INFO: trying to register non-static key in done

[syzbot]

Hello,

syzbot found the following crash on:

HEAD commit: ff33472c Linux 4.14.134
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=12f9c958600000
kernel config: https://syzkaller.appspot.com/x/.config?x=3559c2b3fb5dd4b2
dashboard link: https://syzkaller.appspot.com/bug?extid=c385e4b055c727dffbe6
compiler: gcc (GCC) 9.0.0 20181231 (experimental)

Unfortunately, I don't have any reproducer for this crash yet.

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+c385e4...@syzkaller.appspotmail.com

INFO: trying to register non-static key.
kobject: 'loop5' (ffff8880a4a962e0): kobject_uevent_env
the code is fine but needs lockdep annotation.
kobject: 'loop5' (ffff8880a4a962e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
turning off the locking correctness validator.
CPU: 1 PID: 20719 Comm: syz-executor.2 Not tainted 4.14.134 #29
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
__dump_stack /lib/dump_stack.c:17 [inline]
dump_stack+0x138/0x19c /lib/dump_stack.c:53
register_lock_class+0x2fd/0x1730 /kernel/locking/lockdep.c:768
Restarting kernel threads ...
__lock_acquire+0x147/0x45e0 /kernel/locking/lockdep.c:3374
binder: 20700:20724 ioctl 80404509 20000400 returned -22
done.
Restarting kernel threads ...
lock_acquire+0x16f/0x430 /kernel/locking/lockdep.c:3991
done.
flush_work+0xae/0x730 /kernel/workqueue.c:2881
kobject: 'loop5' (ffff8880a4a962e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4a962e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop5' (ffff8880a4a962e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4a962e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
__cancel_work_timer+0x2f0/0x480 /kernel/workqueue.c:2956
Restarting kernel threads ...
cancel_work_sync+0x18/0x20 /kernel/workqueue.c:2992
smc_close_active+0x68e/0xba0 /net/smc/smc_close.c:206
done.
smc_release+0x45a/0x630 /net/smc/af_smc.c:131
__sock_release+0xce/0x2b0 /net/socket.c:602
sock_close+0x1b/0x30 /net/socket.c:1139
__fput+0x275/0x7a0 /fs/file_table.c:210
____fput+0x16/0x20 /fs/file_table.c:244
Restarting kernel threads ...
task_work_run+0x114/0x190 /kernel/task_work.c:113
tracehook_notify_resume /./include/linux/tracehook.h:191 [inline]
exit_to_usermode_loop+0x1da/0x220 /arch/x86/entry/common.c:164
prepare_exit_to_usermode /arch/x86/entry/common.c:199 [inline]
syscall_return_slowpath /arch/x86/entry/common.c:270 [inline]
do_syscall_64+0x4bc/0x640 /arch/x86/entry/common.c:297
done.
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x459819
Restarting kernel threads ...
RSP: 002b:00007f07b38afc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000459819
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f07b38b06d4
R13: 00000000004f8ab2 R14: 00000000004d1810 R15: 00000000ffffffff
done.
kobject: 'loop3' (ffff8880a49e6aa0): kobject_uevent_env
kobject: 'loop3' (ffff8880a49e6aa0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop5' (ffff8880a4a962e0): kobject_uevent_env
Restarting kernel threads ...
IPVS: ftp: loaded support on port[0] = 21
kobject: 'loop5' (ffff8880a4a962e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
done.
kobject: 'lo' (ffff888054bcc670): kobject_add_internal: parent: 'net',
set: 'devices'
kobject: 'lo' (ffff888054bcc670): kobject_uevent_env
kobject: 'loop3' (ffff8880a49e6aa0): kobject_uevent_env
kobject: 'loop3' (ffff8880a49e6aa0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'lo' (ffff888054bcc670): fill_kobj_path: path
= '/devices/virtual/net/lo'
kobject: 'queues' (ffff8880939c1948): kobject_add_internal: parent: 'lo',
set: '<NULL>'
kobject: 'queues' (ffff8880939c1948): kobject_uevent_env
kobject: 'queues' (ffff8880939c1948): kobject_uevent_env: filter function
caused the event to drop!
kobject: 'rx-0' (ffff88807543e9d0): kobject_add_internal: parent: 'queues',
set: 'queues'
kobject: 'rx-0' (ffff88807543e9d0): kobject_uevent_env
kobject: 'rx-0' (ffff88807543e9d0): fill_kobj_path: path
= '/devices/virtual/net/lo/queues/rx-0'
kobject: 'tx-0' (ffff8880939c8018): kobject_add_internal: parent: 'queues',
set: 'queues'
kobject: 'tx-0' (ffff8880939c8018): kobject_uevent_env
kobject: 'tx-0' (ffff8880939c8018): fill_kobj_path: path
= '/devices/virtual/net/lo/queues/tx-0'
kobject: 'tunl0' (ffff88805cfc7330): kobject_add_internal: parent: 'net',
set: 'devices'
kobject: 'tunl0' (ffff88805cfc7330): kobject_uevent_env
kobject: 'tunl0' (ffff88805cfc7330): fill_kobj_path: path
= '/devices/virtual/net/tunl0'
kobject: 'queues' (ffff8880939c1248): kobject_add_internal:
parent: 'tunl0', set: '<NULL>'
kobject: 'queues' (ffff8880939c1248): kobject_uevent_env
kobject: 'loop4' (ffff8880a4a513a0): kobject_uevent_env
kobject: 'loop4' (ffff8880a4a513a0): fill_kobj_path: path
= '/devices/virtual/block/loop4'
Restarting kernel threads ... done.
kobject: 'queues' (ffff8880939c1248): kobject_uevent_env: filter function
caused the event to drop!
