than
5 seconds, but this should fix the systematic failure case and make
"not ok test_no_invasive_cgroup_shrink" less likely.
Link: https://lore.kernel.org/20260902194521.3652178-1-joshua.hahnjy@gmail.com
Fixes: b5ba474f3f ("zswap: shrink zswap pool based on memory pressure")
Signed-off-by: Joshua Hahn <joshua.hahnjy@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reported-by: Krush Chavan <krushchavan@outlook.com>
Suggested-by: Nhat Pham <nphamcs@gmail.com>
Cc: <stable@vger.kernel.org>
Add a test of the signal ABI for INT instructions in both 32-bit and
64-bit processes. Check the signal number, trap number, error code,
si_code, si_addr, instruction pointer and RF/TF state against legacy
IDT behavior. Include a 15-byte prefixed INT to check that IP uses the
hardware instruction length. Exercise both INT3 encodings, INT4, UD2
and HLT to cover the unchanged trap and fault paths.
Run each instruction with TF clear and set. Resume at a known NOP after
handling the signal and check that single-stepping traps after the NOP.
Also drive INT 0x2d under ptrace, which resumes through the fault frame
rather than sigreturn and so exposes a stale FRED software event flag.
Start from an INT3 stop, whose FRED frame has no software event flag,
instead of the syscall frame of raise(SIGSTOP). Single-step into the INT
and check that the fault reports its address. Then suppress SIGSEGV and
resume at the NOP, once with PTRACE_SINGLESTEP and once with PTRACE_CONT
and TF set. Section 6.2.3 of the Intel FRED specification [1] specifies
the immediate single-step trap caused by returning with both that flag
and TF set. Check that each trap occurs after the NOP, rather than at
its address.
Report whether the CPU supports FRED, since a pass looks the same on
either entry path. INT 0x80 with IA32 emulation disabled and a 64-bit
tracer of a 32-bit tracee are not covered.
Both variants pass all 29 checks on a non-FRED AMD host and on Panther
Lake with FRED enabled and the fix applied. With the same binaries on
unpatched Panther Lake, 16 signal-context checks fail and the first
ptrace check reports the IP after the INT. The two dependent ptrace
resume checks are not reached.
[1] Intel Flexible Return and Event Delivery (FRED) Specification,
revision 9.0 (346446-009US), section 6.2.3.
Signed-off-by: Matthew Schwartz <matthew.schwartz@linux.dev>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://cdrdv2.intel.com/v1/dl/getContent/678938 # [1]
Link: https://patch.msgid.link/20260917230907.2080792-3-matthew.schwartz@linux.dev
Previous releases - regressions:
- netfilter: hold reference on ct until flow is released
- bridge:
- move switchdev call outside rcu
- vlan: fix bugs caused by switchdev deletion errors
- wifi:
- mac80211: reset state when starting AP fails
- cfg80211: don't free driver-owned scan requests
- tcp: don't call skb_clone_and_charge_r() for close()d listener in tcp_v6_do_rcv().
- mptcp: return sk_wait_data() errors from recvmsg()
- xfrm: serialize state GC with device state flush
- drop_monitor: synchronize tracepoint unregistration on error path
- bluetooth:
- eir: validate service data length before reading UUID
- hci_sync: serialize local codec list cleanup
- RFCOMM: avoid socket lock inversion in listener cleanup
- eth: lan743x: fix RX checksum use-after-free
- eth: mvpp2: prevent buffer overflow in page_pool allocation
Previous releases - always broken:
- core: lock the socket in sock_gettstamp()
- neighbour: enforce min/max to NDTPA_INTERVAL_PROBE_TIME_MS.
- sched: codel: bound the dropping loop per dequeue call
- wifi: mac80211: include TIM bitmap control for buffered S1G mcast traffic
- psp: avoid conflicts with skb->decrypted and sk_validate_xmit_skb()
- xfrm: fix stack OOB read in iptfs_skb_reset_frag_walk()
- bluetooth: hci_qca: do not write to the serial port after it is closed
- dsa: mxl862xx: disable the stats poll on teardown
- eth: stmmac: fix TSO header length truncation
- eth: ip_tunnel: initialize `options_len` before referencing options
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-7.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from Netfilter, Bluetooth, IPSec and WiFi.
Previous releases - regressions:
- netfilter: hold reference on ct until flow is released
- bridge:
- move switchdev call outside rcu
- vlan: fix bugs caused by switchdev deletion errors
- wifi:
- mac80211: reset state when starting AP fails
- cfg80211: don't free driver-owned scan requests
- tcp: don't call skb_clone_and_charge_r() for close()d listener in
tcp_v6_do_rcv()
- mptcp: return sk_wait_data() errors from recvmsg()
- xfrm: serialize state GC with device state flush
- drop_monitor: synchronize tracepoint unregistration on error path
- bluetooth:
- eir: validate service data length before reading UUID
- hci_sync: serialize local codec list cleanup
- RFCOMM: avoid socket lock inversion in listener cleanup
- eth:
- lan743x: fix RX checksum use-after-free
- mvpp2: prevent buffer overflow in page_pool allocation
Previous releases - always broken:
- core: lock the socket in sock_gettstamp()
- neighbour: enforce min/max to NDTPA_INTERVAL_PROBE_TIME_MS.
- sched: codel: bound the dropping loop per dequeue call
- wifi: mac80211: include TIM bitmap control for buffered S1G mcast
traffic
- psp: avoid conflicts with skb->decrypted and sk_validate_xmit_skb()
- xfrm: fix stack OOB read in iptfs_skb_reset_frag_walk()
- bluetooth: hci_qca: do not write to the serial port after it is
closed
- dsa: mxl862xx: disable the stats poll on teardown
- eth:
- stmmac: fix TSO header length truncation
- ip_tunnel: initialize `options_len` before referencing options"
* tag 'net-7.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (159 commits)
mptcp: fix bad accounting in __mptcp_subflow_push_pending()
mptcp: close race between scheduler and state change
mptcp: avoid unneeded actions on subflow reset
net: skbuff: do not leave stale header offsets after pskb_carve()
selftests: net: packetdrill: test exclusion of old ACK from TCP fast path
tcp: exclude old ACKs from tcp fast path
dpll: reject a reference sync pin which is not on the pin's dpll
net: mvpp2: prevent buffer overflow in page_pool allocation
net: macb: fix ordering around PTP timestamp read
selftests: drv-net: psp: test PSP and TCP ULP mutual exclusion
net: psp: avoid conflicts with skb->decrypted and sk_validate_xmit_skb()
net: stmmac: preserve real_num_tx_queues on mqprio setup failure
net: stmmac: propagate FPE preemption-class mapping errors
net: wwan: t7xx: validate the netif index in t7xx_ccmni_recv_skb()
net: wwan: mhi_wwan_mbim: check skb_copy_bits() return value
net: wwan: mhi_wwan_mbim: guard against a cyclic NDP chain
net: ethernet: cortina: Ack RX overrun interrupt correctly
net: lock the socket in sock_gettstamp()
eth: fbnic: ring the doorbell if a burst ends in a drop
net: netsec: fix device_node reference leak on phy_np
...
