-----BEGIN PGP SIGNATURE-----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=oR6j
-----END PGP SIGNATURE-----
Merge tag 'drm-fixes-2018-10-19' of git://anongit.freedesktop.org/drm/drm
Dave writes:
"drm fixes for 4.19 final
Just a last set of misc core fixes for final.
4 fixes, one use after free, one fb integration fix, one EDID fix,
and one laptop panel quirk,"
* tag 'drm-fixes-2018-10-19' of git://anongit.freedesktop.org/drm/drm:
drm/edid: VSDB yCBCr420 Deep Color mode bit definitions
drm: fix use of freed memory in drm_mode_setcrtc
drm: fb-helper: Reject all pixel format changing requests
drm/edid: Add 6 bpc quirk for BOE panel in HP Pavilion 15-n233sl
Ok, so last week I thought we had sent our final pull request for 4.19.
Well, wouldn't ya know someone went and found a couple Spectre v1 fixes
were needed :-/. So, a couple *very* small specter patches for this
(hopefully) final -rc week.
Signed-off-by: Doug Ledford <dledford@redhat.com>
-----BEGIN PGP SIGNATURE-----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=ZHZX
-----END PGP SIGNATURE-----
Merge tag 'for-gkh' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Doug writes:
"Really final for-rc pull request for 4.19
Ok, so last week I thought we had sent our final pull request for
4.19. Well, wouldn't ya know someone went and found a couple Spectre
v1 fixes were needed :-/. So, a couple *very* small specter patches
for this (hopefully) final -rc week."
* tag 'for-gkh' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
RDMA/ucma: Fix Spectre v1 vulnerability
IB/ucm: Fix Spectre v1 vulnerability
- Fix use of freed memory in drm_mode_setcrtc.
- Reject pixel format changing requests in fb helper.
- Add 6 bpc quirk for HP Pavilion 15-n233sl
- Fix VSDB yCBCr420 Deep Color mode bit definitions
-----BEGIN PGP SIGNATURE-----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=73wn
-----END PGP SIGNATURE-----
Merge tag 'drm-misc-fixes-2018-10-18' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
drm-misc-fixes for v4.19:
- Fix use of freed memory in drm_mode_setcrtc.
- Reject pixel format changing requests in fb helper.
- Add 6 bpc quirk for HP Pavilion 15-n233sl
- Fix VSDB yCBCr420 Deep Color mode bit definitions
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/647fe5d0-4ec5-57cc-9f23-a4836b29e278@linux.intel.com
fscache_set_key() can incur an out-of-bounds read, reported by KASAN:
BUG: KASAN: slab-out-of-bounds in fscache_alloc_cookie+0x5b3/0x680 [fscache]
Read of size 4 at addr ffff88084ff056d4 by task mount.nfs/32615
and also reported by syzbot at https://lkml.org/lkml/2018/7/8/236
BUG: KASAN: slab-out-of-bounds in fscache_set_key fs/fscache/cookie.c:120 [inline]
BUG: KASAN: slab-out-of-bounds in fscache_alloc_cookie+0x7a9/0x880 fs/fscache/cookie.c:171
Read of size 4 at addr ffff8801d3cc8bb4 by task syz-executor907/4466
This happens for any index_key_len which is not divisible by 4 and is
larger than the size of the inline key, because the code allocates exactly
index_key_len for the key buffer, but the hashing loop is stepping through
it 4 bytes (u32) at a time in the buf[] array.
Fix this by calculating how many u32 buffers we'll need by using
DIV_ROUND_UP, and then using kcalloc() to allocate a precleared allocation
buffer to hold the index_key, then using that same count as the hashing
index limit.
Fixes: ec0328e46d ("fscache: Maintain a catalogue of allocated cookies")
Reported-by: syzbot+a95b989b2dde8e806af8@syzkaller.appspotmail.com
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The inline key in struct rxrpc_cookie is insufficiently initialized,
zeroing only 3 of the 4 slots, therefore an index_key_len between 13 and 15
bytes will end up hashing uninitialized memory because the memcpy only
partially fills the last buf[] element.
Fix this by clearing fscache_cookie objects on allocation rather than using
the slab constructor to initialise them. We're going to pretty much fill
in the entire struct anyway, so bringing it into our dcache writably
shouldn't incur much overhead.
This removes the need to do clearance in fscache_set_key() (where we aren't
doing it correctly anyway).
