| TITLE: INFO: task hung in blkdev_put |
| |
| [ 244.447743] INFO: task syz-executor2:14507 blocked for more than 120 seconds. |
| [ 244.455167] Not tainted 4.9.40-ged32335 #11 |
| [ 244.460033] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. |
| [ 244.468151] syz-executor2 D27168 14507 3322 0x00000002 |
| [ 244.473864] ffff8801a51c4680 ffff88019c120fc0 ffff88019c1224c0 ffff88019f74c680 |
| [ 244.481834] ffff8801db321498 ffff8801c844f778 ffffffff8388f2bb 0000000000000000 |
| [ 244.489886] 0000000000000007 00ff8801a51c4680 ffff8801db321db0 ffff8801db321dd8 |
| [ 244.497869] Call Trace: |
| [ 244.500425] [<ffffffff8388f2bb>] ? __schedule+0x67b/0x1ba0 |
| [ 244.506100] [<ffffffff83890872>] schedule+0x92/0x1b0 |
| [ 244.511304] [<ffffffff838911e3>] schedule_preempt_disabled+0x13/0x20 |
| [ 244.517906] [<ffffffff838967f2>] mutex_lock_nested+0x312/0x870 |
| [ 244.523933] [<ffffffff8162804a>] ? blkdev_put+0x2a/0x550 |
| [ 244.529459] [<ffffffff838964e0>] ? mutex_lock_killable_nested+0x960/0x960 |
| [ 244.536445] [<ffffffff8166e69b>] ? locks_remove_file+0x32b/0x420 |
| [ 244.542690] [<ffffffff8163cab6>] ? fsnotify+0x86/0xf30 |
| [ 244.548048] [<ffffffff81628570>] ? blkdev_put+0x550/0x550 |
| [ 244.553641] [<ffffffff8162804a>] blkdev_put+0x2a/0x550 |
| [ 244.559031] [<ffffffff81628570>] ? blkdev_put+0x550/0x550 |
| [ 244.564630] [<ffffffff816285fb>] blkdev_close+0x8b/0xb0 |
| [ 244.570099] [<ffffffff8156ee2c>] __fput+0x28c/0x6e0 |
| [ 244.575170] [<ffffffff8156f305>] ____fput+0x15/0x20 |
| [ 244.580276] [<ffffffff81195e25>] task_work_run+0x115/0x190 |
| [ 244.585960] [<ffffffff8113cf76>] do_exit+0x826/0x2a40 |
| [ 244.622863] [<ffffffff81143658>] do_group_exit+0x108/0x320 |
| [ 244.628582] [<ffffffff8116628c>] get_signal+0x55c/0x1600 |
| [ 244.634086] [<ffffffff81052b97>] do_signal+0x87/0x1960 |
| [ 244.674628] [<ffffffff81003a35>] exit_to_usermode_loop+0xe5/0x130 |
| [ 244.680946] [<ffffffff81006350>] syscall_return_slowpath+0x1a0/0x1e0 |
| [ 244.687490] [<ffffffff838a0766>] entry_SYSCALL_64_fastpath+0xc4/0xc6 |