Add a packetdrill test for an in-sequence data segment carrying an
excessively old ACK.
Verify that the segment falls through from the TCP fast path to the slow
path, where the existing ACK validation rejects it and sends a challenge
ACK. The payload is not accepted and RCV.NXT remains unchanged.
Based on the reproducer from Commit 3d501dd326
("tcp: do not accept ACK of bytes we never sent").
Signed-off-by: Inbal Schussheim <inbal.lipshtat@mail.huji.ac.il>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20260914090408.1435080-3-inbal.lipshtat@mail.huji.ac.il
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Test both setting PSP after TLS ULP, and TLS ULP after PSP.
Add CONFIG_TLS=y to the drivers/net/config.
Signed-off-by: Daniel Zahka <daniel.zahka@gmail.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20260915-psp-ktls-fix-v2-2-0eedc3b148ec@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add tdc cases locking the codel/fq_codel small-interval uAPI after
the dropping-loop bound (previous patch): sub-tick and two-tick
intervals are ACCEPTED (the loop bound makes them safe), the
1024us boundary is accepted, and a sub-tick target sojourn delay is
accepted (it does not participate in the control law):
codel: 6e44/a8c3/a695/9793 - interval 1us/3us/1024us and
target 1us accepted (rendered 0us/2us/1.02ms/0us by tc)
fq_codel: 1b4d/3540/49c5/3e0f - interval 1us/3us/1024us and
target 1us accepted
The positive cases match the full rendered qdisc line (tc renders
interval 1us as 0us, 3us as 2us, 1024us as 1.02ms), mirroring the
existing tests in these files.
These cases do not test the dropping-loop bound itself: tdc cannot
observe per-dequeue drop counts. c797 (fq_codel target 1 interval 1)
passes unmodified on the patched kernel, which is the uAPI evidence
for the previous patch.
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Link: https://patch.msgid.link/QDISC-1L5H.v1.20260912080102@mojatatu.com.2
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add tests for cleanup after a batched RTM_DELACTION request fails at
a gact action bound to a filter. Check that subsequent actions retain
their original reference counts and that earlier successful deletions
are preserved.
Cover failures at the first and middle entries. Verify that a remaining
unbound action can be removed with one subsequent delete.
Signed-off-by: Xuanqiang Luo <luoxuanqiang@kylinos.cn>
Link: https://patch.msgid.link/20260910093413.34509-3-xuanqiang.luo@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The new test case creates two SCCs so that each of them
has multiple scc_index.
Without patch, GC cannot free the sockets and the test fails.
# RUN scm_rights.dgram.mixed_lowpoints ...
# scm_rights.c:176:mixed_lowpoints:Expected 0 (0) == ret (12)
# mixed_lowpoints: Test terminated by assertion
# FAIL scm_rights.dgram.mixed_lowpoints
not ok 5 scm_rights.dgram.mixed_lowpoints
...
# FAILED: 45 / 50 tests passed.
# Totals: pass:45 fail:5 xfail:0 xpass:0 skip:0 error:0
With the patch, all tests pass.
# PASSED: 50 / 50 tests passed.
# Totals: pass:50 fail:0 xfail:0 xpass:0 skip:0 error:0
Signed-off-by: Kuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260912030852.1467872-3-kuniyu@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Cover the new TCA_HHF_HH_FLOWS_LIMIT bound: values above 2*HH_FLOWS_CNT
(4294967295, 65536, 2049) are rejected with the configured limit left
untouched on both the change and the add path, the boundary value 2048 is
accepted (installed at 100 first so the boundary change is load-bearing),
and an add-time hh_limit 500 is preserved instead of being clobbered by
the default.
Reviewed-by: Victor Nogueira <victor@mojatatu.com>
Tested-by: hybris <hybris@mojatatu.ai>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/QDISC-B855.v1.20260911153152@mojatatu.com.2
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
A bug appeared in hid_bpf_dispatch.c where it wasn't properly handling
unnumbered reports. Add a device variant without report IDs so we can
also test them.
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
If we want to add another report descriptor without report IDs with a
report size bigger than 10, we have multiple magic values to replace.
Put a #define once and for all, so we don't have dangling ones.
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
- Revert a bad fix, likely LLM-generated, in the pointer masking code
that confused the RISC-V hardware pointer masking implementation
with the Linux kernel tagged address feature
- Fix unexpected faults caused by kprobe instruction slot writes when
!CONFIG_STRICT_MODULE_RWX
- Fix unexpected faults on minimal configurations during runtime code
patching on !CONFIG_STRICT_MODULE_RWX systems
- Fix a misplaced variable clear causing incorrect reuse of previous
values in the RISC-V hardware feature probing code
- Fix two bugs in the PMU SBI perf code on rv32: use BIT_ULL rather
than BIT on 64-bit masks; and use a bitmap rather than an unsigned
long on a quantity that can exceed 32 bits
And a few miscellaneous cleanups:
- Avoid a potential dereference-before-NULL-pointer-check bug in the
PMU SBI perf driver
- Simplify the rv32 bug table code by using
CONFIG_GENERIC_BUG_RELATIVE_POINTERS (following x86 and PPC)
- Report the RISC-V standard ISA extensions Z[v]fhmin when support is
claimed for the superset RISC-V standard ISA extensions Z[v]fh; and
simplify our FPU test code to only check for the presence of the D
extension
- Use an existing kernel string helper in place of some open-coded
code in kernel/usercfi.c
- Fix some yamllint issues in the RISC-V DT bindings for CPUs
- Convert one use of __ASSEMBLY__ to __ASSEMBLER__ that snuck into the
RISC-V CFI selftest code
- Update the translation for the simplified Chinese translation of the
RISC-V kernel patch acceptance policy
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Merge tag 'riscv-for-linus-7.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Paul Walmsley:
"From a RISC-V point of view, there's one notable fix here, reverting
an earlier bogus fix to the pointer masking code. Fortunately the
practical impact appears to be small.
