- 13 Nov, 2014 40 commits
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Cyril Brulebois authored
commit 664d6a79 upstream. 0x1b75 0xa200 AirLive WN-200USB wireless 11b/g/n dongle References: https://bugs.debian.org/766802Reported-by:
Martin Mokrejs <mmokrejs@fold.natur.cuni.cz> Signed-off-by:
Cyril Brulebois <kibi@debian.org> Acked-by:
Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by:
John W. Linville <linville@tuxdriver.com> Signed-off-by:
Luis Henriques <luis.henriques@canonical.com>
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Greg Kroah-Hartman authored
commit d8e7d53a upstream. Back in commit 5136b2da ("PCI: convert bus code to use dev_groups"), I misstyped the 'enable' sysfs filename as 'enabled', which broke the userspace API. This patch fixes that issue by renaming the file back. Fixes: 5136b2da ("PCI: convert bus code to use dev_groups") Reported-by:
Jeff Epler <jepler@unpythonic.net> Tested-by: Jeff Epler <jepler@unpythonic.net> # on v3.14-rt Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
Bjorn Helgaas <bhelgaas@google.com> Signed-off-by:
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Jan Kara authored
commit 6050d47a upstream. When ext4_handle_dirty_dx_node() or ext4_handle_dirty_dirent_node() fail, there's really something wrong with the fs and there's no point in continuing further. Just return error from make_indexed_dir() in that case. Also initialize frames array so that if we return early due to error, dx_release() doesn't try to dereference uninitialized memory (which could happen also due to error in do_split()). Coverity-id: 741300 Signed-off-by:
Jan Kara <jack@suse.cz> Signed-off-by:
Theodore Ts'o <tytso@mit.edu> Signed-off-by:
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Theodore Ts'o authored
commit f8b3b59d upstream. Signed-off-by:
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Dmitry Monakhov authored
commit a41537e6 upstream. O_DIRECT flags can be toggeled via fcntl(F_SETFL). But this value checked twice inside ext4_file_write_iter() and __generic_file_write() which result in BUG_ON inside ext4_direct_IO. Let's initialize iocb->private unconditionally. TESTCASE: xfstest:generic/036 https://patchwork.ozlabs.org/patch/402445/ #TYPICAL STACK TRACE: kernel BUG at fs/ext4/inode.c:2960! invalid opcode: 0000 [#1] SMP Modules linked in: brd iTCO_wdt lpc_ich mfd_core igb ptp dm_mirror dm_region_hash dm_log dm_mod CPU: 6 PID: 5505 Comm: aio-dio-fcntl-r Not tainted 3.17.0-rc2-00176-gff5c017 #161 Hardware name: Intel Corporation W2600CR/W2600CR, BIOS SE5C600.86B.99.99.x028.061320111235 06/13/2011 task: ffff88080e95a7c0 ti: ffff88080f908000 task.ti: ffff88080f908000 RIP: 0010:[<ffffffff811fabf2>] [<ffffffff811fabf2>] ext4_direct_IO+0x162/0x3d0 RSP: 0018:ffff88080f90bb58 EFLAGS: 00010246 RAX: 0000000000000400 RBX: ffff88080fdb2a28 RCX: 00000000a802c818 RDX: 0000040000080000 RSI: ffff88080d8aeb80 RDI: 0000000000000001 RBP: ffff88080f90bbc8 R08: 0000000000000000 R09: 0000000000001581 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88080d8aeb80 R13: ffff88080f90bbf8 R14: ffff88080fdb28c8 R15: ffff88080fdb2a28 FS: 00007f23b2055700(0000) GS:ffff880818400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f23b2045000 CR3: 000000080cedf000 CR4: 00000000000407e0 Stack: ffff88080f90bb98 0000000000000000 7ffffffffffffffe ffff88080fdb2c30 0000000000000200 0000000000000200 0000000000000001 0000000000000200 ffff88080f90bbc8 ffff88080fdb2c30 ffff88080f90be08 0000000000000200 Call Trace: [<ffffffff8112ca9d>] generic_file_direct_write+0xed/0x180 [<ffffffff8112f2b2>] __generic_file_write_iter+0x222/0x370 [<ffffffff811f495b>] ext4_file_write_iter+0x34b/0x400 [<ffffffff811bd709>] ? aio_run_iocb+0x239/0x410 [<ffffffff811bd709>] ? aio_run_iocb+0x239/0x410 [<ffffffff810990e5>] ? local_clock+0x25/0x30 [<ffffffff810abd94>] ? __lock_acquire+0x274/0x700 [<ffffffff811f4610>] ? ext4_unwritten_wait+0xb0/0xb0 [<ffffffff811bd756>] aio_run_iocb+0x286/0x410 [<ffffffff810990e5>] ? local_clock+0x25/0x30 [<ffffffff810ac359>] ? lock_release_holdtime+0x29/0x190 [<ffffffff811bc05b>] ? lookup_ioctx+0x4b/0xf0 [<ffffffff811bde3b>] do_io_submit+0x55b/0x740 [<ffffffff811bdcaa>] ? do_io_submit+0x3ca/0x740 [<ffffffff811be030>] SyS_io_submit+0x10/0x20 [<ffffffff815ce192>] system_call_fastpath+0x16/0x1b Code: 01 48 8b 80 f0 01 00 00 48 8b 18 49 8b 45 10 0f 85 f1 01 00 00 48 03 45 c8 48 3b 43 48 0f 8f e3 01 00 00 49 83 7c 24 18 00 75 04 <0f> 0b eb fe f0 ff 83 ec 01 00 00 49 8b 44 24 18 8b 00 85 c0 89 RIP [<ffffffff811fabf2>] ext4_direct_IO+0x162/0x3d0 RSP <ffff88080f90bb58> Reported-by:
