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Subject3.7.1: BUG filp (Not tainted): Poison overwritten
Hi,
today I received the following.

[ 124.927854] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
[ 124.987250] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
[ 124.992228] pci_bus 0000:11: dev 00, created physical slot 1
[ 124.992448] acpiphp: Slot [1] registered
[ 233.258244] =============================================================================
[ 233.258247] BUG filp (Not tainted): Poison overwritten
[ 233.258248] -----------------------------------------------------------------------------

[ 233.258248] Disabling lock debugging due to kernel taint
[ 233.258250] INFO: 0xffff880401020000-0xffff88040102001d. First byte 0x20 instead of 0x6b
[ 233.258253] INFO: Slab 0xffffea0010040800 objects=21 used=21 fp=0x (null) flags=0x20000000004080
[ 233.258254] INFO: Object 0xffff880401020000 @offset=0 fp=0xffff880401021e00

[ 233.258255] Object ffff880401020000: 20 07 20 07 20 07 20 07 20 07 20 07 20 07 20 07 . . . . . . . .
[ 233.258256] Object ffff880401020010: 20 07 20 07 20 07 20 07 20 07 20 07 20 07 6b 6b . . . . . . .kk
[ 233.258257] Object ffff880401020020: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 233.258258] Object ffff880401020030: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 233.258259] Object ffff880401020040: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 233.258260] Object ffff880401020050: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 233.258260] Object ffff880401020060: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 233.258261] Object ffff880401020070: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 233.258262] Object ffff880401020080: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 233.258263] Object ffff880401020090: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 233.258264] Object ffff8804010200a0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 233.258265] Object ffff8804010200b0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 233.258265] Object ffff8804010200c0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 233.258266] Object ffff8804010200d0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 233.258267] Object ffff8804010200e0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 233.258268] Object ffff8804010200f0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 233.258269] Object ffff880401020100: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 233.258269] Object ffff880401020110: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
[ 233.258270] Object ffff880401020120: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk.
[ 233.258271] Redzone ffff880401020130: bb bb bb bb bb bb bb bb ........
[ 233.258272] Padding ffff880401020140: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZZZZZ
[ 233.258273] Padding ffff880401020150: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZZZZZ
[ 233.258274] Padding ffff880401020160: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZZZZZ
[ 233.258275] Padding ffff880401020170: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZZZZZ
[ 233.258277] Pid: 4440, comm: lspci Tainted: G B 3.7.1-default #30
[ 233.258277] Call Trace:
[ 233.258283] [<ffffffff8111085b>] ? print_section+0x38/0x3a
[ 233.258285] [<ffffffff81110d19>] print_trailer+0x105/0x10e
[ 233.258287] [<ffffffff81110fe9>] check_bytes_and_report+0xac/0xe5
[ 233.258290] [<ffffffff811110e1>] check_object+0xbf/0x1ad
[ 233.258291] [<ffffffff8111197f>] ? check_slab+0xaf/0xbd
[ 233.258294] [<ffffffff81119b04>] ? get_empty_filp+0x6f/0x155
[ 233.258297] [<ffffffff815d2a31>] alloc_debug_processing+0x61/0xed
[ 233.258299] [<ffffffff815d34dd>] __slab_alloc+0x344/0x3ba
[ 233.258301] [<ffffffff81119b04>] ? get_empty_filp+0x6f/0x155
[ 233.258303] [<ffffffff8100536b>] ? print_context_stack+0xa2/0xbe
[ 233.258305] [<ffffffff81119b04>] ? get_empty_filp+0x6f/0x155
[ 233.258307] [<ffffffff81119b04>] ? get_empty_filp+0x6f/0x155
[ 233.258309] [<ffffffff81112f50>] kmem_cache_alloc+0x50/0xb6
[ 233.258310] [<ffffffff81119b04>] get_empty_filp+0x6f/0x155
[ 233.258313] [<ffffffff81123e4b>] path_openat+0x35/0x313
[ 233.258315] [<ffffffff8112440b>] do_filp_open+0x33/0x81
[ 233.258317] [<ffffffff815d9b93>] ? _raw_spin_unlock+0x23/0x27
[ 233.258320] [<ffffffff8112e4cb>] ? __alloc_fd+0xe4/0xf6
[ 233.258322] [<ffffffff81118403>] do_sys_open+0x68/0xfa
[ 233.258323] [<ffffffff811184b1>] sys_open+0x1c/0x1e
[ 233.258325] [<ffffffff815da756>] system_call_fastpath+0x1a/0x1f
[ 233.258327] FIX filp: Restoring 0xffff880401020000-0xffff88040102001d=0x6b

[ 233.258327] FIX filp: Marking all objects used


If you need .config or full dmesg please let me know and please Cc: me, ideally.
Martin


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