- Revert a bad fix, likely LLM-generated, in the pointer masking code
that confused the RISC-V hardware pointer masking implementation
with the Linux kernel tagged address feature
- Fix unexpected faults caused by kprobe instruction slot writes when
!CONFIG_STRICT_MODULE_RWX
- Fix unexpected faults on minimal configurations during runtime code
patching on !CONFIG_STRICT_MODULE_RWX systems
- Fix a misplaced variable clear causing incorrect reuse of previous
values in the RISC-V hardware feature probing code
- Fix two bugs in the PMU SBI perf code on rv32: use BIT_ULL rather
than BIT on 64-bit masks; and use a bitmap rather than an unsigned
long on a quantity that can exceed 32 bits
And a few miscellaneous cleanups:
- Avoid a potential dereference-before-NULL-pointer-check bug in the
PMU SBI perf driver
- Use CONFIG_GENERIC_BUG_RELATIVE_POINTERS to simplify the rv32 bug
table code (like x86 and PPC)
- Report the RISC-V standard ISA extensions Z[v]fhmin when support is
claimed for the superset RISC-V standard ISA extensions Z[v]fh; and
simplify our FPU test code to only check for the presence of the D
extension
- Use an existing kernel string helper in place of some open-coded
code in kernel/usercfi.c
- Fix some yamllint issues in the RISC-V DT bindings for CPUs
- Convert one use of __ASSEMBLY__ to __ASSEMBLER__ that snuck into
the RISC-V CFI selftest code
- Update the translation for the simplified Chinese translation of
the RISC-V kernel patch acceptance policy"
* tag 'riscv-for-linus-7.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: skip software algning code for HAVE_EFFICIENT_UNALIGNED_ACCESS
kselftest/riscv: Replace __ASSEMBLY__ with __ASSEMBLER__
docs/zh_CN: Update arch/riscv/patch-acceptance.rst translation
dt-bindings: riscv: cpus: Fix yamllint style issues
riscv: hwprobe: simplify has_fpu() to check D extension only
perf: RISC-V: check cpu_hw_evt before dereference in overflow IRQ
riscv: report Zfhmin/Zvfhmin when Zfh/Zvfh are present
perf: RISC-V: store available counter mask as bitmap
perf: RISC-V: use BIT_ULL for u64 overflow masks
riscv: bug: Make RV32 use GENERIC_BUG_RELATIVE_POINTERS
riscv: hwprobe: initialize pair->value in hwprobe_one_pair()
riscv: use string helper in setup_global_riscv_enable()
Revert "riscv: Reset pmm when PR_TAGGED_ADDR_ENABLE is not set"
riscv: patch: skip fixmap mapping when kernel text is already writable
riscv: mm: make EXECMEM_KPROBES writable without CONFIG_STRICT_MODULE_RWX
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Merge tag 'block-7.3-20260911' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull block fixes from Jens Axboe:
- Fix the start and length check added to iov_iter_extract_bvecs(),
which used iter_iov_addr()/iter_iov_len() helpers that aren't safe
for the ITER_BVEC/FOLIOQ/etc iterator types passed
- sunvdc fixes for an -EIO issue from lack of retries, and unmapping
LDC cookies when the descriptor send fails
- Clear force_abort in ublk_queue_reset_io_flags()
- ublk selftest install fix
* tag 'block-7.3-20260911' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
selftests: ublk: add batch IO cases to recover_03
ublk: clear force_abort in ublk_queue_reset_io_flags()
sunvdc: fix -EIO issue due to lack of retries
sunvdc: unmap LDC cookies when the descriptor send fails
block: Fix start and length check added to iov_iter_extract_bvecs()
selftests: ublk: install test_common.sh and trace/ scripts
pthread_join() stores the thread's return value (a "void *", i.e.
8 bytes on 64 bit computers) into the address that is passed as second
parameter. However, the entries of thread_data are only normal "int"s,
i.e. only 4 bytes. The additional 4 bytes of the return value clobber
whatever is adjacent on the stack, i.e. other members of the thread_data
array (which will be re-written in the next iteration of the for-loop,
so that nobody noticed this problem), or another other local variable
on the stack for the last iteration. Use "intptr_t" to declare the
thread_data array entries with the correct size.
Fixes: 29f0808816 ("kselftest/arm64: check GCR_EL1 after context switch")
Cc: stable@vger.kernel.org
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Will Deacon <will@kernel.org>
Including fixes from Netfilter, Bluetooth and WPAN.
Current release - new code bugs:
- Bluetooth: hci_sync: fix not setting CE length properly
- eth: enic: match mailbox replies to request numbers
Previous releases - regressions:
- tunnels: drop stale dst when building an ICMP error for PMTUD
- ipv6: null-check fib6_node before accessing in __ip6_del_rt_siblings()
(bug in the rtnl_lock -> RCU conversion)
- eth: bnxt_en: fix crashes on Thor2 due to OOB coalescing buffer accesses
- eth: bnxt_en: prevent queue stop with deferred completions
Previous releases - always broken:
- eth: ice: don't dereference pointers from TP_printk()
- eth: fix OOB writes on ethtool flow rule dump in 3 drivers
- eth: mlx5: fix FEC configuration with RS_544_514_INTERLEAVED_QUAD
- dsa: tag_brcm: legacy FCS: request needed tailroom
Misc:
- net: cap tx_queue_len at S16_MAX to prevent oversized ring alloc
- ipv6: flowlabel: cap duplicate leases per socket
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-7.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Nothing too exciting, usual stream of fixes. Including fixes from
Netfilter, Bluetooth and WPAN.
