- 14 May, 2020 40 commits
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Rasmus Villemoes authored
BugLink: https://bugs.launchpad.net/bugs/1878246 commit 76a56367 upstream. Ironically, 7d4020c3 ("[media] exynos4-is: fix some warnings when compiling on arm64") fixed some format string bugs but introduced a new one. buf_index is a simple int, so it should be printed with %d, not %pad (which is correctly used for dma_addr_t). Fixes: 7d4020c3 ("[media] exynos4-is: fix some warnings when compiling on arm64") Signed-off-by:
Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by:
Mauro Carvalho Chehab <mchehab@osg.samsung.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
Ian May <ian.may@canonical.com> Signed-off-by:
Kleber Sacilotto de Souza <kleber.souza@canonical.com>
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Peter Zijlstra authored
BugLink: https://bugs.launchpad.net/bugs/1878246 commit e01d8718 upstream. When calling intel_alt_er() with .idx != EXTRA_REG_RSP_* we will not initialize alt_idx and then use this uninitialized value to index an array. When that is not fatal, it can result in an infinite loop in its caller __intel_shared_reg_get_constraints(), with IRQs disabled. Alternative error modes are random memory corruption due to the cpuc->shared_regs->regs[] array overrun, which manifest in either get_constraints or put_constraints doing weird stuff. Only took 6 hours of painful debugging to find this. Neither GCC nor Smatch warnings flagged this bug. Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Fixes: ae3f011f ("perf/x86/intel: Fix SLM MSR_OFFCORE_RSP1 valid_mask") Signed-off-by:
Ingo Molnar <mingo@kernel.org> Signed-off-by:
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Madhavan Srinivasan authored
BugLink: https://bugs.launchpad.net/bugs/1878246 commit 370f06c8 upstream. Commit 7a786832 ("powerpc/perf: Add an explict flag indicating presence of SLOT field") introduced the PPMU_HAS_SSLOT flag to remove the assumption that MMCRA[SLOT] was present when PPMU_ALT_SIPR was not set. That commit's changelog also mentions that Power8 does not support MMCRA[SLOT]. However when the Power8 PMU support was merged, it errnoeously included the PPMU_HAS_SSLOT flag. So remove PPMU_HAS_SSLOT from the Power8 flags. mpe: On systems where MMCRA[SLOT] exists, the field occupies bits 37:39 (IBM numbering). On Power8 bit 37 is reserved, and 38:39 overlap with the high bits of the Threshold Event Counter Mantissa. I am not aware of any published events which use the threshold counting mechanism, which would cause the mantissa bits to be set. So in practice this bug is unlikely to trigger. Fixes: e05b9b9e ("powerpc/perf: Power8 PMU support") Signed-off-by:
Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> Signed-off-by:
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Jiri Olsa authored
BugLink: https://bugs.launchpad.net/bugs/1878246 commit 0805909f upstream. Set correct width for unresolved mem_dcacheline addr. Signed-off-by:
Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Fixes: 9b32ba71 ("perf tools: Add dcacheline sort") Link: http://lkml.kernel.org/r/1453290995-18485-3-git-send-email-jolsa@kernel.orgSigned-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by:
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Andy Shevchenko authored
BugLink: https://bugs.launchpad.net/bugs/1878246 commit 08c6e8cc upstream. This is effectively reapplies the commit b0898fda ("i2c: designware-pci: use IRQF_COND_SUSPEND flag") after the commit d80d1341 ("i2c: designware: Move common probe code into i2c_dw_probe()"). Original message as follows. The mentioned flag fixes a warning on Intel Edison board since one of the I2C controller shares IRQ line with watchdog timer. Fixes: d80d1341 (i2c: designware: Move common probe code into i2c_dw_probe()) Signed-off-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by:
Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by:
Wolfram Sang <wsa@the-dreams.de> Signed-off-by:
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Andy Shevchenko authored
