syzbot


INFO: task hung in loop_probe

Status: auto-closed as invalid on 2020/03/03 10:51
Reported-by: syzbot+13fbe14f8fe5bc45fdc8@syzkaller.appspotmail.com
First crash: 2111d, last: 1683d
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 INFO: task hung in loop_probe 4 1674d 1880d 0/1 auto-closed as invalid on 2020/03/12 11:48
android-49 INFO: task hung in loop_probe 14 1813d 1887d 0/3 auto-closed as invalid on 2019/10/25 08:49

Sample crash report:
ip6_tunnel:  xmit: Local address not yet configured!
ip6_tunnel:  xmit: Local address not yet configured!
ip6_tunnel: I xmit: Local address not yet configured!
ip6_tunnel:  xmit: Local address not yet configured!
ip6_tunnel:  xmit: Local address not yet configured!
INFO: task syz-executor.2:1852 blocked for more than 140 seconds.
      Not tainted 4.14.151+ #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.2  D25312  1852      1 0x00000004
Call Trace:
 schedule+0x92/0x1c0 kernel/sched/core.c:3498
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3556
 __mutex_lock_common kernel/locking/mutex.c:833 [inline]
 __mutex_lock+0x595/0x13e0 kernel/locking/mutex.c:893
 loop_probe+0x73/0x180 drivers/block/loop.c:1963
 kobj_lookup+0x226/0x410 drivers/base/map.c:124
 get_gendisk+0x36/0x240 block/genhd.c:785
 __blkdev_get+0x345/0xf90 fs/block_dev.c:1451
 blkdev_get+0x97/0x8b0 fs/block_dev.c:1612
 blkdev_open+0x1cc/0x250 fs/block_dev.c:1770
 do_dentry_open+0x44e/0xe20 fs/open.c:789
 vfs_open+0x105/0x230 fs/open.c:903
 do_last fs/namei.c:3539 [inline]
 path_openat+0xb6c/0x2be0 fs/namei.c:3681
 do_filp_open+0x1a1/0x280 fs/namei.c:3715
 do_sys_open+0x2ca/0x590 fs/open.c:1096
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x413f90
RSP: 002b:00007ffc72b4f628 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 000000000006a4e1 RCX: 0000000000413f90
RDX: 00007ffc72b4f6ba RSI: 0000000000000002 RDI: 00007ffc72b4f6b0
RBP: 0000000000000666 R08: 0000000000000000 R09: 000000000000000a
R10: 0000000000000075 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc72b4f660 R14: 000000000006a1b6 R15: 00007ffc72b4f670
INFO: task syz-executor.0:7052 blocked for more than 140 seconds.
      Not tainted 4.14.151+ #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0  D25312  7052      1 0x00000004
Call Trace:
 schedule+0x92/0x1c0 kernel/sched/core.c:3498
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3556
 __mutex_lock_common kernel/locking/mutex.c:833 [inline]
 __mutex_lock+0x595/0x13e0 kernel/locking/mutex.c:893
 __blkdev_get+0xf3/0xf90 fs/block_dev.c:1457
 blkdev_get+0x97/0x8b0 fs/block_dev.c:1612
 blkdev_open+0x1cc/0x250 fs/block_dev.c:1770
 do_dentry_open+0x44e/0xe20 fs/open.c:789
 vfs_open+0x105/0x230 fs/open.c:903
 do_last fs/namei.c:3539 [inline]
 path_openat+0xb6c/0x2be0 fs/namei.c:3681
 do_filp_open+0x1a1/0x280 fs/namei.c:3715
 do_sys_open+0x2ca/0x590 fs/open.c:1096
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x413f90
RSP: 002b:00007ffd6f0c54a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 000000000006a2ec RCX: 0000000000413f90
RDX: 00007ffd6f0c553a RSI: 0000000000000002 RDI: 00007ffd6f0c5530
RBP: 00000000000004ed R08: 0000000000000000 R09: 000000000000000a
R10: 0000000000000075 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd6f0c54e0 R14: 000000000006a2b0 R15: 00007ffd6f0c54f0
INFO: task syz-executor.5:11174 blocked for more than 140 seconds.