Current release - new code bugs:
- Bluetooth: hci_sync: fix not setting CE length properly
- eth: enic: match mailbox replies to request numbers
Previous releases - regressions:
- tunnels: drop stale dst when building an ICMP error for PMTUD
- ipv6: null-check fib6_node before accessing in __ip6_del_rt_siblings()
(bug in the rtnl_lock -> RCU conversion)
- eth: bnxt_en:
- fix crashes on Thor2 due to OOB coalescing buffer accesses
- prevent queue stop with deferred completions
Previous releases - always broken:
- eth:
- ice: don't dereference pointers from TP_printk()
- fix OOB writes on ethtool flow rule dump in 3 drivers
- mlx5: fix FEC configuration with RS_544_514_INTERLEAVED_QUAD
- dsa: tag_brcm: legacy FCS: request needed tailroom
Misc:
- net: cap tx_queue_len at S16_MAX to prevent oversized ring alloc
- ipv6: flowlabel: cap duplicate leases per socket"
* tag 'net-7.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (164 commits)
selftests: tc-testing: test action batch failure cleanup
net/sched: act_api: release all action references on NEWACTION failure
openvswitch: fix wrong flag value in get_ipv6_ext_hdrs()
ipmr: account multicast table and route memory
net: phy: dp83td510: handle the active-high LED polarity mode
net: macb: initialize PTP state before registering clock
net: hsr: enable promiscuous mode on interlink port with fwd offload
ipv6: fix fib6 walker UAF on seq stop
net: stmmac: fix TX descriptor availability check for TSO traffic
net/rds: fix tcp stream corruption with large pages
net: mana: restore the XDP program pointer when pre-allocation fails
net: phy: dp83867: handle the active-high LED polarity mode
octeontx2-af: fix PF/CGX debugfs PCI bus lookup
net: net_failover: Fix the deadlock in net_failover_slave_name_change()
net: phy: mediatek-ge: disable EEE on the MT7530 PHY
tcp: reject non zerocopy devmem tx
net: ethernet: mtk_eth_soc: populate lpi_interfaces to fix EEE support
net: dsa: mt7530: populate lpi_interfaces to fix EEE support
net: hinic: fix mailbox segment buffer overflow
net: sun4i-emac: fix missing of_node_put() for phy_node
...
Every ublk test script sources test_common.sh from its own directory:
. "$(cd "$(dirname "$0")" && pwd)"/test_common.sh
and test_generic_02/12 additionally run bpftrace against the scripts in
trace/. Neither test_common.sh nor trace/ is listed in TEST_FILES, so
"make install" does not copy them into the install directory and every
ublk test fails when run from there:
./test_generic_02.sh: line 4: .../kselftest_install/ublk/test_common.sh: No such file or directory
./test_generic_02.sh: line 8: _have_program: command not found
The bpftrace tests are affected even when bpftrace is installed: the
missing trace/*.bt makes bpftrace exit immediately, and the tests then
report a skip rather than a failure, which hides the problem.
Add both to TEST_FILES, matching how other selftests ship their sourced
helpers (see kexec/kexec_common_lib.sh and zram/zram_lib.sh).
Fixes: 6aecda00b7 ("selftests: ublk: add kernel selftests for ublk")
Fixes: 723977cab4 ("selftests: ublk: add generic_01 for verifying sequential IO order")
Cc: stable@vger.kernel.org # v6.15+
Assisted-by: Kiro:claude-opus-5
Signed-off-by: Mahmoud Nagy Adam <mngyadam@amazon.de>
Reviewed-by: Ming Lei <tom.leiming@gmail.com>
Link: https://patch.msgid.link/20260909132602.68852-2-mngyadam@amazon.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Add tests for cleanup after a batched RTM_NEWACTION request fails.
Replace an existing gact action bound to a filter, then fail a later
entry by requesting goto chain without a classifier context.
Check that the bound action's reference count returns to its original
value. Also cover a successfully initialized new action between the
bound action and the failing entry, verifying that its reserved index
can be reused. Repeat the bound action in another batch to check that
each temporary reference to the same action is released.
Signed-off-by: Xuanqiang Luo <luoxuanqiang@kylinos.cn>
Reviewed-by: Jamal Hadi Salim <jhs@mojatatu.com>
Link: https://patch.msgid.link/20260909070336.32979-3-xuanqiang.luo@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add 4 tdc tests for the cls_route bugs fixed earlier in this series:
- Delete a route filter that was moved to another bucket (a7d2):
Validates that deleting a filter, and making a bucket empty, does not
leave a dangling empty bucket
- Try to change a route filter onto an already used handle (c05a):
Validates that attempting to change an existing filter's handle to an
already taken one fails
- Replace a route filter that shares its key with another filter (3f21):
Validates that an in-place replace keeps the handle userspace named
the filter by, rather than dropping the 0x7F00 bits from it
- Replace both route filters sharing a key (9d0e):
Validates that replacing one of the two does not make the other one
unreplaceable
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Victor Nogueira <victor@mojatatu.com>
Link: https://patch.msgid.link/20260907192133.2639067-5-victor@mojatatu.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
mmap() is documented to return MAP_FAILED on error, but
tm-signal-context-force-tm.c compares the return value against
(void *)-1. Replace these with the standard MAP_FAILED macro for
better readability and type safety.
Signed-off-by: longlong yan <yanlonglong@kylinos.cn>
Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com>
Reviewed-by: Amit Machhiwal <amachhiw@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260722023428.932-1-yanlonglong@kylinos.cn
tcheck() is used to check the current transaction state (active,
suspended, doomed) via the "tcheck" instruction, which writes its
result into CR field 0. The inline asm declared a GPR output operand
for this result but never actually moved the CR into it.
Every caller (tcheck_doomed(), tcheck_active(), tcheck_suspended(),
tcheck_transactional()) has effectively been testing bits of an unrelated,
arbitrary register value since this helper was introduced.
The "& 4" mask discards the TDOOMED and TS_lsb (suspended) bits before
they ever reach the callers, so tcheck_doomed() and tcheck_suspended()
can never return true, and tcheck_transactional() degrades to being
equivalent to tcheck_active().
Fix tcheck() to actually move CR into the output register with mfcr,
and widen the mask from "& 4" to "& 0xf" so the full CR0 nibble
(TDOOMED | TS_msb | TS_lsb | reserved) is preserved for the callers.
This bug has been present since tcheck() was introduced.