Also, we don't need to set cookie->key_len in fscache_set_key() as we
already did it in the only caller, so remove that.
Fixes: ec0328e46d ("fscache: Maintain a catalogue of allocated cookies")
Reported-by: syzbot+a95b989b2dde8e806af8@syzkaller.appspotmail.com
Reported-by: Eric Sandeen <sandeen@redhat.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
the victim might've been rmdir'ed just before the lock_rename();
unlike the normal callers, we do not look the source up after the
parents are locked - we know it beforehand and just recheck that it's
still the child of what used to be its parent. Unfortunately,
the check is too weak - we don't spot a dead directory since its
->d_parent is unchanged, dentry is positive, etc. So we sail all
the way to ->rename(), with hosting filesystems _not_ expecting
to be asked renaming an rmdir'ed subdirectory.
The fix is easy, fortunately - the lock on parent is sufficient for
making IS_DEADDIR() on child safe.
Cc: stable@vger.kernel.org
Fixes: 9ae326a690 (CacheFiles: A cache that backs onto a mounted filesystem)
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jann Horn points out that our TLB flushing was subtly wrong for the
mremap() case. What makes mremap() special is that we don't follow the
usual "add page to list of pages to be freed, then flush tlb, and then
free pages". No, mremap() obviously just _moves_ the page from one page
table location to another.
That matters, because mremap() thus doesn't directly control the
lifetime of the moved page with a freelist: instead, the lifetime of the
page is controlled by the page table locking, that serializes access to
the entry.
As a result, we need to flush the TLB not just before releasing the lock
for the source location (to avoid any concurrent accesses to the entry),
but also before we release the destination page table lock (to avoid the
TLB being flushed after somebody else has already done something to that
page).
This also makes the whole "need_flush" logic unnecessary, since we now
always end up flushing the TLB for every valid entry.
Reported-and-tested-by: Jann Horn <jannh@google.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Tested-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Using non-GPL licenses for our documentation is rather problematic,
as it can directly include other files, which generally are GPLv2
licensed and thus not compatible.
Remove this license now that the only user (idr.rst) is gone to avoid
people semi-accidentally using it again.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Matthew writes:
"IDA/IDR fixes for 4.19
I have two tiny fixes, one for the IDA test-suite and one for the IDR
documentation license."
* 'ida-fixes-4.19-rc8' of git://git.infradead.org/users/willy/linux-dax:
idr: Change documentation license
test_ida: Fix lockdep warning
- Fix size mismatch of tracepoint array
- Have preemptirq test module use same clock source of the selftest
-----BEGIN PGP SIGNATURE-----
iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCW8eRhRQccm9zdGVkdEBn
b29kbWlzLm9yZwAKCRAp5XQQmuv6qkEgAP4vscLVMSYBTUuDNXX0+l8FVdrpPagL
1tjTJpTUfG3QLQEA9XOl8vR/Yy/BywcU7K2R3zGbo7Qh6AgpWl2pJcmsGQk=
=XS5E
-----END PGP SIGNATURE-----
Merge tag 'trace-v4.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Steven writes:
"tracing: Two fixes for 4.19
This fixes two bugs:
- Fix size mismatch of tracepoint array
- Have preemptirq test module use same clock source of the selftest"
* tag 'trace-v4.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Use trace_clock_local() for looping in preemptirq_delay_test.c
tracepoint: Fix tracepoint array element size mismatch
The preemptirq_delay_test module is used for the ftrace selftest code that
tests the latency tracers. The problem is that it uses ktime for the delay
loop, and then checks the tracer to see if the delay loop is caught, but the
tracer uses trace_clock_local() which uses various different other clocks to
measure the latency. As ktime uses the clock cycles, and the code then
converts that to nanoseconds, it causes rounding errors, and the preemptirq
latency tests are failing due to being off by 1 (it expects to see a delay
of 500000 us, but the delay is only 499999 us). This is happening due to a
rounding error in the ktime (which is totally legit). The purpose of the
test is to see if it can catch the delay, not to test the accuracy between
trace_clock_local() and ktime_get(). Best to use apples to apples, and have
the delay loop use the same clock as the latency tracer does.