Sasha Levin <sasha.levin@oracle.com> Signed-off-by:
Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by:
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Darrick J. Wong authored
commit 98c1a759 upstream. If metadata checksumming is turned on for the FS, we need to tell the journal to use checksumming too. Signed-off-by:
Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by:
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Jan Kara authored
commit 599a9b77 upstream. When we fail to load block bitmap in __ext4_new_inode() we will dereference NULL pointer in ext4_journal_get_write_access(). So check for error from ext4_read_block_bitmap(). Coverity-id: 989065 Signed-off-by:
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Jan Kara authored
commit 9378c676 upstream. When there are no meta block groups update_backups() will compute the backup block in 32-bit arithmetics thus possibly overflowing the block number and corrupting the filesystem. OTOH filesystems without meta block groups larger than 16 TB should be rare. Fix the problem by doing the counting in 64-bit arithmetics. Coverity-id: 741252 Signed-off-by:
Lukas Czerner <lczerner@redhat.com> Signed-off-by:
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Dmitry Eremin-Solenikov authored
commit 89cf38dd upstream. After '#echo mem > /sys/power/state' some devices can not be properly resumed because apparently the MTD Partition Configuration Register has been reset to default thus the rootfs cannot be mounted cleanly on resume. An example of this can be found in the SA-1100 Developer's Manual at 9.5.3.3 where the second step of the Sleep Shutdown Sequence is described: "An internal reset is applied to the SA-1100. All units are reset...". As workaround we refresh the PCR value as done initially on chip setup. This behavior and the fix are confirmed by our tests done on 2 different Zaurus collie units with kernel 3.17. Fixes: 812c5fa8: ("mtd: cfi_cmdset_0001.c: add support for Sharp LH28F640BF NOR") Signed-off-by:
Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by:
Andrea Adami <andrea.adami@gmail.com> Signed-off-by:
Brian Norris <computersforpeace@gmail.com> Signed-off-by:
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Andriy Skulysh authored
commit 5417421b upstream. Resources scif1_resources & scif2_resources overlap. Actual SCIF region size is 0x10. This is regression from commit d850acf9 ("sh: Declare SCIF register base and IRQ as resources") Signed-off-by:
Andriy Skulysh <askulysh@gmail.com> Acked-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
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Jan Kara authored
commit ea5d05b3 upstream. If __bitmap_shift_left() or __bitmap_shift_right() are asked to shift by a multiple of BITS_PER_LONG, they will try to shift a long value by BITS_PER_LONG bits which is undefined. Change the functions to avoid the undefined shift. Coverity id: 1192175 Coverity id: 1192174 Signed-off-by:
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David Rientjes authored
commit 6d50e60c upstream. If an anonymous mapping is not allowed to fault thp memory and then madvise(MADV_HUGEPAGE) is used after fault, khugepaged will never collapse this memory into thp memory. This occurs because the madvise(2) handler for thp, hugepage_madvise(), clears VM_NOHUGEPAGE on the stack and it isn't stored in vma->vm_flags until the final action of madvise_behavior(). This causes the khugepaged_enter_vma_merge() to be a no-op in hugepage_madvise() when the vma had previously had VM_NOHUGEPAGE set. Fix this by passing the correct vma flags to the khugepaged mm slot handler. There's no chance khugepaged can run on this vma until after madvise_behavior() returns since we hold mm->mmap_sem. It would be possible to clear VM_NOHUGEPAGE directly from vma->vm_flags in hugepage_advise(), but I didn't want to introduce special case behavior into madvise_behavior(). I think it's best to just let it always set vma->vm_flags itself. Signed-off-by:
David Rientjes <rientjes@google.com> Reported-by:
Suleiman Souhlal <suleiman@google.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by:
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Yu Zhao authored