Link: https://bugs.launchpad.net/bugs/2107442
Fixes: 8e03bd4e70 ("selftests/powerpc: Add TM tcheck helpers in C")
Signed-off-by: Thibault Ferrante <thibault.ferrante@canonical.com>
Reported-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com>
Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com>
Closes: https://lore.kernel.org/all/364996ce-aba2-4213-8d20-7dd481b43fe6@linux.ibm.com/
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260907215420.1258678-1-thibault.ferrante@canonical.com
commit 79104becf4 ("sched/fair: Forfeit vruntime on yield") changed
yield_task_fair() to only bump the deadline when the entity is eligible
(vruntime <= avg_vruntime). When the entity is ineligible the yield
becomes a complete no-op from scheduling perspective.
lost_exception_test calls sched_yield() 100,000 times per iteration to
race the EBB exception delivery with a context switch to the eat_cpu
companion process. After enough iterations the test process's vruntime
races ahead of avg_vruntime (each eligible yield bumps vruntime to
deadline, then advances deadline by one slice). Once ineligible,
yield_task_fair() does nothing: so the scheduler won't pick the
eat_cpu child. No context switch occurs, the PMAO race is never
triggered, and ebb_count stays at 0 forever causing the test to
hang until timeout.
Fix by replacing sched_yield() with nanosleep(0, 1ns). nanosleep() goes
through hrtimer_nanosleep() -> do_nanosleep(), which puts the task into
TASK_INTERRUPTIBLE and removes it from the run queue entirely. This
guarantees the scheduler picks the eat_cpu child, restoring the
context-switch guarantee the test requires. The 1ns duration is enough
to engage the hrtimer path while keeping the sleep effectively
instantaneous; the same race window between PMU overflow and context
switch is preserved.
Reported-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com>
Signed-off-by: Athira Rajeev <atrajeev@linux.ibm.com>
Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260903074036.63309-1-atrajeev@linux.ibm.com
When the value for a MIB counter is required, mptcp_lib_get_counter is
called. It tries to use the cache, if available. If not it falls back to
calling 'nstat' directly by looking at the absolute counters.
That's an issue for tests that don't recreate the netns for each
subtest. In this case, 'nstat -a' will look at the counters for the
netns.
Instead, it should look at the increment for the current test, by using
the history recorded in /tmp/<ns>.nstat, if available, and not using
'-a' which was dumping the absolute values.
While at it, rename the previous 'hist' variable to 'cache' as it was
used to look at the cache, not the nstat history.
Fixes: 71388a9f33 ("selftests: mptcp: lib: get counters from nstat history")
Cc: stable@vger.kernel.org
Reviewed-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20260908-net-mptcp-misc-fixes-7-3-rc1-v2-12-df1de70348b6@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In case of errors, mptcp_lib_pr_nstat is called to dump the nstat
counters, but for some tests, it was dumping the counters for all
subtests, not just the current one.
That's an issue for tests that don't recreate the netns for each
subtest, e.g. mptcp_connect.sh. In this case, 'nstat -a' will look at
the absolute counters since the creation of the netns, making
debugging harder.
Instead, it should dump the counters for the current test, by using the
history recorded in /tmp/<ns>.nstat if available, and not using '-a'
which was dumping the absolute values instead of calculating increments.
While at it, rename the previous 'hist' variable to 'cache' as it was
used to look at the cache, not the nstat history.
Fixes: 658e531417 ("selftests: mptcp: join: dump stats from history")
Cc: stable@vger.kernel.org
Reviewed-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20260908-net-mptcp-misc-fixes-7-3-rc1-v2-11-df1de70348b6@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
At the end of 'sock_connect_mptcp()', it calls 'freeaddrinfo(addr)',
the 'peer' pointer (which points into 'addr') remains. Later, the main
loop uses this peer pointer for reconnection attempts. If the memory has
been freed and reused, the address data could be overwritten, resulting
in an invalid remote address.
This patch keeps the addrinfo list allocated for the whole process
lifetime so "peer" remains valid across reconnects; the memory will be
released at exit() time.
Fixes: 05be5e273c ("selftests: mptcp: add disconnect tests")
Cc: stable@vger.kernel.org
Suggested-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Gang Yan <yangang@kylinos.cn>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20260908-net-mptcp-misc-fixes-7-3-rc1-v2-7-df1de70348b6@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Use focused KUnit tests to exercise the renderer's internal boundary and
composition contracts with synthetic scratch states, including both
sibling-helper evaluation orders. Check the exact output and
reservation boundaries, including a four-byte octal escape accepted at
exact capacity and rejected one byte short. Also verify an unchanged
cursor on failure, that bracketed process names and embedded NUL bytes
remain data, and that input ellipsis bytes are escaped rather than
mistaken for the raw truncation marker.
The composition test requires generic trace output helpers. Enable
CONFIG_FTRACE and CONFIG_SCHED_TRACER because the latter selects the
otherwise-hidden CONFIG_TRACING support required by
trace_print_flags_seq().
Use kselftests to exercise the complete tracefs path for both affected
filesystem events. A valid path containing 2640 spaces exceeds the
scratch output budget. Require its escaped prefix to end in the raw
UTF-8 ellipsis while access_rights and blockers remain intact.
This division keeps the exact safety contract compiler-independent while
proving that real tracepoints preserve their surrounding symbolic
fields. The end-to-end assertions fail after a full fix revert with
both GCC and Clang, while the composition KUnit test fails if the
scratch reserve is removed.
Cc: Günther Noack <gnoack@google.com>
Link: https://patch.msgid.link/20260907154401.124362-2-mic@digikod.net
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Two previous commits fixed overflow of UDP length when setsockopt
IP(V6)_MTU_DISCOVER is set to IPV6_PMTUDISC_DO or IP(V6)_PMTUDISC_PROBE,
and a large packet is sent over a netdev with an unusually large MTU.
This commit adds the selftests that replicate the described steps to
reproduce for IPv6 and IPv4, and also one more test that ensures that
sending UDP jumbograms over a raw socket is still possible after the
fix.
Signed-off-by: Alice Mikityanska <alice@isovalent.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20260901195714.673548-4-alice.kernel@fastmail.im
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The landlock_deny_scope_abstract_unix_socket event captures binary
socket names with __string_len(), whose dynamic field reserves an extra
byte for the NUL terminator. The printer subtracts this byte before
escaping the content.
Exercise the minimum accepted address length, which has no name content,
and the maximum sockaddr_un length, which has 107 content bytes. Check
the exact trace output at both boundaries. The existing stream and
datagram variants share this event, so the boundary variants only need
the stream path.
Because these boundary names are fixed, run the fixture in a private
network namespace. Abstract UNIX socket names are scoped by network
namespace, preventing concurrent bind() calls from colliding.
The lower-bound test confirms that the subtraction recovers zero instead
of underflowing.