BugLink: https://bugs.launchpad.net/bugs/1878246 commit b9f96020 upstream. Under some circumstances, i.e. when test is still running and about to time out and user runs, for example, grep -H . /sys/module/dmatest/parameters/* the iterations parameter is not respected and test is going on and on until user gives echo 0 > /sys/module/dmatest/parameters/run This is not what expected. The history of this bug is interesting. I though that the commit 2d88ce76 ("dmatest: add a 'wait' parameter") is a culprit, but looking closer to the code I think it simple revealed the broken logic from the day one, i.e. in the commit 0a2ff57d ("dmaengine: dmatest: add a maximum number of test iterations") which adds iterations parameter. So, to the point, the conditional of checking the thread to be stopped being first part of conjunction logic prevents to check iterations. Thus, we have to always check both conditions to be able to stop after given iterations. Since it wasn't visible before second commit appeared, I add a respective Fixes tag. Fixes: 2d88ce76 ("dmatest: add a 'wait' parameter") Cc: Dan Williams <dan.j.williams@intel.com> Cc: Nicolas Ferre <nicolas.ferre@microchip.com> Signed-off-by:
Nicolas Ferre <nicolas.ferre@microchip.com> Link: https://lore.kernel.org/r/20200424161147.16895-1-andriy.shevchenko@linux.intel.comSigned-off-by:
Vinod Koul <vkoul@kernel.org> Signed-off-by:
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Andreas Gruenbacher authored
BugLink: https://bugs.launchpad.net/bugs/1878246 commit 7648f939 upstream. nfs3_set_acl keeps track of the acl it allocated locally to determine if an acl needs to be released at the end. This results in a memory leak when the function allocates an acl as well as a default acl. Fix by releasing acls that differ from the acl originally passed into nfs3_set_acl. Fixes: b7fa0554 ("[PATCH] NFS: Add support for NFSv3 ACLs") Reported-by:
Xiyu Yang <xiyuyang19@fudan.edu.cn> Signed-off-by:
Andreas Gruenbacher <agruenba@redhat.com> Signed-off-by:
Trond Myklebust <trond.myklebust@hammerspace.com> Signed-off-by:
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Arnd Bergmann authored
BugLink: https://bugs.launchpad.net/bugs/1878246 commit 5ce00760 upstream. gcc-10 points out a few instances of suspicious integer arithmetic leading to value truncation: sound/isa/opti9xx/opti92x-ad1848.c: In function 'snd_opti9xx_configure': sound/isa/opti9xx/opti92x-ad1848.c:322:43: error: overflow in conversion from 'int' to 'unsigned char' changes value from '(int)snd_opti9xx_read(chip, 3) & -256 | 240' to '240' [-Werror=overflow] 322 | (snd_opti9xx_read(chip, reg) & ~(mask)) | ((value) & (mask))) | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~ sound/isa/opti9xx/opti92x-ad1848.c:351:3: note: in expansion of macro 'snd_opti9xx_write_mask' 351 | snd_opti9xx_write_mask(chip, OPTi9XX_MC_REG(3), 0xf0, 0xff); | ^~~~~~~~~~~~~~~~~~~~~~ sound/isa/opti9xx/miro.c: In function 'snd_miro_configure': sound/isa/opti9xx/miro.c:873:40: error: overflow in conversion from 'int' to 'unsigned char' changes value from '(int)snd_miro_read(chip, 3) & -256 | 240' to '240' [-Werror=overflow] 873 | (snd_miro_read(chip, reg) & ~(mask)) | ((value) & (mask))) | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~ sound/isa/opti9xx/miro.c:1010:3: note: in expansion of macro 'snd_miro_write_mask' 1010 | snd_miro_write_mask(chip, OPTi9XX_MC_REG(3), 0xf0, 0xff); | ^~~~~~~~~~~~~~~~~~~ These are all harmless here as only the low 8 bit are passed down anyway. Change the macros to inline functions to make the code more readable and also avoid the warning. Strictly speaking those functions also need locking to make the read/write pair atomic, but it seems unlikely that anyone would still run into that issue. Fixes: 1841f613 ("[ALSA] Add snd-miro driver") Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20200429190216.85919-1-arnd@arndb.deSigned-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
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Sean Christopherson authored