      Not tainted 4.14.151+ #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.5  D25312 11174      1 0x00000004
Call Trace:
 schedule+0x92/0x1c0 kernel/sched/core.c:3498
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3556
 __mutex_lock_common kernel/locking/mutex.c:833 [inline]
 __mutex_lock+0x595/0x13e0 kernel/locking/mutex.c:893
 lo_open+0x19/0xb0 drivers/block/loop.c:1624
 __blkdev_get+0x267/0xf90 fs/block_dev.c:1472
 blkdev_get+0x97/0x8b0 fs/block_dev.c:1612
 blkdev_open+0x1cc/0x250 fs/block_dev.c:1770
 do_dentry_open+0x44e/0xe20 fs/open.c:789
 vfs_open+0x105/0x230 fs/open.c:903
 do_last fs/namei.c:3539 [inline]
 path_openat+0xb6c/0x2be0 fs/namei.c:3681
 do_filp_open+0x1a1/0x280 fs/namei.c:3715
 do_sys_open+0x2ca/0x590 fs/open.c:1096
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x413f90
RSP: 002b:00007ffc4b282b68 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 000000000006a295 RCX: 0000000000413f90
RDX: 00007ffc4b282bfa RSI: 0000000000000002 RDI: 00007ffc4b282bf0
RBP: 000000000000037e R08: 0000000000000000 R09: 000000000000000a
R10: 0000000000000075 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc4b282ba0 R14: 000000000006a16f R15: 00007ffc4b282bb0
INFO: task syz-executor.1:22093 blocked for more than 140 seconds.
      Not tainted 4.14.151+ #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1  D26672 22093  13896 0x00000004
Call Trace:
 schedule+0x92/0x1c0 kernel/sched/core.c:3498
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3556
 __mutex_lock_common kernel/locking/mutex.c:833 [inline]
 __mutex_lock+0x595/0x13e0 kernel/locking/mutex.c:893
 __blkdev_get+0xf3/0xf90 fs/block_dev.c:1457
 blkdev_get+0x97/0x8b0 fs/block_dev.c:1612
 blkdev_open+0x1cc/0x250 fs/block_dev.c:1770
 do_dentry_open+0x44e/0xe20 fs/open.c:789
 vfs_open+0x105/0x230 fs/open.c:903
 do_last fs/namei.c:3539 [inline]
 path_openat+0xb6c/0x2be0 fs/namei.c:3681
 do_filp_open+0x1a1/0x280 fs/namei.c:3715
 do_sys_open+0x2ca/0x590 fs/open.c:1096
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x413fb1
RSP: 002b:00007fd1c0c387a0 EFLAGS: 00000293 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 0000000000413fb1
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007fd1c0c38850
RBP: 000000000075bf20 R08: 000000000000000f R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 00007fd1c0c396d4
R13: 00000000004c9db2 R14: 00000000004e1b38 R15: 00000000ffffffff
INFO: task syz-executor.1:22102 blocked for more than 140 seconds.
      Not tainted 4.14.151+ #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1  D29248 22102  13896 0x00000004
Call Trace:
 schedule+0x92/0x1c0 kernel/sched/core.c:3498
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3556
 __mutex_lock_common kernel/locking/mutex.c:833 [inline]
 __mutex_lock+0x595/0x13e0 kernel/locking/mutex.c:893
 lo_open+0x19/0xb0 drivers/block/loop.c:1624
 __blkdev_get+0x963/0xf90 fs/block_dev.c:1537
 blkdev_get+0x97/0x8b0 fs/block_dev.c:1612
 blkdev_open+0x1cc/0x250 fs/block_dev.c:1770
 do_dentry_open+0x44e/0xe20 fs/open.c:789
 vfs_open+0x105/0x230 fs/open.c:903
 do_last fs/namei.c:3539 [inline]
 path_openat+0xb6c/0x2be0 fs/namei.c:3681
 do_filp_open+0x1a1/0x280 fs/namei.c:3715
 do_sys_open+0x2ca/0x590 fs/open.c:1096
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x413fb1
RSP: 002b:00007fd1c0c177a0 EFLAGS: 00000293 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 0000000000413fb1
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007fd1c0c17850
RBP: 000000000075bfc8 R08: 000000000000000f R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000293 R12: 00007fd1c0c186d4
R13: 00000000004c9db2 R14: 00000000004e1b38 R15: 00000000ffffffff
INFO: task syz-executor.4:22096 blocked for more than 140 seconds.