Cc: Günther Noack <gnoack@google.com>
Link: https://patch.msgid.link/CAL4aGcVcT0VWVFmGi_vLqxxZ9KdOHfGXYZtKjBdvoUyFjbu5=A@mail.gmail.com
Link: https://patch.msgid.link/20260907103503.109461-1-mic@digikod.net
Signed-off-by: Mickaël Salaün <mic@digikod.net>
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Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Pull bpf fixes from Alexei Starovoitov:
"This mainly contains verifier fixes that address bugs reported by
Nicholas Carlini.
- Fix incorrect non-NULL inference in pointer comparisons: pointer
types that may be NULL at runtime, pointers with unbounded offsets,
JMP32 comparisons with zero, and imprecise zero registers (Eduard
Zingerman)
- Fix precision tracking for half-dead zero spills, ld_abs/ld_ind
implicit subprog exit, bpf_loop() callbacks, linked scalar ids and
NULL call arguments (Eduard Zingerman)
- Reject BPF_PSEUDO_FUNC reference to the main program, fix zero
extension of arena 32-bit cmpxchg, don't rewrite bpf_fastcall
patterns entered by a jump (Eduard Zingerman)
- Fix percpu map update and BPF_F_CPU validation with sparse CPU IDs
(Hui Su)
- Fix NULL-ptr-derefs in bpf_snprintf_btf() for void and VAR types,
and reject key-less BTF for hash maps (Jiayuan Chen)
- Various fixes (Kumar Kartikeya Dwivedi):
- Fix out-of-bounds access in disassembler on invalid LDSX
instruction
- mark siginfo of signal tracepoints as scalar and
sched_process_wait argument as nullable
- mark faultable stack helpers as sleepable
- reject tail calls and legacy packet loads from callbacks
- enforce rbtree callback lock restrictions for resilient locks
- require MEM_PERCPU for percpu kptr stores
- clear NON_OWN_REF after RCU protection ends
- mark NULL kptr stores precise
- preserve inner map identity in callback frames
- reject non-scalar bpf_loop() iteration counts
- Fix trampoline allocation slowdown on x86 by using
EXECMEM_MODULE_DATA (Mike Rapoport)
- Keep bpf_refcount_acquire() nullable for borrowed RCU kptrs and
reject untrusted allocated-object pointers (Ning Ding)
- Fix special fields handling in recycled rhtab elements (Nuoqi Gui,
Yuan Chen)"
* tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf: (86 commits)
bpf, riscv: Make arena support depend on ZACAS
selftests/bpf: Test pointer bpf_loop iteration count rejection
bpf: Reject non-scalar bpf_loop iteration counts
bpf: use mark_arg_precision() in check_mem_size_reg()
bpf: propagate mark_chain_precision() errors out of loop_flag_is_zero()
selftests/bpf: precision of a NULL global subprogram BTF_ID argument
bpf: mark a NULL BTF_ID argument of a global subprogram precise
selftests/bpf: precision of a NULL kfunc argument
bpf: mark a NULL kfunc argument precise
selftests/bpf: precision of a NULL global subprogram memory argument
bpf: mark a NULL memory argument of a call precise
selftests/bpf: precision of a NULL helper argument
bpf: mark a NULL call argument precise
selftests/bpf: Test inner map identities in callbacks
bpf: Preserve inner map identity in callback frames
selftests/bpf: Test imprecise scalar kptr stores
bpf: Mark NULL kptr stores precise
selftests/bpf: Test rhtab kptr cancellation semantics
bpf: Cancel special fields when recycling rhtab elements
selftests/bpf: Test timer field on recycled rhtab element
...
Add a verifier test that leaves the raw tracepoint context pointer in R1
when calling bpf_loop(). This is the smallest trigger for the incorrect
precision backtracking: it reuses an existing callback and needs no maps or
userspace setup.
Expect an ordinary scalar-type rejection. Without the verifier fix, the
test instead reaches precision backtracking and reports an internal
"backtracking misuse" error.
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://patch.msgid.link/20260905014735.1452988-3-memxor@gmail.com
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Commit "net/sched: ets: clamp quantum in parse and fallback paths"
moved the quantum floor into ets_quantum_parse(), so every explicitly
configured quantum is now clamped to [256, 1 << 20], not just the
psched_mtu() fallback.
Test 41f5 passes "quanta 4294967294 1 1" and matches the values back
verbatim, so all three bands now differ from what it expects:
before: bands 3 quanta 4294967294 1 1
after: bands 3 quanta 1048576 256 256
Update the match pattern accordingly.
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Link: https://patch.msgid.link/QDISC-0CFC.v3.20260901204856@mojatatu.com.10
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Check that mark_chain_precision() is called for a NULL pointer passed
as a nullable pointer argument of a global subprogram.
(Pointer arguments of the global subprograms are nullable by default).
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-4-0f5a360ff15d@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
check_func_arg() allows bpf_register_is_null() for nullable arguments
w/o marking the underlying scalar register precise. Hence a checkpoint
created on such a path would prune against arbitrary scalar value.
check_helper_call() enforces second parameter of the
bpf_get_local_storage() to be zero, w/o marking the underlying scalar
register precise. Hence a checkpoint created on such a path would
prune against arbitrary scalar value.
Grouping these two into one patch, as they share the same fixes tag.
Fixes: b5dc0163d8 ("bpf: precise scalar_value tracking")
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-1-0f5a360ff15d@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Add nine test cases for the S16_MAX tx_queue_len cap to the
pfifo_fast suite. Netlink cases exercise the ifla_policy bound
(2/3); the two new sysfs cases exercise the netif_change_tx_queue_len()
choke point that 1/3 owns (SIOCSIFTXQLEN shares it; the ioctl is not
portably reachable from tdc):
- dbe3: set txqueuelen 32767 (S16_MAX) - accepted, pins the exact
boundary value.
- b50e: set txqueuelen 32768 - rejected with -ERANGE.
- 40f8: write 32768 to /sys/class/net/*/tx_queue_len - rejected
(covers patch 1/3 directly; netlink cannot reach this path).
- 4b6e: write 32767 via sysfs - accepted, boundary positive control
for the patch-1 path.
- b90d: create a dummy with txqueuelen 32767 - accepted.
- 57ab: create a dummy with txqueuelen 32768 - rejected at netlink
parse time.
- e777: create a dummy with txqueuelen 500000 - rejected (the v1
bypass path flagged by review).