Cc: stable@vger.kernel.org
Fixes: f96e8577da ("lib: Add module for testing preemptoff/irqsoff latency tracers")
Acked-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
commit 46e0c9be20 ("kernel: tracepoints: add support for relative
references") changes the layout of the __tracepoint_ptrs section on
architectures supporting relative references. However, it does so
without turning struct tracepoint * const into const int elsewhere in
the tracepoint code, which has the following side-effect:
Setting mod->num_tracepoints is done in by module.c:
mod->tracepoints_ptrs = section_objs(info, "__tracepoints_ptrs",
sizeof(*mod->tracepoints_ptrs),
&mod->num_tracepoints);
Basically, since sizeof(*mod->tracepoints_ptrs) is a pointer size
(rather than sizeof(int)), num_tracepoints is erroneously set to half the
size it should be on 64-bit arch. So a module with an odd number of
tracepoints misses the last tracepoint due to effect of integer
division.
So in the module going notifier:
for_each_tracepoint_range(mod->tracepoints_ptrs,
mod->tracepoints_ptrs + mod->num_tracepoints,
tp_module_going_check_quiescent, NULL);
the expression (mod->tracepoints_ptrs + mod->num_tracepoints) actually
evaluates to something within the bounds of the array, but miss the
last tracepoint if the number of tracepoints is odd on 64-bit arch.
Fix this by introducing a new typedef: tracepoint_ptr_t, which
is either "const int" on architectures that have PREL32 relocations,
or "struct tracepoint * const" on architectures that does not have
this feature.
Also provide a new tracepoint_ptr_defer() static inline to
encapsulate deferencing this type rather than duplicate code and
ugly idefs within the for_each_tracepoint_range() implementation.
This issue appears in 4.19-rc kernels, and should ideally be fixed
before the end of the rc cycle.
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Jessica Yu <jeyu@kernel.org>
Link: http://lkml.kernel.org/r/20181013191050.22389-1-mathieu.desnoyers@efficios.com
Link: http://lkml.kernel.org/r/20180704083651.24360-7-ard.biesheuvel@linaro.org
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morris <james.morris@microsoft.com>
Cc: James Morris <jmorris@namei.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Nicolas Pitre <nico@linaro.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: "Serge E. Hallyn" <serge@hallyn.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Thomas Garnier <thgarnie@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Helge writes:
"parisc fix:
Fix an unitialized variable usage in the parisc unwind code."
* 'parisc-4.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Fix uninitialized variable usage in unwind.c
and generating noise.
-----BEGIN PGP SIGNATURE-----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=Vt/u
-----END PGP SIGNATURE-----
Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Stephen writes:
"clk fixes for v4.19-rc8
One fix for the Allwinner A10 SoC's audio PLL that wasn't properly
set and generating noise."
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: sunxi-ng: sun4i: Set VCO and PLL bias current to lowest setting
David writes:
"Sparc fixes
1) Revert the %pOF change, it causes regressions.
2) Wire up io_pgetevents().
3) Fix perf events on single-PCR sparc64 cpus.
4) Do proper perf event throttling like arm and x86."
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
Revert "sparc: Convert to using %pOFn instead of device_node.name"
sparc64: Set %l4 properly on trap return after handling signals.
sparc64: Make proc_id signed.
sparc: Throttle perf events properly.
sparc: Fix single-pcr perf event counter management.
sparc: Wire up io_pgetevents system call.
sunvdc: Remove VLA usage
-----BEGIN PGP SIGNATURE-----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=fQ6g
-----END PGP SIGNATURE-----
Merge tag 'selinux-pr-20181015' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Paul writes:
"SELinux fixes for v4.19
We've got one SELinux "fix" that I'd like to get into v4.19 if
possible. I'm using double quotes on "fix" as this is just an update
to the MAINTAINERS file and not a code change. From my perspective,
MAINTAINERS updates generally don't warrant inclusion during the -rcX
phase, but this is a change to the mailing list location so it seemed
prudent to get this in before v4.19 is released"
* tag 'selinux-pr-20181015' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
MAINTAINERS: update the SELinux mailing list location
hdr.cmd can be indirectly controlled by user-space, hence leading to
a potential exploitation of the Spectre variant 1 vulnerability.
This issue was detected with the help of Smatch:
drivers/infiniband/core/ucma.c:1686 ucma_write() warn: potential
spectre issue 'ucma_cmd_table' [r] (local cap)
Fix this by sanitizing hdr.cmd before using it to index
ucm_cmd_table.
Notice that given that speculation windows are large, the policy is
to kill the speculation on the first load and not worry if it can be
completed with a dependent load/store [1].