      Not tainted 4.14.151+ #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.4  D28704 22096  18880 0x00000004
Call Trace:
 schedule+0x92/0x1c0 kernel/sched/core.c:3498
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3556
 __mutex_lock_common kernel/locking/mutex.c:833 [inline]
 __mutex_lock+0x595/0x13e0 kernel/locking/mutex.c:893
 blkdev_reread_part+0x1b/0x40 block/ioctl.c:192
 loop_reread_partitions+0x7f/0x90 drivers/block/loop.c:614
 loop_set_status+0xbff/0x11f0 drivers/block/loop.c:1183
 loop_set_status64+0xa5/0x100 drivers/block/loop.c:1301
 lo_ioctl+0xd1/0x1a30 drivers/block/loop.c:1431
 __blkdev_driver_ioctl block/ioctl.c:297 [inline]
 blkdev_ioctl+0x8d0/0x1870 block/ioctl.c:594
 block_ioctl+0xd9/0x120 fs/block_dev.c:1881
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0xabe/0x1040 fs/ioctl.c:684
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45a087
RSP: 002b:00007f4d7ba999f8 EFLAGS: 00000202 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f4d7ba9a6d4 RCX: 000000000045a087
RDX: 00007f4d7ba99ab0 RSI: 0000000000004c04 RDI: 0000000000000007
RBP: 0000000000000003 R08: 0000000000000000 R09: 000000000000000a
R10: 0000000000000075 R11: 0000000000000202 R12: 0000000000000006
R13: 0000000000000006 R14: 0000000000000007 R15: 00000000ffffffff
INFO: task syz-executor.4:22100 blocked for more than 140 seconds.
      Not tainted 4.14.151+ #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.4  D28928 22100  18880 0x00000004
Call Trace:
 schedule+0x92/0x1c0 kernel/sched/core.c:3498
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3556
 __mutex_lock_common kernel/locking/mutex.c:833 [inline]
 __mutex_lock+0x595/0x13e0 kernel/locking/mutex.c:893
 __blkdev_get+0xf3/0xf90 fs/block_dev.c:1457
 blkdev_get+0x97/0x8b0 fs/block_dev.c:1612
 blkdev_open+0x1cc/0x250 fs/block_dev.c:1770
 do_dentry_open+0x44e/0xe20 fs/open.c:789
 vfs_open+0x105/0x230 fs/open.c:903
 do_last fs/namei.c:3539 [inline]
 path_openat+0xb6c/0x2be0 fs/namei.c:3681
 do_filp_open+0x1a1/0x280 fs/namei.c:3715
 do_sys_open+0x2ca/0x590 fs/open.c:1096
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x413fb1
RSP: 002b:00007f4d7ba789f0 EFLAGS: 00000293 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f4d7ba796d4 RCX: 0000000000413fb1
RDX: 00007f4d7ba78baa RSI: 0000000000000002 RDI: 00007f4d7ba78ba0
RBP: 0000000000000003 R08: 0000000000000000 R09: 000000000000000a
R10: 0000000000000075 R11: 0000000000000293 R12: 0000000000000006
R13: 0000000000000006 R14: 00007f4d7ba796d4 R15: 00000000ffffffff
INFO: task syz-executor.3:22099 blocked for more than 140 seconds.
      Not tainted 4.14.151+ #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.3  D29904 22099  19750 0x00000004
Call Trace:
 schedule+0x92/0x1c0 kernel/sched/core.c:3498
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3556
 __mutex_lock_common kernel/locking/mutex.c:833 [inline]
 __mutex_lock+0x595/0x13e0 kernel/locking/mutex.c:893
 loop_control_ioctl+0x183/0x310 drivers/block/loop.c:1997
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0xabe/0x1040 fs/ioctl.c:684
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45a219
RSP: 002b:00007fecb71fec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a219
RDX: 9999999999999999 RSI: 0000000000004c81 RDI: 0000000000000004
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fecb71ff6d4
R13: 00000000004c6403 R14: 00000000004db7a8 R15: 00000000ffffffff
INFO: task syz-executor.3:22108 blocked for more than 140 seconds.
      Not tainted 4.14.151+ #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.3  D30304 22108  19750 0x00000004
Call Trace:
 schedule+0x92/0x1c0 kernel/sched/core.c:3498
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3556
 __mutex_lock_common kernel/locking/mutex.c:833 [inline]
 __mutex_lock+0x595/0x13e0 kernel/locking/mutex.c:893
 loop_control_ioctl+0x71/0x310 drivers/block/loop.c:1983
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0xabe/0x1040 fs/ioctl.c:684
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45a219
RSP: 002b:00007fecb71bcc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a219
RDX: 9999999999999999 RSI: 0000000000004c81 RDI: 0000000000000004
RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fecb71bd6d4
R13: 00000000004c6403 R14: 00000000004db7a8 R15: 00000000ffffffff
INFO: task blkid:22104 blocked for more than 140 seconds.