- 31ac: create a veth with an oversized txqueuelen on the peer nest -
rejected (the peer nest is parsed against ifla_policy too).
- b567: create a veth with txqueuelen on both ends within the cap -
accepted (positive control for the peer nest).
The three negative-creation verifies assert device absence
("ip -o link show" must not contain the device), not merely absence
of a qlen pattern - the device does not exist when creation fails, so
the exit code carries the signal and the verify adds content.
The v1 04b5 "resize rollback" case is dropped: with the cap checked
first, netif_change_tx_queue_len() returns -ERANGE before the write,
the notifier or any qdisc resize, so the case exercised no resize and
no rollback. It was also nondeterministic: pre-patch, the resize
issues three ~11 MB kvmallocs for qlen 500000 which normally succeed,
so the case passed on an unfixed kernel only under memory pressure -
its outcome depended on the test host's free memory.
Test commands run inside the netns, but nsPlugin creates the veth
peer in the root namespace, so the teardown deletes the in-ns end
only; deleting the peer via the pair is implicit.
Note: iproute2 treats "txqueuelen" appearing after "type X" as a
link-type attribute and silently drops it, so the creation cases
place it before "type" to actually reach the kernel.
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Link: https://patch.msgid.link/QDISC-2899.v2.20260901233641@mojatatu.com.3
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The commit cited in the Fixes tag allowed VXLAN FDB entries to point to
FDB nexthops so that overlay traffic could be load balanced across
multiple VTEPs. Such entries can only be configured from user space,
cannot be learned and cannot roam. They only make sense with a user space
control plane such as E-VPN where data plane learning is disabled.
Despite that, the VXLAN driver does not currently prevent such entries
from being configured with the "dynamic" flag. The per-nexthop FDB list
is only protected by the per-device hash lock, which is not sufficient
when two VXLAN devices point to the same FDB nexthop and therefore share
the list. Aging runs in softirq context without RTNL, so an entry deleted
by one device can race with an addition or deletion from the other,
leading to list corruption:
list_del corruption. next->prev should be ffff8881069d9548, but was
dead000000000122. (next=ffff8881069d9448)
WARNING: CPU: 0 PID: 90 at lib/list_debug.c:65
__list_del_entry_valid_or_report+0x1aa/0x210
...
vxlan_fdb_destroy+0x5b8/0xad0
vxlan_cleanup+0x328/0x450
call_timer_fn+0x2a/0x1c0
run_timer_softirq+0x18c/0x210
BUG: KASAN: slab-use-after-free in vxlan_fdb_destroy
Fix this by rejecting the bogus configuration of dynamic FDB entries that
point to FDB nexthops, both when created and when an existing entry is
updated. As such, the per-nexthop FDB list is only ever mutated under the
RTNL lock. Add test cases to make sure that this does not regress in the
future.
Fixes: 1274e1cc42 ("vxlan: ecmp support for mac fdb entries")
Suggested-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Seungwon Bae <qotmddnjs@ajou.ac.kr>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20260902155956.296699-1-qotmddnjs@ajou.ac.kr
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
core:
- Fix drm_crtc_commit leak when PAGE_FLIP_EVENT is used,
dma-buf:
- Publish the dma-buf only after copy_to_user succeeds
- fix some kernel-doc warnings
atomic-state-helpers:
- set pixel_blend_mode to prop default on reset
sysfb:
- Fix integer overflow
- fix constant comparison bug
pagemap:
- Prevent double migration of device pages
- Reset migration page count on eviction retry
- dma-unmap pages before handling migration errors
- use after free fixes
prime:
- fix prime exports tracing
amdgpu:
- Fix for drm_amdgpu_info_device with mixed 64 bit kernel and 32 bit userspace
- plane blend mode fixes
- SR-IOV fix
- GFX8 fix
- MES queue reset fix
- GPUVM fixes
- DCN 6 warning fix
- DCN 3.5/3.6 fix
- DML fix
- Backlight fix
- Colorop fix
- DC get_estimated_bw() fix
- devcoredump fix
- Userq fixes
- APU PSP fix
- Cursor fix
amdkfd:
- MES queue eviction fix
- MQD debugfs fix
xe:
- oa uapi error handling fix
- drm info message to report FLAT_CSS base misalignment.
i915:
- Drop an accidentally duplicated panel fitter call in DP MST
- Fix DDI clock programming for Cx0 and LT PHY
- Fix PTL CDCLK handling at probe, causing a glitch
- Fix dg2_power_well_count() return type
- Fix a NULL pointer deref at forced probe
- Fix selective fetch disable
amdxdna:
- out-of-bounds access fix
- reject commands chains with no commands
- handle chained mapping BO failures
- refuse to flush an imported BO
ethosu:
- handle mmio mapping failures
- handle storage modes only on hardware that supports it
- fix job completion fence cleanup
fastrpc:
- Publish the dma-buf only after copy_to_user succeeds
gud:
- Improve TV modes and rotation handling
nouveau:
- use-after-free fixes
- add missing scanline position support
- HDMI and DP fixes
- null pointer dereference fix
- dmem accounting fixes for large folios
- use write-combined maps for coherent
qaic:
- out-of-bounds access fix
tegra:
- Add blend mode properties
virtio:
- exit path and error handling fixes
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Merge tag 'drm-fixes-2026-09-05' of https://gitlab.freedesktop.org/drm/kernel
Pull drm fixes from Dave Airlie:
"Lots of scattered fixes: nouveau has a bunch of display fixes for
blackwell GPUs that should mean we light up monitors properly and fix
some desktop rendering problems, amdgpu and intel display changes as
usual.