Restarting kernel threads ...
kobject: 'rx-0' (ffff88809090b310): kobject_add_internal: parent: 'queues',
set: 'queues'
done.
kobject: 'rx-0' (ffff88809090b310): kobject_uevent_env
kobject: 'loop5' (ffff8880a4a962e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4a962e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'rx-0' (ffff88809090b310): fill_kobj_path: path
= '/devices/virtual/net/tunl0/queues/rx-0'
binder: 20765:20771 unknown command 6491171
kobject: 'tx-0' (ffff8880a59782d8): kobject_add_internal: parent: 'queues',
set: 'queues'
binder: 20765:20771 ioctl c0306201 2000dfd0 returned -22
kobject: 'tx-0' (ffff8880a59782d8): kobject_uevent_env
kobject: 'tx-0' (ffff8880a59782d8): fill_kobj_path: path
= '/devices/virtual/net/tunl0/queues/tx-0'
kobject: 'gre0' (ffff88805c9108b0): kobject_add_internal: parent: 'net',
set: 'devices'
kobject: 'gre0' (ffff88805c9108b0): kobject_uevent_env
kobject: 'gre0' (ffff88805c9108b0): fill_kobj_path: path
= '/devices/virtual/net/gre0'
binder: 20765:20767 unknown command 4096
kobject: 'queues' (ffff888083e79448): kobject_add_internal: parent: 'gre0',
set: '<NULL>'
binder: 20765:20767 ioctl c0306201 20000040 returned -22
kobject: 'queues' (ffff888083e79448): kobject_uevent_env
kobject: 'queues' (ffff888083e79448): kobject_uevent_env: filter function
caused the event to drop!
kobject: 'rx-0' (ffff888099fc7010): kobject_add_internal: parent: 'queues',
set: 'queues'
kobject: 'rx-0' (ffff888099fc7010): kobject_uevent_env
kobject: 'rx-0' (ffff888099fc7010): fill_kobj_path: path
= '/devices/virtual/net/gre0/queues/rx-0'
kobject: 'tx-0' (ffff8880926bf018): kobject_add_internal: parent: 'queues',
set: 'queues'
kobject: 'tx-0' (ffff8880926bf018): kobject_uevent_env
kobject: 'tx-0' (ffff8880926bf018): fill_kobj_path: path
= '/devices/virtual/net/gre0/queues/tx-0'
kobject: 'gretap0' (ffff8880752b29f0): kobject_add_internal: parent: 'net',
set: 'devices'
kobject: 'gretap0' (ffff8880752b29f0): kobject_uevent_env
kobject: 'gretap0' (ffff8880752b29f0): fill_kobj_path: path
= '/devices/virtual/net/gretap0'
kobject: 'queues' (ffff888083e79148): kobject_add_internal:
parent: 'gretap0', set: '<NULL>'
kobject: 'queues' (ffff888083e79148): kobject_uevent_env
kobject: 'queues' (ffff888083e79148): kobject_uevent_env: filter function
caused the event to drop!
kobject: 'rx-0' (ffff88808f66a490): kobject_add_internal: parent: 'queues',
set: 'queues'
kobject: 'rx-0' (ffff88808f66a490): kobject_uevent_env
kobject: 'rx-0' (ffff88808f66a490): fill_kobj_path: path
= '/devices/virtual/net/gretap0/queues/rx-0'
kobject: 'tx-0' (ffff88808d084d58): kobject_add_internal: parent: 'queues',
set: 'queues'
kobject: 'tx-0' (ffff88808d084d58): kobject_uevent_env
kobject: 'tx-0' (ffff88808d084d58): fill_kobj_path: path
= '/devices/virtual/net/gretap0/queues/tx-0'
kobject: 'batman_adv' (ffff888028bd9c80): kobject_add_internal:
parent: 'gretap0', set: '<NULL>'
kobject: 'erspan0' (ffff88805ec6abf0): kobject_add_internal: parent: 'net',
set: 'devices'
kobject: 'erspan0' (ffff88805ec6abf0): kobject_uevent_env
kobject: 'erspan0' (ffff88805ec6abf0): fill_kobj_path: path
= '/devices/virtual/net/erspan0'
kobject: 'queues' (ffff888083e79a48): kobject_add_internal:
parent: 'erspan0', set: '<NULL>'
kobject: 'queues' (ffff888083e79a48): kobject_uevent_env
kobject: 'queues' (ffff888083e79a48): kobject_uevent_env: filter function
caused the event to drop!
