Package: linux-source Version: 3.16
Tee command crash is happening randomly in Linux kernel 3.16 taken from Debian. If the crash happens then the system is unusable until we trigger reboot. *Call trace:* *A*pr 7 10:29:06 kernel: [ 2762.372689] INFO: task tee:9363 blocked for more than 120 seconds. Apr 7 10:29:06 kernel: [ 2762.374253] Tainted: G O 3.16.7-ckt11 #1 Apr 7 10:29:06 kernel: [ 2762.375811] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Apr 7 10:29:06 kernel: [ 2762.377389] tee D ffff8800d2a3a828 0 9363 1 0x00000000 Apr 7 10:29:06 kernel: [ 2762.377396] ffff88040b104aa0 0000000000000082 0000000000012ec0 ffff8800d2a3a3d0 Apr 7 10:29:06 kernel: [ 2762.377400] 0000000000012ec0 ffff8803dbdb3fd8 0000000000012ec0 ffff8800d2a3a3d0 Apr 7 10:29:06 kernel: [ 2762.377404] ffff88040aef3800 ffff88040b317828 fffffffe00000002 ffff8800d2a3a3d0 Apr 7 10:29:06 kernel: [ 2762.377408] Call Trace: Apr 7 10:29:06 kernel: [ 2762.377420] [<ffffffff8158259a>] ? schedule_timeout+0x20a/0x270 Apr 7 10:29:06 kernel: [ 2762.377441] [<ffffffff811c28ce>] ? pipe_read+0x23e/0x2f0 Apr 7 10:29:06 kernel: [ 2762.377450] [<ffffffff81585f09>] ? ldsem_down_read+0x119/0x210 Apr 7 10:29:06 kernel: [ 2762.377457] [<ffffffff813cc02c>] ? tty_ldisc_ref_wait+0x1c/0x40 Apr 7 10:29:06 kernel: [ 2762.377461] [<ffffffff813c3ccc>] ? tty_write+0x7c/0x2b0 Apr 7 10:29:06 kernel: [ 2762.377467] [<ffffffff81286d9f>] ? security_file_permission+0x2f/0xd0 Apr 7 10:29:06 kernel: [ 2762.377470] [<ffffffff813c3f3a>] ? redirected_tty_write+0x3a/0xd0 Apr 7 10:29:06 kernel: [ 2762.377475] [<ffffffff811ba6af>] ? vfs_write+0xbf/0x200 Apr 7 10:29:06 kernel: [ 2762.377479] [<ffffffff811bac00>] ? SyS_write+0x50/0xb0 Apr 7 10:29:06 kernel: [ 2762.377484] [<ffffffff81586b0d>] ? system_call_fastpath+0x1a/0x1f Apr 7 10:29:06 kernel: [ 2762.377491] INFO: task java:9414 blocked for more than 120 seconds Apr 7 10:29:06 kernel: [ 2762.380640] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Apr 7 10:29:06 kernel: [ 2762.382256] java D ffff8803e7c70e38 0 9414 1 0x00000000 Apr 7 10:29:06 kernel: [ 2762.382260] ffff88040b6a0a20 0000000000000082 ffffffff81099f6c ffff8803e7c709e0 Apr 7 10:29:06 kernel: [ 2762.382264] 0000000000012ec0 ffff8800d1a93fd8 0000000000012ec0 ffff8803e7c709e0 Apr 7 10:29:06 kernel: [ 2762.382268] ffffffff8109a664 ffff88040b317828 ffffffff00000002 ffff8803e7c709e0 Apr 7 10:29:06 kernel: [ 2762.382271] Call Trace: Apr 7 10:29:06 kernel: [ 2762.382277] [<ffffffff81099f6c>] ? resched_task+0x2c/0xb0 Apr 7 10:29:06 kernel: [ 2762.382280] [<ffffffff8109a664>] ? ttwu_do_wakeup+0x14/0xc0 Apr 7 10:29:06 kernel: [ 2762.382285] [<ffffffff8158259a>] ? schedule_timeout+0x20a/0x270 Apr 7 10:29:06 kernel: [ 2762.382292] [<ffffffff810daa90>] ? get_futex_key+0x1d0/0x2c0 Apr 7 10:29:06 kernel: [ 2762.382297] [<ffffffff81585f09>] ? ldsem_down_read+0x119/0x210 Apr 7 10:29:06 kernel: [ 2762.382301] [<ffffffff813cc02c>] ? tty_ldisc_ref_wait+0x1c/0x40 Apr 7 10:29:06 kernel: [ 2762.382305] [<ffffffff813c592a>] ? tty_ioctl+0x2aa/0xb10 Apr 7 10:29:06 kernel: [ 2762.382311] [<ffffffff810f55ca>] ? from_kgid_munged+0xa/0x20 Apr 7 10:29:06 kernel: [ 2762.382316] [<ffffffff811bed80>] ? cp_new_stat+0x140/0x160 Apr 7 10:29:06 kernel: [ 2762.382322] [<ffffffff811cca93>] ? do_vfs_ioctl+0x83/0x500 Apr 7 10:29:06 kernel: [ 2762.382327] [<ffffffff811bf243>] ? SYSC_newfstat+0x23/0x30 Apr 7 10:29:06 kernel: [ 2762.382332] [<ffffffff811ccfb1>] ? SyS_ioctl+0xa1/0xc0 Apr 7 10:29:06 kernel: [ 2762.382337] [<ffffffff81586b0d>] ? system_call_fastpath+0x1a/0x1f