syzbot


INFO: task hung in rollback_registered_many (2)

Status: closed as invalid on 2019/10/23 07:54
Subsystems: net
[Documentation on labels]
First crash: 2031d, last: 1736d
Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in rollback_registered_many can 4 2052d 2059d 11/26 fixed on 2018/10/11 14:33
linux-4.19 INFO: task hung in rollback_registered_many 1 1740d 1740d 0/1 auto-closed as invalid on 2019/12/13 02:07
android-49 INFO: task hung in rollback_registered_many 2 1740d 1796d 0/3 auto-closed as invalid on 2019/12/13 20:53

Sample crash report:
INFO: task kworker/u4:5:30594 blocked for more than 143 seconds.
      Not tainted 5.3.0-rc4+ #133
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/u4:5    D24472 30594      2 0x80004000
Workqueue: netns cleanup_net
Call Trace:
 context_switch kernel/sched/core.c:3254 [inline]
 __schedule+0x755/0x1580 kernel/sched/core.c:3880
 schedule+0xa8/0x270 kernel/sched/core.c:3944
 exp_funnel_lock kernel/rcu/tree_exp.h:308 [inline]
 synchronize_rcu_expedited+0x544/0x5b0 kernel/rcu/tree_exp.h:816
 synchronize_net+0x3b/0x60 net/core/dev.c:9264
 rollback_registered_many+0x595/0xdf0 net/core/dev.c:8188
 unregister_netdevice_many.part.0+0x1b/0x1f0 net/core/dev.c:9309
 unregister_netdevice_many+0x3b/0x50 net/core/dev.c:9308
 ip_tunnel_delete_nets+0x41e/0x5f0 net/ipv4/ip_tunnel.c:1113
 ipgre_tap_exit_batch_net+0x23/0x30 net/ipv4/ip_gre.c:1577
 ops_exit_list.isra.0+0xfc/0x150 net/core/net_namespace.c:175
 cleanup_net+0x4e2/0xa70 net/core/net_namespace.c:594
 process_one_work+0x9af/0x1740 kernel/workqueue.c:2269
 worker_thread+0x98/0xe40 kernel/workqueue.c:2415
 kthread+0x361/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
INFO: task syz-executor.2:25656 blocked for more than 143 seconds.
      Not tainted 5.3.0-rc4+ #133
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.2  D28288 25656  31206 0x00004004
Call Trace:
 context_switch kernel/sched/core.c:3254 [inline]
 __schedule+0x755/0x1580 kernel/sched/core.c:3880
 schedule+0xa8/0x270 kernel/sched/core.c:3944
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4003
 __mutex_lock_common kernel/locking/mutex.c:1007 [inline]
 __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1077
 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092
 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72
 sock_do_ioctl+0x24e/0x2f0 net/socket.c:1051
 sock_ioctl+0x3ed/0x790 net/socket.c:1189
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:509 [inline]
 do_vfs_ioctl+0xdb6/0x13e0 fs/ioctl.c:696
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713
 __do_sys_ioctl fs/ioctl.c:720 [inline]
 __se_sys_ioctl fs/ioctl.c:718 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459829
Code: 24 60 48 8b 42 08 48 8b 4a 10 48 8b 5a 18 48 8b 72 20 48 8b 7a 28 48 8b 3f 4c 8b 42 30 48 8b 52 38 48 85 d2 76 62 48 89 44 24 <58> 4c 89 44 24 28 48 89 0c 24 48 89 5c 24 08 48 c7 44 24 10 00 00
RSP: 002b:00007efdfa605c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459829
RDX: 0000000000400200 RSI: 0000000000008912 RDI: 0000000000000004
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007efdfa6066d4
R13: 00000000004c31dd R14: 00000000004d6918 R15: 00000000ffffffff
INFO: task syz-executor.5:25797 blocked for more than 143 seconds.
      Not tainted 5.3.0-rc4+ #133
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.5  D28704 25797   7525 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:3254 [inline]
 __schedule+0x755/0x1580 kernel/sched/core.c:3880
 schedule+0xa8/0x270 kernel/sched/core.c:3944
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4003
 __mutex_lock_common kernel/locking/mutex.c:1007 [inline]
 __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1077
 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092
 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72
 sock_do_ioctl+0x24e/0x2f0 net/socket.c:1051
 sock_ioctl+0x3ed/0x790 net/socket.c:1189
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:509 [inline]
 do_vfs_ioctl+0xdb6/0x13e0 fs/ioctl.c:696
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713
 __do_sys_ioctl fs/ioctl.c:720 [inline]
 __se_sys_ioctl fs/ioctl.c:718 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459829
Code: 24 60 48 8b 42 08 48 8b 4a 10 48 8b 5a 18 48 8b 72 20 48 8b 7a 28 48 8b 3f 4c 8b 42 30 48 8b 52 38 48 85 d2 76 62 48 89 44 24 <58> 4c 89 44 24 28 48 89 0c 24 48 89 5c 24 08 48 c7 44 24 10 00 00
RSP: 002b:00007f60fc78bc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459829
RDX: 0000000000400201 RSI: 0000000000008912 RDI: 0000000000000003
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f60fc78c6d4
R13: 00000000004c31dd R14: 00000000004d6918 R15: 00000000ffffffff
INFO: task syz-executor.5:26404 blocked for more than 144 seconds.