kobject: 'rx-0' (ffff88808f66a910): kobject_add_internal: parent: 'queues',
set: 'queues'
kobject: 'rx-0' (ffff88808f66a910): kobject_uevent_env
kobject: 'rx-0' (ffff88808f66a910): fill_kobj_path: path
= '/devices/virtual/net/erspan0/queues/rx-0'
kobject: 'tx-0' (ffff88809a9c7058): kobject_add_internal: parent: 'queues',
set: 'queues'
kobject: 'tx-0' (ffff88809a9c7058): kobject_uevent_env
kobject: 'tx-0' (ffff88809a9c7058): fill_kobj_path: path
= '/devices/virtual/net/erspan0/queues/tx-0'
kobject: 'batman_adv' (ffff888028bd9980): kobject_add_internal:
parent: 'erspan0', set: '<NULL>'
kobject: 'ip_vti0' (ffff88805f102df0): kobject_add_internal: parent: 'net',
set: 'devices'
kobject: 'ip_vti0' (ffff88805f102df0): kobject_uevent_env
kobject: 'ip_vti0' (ffff88805f102df0): fill_kobj_path: path
= '/devices/virtual/net/ip_vti0'
kobject: 'queues' (ffff888083e79648): kobject_add_internal:
parent: 'ip_vti0', set: '<NULL>'
kobject: 'queues' (ffff888083e79648): kobject_uevent_env
kobject: 'queues' (ffff888083e79648): kobject_uevent_env: filter function
caused the event to drop!
kobject: 'rx-0' (ffff88808f66ad90): kobject_add_internal: parent: 'queues',
set: 'queues'
kobject: 'rx-0' (ffff88808f66ad90): kobject_uevent_env
kobject: 'rx-0' (ffff88808f66ad90): fill_kobj_path: path
= '/devices/virtual/net/ip_vti0/queues/rx-0'
kobject: 'tx-0' (ffff8880a8064d58): kobject_add_internal: parent: 'queues',
set: 'queues'
kobject: 'tx-0' (ffff8880a8064d58): kobject_uevent_env
kobject: 'tx-0' (ffff8880a8064d58): fill_kobj_path: path
= '/devices/virtual/net/ip_vti0/queues/tx-0'
kobject: 'ip6_vti0' (ffff888052ceae70): kobject_add_internal:
parent: 'net', set: 'devices'
kobject: 'ip6_vti0' (ffff888052ceae70): kobject_uevent_env
kobject: 'ip6_vti0' (ffff888052ceae70): fill_kobj_path: path
= '/devices/virtual/net/ip6_vti0'
kobject: 'queues' (ffff88809b45ce48): kobject_add_internal:
parent: 'ip6_vti0', set: '<NULL>'
kobject: 'queues' (ffff88809b45ce48): kobject_uevent_env
kobject: 'queues' (ffff88809b45ce48): kobject_uevent_env: filter function
caused the event to drop!
kobject: 'rx-0' (ffff88808e142910): kobject_add_internal: parent: 'queues',
set: 'queues'
kobject: 'rx-0' (ffff88808e142910): kobject_uevent_env
kobject: 'rx-0' (ffff88808e142910): fill_kobj_path: path
= '/devices/virtual/net/ip6_vti0/queues/rx-0'
kobject: 'tx-0' (ffff88808a933a18): kobject_add_internal: parent: 'queues',
set: 'queues'
kobject: 'tx-0' (ffff88808a933a18): kobject_uevent_env
kobject: 'tx-0' (ffff88808a933a18): fill_kobj_path: path
= '/devices/virtual/net/ip6_vti0/queues/tx-0'
kobject: 'sit0' (ffff88805fb485f0): kobject_add_internal: parent: 'net',
set: 'devices'
kobject: 'sit0' (ffff88805fb485f0): kobject_uevent_env
kobject: 'sit0' (ffff88805fb485f0): fill_kobj_path: path
= '/devices/virtual/net/sit0'
kobject: 'queues' (ffff8880a6d20548): kobject_add_internal: parent: 'sit0',
set: '<NULL>'
kobject: 'queues' (ffff8880a6d20548): kobject_uevent_env
kobject: 'loop4' (ffff8880a4a513a0): kobject_uevent_env
kobject: 'queues' (ffff8880a6d20548): kobject_uevent_env: filter function
caused the event to drop!
kobject: 'loop4' (ffff8880a4a513a0): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'rx-0' (ffff88808e1429d0): kobject_add_internal: parent: 'queues',
set: 'queues'
kobject: 'rx-0' (ffff88808e1429d0): kobject_uevent_env
kobject: 'rx-0' (ffff88808e1429d0): fill_kobj_path: path
= '/devices/virtual/net/sit0/queues/rx-0'
kobject: 'tx-0' (ffff888099267318): kobject_add_internal: parent: 'queues',
set: 'queues'
kobject: 'tx-0' (ffff888099267318): kobject_uevent_env
kobject: 'tx-0' (ffff888099267318): fill_kobj_path: path
= '/devices/virtual/net/sit0/queues/tx-0'
kobject: 'ip6tnl0' (ffff88805bb0b070): kobject_add_internal: parent: 'net',
set: 'devices'
kobject: 'ip6tnl0' (ffff88805bb0b070): kobject_uevent_env
kobject: 'ip6tnl0' (ffff88805bb0b070): fill_kobj_path: path
= '/devices/virtual/net/ip6tnl0'
kobject: 'queues' (ffff888098632248): kobject_add_internal:
parent: 'ip6tnl0', set: '<NULL>'
kobject: 'queues' (ffff888098632248): kobject_uevent_env
kobject: 'queues' (ffff888098632248): kobject_uevent_env: filter function
caused the event to drop!