      Not tainted 4.14.151+ #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
blkid           D27808 22104  18503 0x00000004
Call Trace:
 schedule+0x92/0x1c0 kernel/sched/core.c:3498
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3556
 __mutex_lock_common kernel/locking/mutex.c:833 [inline]
 __mutex_lock+0x595/0x13e0 kernel/locking/mutex.c:893
 lo_open+0x19/0xb0 drivers/block/loop.c:1624
 __blkdev_get+0x963/0xf90 fs/block_dev.c:1537
 blkdev_get+0x97/0x8b0 fs/block_dev.c:1612
 blkdev_open+0x1cc/0x250 fs/block_dev.c:1770
 do_dentry_open+0x44e/0xe20 fs/open.c:789
 vfs_open+0x105/0x230 fs/open.c:903
 do_last fs/namei.c:3539 [inline]
 path_openat+0xb6c/0x2be0 fs/namei.c:3681
 do_filp_open+0x1a1/0x280 fs/namei.c:3715
 do_sys_open+0x2ca/0x590 fs/open.c:1096
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x7f66e1e5f120
RSP: 002b:00007ffe60d79e78 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f66e1e5f120
RDX: 00007ffe60d7af41 RSI: 0000000000000000 RDI: 00007ffe60d7af41
RBP: 0000000000000000 R08: 0000000000000078 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000a81030
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000005

Showing all locks held in the system:
1 lock held by khungtaskd/23:
 #0:  (tasklist_lock){.+.+}, at: [<0000000091a807ba>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4544
2 locks held by getty/1762:
 #0:  (&tty->ldisc_sem){++++}, at: [<00000000ec54ef79>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284
 #1:  (&ldata->atomic_read_lock){+.+.}, at: [<00000000047f6587>] n_tty_read+0x1f7/0x1700 drivers/tty/n_tty.c:2156
1 lock held by syz-executor.2/1852:
 #0:  (loop_index_mutex){+.+.}, at: [<000000006afeb0df>] loop_probe+0x73/0x180 drivers/block/loop.c:1963
1 lock held by syz-executor.0/7052:
 #0:  (&bdev->bd_mutex){+.+.}, at: [<000000005b155e75>] __blkdev_get+0xf3/0xf90 fs/block_dev.c:1457
2 locks held by syz-executor.5/11174:
 #0:  (&bdev->bd_mutex){+.+.}, at: [<000000005b155e75>] __blkdev_get+0xf3/0xf90 fs/block_dev.c:1457
 #1:  (loop_index_mutex){+.+.}, at: [<00000000d0317562>] lo_open+0x19/0xb0 drivers/block/loop.c:1624
1 lock held by syz-executor.1/22093:
 #0:  (&bdev->bd_mutex){+.+.}, at: [<000000005b155e75>] __blkdev_get+0xf3/0xf90 fs/block_dev.c:1457
2 locks held by syz-executor.1/22102:
 #0:  (&bdev->bd_mutex){+.+.}, at: [<000000005b155e75>] __blkdev_get+0xf3/0xf90 fs/block_dev.c:1457
 #1:  (loop_index_mutex){+.+.}, at: [<00000000d0317562>] lo_open+0x19/0xb0 drivers/block/loop.c:1624
2 locks held by syz-executor.4/22096:
 #0:  (&lo->lo_ctl_mutex/1){+.+.}, at: [<00000000310d42e1>] lo_ioctl+0x86/0x1a30 drivers/block/loop.c:1404
 #1:  (&bdev->bd_mutex){+.+.}, at: [<00000000b54756cb>] blkdev_reread_part+0x1b/0x40 block/ioctl.c:192
1 lock held by syz-executor.4/22100:
 #0:  (&bdev->bd_mutex){+.+.}, at: [<000000005b155e75>] __blkdev_get+0xf3/0xf90 fs/block_dev.c:1457
2 locks held by syz-executor.3/22099:
 #0:  (loop_index_mutex){+.+.}, at: [<00000000972f9249>] loop_control_ioctl+0x71/0x310 drivers/block/loop.c:1983
 #1:  (&lo->lo_ctl_mutex#2){+.+.}, at: [<00000000c43e92cd>] loop_control_ioctl+0x183/0x310 drivers/block/loop.c:1997
1 lock held by syz-executor.3/22108:
 #0:  (loop_index_mutex){+.+.}, at: [<00000000972f9249>] loop_control_ioctl+0x71/0x310 drivers/block/loop.c:1983
2 locks held by blkid/22104:
 #0:  (&bdev->bd_mutex){+.+.}, at: [<000000005b155e75>] __blkdev_get+0xf3/0xf90 fs/block_dev.c:1457
 #1:  (loop_index_mutex){+.+.}, at: [<00000000d0317562>] lo_open+0x19/0xb0 drivers/block/loop.c:1624

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 23 Comm: khungtaskd Not tainted 4.14.151+ #0
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0xca/0x134 lib/dump_stack.c:53