There also changes to the core pagemap, then the usual amouny of AI
inspired validation fixes.
core:
- Fix drm_crtc_commit leak when PAGE_FLIP_EVENT is used
dma-buf:
- Publish the dma-buf only after copy_to_user succeeds
- fix some kernel-doc warnings
atomic-state-helpers:
- set pixel_blend_mode to prop default on reset
sysfb:
- Fix integer overflow
- fix constant comparison bug
pagemap:
- Prevent double migration of device pages
- Reset migration page count on eviction retry
- dma-unmap pages before handling migration errors
- use after free fixes
prime:
- fix prime exports tracing
amdgpu:
- Fix for drm_amdgpu_info_device with mixed 64 bit kernel and 32 bit
userspace
- plane blend mode fixes
- SR-IOV fix
- GFX8 fix
- MES queue reset fix
- GPUVM fixes
- DCN 6 warning fix
- DCN 3.5/3.6 fix
- DML fix
- Backlight fix
- Colorop fix
- DC get_estimated_bw() fix
- devcoredump fix
- Userq fixes
- APU PSP fix
- Cursor fix
amdkfd:
- MES queue eviction fix
- MQD debugfs fix
xe:
- oa uapi error handling fix
- drm info message to report FLAT_CSS base misalignment
i915:
- Drop an accidentally duplicated panel fitter call in DP MST
- Fix DDI clock programming for Cx0 and LT PHY
- Fix PTL CDCLK handling at probe, causing a glitch
- Fix dg2_power_well_count() return type
- Fix a NULL pointer deref at forced probe
- Fix selective fetch disable
amdxdna:
- out-of-bounds access fix
- reject commands chains with no commands
- handle chained mapping BO failures
- refuse to flush an imported BO
ethosu:
- handle mmio mapping failures
- handle storage modes only on hardware that supports it
- fix job completion fence cleanup
fastrpc:
- Publish the dma-buf only after copy_to_user succeeds
gud:
- Improve TV modes and rotation handling
nouveau:
- use-after-free fixes
- add missing scanline position support
- HDMI and DP fixes
- null pointer dereference fix
- dmem accounting fixes for large folios
- use write-combined maps for coherent
qaic:
- out-of-bounds access fix
tegra:
- Add blend mode properties
virtio:
- exit path and error handling fixes
* tag 'drm-fixes-2026-09-05' of https://gitlab.freedesktop.org/drm/kernel: (83 commits)
drm/xe/vram: report FLAT_CCS base misalignment
MAINTAINERS, mailmap: use Aditya Garg's linux.dev account
drm/amd/display: use plane color_mgmt_changed to track colorop changes
drm/amdgpu/userq: fix struct drm_amdgpu_info_device padding for 32bit compile
drm/amd/display: Fix cursor disable with horizontally split planes
drm/amdgpu/userq: dont overwrite the error of subsequent map call
drm/amdgpu: Skip accessing psp rum time db for APUs
drm/amdgpu: update the fw version for gfx12 userqueues
drm/amdgpu: update the fw version for gfx11 userqueues
drm/amdgpu: fix byte/dword unit mismatch in coredump IB dump
drm/amdkfd: fix scope of mqd_mgr dereference in pqm_debugfs_mqds
drm/amd/display: fix division by zero in get_estimated_bw()
drm/amd/display: use halving distribution for all encode-to-linear curves
drm/amd/display: Fix backlight control for luminance-capable OLED
drm/amd/display: Remove const Qualifier From Non-Pointer Fields
drm/amd/display: Set gpuvm min page size to 4K on dcn35/36
drm/amd/display: Fix DCN5/6 DML2 compilation warnings
drm/amdgpu: fix Idle BOs list in VM debugfs status info
drm/amdgpu: use AMDGPU_GPU_PAGE_SHIFT instead of PAGE_SHIFT
drm/amdgpu: Update queue reset support version
...
Add load-only timer_mim coverage for inner map identities propagated
through nested timer and bpf_for_each_map_elem() callbacks.
The negative case initializes a timer in the second inner map with the map
saved from the first inner map timer callback. The positive case pairs the
timer value with the map supplied to the same for-each callback.
Without the verifier fix, the mismatched-map program is accepted while the
same-map control is rejected. Preserving map_uid reverses both verdicts.
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260904104203.345917-9-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Add a verifier regression where an imprecise zero scalar reaches a kptr
store first and a nonzero scalar reaches the same instruction on a second
path.
Without the corresponding verifier fix, the second path is pruned and the
program is unexpectedly accepted. With the fix, the scalar range is
compared and the invalid store is rejected.
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260904104203.345917-7-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Resizable hash-map updates and deletions must not perform full special-field
destruction in their caller context. In particular, a referenced kptr must
remain attached to the allocation until the memory allocator destructor can
release it safely.
Add separate coverage for both affected paths. The update test stores a task
kptr, replaces the ordinary value bytes with BPF_EXIST, and verifies that the
kptr survived. The delete test removes an element and exchanges its kptr
through the still-valid map-value pointer before the allocation is reclaimed.
Both cases observe a NULL kptr when rhtab uses bpf_obj_free_fields(). They
recover and release the reference after rhtab switches to cancellation
semantics.
Signed-off-by: Nuoqi Gui <gnq25@mails.tsinghua.edu.cn>
[ kkd: Split update and delete coverage and rewrote the commit log ]
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260904104203.345917-5-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Exercise the rhtab special-field lifecycle with the sequence from the
original report. A bpf_for_each_map_elem() callback deletes the sole
element, then initializes and arms a timer through the callback value
pointer while it remains valid.
Use a one-element map and pin userspace and BPF execution to one CPU.
Repeated delete-and-replace cycles drain the per-CPU allocator cache, and
periodic RCU synchronization makes the deleted units available for
recycling.
After each replacement, a second BPF program calls bpf_timer_cancel()
on its value. A successful cancellation proves both that a timer-bearing
unit was recycled and that insertion preserved the timer field. Without
the fix, insertion clears that field and cancellation keeps returning
-EINVAL. A long expiration keeps the timer callback out of the test, so
the regression is detected without accessing freed memory.
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260904104203.345917-3-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
The bpf_nf test allocs a ct, sets snat and dnat with random addr and
port via bpf_ct_set_nat_info(), then looks the ct up and checks the
reply tuple against what was set.
The port comes from bpf_get_prandom_u32() and can be 0. For
bpf_ct_set_nat_info(), port 0 means "port not specified", so only the
addr is mapped and the kernel keeps the original port. The check then
compares that port with 0 and fails, which shows up as a flaky
"Test for source natting" failure in CI [1][2].
Keep the random port in 1..65535 so it is always specified.
[1] https://github.com/kernel-patches/bpf/actions/runs/33830002889/job/100893868791
[2] https://github.com/kernel-patches/bpf/actions/runs/33829976794/job/100893220999
Fixes: b06b45e82b ("selftests/bpf: add tests for bpf_ct_set_nat_info kfunc")
Signed-off-by: Jiayuan Chen <jiayuan.chen@linux.dev>
Link: https://lore.kernel.org/r/20260904073745.363314-1-jiayuan.chen@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