kobject: 'rx-0' (ffff88808e142c10): kobject_add_internal: parent: 'queues',
set: 'queues'
kobject: 'rx-0' (ffff88808e142c10): kobject_uevent_env
kobject: 'rx-0' (ffff88808e142c10): fill_kobj_path: path
= '/devices/virtual/net/ip6tnl0/queues/rx-0'
kobject: 'tx-0' (ffff8880902aad18): kobject_add_internal: parent: 'queues',
set: 'queues'
kobject: 'tx-0' (ffff8880902aad18): kobject_uevent_env
kobject: 'tx-0' (ffff8880902aad18): fill_kobj_path: path
= '/devices/virtual/net/ip6tnl0/queues/tx-0'
kobject: 'ip6gre0' (ffff8880a8df9270): kobject_add_internal: parent: 'net',
set: 'devices'
kobject: 'ip6gre0' (ffff8880a8df9270): kobject_uevent_env
kobject: 'ip6gre0' (ffff8880a8df9270): fill_kobj_path: path
= '/devices/virtual/net/ip6gre0'
kobject: 'queues' (ffff888098632648): kobject_add_internal:
parent: 'ip6gre0', set: '<NULL>'
kobject: 'queues' (ffff888098632648): kobject_uevent_env
kobject: 'queues' (ffff888098632648): kobject_uevent_env: filter function
caused the event to drop!
kobject: 'rx-0' (ffff88808e1420d0): kobject_add_internal: parent: 'queues',
set: 'queues'
kobject: 'rx-0' (ffff88808e1420d0): kobject_uevent_env
kobject: 'rx-0' (ffff88808e1420d0): fill_kobj_path: path
= '/devices/virtual/net/ip6gre0/queues/rx-0'
kobject: 'tx-0' (ffff888078fb5598): kobject_add_internal: parent: 'queues',
set: 'queues'
kobject: 'tx-0' (ffff888078fb5598): kobject_uevent_env
kobject: 'tx-0' (ffff888078fb5598): fill_kobj_path: path
= '/devices/virtual/net/ip6gre0/queues/tx-0'
kobject: 'loop1' (ffff8880a4956120): kobject_uevent_env
kobject: 'loop1' (ffff8880a4956120): fill_kobj_path: path
= '/devices/virtual/block/loop1'
binder: 20779:20781 unknown command -217816818
binder: 20779:20781 ioctl c0306201 20008fd0 returned -22
Restarting kernel threads ... done.
kobject: 'loop5' (ffff8880a4a962e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4a962e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
Restarting kernel threads ... done.
kobject: 'loop3' (ffff8880a49e6aa0): kobject_uevent_env
Restarting kernel threads ... done.
kobject: 'loop3' (ffff8880a49e6aa0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
Restarting kernel threads ... done.
kobject: 'loop5' (ffff8880a4a962e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4a962e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop1' (ffff8880a4956120): kobject_uevent_env
kobject: 'loop1' (ffff8880a4956120): fill_kobj_path: path
= '/devices/virtual/block/loop1'
Restarting kernel threads ...
kobject: 'rx-0' (ffff88808e1420d0): kobject_cleanup, parent ffff888098632648
done.
kobject: 'rx-0' (ffff88808e1420d0): auto cleanup 'remove' event
kobject: 'rx-0' (ffff88808e1420d0): kobject_uevent_env
kobject: 'rx-0' (ffff88808e1420d0): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'rx-0' (ffff88808e1420d0): auto cleanup kobject_del
kobject: 'rx-0' (ffff88808e1420d0): calling ktype release
kobject: 'rx-0': free name
kobject: 'tx-0' (ffff888078fb5598): kobject_cleanup, parent ffff888098632648
kobject: 'tx-0' (ffff888078fb5598): auto cleanup 'remove' event
kobject: 'tx-0' (ffff888078fb5598): kobject_uevent_env
kobject: 'loop5' (ffff8880a4a962e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4a962e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'tx-0' (ffff888078fb5598): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'loop3' (ffff8880a49e6aa0): kobject_uevent_env
kobject: 'tx-0' (ffff888078fb5598): auto cleanup kobject_del
kobject: 'loop3' (ffff8880a49e6aa0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'tx-0' (ffff888078fb5598): calling ktype release
kobject: 'tx-0': free name
kobject: 'queues' (ffff888098632648): kobject_cleanup, parent
(null)
kobject: 'queues' (ffff888098632648): calling ktype release
kobject: 'queues' (ffff888098632648): kset_release
kobject: 'queues': free name
kobject: 'ip6gre0' (ffff8880a8df9270): kobject_uevent_env
kobject: 'ip6gre0' (ffff8880a8df9270): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'ip6gre0' (ffff8880a8df9270): kobject_cleanup, parent
(null)
kobject: 'ip6gre0' (ffff8880a8df9270): calling ktype release