Apr 7 10:29:06 kernel: [ 2762.382339] INFO: task tee:9365 blocked for more than 120 seconds. Apr 7 10:29:06 kernel: [ 2762.383973] Tainted: G O 3.16.7-ckt11 #1 Apr 7 10:29:06 kernel: [ 2762.385629] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Apr 7 10:29:06 kernel: [ 2762.387192] tee D ffff8803f760a5e8 0 9365 1 0x00000000 Apr 7 10:29:06 kernel: [ 2762.387196] ffff88040b6aa110 0000000000000086 0000000000012ec0 ffff8803f760a190 Apr 7 10:29:06 kernel: [ 2762.387199] 0000000000012ec0 ffff8803dbd43fd8 0000000000012ec0 ffff8803f760a190 Apr 7 10:29:06 kernel: [ 2762.387202] ffff88040aef3800 ffff88040b317828 fffffffd00000002 ffff8803f760a190 Apr 7 10:29:06 kernel: [ 2762.387206] Call Trace: Apr 7 10:29:06 kernel: [ 2762.387210] [<ffffffff8158259a>] ? schedule_timeout+0x20a/0x270 Apr 7 10:29:06 kernel: [ 2762.387214] [<ffffffff811c28ce>] ? pipe_read+0x23e/0x2f0 Apr 7 10:29:06 kernel: [ 2762.387218] [<ffffffff81585f09>] ? ldsem_down_read+0x119/0x210 Apr 7 10:29:06 kernel: [ 2762.387222] [<ffffffff813cc02c>] ? tty_ldisc_ref_wait+0x1c/0x40 Apr 7 10:29:06 kernel: [ 2762.387225] [<ffffffff813c3ccc>] ? tty_write+0x7c/0x2b0 Apr 7 10:29:06 kernel: [ 2762.387229] [<ffffffff81286d9f>] ? security_file_permission+0x2f/0xd0 Apr 7 10:29:06 kernel: [ 2762.387232] [<ffffffff813c3f3a>] ? redirected_tty_write+0x3a/0xd0 Apr 7 10:29:06 kernel: [ 2762.387235] [<ffffffff811ba6af>] ? vfs_write+0xbf/0x200 Apr 7 10:29:06 kernel: [ 2762.387239] [<ffffffff811bac00>] ? SyS_write+0x50/0xb0 Apr 7 10:29:06 kernel: [ 2762.387243] [<ffffffff81586b0d>] ? system_call_fastpath+0x1a/0x1f Apr 7 10:29:06 kernel: [ 2762.387272] INFO: task login:9602 blocked for more than 120 seconds. Apr 7 10:29:06 kernel: [ 2762.388828] Tainted: G O 3.16.7-ckt11 #1 Apr 7 10:29:06 kernel: [ 2762.390392] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Apr 7 10:29:06 kernel: [ 2762.391977] login D ffff8803cc5daf38 0 9602 1 0x00000002 Apr 7 10:29:06 kernel: [ 2762.391981] ffff88040b1053f0 0000000000000046 ffff8804205e9000 ffff8803cc5daae0 Apr 7 10:29:06 kernel: [ 2762.391984] 0000000000012ec0 ffff8803dbd47fd8 0000000000012ec0 ffff8803cc5daae0 Apr 7 10:29:06 kernel: [ 2762.391988] ffff8804053827c0 ffff88040b317828 7fffffffffffffff ffff88040b317830 Apr 7 10:29:06 kernel: [ 2762.391991] Call Trace: Apr 7 10:29:06 kernel: [ 2762.391996] [<ffffffff8158259a>] ? schedule_timeout+0x20a/0x270 Apr 7 10:29:06 kernel: [ 2762.392001] [<ffffffff8101d4b5>] ? sched_clock+0x5/0x10 Apr 7 10:29:06 kernel: [ 2762.392004] [<ffffffff8109a625>] ? check_preempt_curr+0x75/0xa0 Apr 7 10:29:06 kernel: [ 2762.392008] [<ffffffff8109a664>] ? ttwu_do_wakeup+0x14/0xc0 Apr 7 10:29:06 kernel: [ 2762.392012] [<ffffffff8109d7db>] ? try_to_wake_up+0xcb/0x300 Apr 7 10:29:06 kernel: [ 2762.392016] [<ffffffff815860f5>] ? ldsem_down_write+0xf5/0x1bc Apr 7 10:29:06 kernel: [ 2762.392021] [<ffffffff8158670c>] ? tty_ldisc_lock_pair_timeout+0x9c/0x120 Apr 7 10:29:06 kernel: [ 2762.392025] [<ffffffff813cc95e>] ? tty_ldisc_hangup+0xbe/0x220 Apr 7 10:29:06 kernel: [ 2762.392029] [<ffffffff813c3712>] ? __tty_hangup+0x2b2/0x440 Apr 7 10:29:06 kernel: [ 2762.392032] [<ffffffff813c544f>] ? disassociate_ctty+0x7f/0x290 Apr 7 10:29:06 kernel: [ 2762.392038] [<ffffffff8106e36f>] ? do_exit+0x7bf/0xa40 Apr 7 10:29:06 kernel: [ 2762.392043] [<ffffffff8106e66d>] ? do_group_exit+0x3d/0xa0 Apr 7 10:29:06 kernel: [ 2762.392048] [<ffffffff8106e6e7>] ? SyS_exit_group+0x17/0x20 Apr 7 10:29:06 kernel: [ 2762.392052] [<ffffffff81586b0d>] ? system_call_fastpath+0x1a/0x1f Regards, Saravanan N
