[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/1534413
Title:
Precise: lockup during fadvise syscall with POSIX_FADV_DONTNEED
Status in linux package in Ubuntu:
Expired
Bug description:
It was brought to my knowledge a kernel dump (3.2.0-79) with the
following stack trace:
"""
[14277.952072] usb 3-1: USB disconnect, device number 3
[15388.602790] NOHZ: local_softirq_pending 02
[15404.593795] NOHZ: local_softirq_pending 02
[15436.575787] NOHZ: local_softirq_pending 02
[15452.566802] NOHZ: local_softirq_pending 02
[15456.564528] NOHZ: local_softirq_pending 02
[15564.503842] NOHZ: local_softirq_pending 02
[15584.492538] NOHZ: local_softirq_pending 02
[15588.490302] NOHZ: local_softirq_pending 02
[15632.465563] NOHZ: local_softirq_pending 02
[15659.014629] NOHZ: local_softirq_pending 02
[15956.371298] INFO: task jsvc:57263 blocked for more than 120 seconds.
[15956.375347] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[15956.383487] jsvc D ffffffff81806200 0 57263 9495
0x00000000
[15956.383493] ffff883e849c3d08 0000000000000082 ffff883e849c3ca8
000000008104f624
[15956.383502] ffff883e849c3fd8 ffff883e849c3fd8 ffff883e849c3fd8
0000000000012800
[15956.383509] ffff881f72db9700 ffff883e0c4e2e00 ffff883e849c3cf8
7fffffffffffffff
[15956.383518] Call Trace:
[15956.383534] [<ffffffff81662c0f>] schedule+0x3f/0x60
[15956.383539] [<ffffffff8166324d>] schedule_timeout+0x29d/0x310
[15956.383547] [<ffffffff810388be>] ? physflat_send_IPI_mask+0xe/0x10
[15956.383554] [<ffffffff81032068>] ? native_smp_send_reschedule+0x48/0x60
[15956.383560] [<ffffffff8103ec29>] ? default_spin_lock_flags+0x9/0x10
[15956.383564] [<ffffffff81662a4f>] wait_for_common+0xdf/0x180
[15956.383572] [<ffffffff81060ac0>] ? try_to_wake_up+0x200/0x200
[15956.383576] [<ffffffff81662bcd>] wait_for_completion+0x1d/0x20
[15956.383585] [<ffffffff8108757e>] flush_work+0x2e/0x40
[15956.383589] [<ffffffff810838b0>] ? wake_up_worker+0x30/0x30
[15956.383593] [<ffffffff81087813>] schedule_on_each_cpu+0xc3/0x110
[15956.383602] [<ffffffff81127365>] lru_add_drain_all+0x15/0x20
[15956.383607] [<ffffffff8111e189>] sys_fadvise64_64+0x189/0x270
[15956.383610] [<ffffffff8111e27e>] sys_fadvise64+0xe/0x10
[15956.383619] [<ffffffff8166d2c2>] system_call_fastpath+0x16/0x1b
[15956.383622] Kernel panic - not syncing: hung_task: blocked tasks
[15956.388083] Pid: 178, comm: khungtaskd Tainted: G W
3.2.0-79-generic #115-Ubuntu
[15956.397273] Call Trace:
[15956.401783] [<ffffffff8164c005>] panic+0x91/0x1a4
[15956.406527] [<ffffffff810d97c2>] check_hung_task+0xb2/0xc0
[15956.411393] [<ffffffff810d98eb>]
check_hung_uninterruptible_tasks+0x11b/0x140
[15956.421117] [<ffffffff810d9910>] ?
check_hung_uninterruptible_tasks+0x140/0x140
[15956.431847] [<ffffffff810d995f>] watchdog+0x4f/0x60
[15956.437524] [<ffffffff8108b99c>] kthread+0x8c/0xa0
[15956.443145] [<ffffffff8166f434>] kernel_thread_helper+0x4/0x10
[15956.448830] [<ffffffff8108b910>] ? flush_kthread_worker+0xa0/0xa0
[15956.454700] [<ffffffff8166f430>] ? gs_change+0x13/0x13
"""
Analysis being made on the comments...
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