[1] https://marc.info/?l=linux-kernel&m=152449131114778&w=2
Cc: stable@vger.kernel.org
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
hdr.cmd can be indirectly controlled by user-space, hence leading to
a potential exploitation of the Spectre variant 1 vulnerability.
This issue was detected with the help of Smatch:
drivers/infiniband/core/ucm.c:1127 ib_ucm_write() warn: potential
spectre issue 'ucm_cmd_table' [r] (local cap)
Fix this by sanitizing hdr.cmd before using it to index
ucm_cmd_table.
Notice that given that speculation windows are large, the policy is
to kill the speculation on the first load and not worry if it can be
completed with a dependent load/store [1].
[1] https://marc.info/?l=linux-kernel&m=152449131114778&w=2
Cc: stable@vger.kernel.org
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
As noticed by Dave Anglin, the last commit introduced a small bug where
the potentially uninitialized r struct is used instead of the regs
pointer as input for unwind_frame_init(). Fix it.
Signed-off-by: Helge Deller <deller@gmx.de>
Reported-by: John David Anglin <dave.anglin@bell.net>
This reverts commit 0b9871a3a8.
Causes crashes with qemu, interacts badly with commit commit
6d0a70a284 ("vsprintf: print OF node name using full_name")
etc.
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This documentation was inadvertently released under the CC-BY-SA-4.0
license. It was intended to be released under GPL-2.0 or later.
Signed-off-by: Matthew Wilcox <willy@infradead.org>
The IDA was declared on the stack instead of statically, so lockdep
triggered a warning that it was improperly initialised.
Reported-by: 0day bot
Tested-by: Rong Chen <rong.a.chen@intel.com>
Signed-off-by: Matthew Wilcox <willy@infradead.org>
The recent patch to fix the afs_server struct leak didn't actually fix the
bug, but rather fixed some of the symptoms. The problem is that an
asynchronous call that holds a resource pointed to by call->reply[0] will
find the pointer cleared in the call destructor, thereby preventing the
resource from being cleaned up.
In the case of the server record leak, the afs_fs_get_capabilities()
function in devel code sets up a call with reply[0] pointing at the server
record that should be altered when the result is obtained, but this was
being cleared before the destructor was called, so the put in the
destructor does nothing and the record is leaked.
Commit f014ffb025 removed the additional ref obtained by
afs_install_server(), but the removal of this ref is actually used by the
garbage collector to mark a server record as being defunct after the record
has expired through lack of use.
The offending clearance of call->reply[0] upon completion in
afs_process_async_call() has been there from the origin of the code, but
none of the asynchronous calls actually use that pointer currently, so it
should be safe to remove (note that synchronous calls don't involve this
function).
Fix this by the following means:
(1) Revert commit f014ffb025.
(2) Remove the clearance of reply[0] from afs_process_async_call().
Without this, afs_manage_servers() will suffer an assertion failure if it
sees a server record that didn't get used because the usage count is not 1.
Fixes: f014ffb025 ("afs: Fix afs_server struct leak")
Fixes: 08e0e7c82e ("[AF_RXRPC]: Make the in-kernel AFS filesystem use AF_RXRPC.")
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If we did some signal processing, we have to reload the pt_regs
tstate register because it's value may have changed.
In doing so we also have to extract the %pil value contained in there
anre load that into %l4.
This value is at bit 20 and thus needs to be shifted down before we
later write it into the %pil register.
Most of the time this is harmless as we are returning to userspace
and the %pil is zero for that case.
Signed-off-by: David S. Miller <davem@davemloft.net>
* Fix a livelock in dax_layout_busy_page() present since v4.18. The
lockup triggers when truncating an actively mapped huge page out of a
mapping pinned for direct-I/O.
* Fix mprotect() clobbers of _PAGE_DEVMAP. Broken since v4.5 mprotect()
clears this flag that is needed to communicate the liveness of device
pages to the get_user_pages() path.
