syzbot


INFO: task can't die in __cond_resched
Status: fixed on 2022/03/08 16:10
Reported-by: syzbot+@syzkaller.appspotmail.com
Fix commit: e9edc188fc76 netfilter: conntrack: serialize hash resizes and cleanups
First crash: 249d, last: 194d

Cause bisection: failed (bisect log)

Sample crash report:
INFO: task syz-executor891:6557 can't die for more than 143 seconds.
task:syz-executor891 state:R  running task     stack:27176 pid: 6557 ppid:  6541 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4984 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6265
 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6431
 __cond_resched+0x13/0x20 kernel/sched/core.c:8144
 _cond_resched include/linux/sched.h:2025 [inline]
 inet_twsk_purge+0xed/0x7d0 net/ipv4/inet_timewait_sock.c:267
 ops_exit_list+0x10d/0x160 net/core/net_namespace.c:171
 setup_net+0x639/0xa30 net/core/net_namespace.c:349
 copy_net_ns+0x318/0x760 net/core/net_namespace.c:470
 create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110
 unshare_nsproxy_namespaces+0xc1/0x1f0 kernel/nsproxy.c:226
 ksys_unshare+0x445/0x920 kernel/fork.c:3126
 __do_sys_unshare kernel/fork.c:3197 [inline]
 __se_sys_unshare kernel/fork.c:3195 [inline]
 __x64_sys_unshare+0x2d/0x40 kernel/fork.c:3195
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f452bb29749
RSP: 002b:00007f452bad3318 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007f452bbaa3c8 RCX: 00007f452bb29749
RDX: 00007f452bb29749 RSI: 00000000000f4240 RDI: 0000000040000000
RBP: 00007f452bbaa3c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f452bbaa3cc
R13: 00007ffdf2fc3e2f R14: 00007f452bad3400 R15: 0000000000022000
 </TASK>
INFO: task syz-executor891:6570 can't die for more than 149 seconds.
task:syz-executor891 state:R  running task     stack:27808 pid: 6570 ppid:  6541 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4984 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6265
 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6431
 __cond_resched+0x13/0x20 kernel/sched/core.c:8144
 _cond_resched include/linux/sched.h:2025 [inline]
 inet_twsk_purge+0xed/0x7d0 net/ipv4/inet_timewait_sock.c:267
 ops_exit_list+0x10d/0x160 net/core/net_namespace.c:171
 setup_net+0x639/0xa30 net/core/net_namespace.c:349
 copy_net_ns+0x318/0x760 net/core/net_namespace.c:470
 create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110
 unshare_nsproxy_namespaces+0xc1/0x1f0 kernel/nsproxy.c:226
 ksys_unshare+0x445/0x920 kernel/fork.c:3126
 __do_sys_unshare kernel/fork.c:3197 [inline]
 __se_sys_unshare kernel/fork.c:3195 [inline]
 __x64_sys_unshare+0x2d/0x40 kernel/fork.c:3195
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f452bb29749
RSP: 002b:00007f452bab2318 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007f452bbaa3d8 RCX: 00007f452bb29749
RDX: 00007f452bb29749 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 00007f452bbaa3d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f452bbaa3dc
R13: 00007ffdf2fc3e2f R14: 00007f452bab2400 R15: 0000000000022000
 </TASK>