kobject: 'ip6gre0': free name
kobject: 'rx-0' (ffff88808e142c10): kobject_cleanup, parent ffff888098632248
kobject: 'rx-0' (ffff88808e142c10): auto cleanup 'remove' event
kobject: 'rx-0' (ffff88808e142c10): kobject_uevent_env
kobject: 'rx-0' (ffff88808e142c10): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'rx-0' (ffff88808e142c10): auto cleanup kobject_del
kobject: 'rx-0' (ffff88808e142c10): calling ktype release
kobject: 'rx-0': free name
kobject: 'tx-0' (ffff8880902aad18): kobject_cleanup, parent ffff888098632248
kobject: 'tx-0' (ffff8880902aad18): auto cleanup 'remove' event
kobject: 'tx-0' (ffff8880902aad18): kobject_uevent_env
kobject: 'tx-0' (ffff8880902aad18): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'tx-0' (ffff8880902aad18): auto cleanup kobject_del
kobject: 'tx-0' (ffff8880902aad18): calling ktype release
kobject: 'tx-0': free name
kobject: 'queues' (ffff888098632248): kobject_cleanup, parent
(null)
kobject: 'queues' (ffff888098632248): calling ktype release
kobject: 'queues' (ffff888098632248): kset_release
kobject: 'queues': free name
kobject: 'ip6tnl0' (ffff88805bb0b070): kobject_uevent_env
kobject: 'ip6tnl0' (ffff88805bb0b070): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'loop4' (ffff8880a4a513a0): kobject_uevent_env
kobject: 'loop4' (ffff8880a4a513a0): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'ip6tnl0' (ffff88805bb0b070): kobject_cleanup, parent
(null)
kobject: 'ip6tnl0' (ffff88805bb0b070): calling ktype release
Restarting kernel threads ... done.
kobject: 'ip6tnl0': free name
kobject: 'loop3' (ffff8880a49e6aa0): kobject_uevent_env
kobject: 'loop3' (ffff8880a49e6aa0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'rx-0' (ffff88808e1429d0): kobject_cleanup, parent ffff8880a6d20548
kobject: 'rx-0' (ffff88808e1429d0): auto cleanup 'remove' event
Restarting kernel threads ... done.
kobject: 'loop5' (ffff8880a4a962e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4a962e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'rx-0' (ffff88808e1429d0): kobject_uevent_env
Restarting kernel threads ... done.
Restarting kernel threads ... done.
kobject: 'rx-0' (ffff88808e1429d0): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'loop3' (ffff8880a49e6aa0): kobject_uevent_env
Restarting kernel threads ... done.
kobject: 'loop3' (ffff8880a49e6aa0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'rx-0' (ffff88808e1429d0): auto cleanup kobject_del
kobject: 'rx-0' (ffff88808e1429d0): calling ktype release
kobject: 'rx-0': free name
kobject: 'tx-0' (ffff888099267318): kobject_cleanup, parent ffff8880a6d20548
kobject: 'tx-0' (ffff888099267318): auto cleanup 'remove' event
kobject: 'tx-0' (ffff888099267318): kobject_uevent_env
kobject: 'tx-0' (ffff888099267318): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'tx-0' (ffff888099267318): auto cleanup kobject_del
kobject: 'tx-0' (ffff888099267318): calling ktype release
kobject: 'tx-0': free name
kobject: 'queues' (ffff8880a6d20548): kobject_cleanup, parent
(null)
kobject: 'queues' (ffff8880a6d20548): calling ktype release
kobject: 'queues' (ffff8880a6d20548): kset_release
kobject: 'queues': free name
kobject: 'sit0' (ffff88805fb485f0): kobject_uevent_env
kobject: 'sit0' (ffff88805fb485f0): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'sit0' (ffff88805fb485f0): kobject_cleanup, parent (null)
kobject: 'sit0' (ffff88805fb485f0): calling ktype release
kobject: 'sit0': free name
kobject: 'rx-0' (ffff88808e142910): kobject_cleanup, parent ffff88809b45ce48
kobject: 'rx-0' (ffff88808e142910): auto cleanup 'remove' event
kobject: 'rx-0' (ffff88808e142910): kobject_uevent_env
kobject: 'rx-0' (ffff88808e142910): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'rx-0' (ffff88808e142910): auto cleanup kobject_del
kobject: 'rx-0' (ffff88808e142910): calling ktype release
kobject: 'rx-0': free name
kobject: 'tx-0' (ffff88808a933a18): kobject_cleanup, parent ffff88809b45ce48
kobject: 'tx-0' (ffff88808a933a18): auto cleanup 'remove' event
kobject: 'tx-0' (ffff88808a933a18): kobject_uevent_env