-----BEGIN PGP SIGNATURE-----
iQIcBAABAgAGBQJbwiZhAAoJEB7SkWpmfYgCYFoQAL8ED6c1bfGUPRsWSrTRChU0
ungVZ/Vf1+2ERd3ivUXPQzahNtqH5EWvEVp0aboVpyJUoVllrztInVS2hxaGJE+e
w7WnzaXh36MY0kvLpK+Ny1Cxk7qg2rXnmzOAPRVdSUoSvh0TXOn5HFX1i/OdI7WK
wgJwXraCoyKP9aTItw7oHQy9S36bi1RJVUakOAoEpEx4Vn+fwFxLNIt34G5CRJ+k
iflicM7CPngxlFzwfoiX9v3DhV7toexk1A4LAzzwypG0Aiqd5tW2FG1lwLMPncNk
8FezBm9VjkMwzv6hj7nD9UfU2lbh3GqqGDW0cPX1DPSgDxr/4pOLtKcbYWHh6yas
NtCXk37q90ey3GtD2wYBRkBNly6UWvHJ0d3srtO6ZSl1VN6JQu8rhVhQ6KnON24B
NcWlEVf2brqf0uaW4byCVbdVfIDp96/qgEvCo1pq3olXwCdDyOBJjYxaBcnu5JDV
YsItMCJ49AxS/qoCt3vam7vC5TGhfYHL5xJPaF06cdjYvgfqOIV3VQT1ujBx4cvh
MBFRBKDc6oDiJFgkrdYqHwJfn5fCQVS180Oy5S0AFGsVAzsJalKBZBLx2f2RQn8c
r+kczvvPjpczEeEqzaqsxTgjowo/75Q8PRXc2PbwQzNxfkHuKf+xxQpnUg0mN6Hf
w8zPSaCcCs2Wo21Kd/ua
=VXnU
-----END PGP SIGNATURE-----
Merge tag 'libnvdimm-fixes-4.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Dan writes:
"libnvdimm/dax 4.19-rc8
* Fix a livelock in dax_layout_busy_page() present since v4.18. The
lockup triggers when truncating an actively mapped huge page out of
a mapping pinned for direct-I/O.
* Fix mprotect() clobbers of _PAGE_DEVMAP. Broken since v4.5
mprotect() clears this flag that is needed to communicate the
liveness of device pages to the get_user_pages() path."
* tag 'libnvdimm-fixes-4.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
mm: Preserve _PAGE_DEVMAP across mprotect() calls
filesystem-dax: Fix dax_layout_busy_page() livelock
Wolfram writes:
"i2c fix for 4.19:
I2C has one documentation bugfix for something we changed during the
v4.19 cycle"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: Fix kerneldoc for renamed i2c dma put function
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.22 (GNU/Linux)
iQEcBAABAgAGBQJbwb17AAoJEL/70l94x66D7SwH+wbyl7DK6vH37m+seZDVWCjd
sLs2ZVf7jqhU4nMwq7SJkUL1N1SGzqj5M2XLcWye6m0tWziTktreAsx9PgdtIuOS
42RmO7G3Tt8JbTu6+Ykysjp5JDaNN4RAjynMsn+G53vBw/QHFSW5xsPE2H/67qi7
83n4IlgFcwgP0mwg5K700J2GH2NWzPU9c0nWHK3HDZORoiF88w7+1bjrDMgfyZMi
K5ZCLshE1Fg5fqHlpQjETqIV1bmd0p5BnUend+8yEUqrb/z16IoNALQMBtW7xFCX
oA6dkAn0pCSyS6kqX+Ut9glrKcN2cmXHvcnT7qIUYvw6Yk3egHH1Gn4uB3cKTGk=
=x9gh
-----END PGP SIGNATURE-----
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Paolo writes:
"KVM fixes for 4.19-rc8
Leftover bugfixes."
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: vmx: hyper-v: don't pass EPT configuration info to vmx_hv_remote_flush_tlb()
KVM: x86: support CONFIG_KVM_AMD=y with CONFIG_CRYPTO_DEV_CCP_DD=m
ARM: KVM: Correctly order SGI register entries in the cp15 array
I'm observing random crashes in multi-vCPU L2 guests running on KVM on
Hyper-V. I bisected the issue to the commit 877ad952be ("KVM: vmx: Add
tlb_remote_flush callback support"). Hyper-V TLFS states:
"AddressSpace specifies an address space ID (an EPT PML4 table pointer)"
So apparently, Hyper-V doesn't expect us to pass naked EPTP, only PML4
pointer should be used. Strip off EPT configuration information before
calling into vmx_hv_remote_flush_tlb().
Fixes: 877ad952be ("KVM: vmx: Add tlb_remote_flush callback support")
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
ubifs_assert() is not WARN_ON(), so we have to invert
the checks.
Randy faced this warning with UBIFS being a module, since
most users use UBIFS as builtin because UBIFS is the rootfs
nobody noticed so far. :-(
Including me.