BugLink: https://bugs.launchpad.net/bugs/1878246 commit 5cbf3264 upstream. Use follow_pfn() to get the PFN of a PFNMAP VMA instead of assuming that vma->vm_pgoff holds the base PFN of the VMA. This fixes a bug where attempting to do VFIO_IOMMU_MAP_DMA on an arbitrary PFNMAP'd region of memory calculates garbage for the PFN. Hilariously, this only got detected because the first "PFN" calculated by vaddr_get_pfn() is PFN 0 (vma->vm_pgoff==0), and iommu_iova_to_phys() uses PA==0 as an error, which triggers a WARN in vfio_unmap_unpin() because the translation "failed". PFN 0 is now unconditionally reserved on x86 in order to mitigate L1TF, which causes is_invalid_reserved_pfn() to return true and in turns results in vaddr_get_pfn() returning success for PFN 0. Eventually the bogus calculation runs into PFNs that aren't reserved and leads to failure in vfio_pin_map_dma(). The subsequent call to vfio_remove_dma() attempts to unmap PFN 0 and WARNs. WARNING: CPU: 8 PID: 5130 at drivers/vfio/vfio_iommu_type1.c:750 vfio_unmap_unpin+0x2e1/0x310 [vfio_iommu_type1] Modules linked in: vfio_pci vfio_virqfd vfio_iommu_type1 vfio ... CPU: 8 PID: 5130 Comm: sgx Tainted: G W 5.6.0-rc5-705d787c7fee-vfio+ #3 Hardware name: Intel Corporation Mehlow UP Server Platform/Moss Beach Server, BIOS CNLSE2R1.D00.X119.B49.1803010910 03/01/2018 RIP: 0010:vfio_unmap_unpin+0x2e1/0x310 [vfio_iommu_type1] Code: <0f> 0b 49 81 c5 00 10 00 00 e9 c5 fe ff ff bb 00 10 00 00 e9 3d fe RSP: 0018:ffffbeb5039ebda8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff9a55cbf8d480 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff9a52b771c200 RBP: 0000000000000000 R08: 0000000000000040 R09: 00000000fffffff2 R10: 0000000000000001 R11: ffff9a51fa896000 R12: 0000000184010000 R13: 0000000184000000 R14: 0000000000010000 R15: ffff9a55cb66ea08 FS: 00007f15d3830b40(0000) GS:ffff9a55d5600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000561cf39429e0 CR3: 000000084f75f005 CR4: 00000000003626e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vfio_remove_dma+0x17/0x70 [vfio_iommu_type1] vfio_iommu_type1_ioctl+0x9e3/0xa7b [vfio_iommu_type1] ksys_ioctl+0x92/0xb0 __x64_sys_ioctl+0x16/0x20 do_syscall_64+0x4c/0x180 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f15d04c75d7 Code: <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 81 48 2d 00 f7 d8 64 89 01 48 Fixes: 73fa0d10 ("vfio: Type1 IOMMU implementation") Signed-off-by:
Sean Christopherson <sean.j.christopherson@intel.com> Signed-off-by:
Alex Williamson <alex.williamson@redhat.com> Signed-off-by:
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Alaa Hleihel authored
BugLink: https://bugs.launchpad.net/bugs/1878246 commit c08cfb2d upstream. Initialize ib_spec on the stack before using it, otherwise we will have garbage values that will break creating default rules with invalid parsing error. Fixes: a37a1a42 ("IB/mlx4: Add mechanism to support flow steering over IB links") Link: https://lore.kernel.org/r/20200413132235.930642-1-leon@kernel.orgSigned-off-by:
Alaa Hleihel <alaa@mellanox.com> Reviewed-by:
Maor Gottlieb <maorg@mellanox.com> Signed-off-by:
Leon Romanovsky <leonro@mellanox.com> Signed-off-by:
Jason Gunthorpe <jgg@mellanox.com> Signed-off-by:
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Kai-Heng Feng authored
BugLink: https://bugs.launchpad.net/bugs/1878246 commit a9b760b0 upstream. Transitioned power state logged at the end of setting ACPI power. However, D3cold won't be in the message because state can only be D3hot at most. Use target_state to corretly report when power state is D3cold. Cc: All applicable <stable@vger.kernel.org> Signed-off-by:
Kai-Heng Feng <kai.heng.feng@canonical.com> Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by:
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Takashi Iwai authored
BugLink: https://bugs.launchpad.net/bugs/1878246 commit 4285de07 upstream. The checks of the plugin buffer overflow in the previous fix by commit f2ecf903 ("ALSA: pcm: oss: Avoid plugin buffer overflow") are put in the wrong places mistakenly, which leads to the expected (repeated) sound when the rate plugin is involved. Fix in the right places. Also, at those right places, the zero check is needed for the termination node, so added there as well, and let's get it done, finally. Fixes: f2ecf903 ("ALSA: pcm: oss: Avoid plugin buffer overflow") Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20200424193350.19678-1-tiwai@suse.deSigned-off-by:
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Vasily Averin authored
BugLink: https://bugs.launchpad.net/bugs/1878246 commit a65aa9c3 upstream. Cc: stable@vger.kernel.org Fixes: 8002db63 ("qxl: convert qxl driver to proper use for reservations") Signed-off-by:
Vasily Averin <vvs@virtuozzo.com> Link: http://patchwork.freedesktop.org/patch/msgid/2e5a13ae-9ab2-5401-aa4d-03d5f5593423@virtuozzo.comSigned-off-by:
Gerd Hoffmann <kraxel@redhat.com> Signed-off-by:
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Theodore Ts'o authored
BugLink: https://bugs.launchpad.net/bugs/1878246 commit 191ce178 upstream. The check for special (reserved) inode number checks in __ext4_iget() was broken by commit 8a363970: ("ext4: avoid declaring fs inconsistent due to invalid file handles"). This was caused by a botched reversal of the sense of the flag now known as EXT4_IGET_SPECIAL (when it was previously named EXT4_IGET_NORMAL). Fix the logic appropriately. Fixes: 8a363970 ("ext4: avoid declaring fs inconsistent...") Signed-off-by:
Theodore Ts'o <tytso@mit.edu> Reported-by:
Dan Carpenter <dan.carpenter@oracle.com> Cc: stable@kernel.org Cc: Guenter Roeck <linux@roeck-us.net> Signed-off-by:
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Greg Kroah-Hartman authored
BugLink: https://bugs.launchpad.net/bugs/1878098Signed-off-by:
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Al Viro authored
BugLink: https://bugs.launchpad.net/bugs/1878098 commit b0d3869c upstream. ... to protect the modification of mp->m_count done by it. Most of the places that modify that thing also have namespace_lock held, but not all of them can do so, so we really need mount_lock here. Kudos to Piotr Krysiuk <piotras@gmail.com>, who'd spotted a related bug in pivot_root(2) (fixed unnoticed in 5.3); search for other similar turds has caught out this one. Cc: stable@kernel.org Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
Piotr Krysiuk <piotras@gmail.com> Signed-off-by:
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Colin Ian King authored
BugLink: https://bugs.launchpad.net/bugs/1878098 commit fbbbbd2f upstream. There are two cases where u32 variables n and err are being checked for less than zero error values, the checks is always false because the variables are not signed. Fix this by making the variables ints. Addresses-Coverity: ("Unsigned compared against 0") Fixes: 345c0dbf ("ext4: protect journal inode's blocks using block_validity") Signed-off-by:
Colin Ian King <colin.king@canonical.com> Signed-off-by:
Ashwin H <ashwinh@vmware.com> Signed-off-by:
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Theodore Ts'o authored
BugLink: https://bugs.launchpad.net/bugs/1878098 commit 170417c8 upstream. Commit 345c0dbf ("ext4: protect journal inode's blocks using block_validity") failed to add an exception for the journal inode in ext4_check_blockref(), which is the function used by ext4_get_branch() for indirect blocks. This caused attempts to read from the ext3-style journals to fail with: [ 848.968550] EXT4-fs error (device sdb7): ext4_get_branch:171: inode #8: block 30343695: comm jbd2/sdb7-8: invalid block Fix this by adding the missing exception check. Fixes: 345c0dbf ("ext4: protect journal inode's blocks using block_validity") Reported-by:
Arthur Marsh <arthur.marsh@internode.on.net> Signed-off-by:
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Theodore Ts'o authored
BugLink: https://bugs.launchpad.net/bugs/1878098 commit 0a944e8a upstream. Since the journal inode is already checked when we added it to the block validity's system zone, if we check it again, we'll just trigger a failure. This was causing failures like this: [ 53.897001] EXT4-fs error (device sda): ext4_find_extent:909: inode #8: comm jbd2/sda-8: pblk 121667583 bad header/extent: invalid extent entries - magic f30a, entries 8, max 340(340), depth 0(0) [ 53.931430] jbd2_journal_bmap: journal block not found at offset 49 on sda-8 [ 53.938480] Aborting journal on device sda-8. ... but only if the system was under enough memory pressure that logical->physical mapping for the journal inode gets pushed out of the extent cache. (This is why it wasn't noticed earlier.) Fixes: 345c0dbf ("ext4: protect journal inode's blocks using block_validity") Reported-by:
Dan Rue <dan.rue@linaro.org> Signed-off-by:
Naresh Kamboju <naresh.kamboju@linaro.org> Signed-off-by:
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Theodore Ts'o authored