kobject: 'tx-0' (ffff88808a933a18): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'tx-0' (ffff88808a933a18): auto cleanup kobject_del
kobject: 'tx-0' (ffff88808a933a18): calling ktype release
kobject: 'tx-0': free name
kobject: 'queues' (ffff88809b45ce48): kobject_cleanup, parent
(null)
kobject: 'queues' (ffff88809b45ce48): calling ktype release
kobject: 'queues' (ffff88809b45ce48): kset_release
kobject: 'queues': free name
kobject: 'ip6_vti0' (ffff888052ceae70): kobject_uevent_env
kobject: 'ip6_vti0' (ffff888052ceae70): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'ip6_vti0' (ffff888052ceae70): kobject_cleanup, parent
(null)
kobject: 'ip6_vti0' (ffff888052ceae70): calling ktype release
kobject: 'ip6_vti0': free name
kobject: 'rx-0' (ffff88808f66ad90): kobject_cleanup, parent ffff888083e79648
kobject: 'rx-0' (ffff88808f66ad90): auto cleanup 'remove' event
kobject: 'rx-0' (ffff88808f66ad90): kobject_uevent_env
kobject: 'rx-0' (ffff88808f66ad90): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'rx-0' (ffff88808f66ad90): auto cleanup kobject_del
kobject: 'rx-0' (ffff88808f66ad90): calling ktype release
kobject: 'rx-0': free name
kobject: 'tx-0' (ffff8880a8064d58): kobject_cleanup, parent ffff888083e79648
kobject: 'tx-0' (ffff8880a8064d58): auto cleanup 'remove' event
kobject: 'tx-0' (ffff8880a8064d58): kobject_uevent_env
kobject: 'tx-0' (ffff8880a8064d58): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'tx-0' (ffff8880a8064d58): auto cleanup kobject_del
kobject: 'tx-0' (ffff8880a8064d58): calling ktype release
kobject: 'tx-0': free name
kobject: 'queues' (ffff888083e79648): kobject_cleanup, parent
(null)
kobject: 'queues' (ffff888083e79648): calling ktype release
kobject: 'queues' (ffff888083e79648): kset_release
kobject: 'queues': free name
kobject: 'ip_vti0' (ffff88805f102df0): kobject_uevent_env
kobject: 'ip_vti0' (ffff88805f102df0): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'ip_vti0' (ffff88805f102df0): kobject_cleanup, parent
(null)
kobject: 'loop4' (ffff8880a4a513a0): kobject_uevent_env
kobject: 'ip_vti0' (ffff88805f102df0): calling ktype release
kobject: 'loop4' (ffff8880a4a513a0): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'ip_vti0': free name
kobject: 'batman_adv' (ffff888028bd9980): kobject_uevent_env
kobject: 'batman_adv' (ffff888028bd9980): kobject_uevent_env: filter
function caused the event to drop!
kobject: 'batman_adv' (ffff888028bd9980): kobject_cleanup, parent
(null)
kobject: 'batman_adv' (ffff888028bd9980): calling ktype release
kobject: (ffff888028bd9980): dynamic_kobj_release
kobject: 'batman_adv': free name
kobject: 'rx-0' (ffff88808f66a910): kobject_cleanup, parent ffff888083e79a48
kobject: 'rx-0' (ffff88808f66a910): auto cleanup 'remove' event
kobject: 'rx-0' (ffff88808f66a910): kobject_uevent_env
kobject: 'rx-0' (ffff88808f66a910): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'rx-0' (ffff88808f66a910): auto cleanup kobject_del
kobject: 'rx-0' (ffff88808f66a910): calling ktype release
kobject: 'rx-0': free name
kobject: 'tx-0' (ffff88809a9c7058): kobject_cleanup, parent ffff888083e79a48
kobject: 'tx-0' (ffff88809a9c7058): auto cleanup 'remove' event
kobject: 'tx-0' (ffff88809a9c7058): kobject_uevent_env
kobject: 'tx-0' (ffff88809a9c7058): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'tx-0' (ffff88809a9c7058): auto cleanup kobject_del
kobject: 'tx-0' (ffff88809a9c7058): calling ktype release
kobject: 'tx-0': free name
kobject: 'queues' (ffff888083e79a48): kobject_cleanup, parent
(null)
kobject: 'queues' (ffff888083e79a48): calling ktype release
kobject: 'queues' (ffff888083e79a48): kset_release
kobject: 'queues': free name
kobject: 'erspan0' (ffff88805ec6abf0): kobject_uevent_env
kobject: 'erspan0' (ffff88805ec6abf0): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'erspan0' (ffff88805ec6abf0): kobject_cleanup, parent
(null)
kobject: 'erspan0' (ffff88805ec6abf0): calling ktype release
kobject: 'erspan0': free name
kobject: 'batman_adv' (ffff888028bd9c80): kobject_uevent_env
kobject: 'batman_adv' (ffff888028bd9c80): kobject_uevent_env: filter
function caused the event to drop!