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Fixes: 54169ddd38 ("ubifs: Turn two ubifs_assert() into a WARN_ON()")
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
On non-preempt kernels this loop can take a long time (more than 50 ticks)
processing through entries.
Link: http://lkml.kernel.org/r/20181010172623.57033-1-khazhy@google.com
Signed-off-by: Khazhismel Kumykov <khazhy@google.com>
Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Inside set_pmd_migration_entry() we are holding page table locks and thus
we can not sleep so we can not call invalidate_range_start/end()
So remove call to mmu_notifier_invalidate_range_start/end() because they
are call inside the function calling set_pmd_migration_entry() (see
try_to_unmap_one()).
Link: http://lkml.kernel.org/r/20181012181056.7864-1-jglisse@redhat.com
Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
Reported-by: Andrea Arcangeli <aarcange@redhat.com>
Reviewed-by: Zi Yan <zi.yan@cs.rutgers.edu>
Acked-by: Michal Hocko <mhocko@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: David Nellans <dnellans@nvidia.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Daniel Micay reports that attempting to use MAP_FIXED_NOREPLACE in an
application causes that application to randomly crash. The existing check
for handling MAP_FIXED_NOREPLACE looks up the first VMA that either
overlaps or follows the requested region, and then bails out if that VMA
overlaps *the start* of the requested region. It does not bail out if the
VMA only overlaps another part of the requested region.
Fix it by checking that the found VMA only starts at or after the end of
the requested region, in which case there is no overlap.
Test case:
user@debian:~$ cat mmap_fixed_simple.c
#include <sys/mman.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#ifndef MAP_FIXED_NOREPLACE
#define MAP_FIXED_NOREPLACE 0x100000
#endif
int main(void) {
char *p;
errno = 0;
p = mmap((void*)0x10001000, 0x4000, PROT_NONE,
MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED_NOREPLACE, -1, 0);
printf("p1=%p err=%m\n", p);
errno = 0;
p = mmap((void*)0x10000000, 0x2000, PROT_READ,
MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED_NOREPLACE, -1, 0);
printf("p2=%p err=%m\n", p);
char cmd[100];
sprintf(cmd, "cat /proc/%d/maps", getpid());
system(cmd);
return 0;
}
user@debian:~$ gcc -o mmap_fixed_simple mmap_fixed_simple.c
user@debian:~$ ./mmap_fixed_simple
p1=0x10001000 err=Success
p2=0x10000000 err=Success
10000000-10002000 r--p 00000000 00:00 0
10002000-10005000 ---p 00000000 00:00 0
564a9a06f000-564a9a070000 r-xp 00000000 fe:01 264004
/home/user/mmap_fixed_simple
564a9a26f000-564a9a270000 r--p 00000000 fe:01 264004
/home/user/mmap_fixed_simple
564a9a270000-564a9a271000 rw-p 00001000 fe:01 264004
/home/user/mmap_fixed_simple
564a9a54a000-564a9a56b000 rw-p 00000000 00:00 0 [heap]
7f8eba447000-7f8eba5dc000 r-xp 00000000 fe:01 405885
/lib/x86_64-linux-gnu/libc-2.24.so
7f8eba5dc000-7f8eba7dc000 ---p 00195000 fe:01 405885
/lib/x86_64-linux-gnu/libc-2.24.so
7f8eba7dc000-7f8eba7e0000 r--p 00195000 fe:01 405885
/lib/x86_64-linux-gnu/libc-2.24.so
7f8eba7e0000-7f8eba7e2000 rw-p 00199000 fe:01 405885
/lib/x86_64-linux-gnu/libc-2.24.so
7f8eba7e2000-7f8eba7e6000 rw-p 00000000 00:00 0
7f8eba7e6000-7f8eba809000 r-xp 00000000 fe:01 405876
/lib/x86_64-linux-gnu/ld-2.24.so
7f8eba9e9000-7f8eba9eb000 rw-p 00000000 00:00 0
7f8ebaa06000-7f8ebaa09000 rw-p 00000000 00:00 0
7f8ebaa09000-7f8ebaa0a000 r--p 00023000 fe:01 405876
/lib/x86_64-linux-gnu/ld-2.24.so
7f8ebaa0a000-7f8ebaa0b000 rw-p 00024000 fe:01 405876
/lib/x86_64-linux-gnu/ld-2.24.so
7f8ebaa0b000-7f8ebaa0c000 rw-p 00000000 00:00 0
7ffcc99fa000-7ffcc9a1b000 rw-p 00000000 00:00 0 [stack]
7ffcc9b44000-7ffcc9b47000 r--p 00000000 00:00 0 [vvar]
7ffcc9b47000-7ffcc9b49000 r-xp 00000000 00:00 0 [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0
[vsyscall]
user@debian:~$ uname -a
Linux debian 4.19.0-rc6+ #181 SMP Wed Oct 3 23:43:42 CEST 2018 x86_64 GNU/Linux
user@debian:~$
As you can see, the first page of the mapping at 0x10001000 was clobbered.