BugLink: https://bugs.launchpad.net/bugs/1878098 commit 345c0dbf upstream. Add the blocks which belong to the journal inode to block_validity's system zone so attempts to deallocate or overwrite the journal due a corrupted file system where the journal blocks are also claimed by another inode. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=202879Signed-off-by:
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Theodore Ts'o authored
BugLink: https://bugs.launchpad.net/bugs/1878098 commit 8a363970 upstream. If we receive a file handle, either from NFS or open_by_handle_at(2), and it points at an inode which has not been initialized, and the file system has metadata checksums enabled, we shouldn't try to get the inode, discover the checksum is invalid, and then declare the file system as being inconsistent. This can be reproduced by creating a test file system via "mke2fs -t ext4 -O metadata_csum /tmp/foo.img 8M", mounting it, cd'ing into that directory, and then running the following program. #define _GNU_SOURCE #include <fcntl.h> struct handle { struct file_handle fh; unsigned char fid[MAX_HANDLE_SZ]; }; int main(int argc, char **argv) { struct handle h = {{8, 1 }, { 12, }}; open_by_handle_at(AT_FDCWD, &h.fh, O_RDONLY); return 0; } Google-Bug-Id: 120690101 Signed-off-by:
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Theodore Ts'o authored
BugLink: https://bugs.launchpad.net/bugs/1878098 [ Upstream commit 907ea529 ] If the in-core buddy bitmap gets corrupted (or out of sync with the block bitmap), issue a WARN_ON and try to recover. In most cases this involves skipping trying to allocate out of a particular block group. We can end up declaring the file system corrupted, which is fair, since the file system probably should be checked before we proceed any further. Link: https://lore.kernel.org/r/20200414035649.293164-1-tytso@mit.edu Google-Bug-Id: 34811296 Google-Bug-Id: 34639169 Signed-off-by:
Sasha Levin <sashal@kernel.org> Signed-off-by:
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Juergen Gross authored
BugLink: https://bugs.launchpad.net/bugs/1878098 [ Upstream commit 6b51fd3f ] xenbus_map_ring_valloc() maps a ring page and returns the status of the used grant (0 meaning success). There are Xen hypervisors which might return the value 1 for the status of a failed grant mapping due to a bug. Some callers of xenbus_map_ring_valloc() test for errors by testing the returned status to be less than zero, resulting in no error detected and crashing later due to a not available ring page. Set the return value of xenbus_map_ring_valloc() to GNTST_general_error in case the grant status reported by Xen is greater than zero. This is part of XSA-316. Signed-off-by:
Juergen Gross <jgross@suse.com> Reviewed-by:
Wei Liu <wl@xen.org> Link: https://lore.kernel.org/r/20200326080358.1018-1-jgross@suse.comSigned-off-by:
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Bodo Stroesser authored
BugLink: https://bugs.launchpad.net/bugs/1878098 [ Upstream commit 8fed04eb ] Creation of the response to READ FULL STATUS fails for FC based reservations. Reason is the too high loop limit (< 24) in fc_get_pr_transport_id(). The string representation of FC WWPN is 23 chars long only ("11:22:33:44:55:66:77:88"). So when i is 23, the loop body is executed a last time for the ending '\0' of the string and thus hex2bin() reports an error. Link: https://lore.kernel.org/r/20200408132610.14623-3-bstroesser@ts.fujitsu.comSigned-off-by:
Bodo Stroesser <bstroesser@ts.fujitsu.com> Reviewed-by:
Mike Christie <mchristi@redhat.com> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by:
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Luke Nelson authored
BugLink: https://bugs.launchpad.net/bugs/1878098 [ Upstream commit aee194b1 ] This patch fixes an encoding bug in emit_stx for BPF_B when the source register is BPF_REG_FP. The current implementation for BPF_STX BPF_B in emit_stx saves one REX byte when the operands can be encoded using Mod-R/M alone. The lower 8 bits of registers %rax, %rbx, %rcx, and %rdx can be accessed without using a REX prefix via %al, %bl, %cl, and %dl, respectively. Other registers, (e.g., %rsi, %rdi, %rbp, %rsp) require a REX prefix to use their 8-bit equivalents (%sil, %dil, %bpl, %spl). The current code checks if the source for BPF_STX BPF_B is BPF_REG_1 or BPF_REG_2 (which map to %rdi and %rsi), in which case it emits the required REX prefix. However, it misses the case when the source is BPF_REG_FP (mapped to %rbp). The result is that BPF_STX BPF_B with BPF_REG_FP as the source operand will read from register %ch instead of the correct %bpl. This patch fixes the problem by fixing and refactoring the check on which registers need the extra REX byte. Since no BPF registers map to %rsp, there is no need to handle %spl. Fixes: 62258278 ("net: filter: x86: internal BPF JIT") Signed-off-by:
Xi Wang <xi.wang@gmail.com> Signed-off-by:
Luke Nelson <luke.r.nels@gmail.com> Signed-off-by:
Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200418232655.23870-1-luke.r.nels@gmail.comSigned-off-by:
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Ian Rogers authored
BugLink: https://bugs.launchpad.net/bugs/1878098 commit f3bed55e upstream. Current logic yields the child task as the parent. Before: $ perf record bash -c "perf list > /dev/null" $ perf script -D |grep 'FORK\|EXIT' 4387036190981094 0x5a70 [0x30]: PERF_RECORD_FORK(10472:10472):(10470:10470) 4387036606207580 0xf050 [0x30]: PERF_RECORD_EXIT(10472:10472):(10472:10472) 4387036607103839 0x17150 [0x30]: PERF_RECORD_EXIT(10470:10470):(10470:10470) ^ Note the repeated values here -------------------/ After: 383281514043 0x9d8 [0x30]: PERF_RECORD_FORK(2268:2268):(2266:2266) 383442003996 0x2180 [0x30]: PERF_RECORD_EXIT(2268:2268):(2266:2266) 383451297778 0xb70 [0x30]: PERF_RECORD_EXIT(2266:2266):(2265:2265) Fixes: 94d5d1b2 ("perf_counter: Report the cloning task as parent on perf_counter_fork()") Reported-by:
KP Singh <kpsingh@google.com> Signed-off-by:
Ian Rogers <irogers@google.com> Signed-off-by:
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Jason Gunthorpe authored
BugLink: https://bugs.launchpad.net/bugs/1878098 commit c799fca8 upstream. Positive return values are also failures that don't set val, although this probably can't happen. Fixes gcc 10 warning: drivers/net/ethernet/chelsio/cxgb4/t4_hw.c: In function ‘t4_phy_fw_ver’: drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3747:14: warning: ‘val’ may be used uninitialized in this function [-Wmaybe-uninitialized] 3747 | *phy_fw_ver = val; Fixes: 01b69614 ("cxgb4: Add PHY firmware support for T420-BT cards") Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
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Nathan Chancellor authored
BugLink: https://bugs.launchpad.net/bugs/1878098 commit 09b04abb upstream. When building with Clang + -Wtautological-pointer-compare: drivers/usb/gadget/udc/bdc/bdc_ep.c:543:28: warning: comparison of address of 'req->queue' equal to a null pointer is always false [-Wtautological-pointer-compare] if (req == NULL || &req->queue == NULL || &req->usb_req == NULL) ~~~~~^~~~~ ~~~~ drivers/usb/gadget/udc/bdc/bdc_ep.c:543:51: warning: comparison of address of 'req->usb_req' equal to a null pointer is always false [-Wtautological-pointer-compare] if (req == NULL || &req->queue == NULL || &req->usb_req == NULL) ~~~~~^~~~~~~ ~~~~ 2 warnings generated. As it notes, these statements will always evaluate to false so remove them. Fixes: efed421a ("usb: gadget: Add UDC driver for Broadcom USB3.0 device controller IP BDC") Link: https://github.com/ClangBuiltLinux/linux/issues/749Signed-off-by:
Nathan Chancellor <natechancellor@gmail.com> Signed-off-by:
Felipe Balbi <balbi@kernel.org> Signed-off-by:
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Liu Jian authored
BugLink: https://bugs.launchpad.net/bugs/1878098 commit d9b8a67b upstream. In function do_write_buffer(), in the for loop, there is a case chip_ready() returns 1 while chip_good() returns 0, so it never break the loop. To fix this, chip_good() is enough and it should timeout if it stay bad for a while. Fixes: dfeae107("mtd: cfi_cmdset_0002: Change write buffer to check correct value") Signed-off-by:
Yi Huaijie <yihuaijie@huawei.com> Signed-off-by:
Liu Jian <liujian56@huawei.com> Reviewed-by:
Tokunori Ikegami <ikegami_to@yahoo.co.jp> Signed-off-by:
Richard Weinberger <richard@nod.at> Cc: Guenter Roeck <linux@roeck-us.net> Signed-off-by:
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Miklos Szeredi authored