      Not tainted 5.3.0-rc4+ #133
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.5  D29856 26404   7525 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:3254 [inline]
 __schedule+0x755/0x1580 kernel/sched/core.c:3880
 schedule+0xa8/0x270 kernel/sched/core.c:3944
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4003
 __mutex_lock_common kernel/locking/mutex.c:1007 [inline]
 __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1077
 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092
 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72
 sock_do_ioctl+0x24e/0x2f0 net/socket.c:1051
 sock_ioctl+0x3ed/0x790 net/socket.c:1189
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:509 [inline]
 do_vfs_ioctl+0xdb6/0x13e0 fs/ioctl.c:696
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713
 __do_sys_ioctl fs/ioctl.c:720 [inline]
 __se_sys_ioctl fs/ioctl.c:718 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459829
Code: 24 60 48 8b 42 08 48 8b 4a 10 48 8b 5a 18 48 8b 72 20 48 8b 7a 28 48 8b 3f 4c 8b 42 30 48 8b 52 38 48 85 d2 76 62 48 89 44 24 <58> 4c 89 44 24 28 48 89 0c 24 48 89 5c 24 08 48 c7 44 24 10 00 00
RSP: 002b:00007f60fc749c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459829
RDX: 0000000000400201 RSI: 0000000000008912 RDI: 0000000000000003
RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f60fc74a6d4
R13: 00000000004c31dd R14: 00000000004d6918 R15: 00000000ffffffff
INFO: task syz-executor.4:26198 blocked for more than 144 seconds.
      Not tainted 5.3.0-rc4+ #133
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.4  D28704 26198  20873 0x00004004
Call Trace:
 context_switch kernel/sched/core.c:3254 [inline]
 __schedule+0x755/0x1580 kernel/sched/core.c:3880
 schedule+0xa8/0x270 kernel/sched/core.c:3944
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4003
 __mutex_lock_common kernel/locking/mutex.c:1007 [inline]
 __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1077
 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092
 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72
 sock_do_ioctl+0x24e/0x2f0 net/socket.c:1051
 sock_ioctl+0x3ed/0x790 net/socket.c:1189
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:509 [inline]
 do_vfs_ioctl+0xdb6/0x13e0 fs/ioctl.c:696
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713
 __do_sys_ioctl fs/ioctl.c:720 [inline]
 __se_sys_ioctl fs/ioctl.c:718 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459829
Code: 24 60 48 8b 42 08 48 8b 4a 10 48 8b 5a 18 48 8b 72 20 48 8b 7a 28 48 8b 3f 4c 8b 42 30 48 8b 52 38 48 85 d2 76 62 48 89 44 24 <58> 4c 89 44 24 28 48 89 0c 24 48 89 5c 24 08 48 c7 44 24 10 00 00
RSP: 002b:00007f39bca09c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459829
RDX: 0000000000400200 RSI: 0000000000008912 RDI: 0000000000000005
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f39bca0a6d4
R13: 00000000004c31dd R14: 00000000004d6918 R15: 00000000ffffffff
INFO: task syz-executor.1:26200 blocked for more than 144 seconds.
      Not tainted 5.3.0-rc4+ #133
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1  D28304 26200  21103 0x00004004
Call Trace:
 context_switch kernel/sched/core.c:3254 [inline]
 __schedule+0x755/0x1580 kernel/sched/core.c:3880
 schedule+0xa8/0x270 kernel/sched/core.c:3944
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:4003
 __mutex_lock_common kernel/locking/mutex.c:1007 [inline]
 __mutex_lock+0x7b0/0x13c0 kernel/locking/mutex.c:1077
 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1092
 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72
 sock_do_ioctl+0x24e/0x2f0 net/socket.c:1051
 sock_ioctl+0x3ed/0x790 net/socket.c:1189
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:509 [inline]
 do_vfs_ioctl+0xdb6/0x13e0 fs/ioctl.c:696
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713
 __do_sys_ioctl fs/ioctl.c:720 [inline]
 __se_sys_ioctl fs/ioctl.c:718 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459829
Code: 24 60 48 8b 42 08 48 8b 4a 10 48 8b 5a 18 48 8b 72 20 48 8b 7a 28 48 8b 3f 4c 8b 42 30 48 8b 52 38 48 85 d2 76 62 48 89 44 24 <58> 4c 89 44 24 28 48 89 0c 24 48 89 5c 24 08 48 c7 44 24 10 00 00
RSP: 002b:00007f31b50adc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459829
RDX: 0000000000400200 RSI: 0000000000008912 RDI: 0000000000000007
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f31b50ae6d4
R13: 00000000004c31dd R14: 00000000004d6918 R15: 00000000ffffffff