commit 5ddacbe9 upstream. Compound page should be freed by put_page() or free_pages() with correct order. Not doing so will cause tail pages leaked. The compound order can be obtained by compound_order() or use HPAGE_PMD_ORDER in our case. Some people would argue the latter is faster but I prefer the former which is more general. This bug was observed not just on our servers (the worst case we saw is 11G leaked on a 48G machine) but also on our workstations running Ubuntu based distro. $ cat /proc/vmstat | grep thp_zero_page_alloc thp_zero_page_alloc 55 thp_zero_page_alloc_failed 0 This means there is (thp_zero_page_alloc - 1) * (2M - 4K) memory leaked. Fixes: 97ae1749 ("thp: implement refcounting for huge zero page") Signed-off-by:
Yu Zhao <yuzhao@google.com> Acked-by:
Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: David Rientjes <rientjes@google.com> Cc: Bob Liu <lliubbo@gmail.com> Signed-off-by:
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Wang Nan authored
commit 401507d6 upstream. Commit ff7ee93f ("cgroup/kmemleak: Annotate alloc_page() for cgroup allocations") introduces kmemleak_alloc() for alloc_page_cgroup(), but corresponding kmemleak_free() is missing, which makes kmemleak be wrongly disabled after memory offlining. Log is pasted at the end of this commit message. This patch add kmemleak_free() into free_page_cgroup(). During page offlining, this patch removes corresponding entries in kmemleak rbtree. After that, the freed memory can be allocated again by other subsystems without killing kmemleak. bash # for x in 1 2 3 4; do echo offline > /sys/devices/system/memory/memory$x/state ; sleep 1; done ; dmesg | grep leak Offlined Pages 32768 kmemleak: Cannot insert 0xffff880016969000 into the object search tree (overlaps existing) CPU: 0 PID: 412 Comm: sleep Not tainted 3.17.0-rc5+ #86 Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 Call Trace: dump_stack+0x46/0x58 create_object+0x266/0x2c0 kmemleak_alloc+0x26/0x50 kmem_cache_alloc+0xd3/0x160 __sigqueue_alloc+0x49/0xd0 __send_signal+0xcb/0x410 send_signal+0x45/0x90 __group_send_sig_info+0x13/0x20 do_notify_parent+0x1bb/0x260 do_exit+0x767/0xa40 do_group_exit+0x44/0xa0 SyS_exit_group+0x17/0x20 system_call_fastpath+0x16/0x1b kmemleak: Kernel memory leak detector disabled kmemleak: Object 0xffff880016900000 (size 524288): kmemleak: comm "swapper/0", pid 0, jiffies 4294667296 kmemleak: min_count = 0 kmemleak: count = 0 kmemleak: flags = 0x1 kmemleak: checksum = 0 kmemleak: backtrace: log_early+0x63/0x77 kmemleak_alloc+0x4b/0x50 init_section_page_cgroup+0x7f/0xf5 page_cgroup_init+0xc5/0xd0 start_kernel+0x333/0x408 x86_64_start_reservations+0x2a/0x2c x86_64_start_kernel+0xf5/0xfc Fixes: ff7ee93f (cgroup/kmemleak: Annotate alloc_page() for cgroup allocations) Signed-off-by:
Wang Nan <wangnan0@huawei.com> Acked-by:
Johannes Weiner <hannes@cmpxchg.org> Acked-by:
Michal Hocko <mhocko@suse.cz> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by:
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Lv Zheng authored
commit 79149001 upstream. It is reported that Samsung laptops that need to poll events are broken by the following commit: Commit 3afcf2ec Subject: ACPI / EC: Add support to disallow QR_EC to be issued when SCI_EVT isn't set The behaviors of the 2 vendor firmwares are conflict: 1. Acer: OSPM shouldn't issue QR_EC unless SCI_EVT is set, firmware automatically sets SCI_EVT as long as there is event queued up. 2. Samsung: OSPM should issue QR_EC whatever SCI_EVT is set, firmware returns 0 when there is no event queued up. This patch is a quick fix to distinguish the behaviors to make Acer behavior only effective for Acer EC firmware so that the breakages on Samsung EC firmware can be avoided. Fixes: 3afcf2ec (ACPI / EC: Add support to disallow QR_EC to be issued ...) Link: https://bugzilla.kernel.org/show_bug.cgi?id=44161Reported-and-tested-by:
Ortwin Glück <odi@odi.ch> Signed-off-by:
Lv Zheng <lv.zheng@intel.com> [ rjw : Subject ] Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by:
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Dexuan Cui authored
commit d1cd1210 upstream. pte_pfn() returns a PFN of long (32 bits in 32-PAE), so "long << PAGE_SHIFT" will overflow for PFNs above 4GB. Due to this issue, some Linux 32-PAE distros, running as guests on Hyper-V, with 5GB memory assigned, can't load the netvsc driver successfully and hence the synthetic network device can't work (we can use the kernel parameter mem=3000M to work around the issue). Cast pte_pfn() to phys_addr_t before shifting. Fixes: "commit d7656534: x86, mm: Create slow_virt_to_phys()" Signed-off-by:
Dexuan Cui <decui@microsoft.com> Cc: K. Y. Srinivasan <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: gregkh@linuxfoundation.org Cc: linux-mm@kvack.org Cc: olaf@aepfle.de Cc: apw@canonical.com Cc: jasowang@redhat.com Cc: dave.hansen@intel.com Cc: riel@redhat.com Link: http://lkml.kernel.org/r/1414580017-27444-1-git-send-email-decui@microsoft.comSigned-off-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
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jens stein authored
commit b2a9601c upstream. commit c675949e Author: Jani Nikula <jani.nikula@intel.com> Date: Wed Apr 9 11:31:37 2014 +0300 drm/i915: do not setup backlight if not available according to VBT prevents backlight setup on Macbook 2,1. Apply quirk to ignore the VBT check so backlight is set up properly. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=81438Signed-off-by:
Jens Stein Jørgensen <jens.s.stein@gmail.com> Signed-off-by:
Jani Nikula <jani.nikula@intel.com> Signed-off-by:
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Ian Abbott authored
commit 238b5ad8 upstream. As a follow-up to commit 6cab7a37 ("staging: comedi: (regression) channel list must be set for COMEDI_CMD ioctl"), Hartley Sweeten pointed out another couple of bugs stemming from commit 6cab7a37 ("staging: comedi: comedi_fops: introduce __comedi_get_user_chanlist()"). Firstly, `do_cmdtest_ioctl()` never frees the kernel copy of the user chanlist allocated by `__comedi_get_user_chanlist()`, so that memory is leaked. Fix it by freeing the allocated kernel memory pointed to by `cmd.chanlist` before that pointer is overwritten with its original pointer to user memory before `cmd` is copied back to user-space. Secondly, if `__comedi_get_user_chanlist()` returns an error, `cmd->chanlist` is left unchanged and in fact will be a pointer to user memory. This causes `do_cmd_ioctl()` to `goto cleanup` and call `do_become_nonbusy()` which would attempt to free the memory pointed to by the user-space pointer. Fix it by setting `cmd->chanlist` to NULL at the start of `__comedi_get_user_chanlist()`. Fixes: c6cd0eef ("staging: comedi: comedi_fops: introduce __comedi_get_user_chanlist()") Reported-by:
H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by:
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Will Deacon authored
commit ce9ec37b upstream. When unmapping a range of pages in zap_pte_range, the page being unmapped is added to an mmu_gather_batch structure for asynchronous freeing. If we run out of space in the batch structure before the range has been completely unmapped, then we break out of the loop, force a TLB flush and free the pages that we have batched so far. If there are further pages to unmap, then we resume the loop where we left off. Unfortunately, we forget to update addr when we break out of the loop, which causes us to truncate the range being invalidated as the end address is exclusive. When we re-enter the loop at the same address, the page has already been freed and the pte_present test will fail, meaning that we do not reconsider the address for invalidation. This patch fixes the problem by incrementing addr by the PAGE_SIZE before breaking out of the loop on batch failure. Signed-off-by:
Will Deacon <will.deacon@arm.com> Signed-off-by:
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Alex Deucher authored
commit 8c3e4347 upstream. 0x4c6e is a secondary device id so should not be used by the driver. Noticed-by:
Mark Kettenis <mark.kettenis@xs4all.nl> Signed-off-by:
Alex Deucher <alexander.deucher@amd.com> Signed-off-by:
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Alex Deucher authored
commit 72b3f918 upstream. - bapm seems to cause CPU stuck messages so disable it. - nb dpm seems to prevent GPU dpm from getting enabled, so disable it. bug: https://bugs.freedesktop.org/show_bug.cgi?id=85107Signed-off-by:
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Alex Deucher authored
commit 6e909f74 upstream. Add a module paramter to enable bapm on APUs. It's disabled by default on certain APUs due to stability issues. This option makes it easier to test and to enable it on systems that are stable. bug: https://bugzilla.kernel.org/show_bug.cgi?id=81021Signed-off-by:
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Michel Dänzer authored
commit e5a5fd4d upstream. Should avoid kmalloc failures due to large number of array entries. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=81991Reviewed-by:
Dave Airlie <airlied@redhat.com> Reviewed-by:
Christian König <christian.koenig@amd.com> Signed-off-by:
Michel Dänzer <michel.daenzer@amd.com> Signed-off-by:
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Alex Deucher authored