Link: http://lkml.kernel.org/r/20181010152736.99475-1-jannh@google.com
Fixes: a4ff8e8620 ("mm: introduce MAP_FIXED_NOREPLACE")
Signed-off-by: Jann Horn <jannh@google.com>
Reported-by: Daniel Micay <danielmicay@gmail.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: John Hubbard <jhubbard@nvidia.com>
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix the following compile warning:
fs/ocfs2/dlmglue.c:99:30: warning: lockdep_keys defined but not used [-Wunused-variable]
static struct lock_class_key lockdep_keys[OCFS2_NUM_LOCK_TYPES];
Link: http://lkml.kernel.org/r/1536938148-32110-1-git-send-email-zhongjiang@huawei.com
Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----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=UGgm
-----END PGP SIGNATURE-----
Merge tag 'for-linus-20181012' of git://git.kernel.dk/linux-block
Jens writes:
"block fix for 4.19-rc
Just a single fix that should go in, fixing a regression introduced
in the blk-wbt code."
* tag 'for-linus-20181012' of git://git.kernel.dk/linux-block:
blk-wbt: wake up all when we scale up, not down
- Reject CHAIN PMU events when they are not part of a 64-bit counter
- Fix WARN_ON_ONCE() that triggers for reserved regions that don't
correspond to mapped memory
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iQEcBAABCgAGBQJbwLRMAAoJELescNyEwWM0vvYIAIzR2zOm3dIXXP+ZF16jcJJn
tfHtAgzPDvflnnVYc0r1/vAfD7yfF7kpAVZ/xe9hwVfBeXkBxF3oIDSVOdPxRQtW
woZ/Ld6OaN3A2Ev2lBZodJvgBdUUYvXJHAgfFSWfEz9cTTmCF87npRpLj4WEJgXv
CGaC6ffX4eWHGHUE6hdNLNOdTeLDSfvXjBkVSL1uAodE62fvJRv5DzlGNCMO9OyB
7cAt4uD3u57C3b0IObSNeoYrtABbBw+2wpMHcqZ1zrgUOEyZa7bhJtNgKv5b9Krn
LUEW5+clpNG+dsha2gFBekbgaudGYYyW1chYSXDquVmiyemU3oa+Vgc8XeFGcZ8=
=K6MO
-----END PGP SIGNATURE-----
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Will writes:
"More arm64 fixes
- Reject CHAIN PMU events when they are not part of a 64-bit counter
- Fix WARN_ON_ONCE() that triggers for reserved regions that don't
correspond to mapped memory"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: perf: Reject stand-alone CHAIN events for PMUv3
arm64: Fix /proc/iomem for reserved but not memory regions
It is important to clear the hw->state value for non-stopped events
when they are added into the PMU. Otherwise when the event is
scheduled out, we won't read the counter because HES_UPTODATE is still
set. This breaks 'perf stat' and similar use cases, causing all the
events to show zero.
This worked for multi-pcr because we make explicit sparc_pmu_start()
calls in calculate_multiple_pcrs(). calculate_single_pcr() doesn't do
this because the idea there is to accumulate all of the counter
settings into the single pcr value. So we have to add explicit
hw->state handling there.
Like x86, we use the PERF_HES_ARCH bit to track truly stopped events
so that we don't accidently start them on a reload.
Related to all of this, sparc_pmu_start() is missing a userpage update
so add it.
Signed-off-by: David S. Miller <davem@davemloft.net>
Two last minute bugfixes, both for NXP platforms:
* The Layerscape 'qbman' infrastructure suffers from probe ordering
bugs in some configurations, a two-patch series adds a hotfix for
this. 4.20 will have a longer set of patches to rework it.