Crashes (66):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-linux-next-kasan-gce-root 2021/11/14 00:03 linux-next f2e19fd15bd7 83f5c9b5 .config log report syz C INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/10/19 05:53 linux-next 60e8840126bd 24dc29db .config log report syz C INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/10/05 10:59 linux-next a25006a77348 ce697b49 .config log report syz C INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/10/03 23:38 linux-next a25006a77348 db0f5787 .config log report syz C INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/10/02 14:35 linux-next a25006a77348 db0f5787 .config log report syz C INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/09/20 20:28 linux-next 1f77990c4b79 af796c18 .config log report syz C INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/11/13 16:51 linux-next f2e19fd15bd7 83f5c9b5 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/11/13 14:20 linux-next f2e19fd15bd7 83f5c9b5 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/11/13 04:54 linux-next f2e19fd15bd7 83f5c9b5 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/11/12 17:55 linux-next f2e19fd15bd7 83f5c9b5 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/11/12 16:20 linux-next f2e19fd15bd7 83f5c9b5 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/11/12 12:39 linux-next f2e19fd15bd7 75b04091 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/11/11 16:00 linux-next ad8be4fa6e81 75b04091 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/11/10 02:43 linux-next c8109c2ba35e 55fa030c .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/11/10 00:06 linux-next c8109c2ba35e 59bcaf9a .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/11/09 13:44 linux-next c8109c2ba35e 59bcaf9a .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/11/09 05:19 linux-next c8109c2ba35e 8ab17e57 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/11/09 01:03 linux-next e844ee04dee0 8ab17e57 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/11/08 11:38 linux-next e844ee04dee0 d29682f1 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/11/08 02:13 linux-next 6a37ebbe07bf 4c1be0be .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/11/07 16:42 linux-next 6a37ebbe07bf 4c1be0be .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/11/07 02:39 linux-next 6a37ebbe07bf 4c1be0be .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/11/05 15:48 linux-next b477ae38e815 4c1be0be .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/11/05 04:30 linux-next b477ae38e815 4c1be0be .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/11/04 03:59 linux-next 8ccbda2840b7 4c1be0be .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/11/03 10:55 linux-next 8ccbda2840b7 17f3edd2 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/11/02 18:33 linux-next 9150de4aac1e 17f3edd2 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/11/02 11:04 linux-next 9150de4aac1e 098b5d53 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/11/01 15:34 linux-next bdcc9f6a5682 098b5d53 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/11/01 05:36 linux-next bdcc9f6a5682 098b5d53 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/11/01 04:19 linux-next bdcc9f6a5682 098b5d53 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/10/31 09:24 linux-next bdcc9f6a5682 098b5d53 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/10/29 20:57 linux-next bdcc9f6a5682 098b5d53 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/10/29 08:55 linux-next bdcc9f6a5682 2353a3ec .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/10/29 04:19 linux-next 503f375baa99 2353a3ec .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/10/28 03:25 linux-next ae5179317e79 be531bb4 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/10/25 10:44 linux-next 9ae1fbdeabd3 4f0000ee .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/10/25 10:14 linux-next 9ae1fbdeabd3 4f0000ee .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/10/22 19:24 linux-next cf6c9d12750c 282f03fb .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/10/20 08:28 linux-next 51dba6e335ff 466b7db1 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/10/19 21:20 linux-next 60e8840126bd 466b7db1 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/10/19 17:58 linux-next 60e8840126bd 24dc29db .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/10/18 23:50 linux-next 60e8840126bd 24dc29db .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/10/18 17:20 linux-next 60e8840126bd 0c5d9412 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/10/18 13:39 linux-next 60e8840126bd 0c5d9412 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/10/18 10:12 linux-next 60e8840126bd 0c5d9412 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/10/17 08:35 linux-next 7c832d2f9b95 0c5d9412 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/10/15 12:35 linux-next 7c832d2f9b95 0c5d9412 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/10/15 09:51 linux-next 8006b911c90a 0c5d9412 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/10/10 13:47 linux-next 683f29b781ae 838e7e2c .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/10/08 20:59 linux-next 683f29b781ae efe0f24d .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/10/06 18:25 linux-next 0dda5ee37364 0a63fd36 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/10/06 04:20 linux-next 29616f67fcbd 0a63fd36 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/10/05 17:56 linux-next 29616f67fcbd 0a63fd36 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/10/01 14:59 linux-next a25006a77348 cc80db95 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/09/30 08:16 linux-next c7b4d0e56a1d be530f6c .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/09/27 20:15 linux-next bf5b1e621a51 78494d16 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/09/27 16:15 linux-next bf5b1e621a51 78494d16 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/09/27 10:12 linux-next bf5b1e621a51 78494d16 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/09/26 04:34 linux-next 5a5d008887b4 8cac236e .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/09/21 12:21 linux-next 83fa5857d812 169724fe .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/09/21 11:40 linux-next 83fa5857d812 af796c18 .config log report info INFO: task can't die in __cond_resched
ci-upstream-linux-next-kasan-gce-root 2021/09/20 14:21 linux-next 1f77990c4b79 af796c18 .config log report info INFO: task can't die in __cond_resched