BugLink: https://bugs.launchpad.net/bugs/1878098 commit 2d84a2d1 upstream. In current fuse_drop_waiting() implementation it's possible that fuse_wait_aborted() will not be woken up in the unlikely case that fuse_abort_conn() + fuse_wait_aborted() runs in between checking fc->connected and calling atomic_dec(&fc->num_waiting). Do the atomic_dec_and_test() unconditionally, which also provides the necessary barrier against reordering with the fc->connected check. The explicit smp_mb() in fuse_wait_aborted() is not actually needed, since the spin_unlock() in fuse_abort_conn() provides the necessary RELEASE barrier after resetting fc->connected. However, this is not a performance sensitive path, and adding the explicit barrier makes it easier to document. Signed-off-by:
Miklos Szeredi <mszeredi@redhat.com> Fixes: b8f95e5d ("fuse: umount should wait for all requests") Cc: <stable@vger.kernel.org> #v4.19 Cc: Guenter Roeck <linux@roeck-us.net> Signed-off-by:
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Xin Long authored
BugLink: https://bugs.launchpad.net/bugs/1878098 commit a8dd3979 upstream. Commit d04adf1b ("sctp: reset owner sk for data chunks on out queues when migrating a sock") made a mistake that using 'list' as the param of list_for_each_entry to traverse the retransmit, sacked and abandoned queues, while chunks are using 'transmitted_list' to link into these queues. It could cause NULL dereference panic if there are chunks in any of these queues when peeling off one asoc. So use the chunk member 'transmitted_list' instead in this patch. Fixes: d04adf1b ("sctp: reset owner sk for data chunks on out queues when migrating a sock") Signed-off-by:
Xin Long <lucien.xin@gmail.com> Acked-by:
Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Acked-by:
Neil Horman <nhorman@tuxdriver.com> Signed-off-by:
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Clement Leger authored
BugLink: https://bugs.launchpad.net/bugs/1878098 commit 00a0eec5 upstream. Index of rvring is computed using pointer arithmetic. However, since rvring->rvdev->vring is the base of the vring array, computation of rvring idx should be reversed. It previously lead to writing at negative indices in the resource table. Signed-off-by:
Clement Leger <cleger@kalray.eu> Link: https://lore.kernel.org/r/20191004073736.8327-1-cleger@kalray.euSigned-off-by:
Bjorn Andersson <bjorn.andersson@linaro.org> Cc: Doug Anderson <dianders@chromium.org> Signed-off-by:
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Udipto Goswami authored
BugLink: https://bugs.launchpad.net/bugs/1878098 commit 1c2e54fb upstream. For userspace functions using OS Descriptors, if a function also supplies Extended Property descriptors currently the counts and lengths stored in the ms_os_descs_ext_prop_{count,name_len,data_len} variables are not getting reset to 0 during an unbind or when the epfiles are closed. If the same function is re-bound and the descriptors are re-written, this results in those count/length variables to monotonically increase causing the VLA allocation in _ffs_func_bind() to grow larger and larger at each bind/unbind cycle and eventually fail to allocate. Fix this by clearing the ms_os_descs_ext_prop count & lengths to 0 in ffs_data_reset(). Fixes: f0175ab5 ("usb: gadget: f_fs: OS descriptors support") Cc: stable@vger.kernel.org Signed-off-by:
Udipto Goswami <ugoswami@codeaurora.org> Signed-off-by:
Sriharsha Allenki <sallenki@codeaurora.org> Reviewed-by:
Manu Gautam <mgautam@codeaurora.org> Link: https://lore.kernel.org/r/20200402044521.9312-1-sallenki@codeaurora.orgSigned-off-by:
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Oliver Neukum authored
BugLink: https://bugs.launchpad.net/bugs/1878098 commit f6cc6093 upstream. A SCSI error handler and block runtime PM must not allocate memory with GFP_KERNEL. Furthermore they must not wait for tasks allocating memory with GFP_KERNEL. That means that they cannot share a workqueue with arbitrary tasks. Fix this for UAS using a private workqueue. Signed-off-by:
Oliver Neukum <oneukum@suse.com> Fixes: f9dc024a ("uas: pre_reset and suspend: Fix a few races") Cc: stable <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20200415141750.811-2-oneukum@suse.comSigned-off-by:
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Oliver Neukum authored
BugLink: https://bugs.launchpad.net/bugs/1878098 commit 5963dec9 upstream. Once a device is gone, the internal state does not matter anymore. There is no need to spam the logs. Signed-off-by:
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Malcolm Priestley authored
BugLink: https://bugs.launchpad.net/bugs/1878098 commit ea81c348 upstream. conf.listen_interval can sometimes be zero causing wake_up_count to wrap around up to many beacons too late causing CTRL-EVENT-BEACON-LOSS as in. wpa_supplicant[795]: message repeated 45 times: [..CTRL-EVENT-BEACON-LOSS ] Fixes: 43c93d9b ("staging: vt6656: implement power saving code.") Cc: stable <stable@vger.kernel.org> Signed-off-by:
Malcolm Priestley <tvboxspy@gmail.com> Link: https://lore.kernel.org/r/fce47bb5-7ca6-7671-5094-5c6107302f2b@gmail.comSigned-off-by:
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Malcolm Priestley authored
BugLink: https://bugs.launchpad.net/bugs/1878098 commit 09057742 upstream. The drivers TBTT counter is not synchronized with mac80211 timestamp. Reorder the functions and use vnt_update_next_tbtt to do the final synchronize. Fixes: c1515879 ("staging: vt6656: implement TSF counter") Cc: stable <stable@vger.kernel.org> Signed-off-by:
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Xiyu Yang authored
BugLink: https://bugs.launchpad.net/bugs/1878098 commit 332e0e17 upstream. comedi_open() invokes comedi_dev_get_from_minor(), which returns a reference of the COMEDI device to "dev" with increased refcount. When comedi_open() returns, "dev" becomes invalid, so the refcount should be decreased to keep refcount balanced. The reference counting issue happens in one exception handling path of comedi_open(). When "cfp" allocation is failed, the refcnt increased by comedi_dev_get_from_minor() is not decreased, causing a refcnt leak. Fix this issue by calling comedi_dev_put() on this error path when "cfp" allocation is failed. Fixes: 20f083c0 ("staging: comedi: prepare support for per-file read and write subdevices") Signed-off-by:
Xin Tan <tanxin.ctf@gmail.com> Signed-off-by:
Ian Abbott <abbotti@mev.co.uk> Link: https://lore.kernel.org/r/1587361459-83622-1-git-send-email-xiyuyang19@fudan.edu.cnSigned-off-by:
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Ian Abbott authored
BugLink: https://bugs.launchpad.net/bugs/1878098 commit ed87d33d upstream. The DT2815 analog output command is 16 bits wide, consisting of the 12-bit sample value in bits 15 to 4, the channel number in bits 3 to 1, and a voltage or current selector in bit 0. Both bytes of the 16-bit command need to be written in turn to a single 8-bit data register. However, the driver currently only writes the low 8-bits. It is broken and appears to have always been broken. Electronic copies of the DT2815 User's Manual seem impossible to find online, but looking at the source code, a best guess for the sequence the driver intended to use to write the analog output command is as follows: 1. Wait for the status register to read 0x00. 2. Write the low byte of the command to the data register. 3. Wait for the status register to read 0x80. 4. Write the high byte of the command to the data register. Step 4 is missing from the driver. Add step 4 to (hopefully) fix the driver. Also add a "FIXME" comment about setting bit 0 of the low byte of the command. Supposedly, it is used to choose between voltage output and current output, but the current driver always sets it to 1. Signed-off-by:
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Ahmad Fatoum authored
BugLink: https://bugs.launchpad.net/bugs/1878098 commit f1baca88 upstream. 512a928a ("ARM: imx: build v7_cpu_resume() unconditionally") introduced an unintended linker error for i.MX6 configurations that have ARM_CPU_SUSPEND=n which can happen if neither CONFIG_PM, CONFIG_CPU_IDLE, nor ARM_PSCI_FW are selected. Fix this by having v7_cpu_resume() compiled only when cpu_resume() it calls is available as well. The C declaration for the function remains unguarded to avoid future code inadvertently using a stub and introducing a regression to the bug the original commit fixed. Cc: <stable@vger.kernel.org> Fixes: 512a928a ("ARM: imx: build v7_cpu_resume() unconditionally") Reported-by:
Clemens Gruber <clemens.gruber@pqgruber.com> Signed-off-by:
Ahmad Fatoum <a.fatoum@pengutronix.de> Tested-by:
Roland Hieber <rhi@pengutronix.de> Signed-off-by:
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