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 PID: 1058 Comm: khungtaskd Not tainted 5.3.0-rc4+ #133
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 nmi_cpu_backtrace.cold+0x70/0xb2 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x23b/0x28b lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline]
 watchdog+0x9d0/0xef0 kernel/hung_task.c:289
 kthread+0x361/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60

Crashes (37):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/08/18 15:05 upstream 8fde2832bd0b 55bf8926 .config console log report ci-upstream-kasan-gce
2019/08/16 02:20 upstream a69e90512d9d 8fd428a1 .config console log report ci-upstream-kasan-gce
2019/08/13 15:51 upstream d45331b00ddb 8620c2c2 .config console log report ci-upstream-kasan-gce
2019/07/29 14:36 upstream 609488bc979f c85e1c5b .config console log report ci-upstream-kasan-gce
2019/06/19 12:57 upstream bed3c0d84e7e 34bf9440 .config console log report ci-upstream-kasan-gce
2019/04/20 10:15 upstream 371dd432ab39 b0e8efcb .config console log report ci-upstream-kasan-gce-selinux-root
2019/03/19 19:48 upstream b7a42146dca3 e4549234 .config console log report ci-upstream-kasan-gce-selinux-root
2019/03/09 00:38 upstream 3601fe43e816 12365b99 .config console log report ci-upstream-kasan-gce-root
2019/06/22 15:48 net-old 48620e341659 34bf9440 .config console log report ci-upstream-net-this-kasan-gce
2019/04/29 23:27 net-old 2ae7a39770c7 b617407b .config console log report ci-upstream-net-this-kasan-gce
2019/03/26 20:18 net-old d29f5aa0bc0c 55684ce1 .config console log report ci-upstream-net-this-kasan-gce
2018/12/02 07:41 net-old 35b827b6d061 5a581673 .config console log report ci-upstream-net-this-kasan-gce
2018/11/24 18:57 net-old 07093b764769 ecc7c870 .config console log report ci-upstream-net-this-kasan-gce
2019/08/19 13:50 net-next-old 10086b345385 b8ceabfc .config console log report ci-upstream-net-kasan-gce
2019/08/13 16:18 net-next-old 53f6f391786e 8620c2c2 .config console log report ci-upstream-net-kasan-gce
2019/08/10 04:58 net-next-old ca497fb6aa9f acb51638 .config console log report ci-upstream-net-kasan-gce
2019/08/07 23:56 net-next-old 13dfb3fa4943 e6ebef88 .config console log report ci-upstream-net-kasan-gce
2019/07/29 02:58 net-next-old 31cc088a4f5d c85e1c5b .config console log report ci-upstream-net-kasan-gce
2019/05/08 10:30 net-next-old a55a385d8c84 a7383bfa .config console log report ci-upstream-net-kasan-gce
2019/05/01 06:33 net-next-old a658a3f2ecba 618456b4 .config console log report ci-upstream-net-kasan-gce
2019/04/28 22:29 net-next-old b1a79360ee86 b617407b .config console log report ci-upstream-net-kasan-gce
2019/04/27 01:21 net-next-old 148f025d41a8 b617407b .config console log report ci-upstream-net-kasan-gce
2019/04/21 12:11 net-next-old 4ef6cbe80d71 b0e8efcb .config console log report ci-upstream-net-kasan-gce
2019/04/20 22:24 net-next-old 5313794b7915 b0e8efcb .config console log report ci-upstream-net-kasan-gce
2019/04/20 15:03 net-next-old d7cc399e1227 b0e8efcb .config console log report ci-upstream-net-kasan-gce
2019/03/25 20:00 net-next-old 68cc2999f692 2c86e0a5 .config console log report ci-upstream-net-kasan-gce
2019/03/22 05:51 net-next-old 0b03a5ca8b14 dce6e62f .config console log report ci-upstream-net-kasan-gce
2019/03/15 05:32 net-next-old 3b319ee220a8 d72db19b .config console log report ci-upstream-net-kasan-gce
2019/03/01 14:40 net-next-old be9cefe796f3 8a4b3a6b .config console log report ci-upstream-net-kasan-gce
2019/02/26 09:49 net-next-old ace4a267e89f 8022bafd .config console log report ci-upstream-net-kasan-gce
2019/02/02 12:35 net-next-old d6b0a01faa6a c198d5dd .config console log report ci-upstream-net-kasan-gce
2018/12/17 19:40 net-next-old ae6750e0a5ef def91db3 .config console log report ci-upstream-net-kasan-gce
2018/10/28 03:16 net-next-old 345671ea0f92 8efba39a .config console log report ci-upstream-net-kasan-gce
2019/04/21 06:36 linux-next 3f018f4a019a b0e8efcb .config console log report ci-upstream-linux-next-kasan-gce-root
2019/04/19 13:58 linux-next 3f018f4a019a b0e8efcb .config console log report ci-upstream-linux-next-kasan-gce-root
2019/02/26 18:59 linux-next 8e7f81e2ebc4 a36ecd98 .config console log report ci-upstream-linux-next-kasan-gce-root
2019/01/16 16:01 linux-next cbeb3db684f7 d538790b .config console log report ci-upstream-linux-next-kasan-gce-root
* Struck through repros no longer work on HEAD.