 nmi_cpu_backtrace.cold+0x47/0x86 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x119/0x147 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline]
 watchdog+0x629/0xbe0 kernel/hung_task.c:274
 kthread+0x31f/0x430 kernel/kthread.c:232
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:404
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at pc 0xffffffff9c0a4e43

Crashes (30):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/11/04 10:50 android-4.14 6409e7e01d11 b35fad31 .config console log report ci-android-414-kasan-gce-root
2019/10/05 17:17 android-4.14 ed203b32ee7e f3f7d9c8 .config console log report ci-android-414-kasan-gce-root
2019/04/24 15:39 android-4.14 ffa22221c473 8e3c52b1 .config console log report ci-android-414-kasan-gce-root
2019/04/23 14:38 android-4.14 fde41616bce4 53199d6e .config console log report ci-android-414-kasan-gce-root
2019/04/19 22:20 android-4.14 cec361536f1e b0e8efcb .config console log report ci-android-414-kasan-gce-root
2019/04/18 17:31 android-4.14 d9a62b438b48 b0e8efcb .config console log report ci-android-414-kasan-gce-root
2019/04/05 06:34 android-4.14 b175f02b5457 e5d1b3ac .config console log report ci-android-414-kasan-gce-root
2019/03/21 22:46 android-4.14 cfbe30be85c4 dce6e62f .config console log report ci-android-414-kasan-gce-root
2019/03/17 18:27 android-4.14 8ed9bc6e6401 ba18afea .config console log report ci-android-414-kasan-gce-root
2019/03/14 06:20 android-4.14 8ed9bc6e6401 2881fc25 .config console log report ci-android-414-kasan-gce-root
2019/03/06 13:41 android-4.14 cef9f8d29c1e 05cf83bf .config console log report ci-android-414-kasan-gce-root
2019/03/01 03:42 android-4.14 0cc8f104f45a 09aeeba4 .config console log report ci-android-414-kasan-gce-root
2019/02/28 08:09 android-4.14 0cc8f104f45a 34ec456b .config console log report ci-android-414-kasan-gce-root
2019/02/06 22:11 android-4.14 ae77ce090bb4 d25487bc .config console log report ci-android-414-kasan-gce-root
2019/01/28 14:41 android-4.14 70014b13c28c 629c2a27 .config console log report ci-android-414-kasan-gce-root
2019/01/28 05:21 android-4.14 70014b13c28c c73f090a .config console log report ci-android-414-kasan-gce-root
2019/01/28 03:43 android-4.14 70014b13c28c c73f090a .config console log report ci-android-414-kasan-gce-root
2019/01/27 06:41 android-4.14 70014b13c28c c73f090a .config console log report ci-android-414-kasan-gce-root
2019/01/27 02:09 android-4.14 70014b13c28c c73f090a .config console log report ci-android-414-kasan-gce-root
2019/01/25 06:45 android-4.14 ca20dbf407cb bfab9cd8 .config console log report ci-android-414-kasan-gce-root
2018/12/07 08:36 android-4.14 23bc51816857 dcf836b1 .config console log report ci-android-414-kasan-gce-root
2018/12/05 04:05 android-4.14 d11d7f1ccfb1 f162ad97 .config console log report ci-android-414-kasan-gce-root
2018/12/04 10:30 android-4.14 d11d7f1ccfb1 6ad0ae61 .config console log report ci-android-414-kasan-gce-root
2018/11/02 08:53 android-4.14 4ed22187defd 1f38e9ae .config console log report ci-android-414-kasan-gce-root
2018/11/01 19:03 android-4.14 4ed22187defd 1f38e9ae .config console log report ci-android-414-kasan-gce-root
2018/10/24 01:06 android-4.14 ff26b00b484b a8292de9 .config console log report ci-android-414-kasan-gce-root
2018/10/22 19:49 android-4.14 a3ac63b18873 ecb386fe .config console log report ci-android-414-kasan-gce-root
2018/10/22 03:11 android-4.14 c556d1ffe528 ecb386fe .config console log report ci-android-414-kasan-gce-root
2018/09/06 03:04 android-4.14 b859aa7d7a0c 873745f2 .config console log report ci-android-414-kasan-gce-root
2018/09/02 09:37 android-4.14 47350a9f13c6 a4718693 .config console log report ci-android-414-kasan-gce-root
* Struck through repros no longer work on HEAD.