* The old imx53-qsb board regressed in 4.19 after the addition
of cpufreq support, adding a set of explicit operating points
fixes this.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=WY74
-----END PGP SIGNATURE-----
Merge tag 'armsoc-fixes-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Arnd writes:
"ARM: SoC fixes for 4.19
Two last minute bugfixes, both for NXP platforms:
* The Layerscape 'qbman' infrastructure suffers from probe ordering
bugs in some configurations, a two-patch series adds a hotfix for
this. 4.20 will have a longer set of patches to rework it.
* The old imx53-qsb board regressed in 4.19 after the addition
of cpufreq support, adding a set of explicit operating points
fixes this."
* tag 'armsoc-fixes-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
soc: fsl: qman_portals: defer probe after qman's probe
soc: fsl: qbman: add APIs to retrieve the probing status
ARM: dts: imx53-qsb: disable 1.2GHz OPP
Fix a leak of afs_server structs. The routine that installs them in the
various lookup lists and trees gets a ref on leaving the function, whether
it added the server or a server already exists. It shouldn't increment
the refcount if it added the server.
The effect of this that "rmmod kafs" will hang waiting for the leaked
server to become unused.
Fixes: d2ddc776a4 ("afs: Overhaul volume and server record caching and fileserver rotation")
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Just drop the "linux" part of the path, it was never correct.
Reported-by: Joe Perches <joe@perches.com>
Fixes: 256ac03750 ("dt-bindings: document devicetree bindings for mux-controllers and gpio-mux")
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The file is GPL v2 or later.
Acked-by: Mircea Caprioru <mircea.caprioru@analog.com>
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
It turns out that the fix in commit 6636c3cc56 is bad; the assertion
that the iomap code no longer creates buffer heads is incorrect for
filesystems that set the IOMAP_F_BUFFER_HEAD flag.
Instead, what's happening is that gfs2_iomap_begin_write treats all
files that have the jdata flag set as journaled files, which is
incorrect as long as those files are inline ("stuffed"). We're handling
stuffed files directly via the page cache, which is why we ended up with
pages without buffer heads in gfs2_page_add_databufs.
Fix this by handling stuffed journaled files correctly in
gfs2_iomap_begin_write.
This reverts commit 6636c3cc5690c11631e6366cf9a28fb99c8b25bb.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
It doesn't make sense for a perf event to be configured as a CHAIN event
in isolation, so extend the arm_pmu structure with a ->filter_match()
function to allow the backend PMU implementation to reject CHAIN events
early.
Cc: <stable@vger.kernel.org>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
We describe ranges of 'reserved' memory to userspace via /proc/iomem.
Commit 50d7ba36b9 ("arm64: export memblock_reserve()d regions via
/proc/iomem") updated the logic to export regions that were reserved
because their contents should be preserved. This allowed kexec-tools
to tell the difference between 'reserved' memory that must be
preserved and not overwritten, (e.g. the ACPI tables), and 'nomap'
memory that must not be touched without knowing the memory-attributes
(e.g. RAS CPER regions).
The above commit wrongly assumed that memblock_reserve() would not
be used to reserve regions that aren't memory. It turns out this is
exactly what early_init_dt_reserve_memory_arch() will do if it finds
a DT reserved-memory that was also carved out of the memory node, which
results in a WARN_ON_ONCE() and the region being reserved instead of
ignored. The ramoops description on hikey and dragonboard-410c both do
this, so we can't simply write this configuration off as "buggy firmware".
Avoid this issue by rewriting reserve_memblock_reserved_regions() so
that only the portions of reserved regions which overlap with mapped
memory are actually reserved.
Fixes: 50d7ba36b9 ("arm64: export memblock_reserve()d regions via /proc/iomem")
Reported-by: John Stultz <john.stultz@linaro.org>
Reported-by: Paolo Pisati <p.pisati@gmail.com>
CC: Akashi Takahiro <takahiro.akashi@linaro.org>
CC: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: James Morse <james.morse@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Access to the list of cells by /proc/net/afs/cells has a couple of
problems:
(1) It should be checking against SEQ_START_TOKEN for the keying the
header line.
(2) It's only holding the RCU read lock, so it can't just walk over the
list without following the proper RCU methods.
Fix these by using an hlist instead of an ordinary list and using the
appropriate accessor functions to follow it with RCU.
Since the code that adds a cell to the list must also necessarily change,
sort the list on insertion whilst we're at it.
Fixes: 989782dcdc ("afs: Overhaul cell database management")
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