kobject: 'batman_adv' (ffff888028bd9c80): kobject_cleanup, parent
(null)
kobject: 'batman_adv' (ffff888028bd9c80): calling ktype release
kobject: (ffff888028bd9c80): dynamic_kobj_release
kobject: 'batman_adv': free name
kobject: 'rx-0' (ffff88808f66a490): kobject_cleanup, parent ffff888083e79148
kobject: 'rx-0' (ffff88808f66a490): auto cleanup 'remove' event
kobject: 'rx-0' (ffff88808f66a490): kobject_uevent_env
kobject: 'rx-0' (ffff88808f66a490): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'rx-0' (ffff88808f66a490): auto cleanup kobject_del
kobject: 'rx-0' (ffff88808f66a490): calling ktype release
kobject: 'rx-0': free name
kobject: 'tx-0' (ffff88808d084d58): kobject_cleanup, parent ffff888083e79148
kobject: 'tx-0' (ffff88808d084d58): auto cleanup 'remove' event
kobject: 'tx-0' (ffff88808d084d58): kobject_uevent_env
kobject: 'tx-0' (ffff88808d084d58): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'tx-0' (ffff88808d084d58): auto cleanup kobject_del
kobject: 'tx-0' (ffff88808d084d58): calling ktype release
kobject: 'tx-0': free name
kobject: 'queues' (ffff888083e79148): kobject_cleanup, parent
(null)
kobject: 'queues' (ffff888083e79148): calling ktype release
kobject: 'queues' (ffff888083e79148): kset_release
kobject: 'queues': free name
kobject: 'gretap0' (ffff8880752b29f0): kobject_uevent_env
kobject: 'gretap0' (ffff8880752b29f0): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'gretap0' (ffff8880752b29f0): kobject_cleanup, parent
(null)
kobject: 'gretap0' (ffff8880752b29f0): calling ktype release
kobject: 'gretap0': free name
kobject: 'rx-0' (ffff888099fc7010): kobject_cleanup, parent ffff888083e79448
kobject: 'rx-0' (ffff888099fc7010): auto cleanup 'remove' event
kobject: 'rx-0' (ffff888099fc7010): kobject_uevent_env
kobject: 'rx-0' (ffff888099fc7010): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'rx-0' (ffff888099fc7010): auto cleanup kobject_del
kobject: 'rx-0' (ffff888099fc7010): calling ktype release
kobject: 'rx-0': free name
kobject: 'tx-0' (ffff8880926bf018): kobject_cleanup, parent ffff888083e79448
kobject: 'tx-0' (ffff8880926bf018): auto cleanup 'remove' event
kobject: 'tx-0' (ffff8880926bf018): kobject_uevent_env
kobject: 'tx-0' (ffff8880926bf018): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'tx-0' (ffff8880926bf018): auto cleanup kobject_del
kobject: 'tx-0' (ffff8880926bf018): calling ktype release
kobject: 'tx-0': free name
kobject: 'queues' (ffff888083e79448): kobject_cleanup, parent
(null)
kobject: 'queues' (ffff888083e79448): calling ktype release
kobject: 'queues' (ffff888083e79448): kset_release
kobject: 'queues': free name
kobject: 'gre0' (ffff88805c9108b0): kobject_uevent_env
kobject: 'gre0' (ffff88805c9108b0): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'gre0' (ffff88805c9108b0): kobject_cleanup, parent (null)
kobject: 'gre0' (ffff88805c9108b0): calling ktype release
kobject: 'gre0': free name
kobject: 'rx-0' (ffff88809090b310): kobject_cleanup, parent ffff8880939c1248
kobject: 'rx-0' (ffff88809090b310): auto cleanup 'remove' event
kobject: 'rx-0' (ffff88809090b310): kobject_uevent_env
kobject: 'rx-0' (ffff88809090b310): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'rx-0' (ffff88809090b310): auto cleanup kobject_del
kobject: 'rx-0' (ffff88809090b310): calling ktype release
kobject: 'rx-0': free name
kobject: 'tx-0' (ffff8880a59782d8): kobject_cleanup, parent ffff8880939c1248
kobject: 'tx-0' (ffff8880a59782d8): auto cleanup 'remove' event
kobject: 'tx-0' (ffff8880a59782d8): kobject_uevent_env
kobject: 'tx-0' (ffff8880a59782d8): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'tx-0' (ffff8880a59782d8): auto cleanup kobject_del
kobject: 'tx-0' (ffff8880a59782d8): calling ktype release
kobject: 'tx-0': free name
kobject: 'queues' (ffff8880939c1248): kobject_cleanup, parent
(null)
kobject: 'queues' (ffff8880939c1248): calling ktype release
kobject: 'queues' (ffff8880939c1248): kset_release
kobject: 'queues': free name
kobject: 'tunl0' (ffff88805cfc7330): kobject_uevent_env
kobject: 'tunl0' (ffff88805cfc7330): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'tunl0' (ffff88805cfc7330): kobject_cleanup, parent
(null)
kobject: 'tunl0' (ffff88805cfc7330): calling ktype release
kobject: 'tunl0': free name
kobject: 'rx-0' (ffff88807543e9d0): kobject_cleanup, parent ffff8880939c1948
kobject: 'rx-0' (ffff88807543e9d0): auto cleanup 'remove' event
kobject: 'rx-0' (ffff88807543e9d0): kobject_uevent_env
kobject: 'rx-0' (ffff88807543e9d0): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'rx-0' (ffff88807543e9d0): auto cleanup kobject_del
kobject: 'rx-0' (ffff88807543e9d0): calling ktype release
kobject: 'rx-0': free name
kobject: 'tx-0' (ffff8880939c8018): kobject_cleanup, parent ffff8880939c1948
kobject: 'tx-0' (ffff8880939c8018): auto cleanup 'remove' event
kobject: 'tx-0' (ffff8880939c8018): kobject_uevent_env
kobject: 'tx-0' (ffff8880939c8018): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'tx-0' (ffff8880939c8018): auto cleanup kobject_del
kobject: 'tx-0' (ffff8880939c8018): calling ktype release
kobject: 'tx-0': free name
kobject: 'queues' (ffff8880939c1948): kobject_cleanup, parent
(null)
kobject: 'queues' (ffff8880939c1948): calling ktype release
kobject: 'queues' (ffff8880939c1948): kset_release
kobject: 'queues': free name
kobject: 'lo' (ffff888054bcc670): kobject_uevent_env
kobject: 'lo' (ffff888054bcc670): kobject_uevent_env: uevent_suppress
caused the event to drop!