commit 6fa45593 upstream. Causes problems on some boards. bug: https://bugs.freedesktop.org/show_bug.cgi?id=82889Signed-off-by:
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Dmitry Kasatkin authored
commit 3b1deef6 upstream. evm_inode_setxattr() can be called with no value. The function does not check the length so that following command can be used to produce the kernel oops: setfattr -n security.evm FOO. This patch fixes it. Changes in v3: * there is no reason to return different error codes for EVM_XATTR_HMAC and non EVM_XATTR_HMAC. Remove unnecessary test then. Changes in v2: * testing for validity of xattr type [ 1106.396921] BUG: unable to handle kernel NULL pointer dereference at (null) [ 1106.398192] IP: [<ffffffff812af7b8>] evm_inode_setxattr+0x2a/0x48 [ 1106.399244] PGD 29048067 PUD 290d7067 PMD 0 [ 1106.399953] Oops: 0000 [#1] SMP [ 1106.400020] Modules linked in: bridge stp llc evdev serio_raw i2c_piix4 button fuse [ 1106.400020] CPU: 0 PID: 3635 Comm: setxattr Not tainted 3.16.0-kds+ #2936 [ 1106.400020] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1106.400020] task: ffff8800291a0000 ti: ffff88002917c000 task.ti: ffff88002917c000 [ 1106.400020] RIP: 0010:[<ffffffff812af7b8>] [<ffffffff812af7b8>] evm_inode_setxattr+0x2a/0x48 [ 1106.400020] RSP: 0018:ffff88002917fd50 EFLAGS: 00010246 [ 1106.400020] RAX: 0000000000000000 RBX: ffff88002917fdf8 RCX: 0000000000000000 [ 1106.400020] RDX: 0000000000000000 RSI: ffffffff818136d3 RDI: ffff88002917fdf8 [ 1106.400020] RBP: ffff88002917fd68 R08: 0000000000000000 R09: 00000000003ec1df [ 1106.400020] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8800438a0a00 [ 1106.400020] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 1106.400020] FS: 00007f7dfa7d7740(0000) GS:ffff88005da00000(0000) knlGS:0000000000000000 [ 1106.400020] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1106.400020] CR2: 0000000000000000 CR3: 000000003763e000 CR4: 00000000000006f0 [ 1106.400020] Stack: [ 1106.400020] ffff8800438a0a00 ffff88002917fdf8 0000000000000000 ffff88002917fd98 [ 1106.400020] ffffffff812a1030 ffff8800438a0a00 ffff88002917fdf8 0000000000000000 [ 1106.400020] 0000000000000000 ffff88002917fde0 ffffffff8116d08a ffff88002917fdc8 [ 1106.400020] Call Trace: [ 1106.400020] [<ffffffff812a1030>] security_inode_setxattr+0x5d/0x6a [ 1106.400020] [<ffffffff8116d08a>] vfs_setxattr+0x6b/0x9f [ 1106.400020] [<ffffffff8116d1e0>] setxattr+0x122/0x16c [ 1106.400020] [<ffffffff811687e8>] ? mnt_want_write+0x21/0x45 [ 1106.400020] [<ffffffff8114d011>] ? __sb_start_write+0x10f/0x143 [ 1106.400020] [<ffffffff811687e8>] ? mnt_want_write+0x21/0x45 [ 1106.400020] [<ffffffff811687c0>] ? __mnt_want_write+0x48/0x4f [ 1106.400020] [<ffffffff8116d3e6>] SyS_setxattr+0x6e/0xb0 [ 1106.400020] [<ffffffff81529da9>] system_call_fastpath+0x16/0x1b [ 1106.400020] Code: c3 0f 1f 44 00 00 55 48 89 e5 41 55 49 89 d5 41 54 49 89 fc 53 48 89 f3 48 c7 c6 d3 36 81 81 48 89 df e8 18 22 04 00 85 c0 75 07 <41> 80 7d 00 02 74 0d 48 89 de 4c 89 e7 e8 5a fe ff ff eb 03 83 [ 1106.400020] RIP [<ffffffff812af7b8>] evm_inode_setxattr+0x2a/0x48 [ 1106.400020] RSP <ffff88002917fd50> [ 1106.400020] CR2: 0000000000000000 [ 1106.428061] ---[ end trace ae08331628ba3050 ]--- Reported-by:
Dmitry Kasatkin <d.kasatkin@samsung.com> Signed-off-by:
Mimi Zohar <zohar@linux.vnet.ibm.com> Signed-off-by:
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Dmitry Kasatkin authored
commit a48fda9d upstream. ima_inode_setxattr() can be called with no value. Function does not check the length so that following command can be used to produce kernel oops: setfattr -n security.ima FOO. This patch fixes it. Changes in v3: * for stable reverted "allow setting hash only in fix or log mode" It will be a separate patch. Changes in v2: * testing validity of xattr type * allow setting hash only in fix or log mode (Mimi) [ 261.562522] BUG: unable to handle kernel NULL pointer dereference at (null) [ 261.564109] IP: [<ffffffff812af272>] ima_inode_setxattr+0x3e/0x5a [ 261.564109] PGD 3112f067 PUD 42965067 PMD 0 [ 261.564109] Oops: 0000 [#1] SMP [ 261.564109] Modules linked in: bridge stp llc evdev serio_raw i2c_piix4 button fuse [ 261.564109] CPU: 0 PID: 3299 Comm: setxattr Not tainted 3.16.0-kds+ #2924 [ 261.564109] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 261.564109] task: ffff8800428c2430 ti: ffff880042be0000 task.ti: ffff880042be0000 [ 261.564109] RIP: 0010:[<ffffffff812af272>] [<ffffffff812af272>] ima_inode_setxattr+0x3e/0x5a [ 261.564109] RSP: 0018:ffff880042be3d50 EFLAGS: 00010246 [ 261.564109] RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000015 [ 261.564109] RDX: 0000001500000000 RSI: 0000000000000000 RDI: ffff8800375cc600 [ 261.564109] RBP: ffff880042be3d68 R08: 0000000000000000 R09: 00000000004d6256 [ 261.564109] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88002149ba00 [ 261.564109] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 261.564109] FS: 00007f6c1e219740(0000) GS:ffff88005da00000(0000) knlGS:0000000000000000 [ 261.564109] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 261.564109] CR2: 0000000000000000 CR3: 000000003b35a000 CR4: 00000000000006f0 [ 261.564109] Stack: [ 261.564109] ffff88002149ba00 ffff880042be3df8 0000000000000000 ffff880042be3d98 [ 261.564109] ffffffff812a101b ffff88002149ba00 ffff880042be3df8 0000000000000000 [ 261.564109] 0000000000000000 ffff880042be3de0 ffffffff8116d08a ffff880042be3dc8 [ 261.564109] Call Trace: [ 261.564109] [<ffffffff812a101b>] security_inode_setxattr+0x48/0x6a [ 261.564109] [<ffffffff8116d08a>] vfs_setxattr+0x6b/0x9f [ 261.564109] [<ffffffff8116d1e0>] setxattr+0x122/0x16c [ 261.564109] [<ffffffff811687e8>] ? mnt_want_write+0x21/0x45 [ 261.564109] [<ffffffff8114d011>] ? __sb_start_write+0x10f/0x143 [ 261.564109] [<ffffffff811687e8>] ? mnt_want_write+0x21/0x45 [ 261.564109] [<ffffffff811687c0>] ? __mnt_want_write+0x48/0x4f [ 261.564109] [<ffffffff8116d3e6>] SyS_setxattr+0x6e/0xb0 [ 261.564109] [<ffffffff81529da9>] system_call_fastpath+0x16/0x1b [ 261.564109] Code: 48 89 f7 48 c7 c6 58 36 81 81 53 31 db e8 73 27 04 00 85 c0 75 28 bf 15 00 00 00 e8 8a a5 d9 ff 84 c0 75 05 83 cb ff eb 15 31 f6 <41> 80 7d 00 03 49 8b 7c 24 68 40 0f 94 c6 e8 e1 f9 ff ff 89 d8 [ 261.564109] RIP [<ffffffff812af272>] ima_inode_setxattr+0x3e/0x5a [ 261.564109] RSP <ffff880042be3d50> [ 261.564109] CR2: 0000000000000000 [ 261.599998] ---[ end trace 39a89a3fc267e652 ]--- Reported-by:
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Takashi Iwai authored
commit 317168d0 upstream. In compat mode, we copy each field of snd_pcm_status struct but don't touch the reserved fields, and this leaves uninitialized values there. Meanwhile the native ioctl does zero-clear the whole structure, so we should follow the same rule in compat mode, too. Reported-by:
Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
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Christoph Hellwig authored
commit e999dbc2 upstream. This reverts commit fb3ccb5d. SCSI-2/SPI actually needs the tagged/untagged flag in the request to work properly. Revert this patch and add a follow on to set it in the right place. Signed-off-by:
Christoph Hellwig <hch@lst.de> Reviewed-by:
Martin K. Petersen <martin.petersen@oracle.com> Acked-by:
Jens Axboe <axboe@kernel.dk> Reported-by:
Meelis Roos <mroos@linux.ee> Tested-by:
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Imre Deak authored
commit 94fb823f upstream. If a device's dev_pm_ops::freeze callback fails during the QUIESCE phase, we don't rollback things correctly calling the thaw and complete callbacks. This could leave some devices in a suspended state in case of an error during resuming from hibernation. Signed-off-by:
Imre Deak <imre.deak@intel.com> Signed-off-by:
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Imre Deak authored
commit 246ef766 upstream. If an asynchronous suspend_late or freeze_late callback fails during the SUSPEND, FREEZE or QUIESCE phases, we don't propagate the corresponding error correctly, in effect ignoring the error and continuing the suspend-to-ram/hibernation. During suspend-to-ram this could leave some devices without a valid saved context, leading to a failure to reinitialize them during resume. During hibernation this could leave some devices active interfeering with the creation / restoration of the hibernation image. Also this could leave the corresponding devices without a valid saved context and failure to reinitialize them during resume. Fixes: de377b39 (PM / sleep: Asynchronous threads for suspend_late) Signed-off-by:
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Christian Vogel authored
commit d1d0b6b6 upstream. snd_bebob_stream_check_internal_clock() may get an id from saffirepro_both_clk_src_get (via clk_src->get()) that was uninitialized. a) make logic in saffirepro_both_clk_src_get explicit b) test if id used in snd_bebob_stream_check_internal_clock matches array size [fixed missing signed prefix to *_maps[] by tiwai] Signed-off-by:
Christian Vogel <vogelchr@vogel.cx> Reviewed-by:
Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by:
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Ville Syrjälä authored
commit f6a19066 upstream. Sometimes we seem to get utter garbage from DPCD reads. The resulting buffer is filled with the same byte, and the operation completed without errors. My HP ZR24w monitor seems particularly susceptible to this problem once it's gone into a sleep mode. The issue seems to happen only for the first AUX message that wakes the sink up. But as the first AUX read we often do is the DPCD receiver cap it does wreak a bit of havoc with subsequent link training etc. when the receiver cap bw/lane/etc. information is garbage. A sufficient workaround seems to be to perform a single byte dummy read before reading the actual data. I suppose that just wakes up the sink sufficiently and we can just throw away the returned data in case it's crap. DP_DPCD_REV seems like a sufficiently safe location to read here. Signed-off-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by:
Todd Previte <tprevite@gmail.com> Signed-off-by:
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Torsten Fleischer authored
commit 9680b60e upstream. The call of 'kfree(ci->hw_bank.regmap)' in ci_hdrc_remove() sometimes causes a kernel oops when removing the ci_hdrc module. Since there is no separate memory allocated for the ci->hw_bank.regmap array, there is no need to free it. Signed-off-by:
Torsten Fleischer <to-fleischer@t-online.de> Signed-off-by:
Peter Chen <peter.chen@freescale.com> Signed-off-by:
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Brian Silverman authored
commit 30a6b803 upstream. free_pi_state and exit_pi_state_list both clean up futex_pi_state's. exit_pi_state_list takes the hb lock first, and most callers of free_pi_state do too. requeue_pi doesn't, which means free_pi_state can free the pi_state out from under exit_pi_state_list. For example: task A | task B exit_pi_state_list | pi_state = | curr->pi_state_list->next | | futex_requeue(requeue_pi=1) | // pi_state is the same as | // the one in task A | free_pi_state(pi_state) | list_del_init(&pi_state->list) | kfree(pi_state) list_del_init(&pi_state->list) | Move the free_pi_state calls in requeue_pi to before it drops the hb locks which it's already holding. [ tglx: Removed a pointless free_pi_state() call and the hb->lock held debugging. The latter comes via a seperate patch ] Signed-off-by:
Brian Silverman <bsilver16384@gmail.com> Cc: austin.linux@gmail.com Cc: darren@dvhart.com Cc: peterz@infradead.org Link: http://lkml.kernel.org/r/1414282837-23092-1-git-send-email-bsilver16384@gmail.comSigned-off-by:
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Mathias Krause authored
commit 6891c450 upstream. If userland creates a timer without specifying a sigevent info, we'll create one ourself, using a stack local variable. Particularly will we use the timer ID as sival_int. But as sigev_value is a union containing a pointer and an int, that assignment will only partially initialize sigev_value on systems where the size of a pointer is bigger than the size of an int. On such systems we'll copy the uninitialized stack bytes from the timer_create() call to userland when the timer actually fires and we're going to deliver the signal. Initialize sigev_value with 0 to plug the stack info leak. Found in the PaX patch, written by the PaX Team. Fixes: 5a9fa730 ("posix-timers: kill ->it_sigev_signo and...") Signed-off-by:
Mathias Krause <minipli@googlemail.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Brad Spengler <spender@grsecurity.net> Cc: PaX Team <pageexec@freemail.hu> Link: http://lkml.kernel.org/r/1412456799-32339-1-git-send-email-minipli@googlemail.comSigned-off-by:
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Hans de Goede authored
commit 993b3a3f upstream. These models need i8042.notimeout, otherwise the touchpad will not work. BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=69731 BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1111138Signed-off-by:
Hans de Goede <hdegoede@redhat.com> Signed-off-by:
Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by:
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Jack Pham authored
commit 1200a82a upstream. On ISOC endpoints the last trb_pool entry used as a LINK TRB is not getting zeroed out correctly due to memset being called incorrectly and in the wrong place. If pool allocated from DMA was not zero-initialized to begin with this will result in the size and ctrl values being random garbage. Call memset correctly after assignment of the trb_link pointer. Fixes: f6bafc6a ("usb: dwc3: convert TRBs into bitshifts") Signed-off-by:
Jack Pham <jackp@codeaurora.org> Signed-off-by:
Felipe Balbi <balbi@ti.com> Signed-off-by:
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Emmanuel Grumbach authored
commit 1ffde699 upstream. This reverts commit aa11bbf3. This commit was causing connection issues and is not needed if IWL_MVM_RS_RSSI_BASED_INIT_RATE is set to false by default. Regardless of the issues mentioned above, this patch added the following WARNING: WARNING: CPU: 0 PID: 3946 at drivers/net/wireless/iwlwifi/mvm/tx.c:190 iwl_mvm_set_tx_params+0x60a/0x6f0 [iwlmvm]() Got an HT rate for a non data frame 0x8 CPU: 0 PID: 3946 Comm: wpa_supplicant Tainted: G O 3.17.0+ #6 Hardware name: LENOVO 20ANCTO1WW/20ANCTO1WW, BIOS GLET71WW (2.25 ) 07/02/2014 0000000000000009 ffffffff814fa911 ffff8804288db8f8 ffffffff81064f52 0000000000001808 ffff8804288db948 ffff88040add8660 ffff8804291b5600 0000000000000000 ffffffff81064fb7 ffffffffa07b73d0 0000000000000020 Call Trace: [<ffffffff814fa911>] ? dump_stack+0x41/0x51 [<ffffffff81064f52>] ? warn_slowpath_common+0x72/0x90 [<ffffffff81064fb7>] ? warn_slowpath_fmt+0x47/0x50 [<ffffffffa07a39ea>] ? iwl_mvm_set_tx_params+0x60a/0x6f0 [iwlmvm] [<ffffffffa07a3cf8>] ? iwl_mvm_tx_skb+0x48/0x3c0 [iwlmvm] [<ffffffffa079cb9b>] ? iwl_mvm_mac_tx+0x7b/0x180 [iwlmvm] [<ffffffffa0746ce9>] ? __ieee80211_tx+0x2b9/0x3c0 [mac80211] [<ffffffffa07492f3>] ? ieee80211_tx+0xb3/0x100 [mac80211] [<ffffffffa0749c49>] ? ieee80211_subif_start_xmit+0x459/0xca0 [mac80211] [<ffffffff814116e7>] ? dev_hard_start_xmit+0x337/0x5f0 [<ffffffff81430d46>] ? sch_direct_xmit+0x96/0x1f0 [<ffffffff81411ba3>] ? __dev_queue_xmit+0x203/0x4f0 [<ffffffff8142f670>] ? ether_setup+0x70/0x70 [<ffffffff814e96a1>] ? packet_sendmsg+0xf81/0x1110 [<ffffffff8140625c>] ? skb_free_datagram+0xc/0x40 [<ffffffff813f7538>] ? sock_sendmsg+0x88/0xc0 [<ffffffff813f7274>] ? move_addr_to_kernel.part.20+0x14/0x60 [<ffffffff811c47c2>] ? __inode_wait_for_writeback+0x62/0xb0 [<ffffffff813f7a91>] ? SYSC_sendto+0xf1/0x180 [<ffffffff813f88f9>] ? __sys_recvmsg+0x39/0x70 [<ffffffff8150066d>] ? system_call_fastpath+0x1a/0x1f ---[ end trace cc19a150d311fc63 ]--- which was reported here: https://bugzilla.kernel.org/show_bug.cgi?id=85691Signed-off-by:
Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by:
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Emmanuel Grumbach authored
commit a0855054 upstream. When mac80211 wants to ensure that a frame is sent, it calls the flush() callback. Until now, iwldvm implemented this by waiting that all the frames are sent (ACKed or timeout). In case of weak signal, this can take a significant amount of time, delaying the next connection (in case of roaming). Many users have reported that the flush would take too long leading to the following error messages to be printed: iwlwifi 0000:03:00.0: fail to flush all tx fifo queues Q 2 iwlwifi 0000:03:00.0: Current SW read_ptr 161 write_ptr 201 iwl data: 00000000: 00 00 00 00 00 00 00 00 fe ff 01 00 00 00 00 00 [snip] iwlwifi 0000:03:00.0: FH TRBs(0) = 0x00000000 [snip] iwlwifi 0000:03:00.0: Q 0 is active and mapped to fifo 3 ra_tid 0x0000 [9,9] [snip] Instead of waiting for these packets, simply drop them. This significantly improves the responsiveness of the network. Note that all the queues are flushed, but the VO one. This is not typically used by the applications and it likely contains management frames that are useful for connection or roaming. This bug is tracked here: https://bugzilla.kernel.org/show_bug.cgi?id=56581 But it is duplicated in distributions' trackers. A simple search in Ubuntu's database led to these bugs: https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1270808 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1305406 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1356236 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1360597 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1361809 Depends-on: 77be2c54 ("mac80211: add vif to flush call") Signed-off-by:
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Emmanuel Grumbach authored
commit 9180ac50 upstream. The LTR is the handshake between the device and the root complex about the latency allowed when the bus exits power save. This configuration was missing and this led to high latency in the link power up. The end user could experience high latency in the network because of this. Signed-off-by:
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