kobject: 'lo' (ffff888054bcc670): kobject_cleanup, parent (null)
kobject: 'lo' (ffff888054bcc670): calling ktype release
kobject: 'lo': free name
kobject: 'loop1' (ffff8880a4956120): kobject_uevent_env
kobject: 'loop1' (ffff8880a4956120): fill_kobj_path: path
= '/devices/virtual/block/loop1'
Restarting kernel threads ... done.
kobject: 'loop3' (ffff8880a49e6aa0): kobject_uevent_env
kobject: 'loop3' (ffff8880a49e6aa0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
Restarting kernel threads ... done.
kobject: 'loop1' (ffff8880a4956120): kobject_uevent_env
Restarting kernel threads ... done.
kobject: 'loop1' (ffff8880a4956120): fill_kobj_path: path
= '/devices/virtual/block/loop1'
Restarting kernel threads ... done.
kobject: 'loop5' (ffff8880a4a962e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4a962e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
Restarting kernel threads ...
kobject: 'loop3' (ffff8880a49e6aa0): kobject_uevent_env
done.
kobject: 'loop3' (ffff8880a49e6aa0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop1' (ffff8880a4956120): kobject_uevent_env
Restarting kernel threads ... done.
kobject: 'loop1' (ffff8880a4956120): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop5' (ffff8880a4a962e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4a962e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop3' (ffff8880a49e6aa0): kobject_uevent_env
kobject: 'loop3' (ffff8880a49e6aa0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop4' (ffff8880a4a513a0): kobject_uevent_env
kobject: 'loop4' (ffff8880a4a513a0): fill_kobj_path: path
= '/devices/virtual/block/loop4'
Restarting kernel threads ... done.
kobject: 'loop3' (ffff8880a49e6aa0): kobject_uevent_env
kobject: 'loop3' (ffff8880a49e6aa0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
Restarting kernel threads ... done.
kobject: 'loop5' (ffff8880a4a962e0): kobject_uevent_env
Restarting kernel threads ... done.
kobject: 'loop5' (ffff8880a4a962e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop1' (ffff8880a4956120): kobject_uevent_env
kobject: 'loop1' (ffff8880a4956120): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop5' (ffff8880a4a962e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4a962e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop3' (ffff8880a49e6aa0): kobject_uevent_env
kobject: 'loop3' (ffff8880a49e6aa0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop4' (ffff8880a4a513a0): kobject_uevent_env
kobject: 'loop4' (ffff8880a4a513a0): fill_kobj_path: path
= '/devices/virtual/block/loop4'
Restarting kernel threads ... done.
binder: 20993:21001 unknown command -1844750836
binder: 20993:21001 ioctl c0306201 2000dfd0 returned -22
kobject: 'loop3' (ffff8880a49e6aa0): kobject_uevent_env
Restarting kernel threads ... done.
kobject: 'loop3' (ffff8880a49e6aa0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
Restarting kernel threads ... done.
Restarting kernel threads ... done.
kobject: 'loop5' (ffff8880a4a962e0): kobject_uevent_env
Restarting kernel threads ... done.
kobject: 'loop5' (ffff8880a4a962e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop4' (ffff8880a4a513a0): kobject_uevent_env
kobject: 'loop4' (ffff8880a4a513a0): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop1' (ffff8880a4956120): kobject_uevent_env
kobject: 'loop1' (ffff8880a4956120): fill_kobj_path: path
= '/devices/virtual/block/loop1'
Restarting kernel threads ... done.
Restarting kernel threads ... done.
kobject: 'loop4' (ffff8880a4a513a0): kobject_uevent_env
kobject: 'loop4' (ffff8880a4a513a0): fill_kobj_path: path
= '/devices/virtual/block/loop4'
Restarting kernel threads ... done.
kobject: 'loop5' (ffff8880a4a962e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4a962e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop3' (ffff8880a49e6aa0): kobject_uevent_env
kobject: 'loop3' (ffff8880a49e6aa0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop3' (ffff8880a49e6aa0): kobject_uevent_env
kobject: 'loop3' (ffff8880a49e6aa0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
Restarting kernel threads ... done.
kobject: 'loop1' (ffff8880a4956120): kobject_uevent_env
kobject: 'loop1' (ffff8880a4956120): fill_kobj_path: path
= '/devices/virtual/block/loop1'
Restarting kernel threads ... done.
kobject: 'loop5' (ffff8880a4a962e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4a962e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'


---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.

syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.

[syzbot]

Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.