syzbot


INFO: task hung in packet_release

Status: closed as invalid on 2019/10/23 07:21
Subsystems: net
[Documentation on labels]
Reported-by: syzbot+eccbee7c7ae0d71a871b@syzkaller.appspotmail.com
First crash: 2134d, last: 1736d
Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 INFO: task hung in packet_release 1 1771d 1771d 0/1 auto-closed as invalid on 2020/01/09 04:52
android-414 INFO: task hung in packet_release 2 2077d 1921d 0/1 auto-closed as invalid on 2019/05/08 04:16
android-49 INFO: task hung in packet_release 4 1847d 1921d 0/3 auto-closed as invalid on 2019/10/25 08:48

Sample crash report:
INFO: task syz-executor.2:12037 blocked for more than 143 seconds.
      Not tainted 5.3.0-rc5+ #139
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.2  D28384 12037   9920 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
 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
 packet_release+0x9cf/0xcb0 net/packet/af_packet.c:3040
 __sock_release+0xce/0x280 net/socket.c:590
 sock_close+0x1e/0x30 net/socket.c:1268
 __fput+0x2ff/0x890 fs/file_table.c:280
 ____fput+0x16/0x20 fs/file_table.c:313
 task_work_run+0x145/0x1c0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_usermode_loop+0x316/0x380 arch/x86/entry/common.c:163
 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:274 [inline]
 do_syscall_64+0x5a9/0x6a0 arch/x86/entry/common.c:299
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x413511
Code: eb 27 4d 8d 6b 08 44 0f b6 36 49 89 cf 4c 89 d9 49 d3 e6 48 83 f9 40 4c 89 f9 4d 19 ff 4d 21 f7 4d 09 fc 48 ff c6 4d 89 eb 4d <39> cb 72 d4 4c 89 c6 49 c1 e8 03 4f 8d 0c 00 49 83 f9 39 0f 87 74
RSP: 002b:0000000000a6fbf0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 000000000000000d RCX: 0000000000413511
RDX: 0000000000000000 RSI: 0000000000000081 RDI: 000000000000000c
RBP: 0000000000000000 R08: 0000000000762b28 R09: ffffffffffffffff
R10: 0000000000a6fcc0 R11: 0000000000000293 R12: 000000000075bfc8
R13: 0000000000000001 R14: 0000000000762b30 R15: ffffffffffffffff
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 1057 Comm: khungtaskd Not tainted 5.3.0-rc5+ #139
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 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60

Crashes (159):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/08/22 06:48 upstream bb7ba8069de9 984250d5 .config console log report ci-upstream-kasan-gce
2019/08/19 10:42 upstream d1abaeb3be7b b8ceabfc .config console log report ci-upstream-kasan-gce
2019/08/08 14:21 upstream ecb095bff5d4 e6ebef88 .config console log report ci-upstream-kasan-gce
2019/07/17 15:25 upstream 0a8ad0ffa4d8 f613a7c4 .config console log report ci-upstream-kasan-gce-smack-root
2019/04/04 02:46 upstream 8ed86627f715 d6fc4177 .config console log report ci-upstream-kasan-gce-root
2019/03/05 18:40 upstream 63bdf4284c38 16559f86 .config console log report ci-upstream-kasan-gce-selinux-root
2019/08/09 19:48 upstream b678c568c561 ede31a9b .config console log report ci-upstream-kasan-gce-386
2019/08/06 20:35 upstream 0eb0ce0a78e1 c6f01e54 .config console log report ci-upstream-kasan-gce-386
2019/10/15 20:20 bpf 9e8acd9c44a0 b5268b89 .config console log report ci-upstream-bpf-kasan-gce
2019/10/02 09:39 net-old a761129e3625 2e29b534 .config console log report ci-upstream-net-this-kasan-gce
2019/09/03 18:31 bpf e33b4325e60e 48448e71 .config console log report ci-upstream-bpf-kasan-gce
2019/08/07 05:23 bpf cb8ffde5694a c6f01e54 .config console log report ci-upstream-bpf-kasan-gce
2019/07/12 06:39 bpf 9d1bc24b52fb baa5258a .config console log report ci-upstream-bpf-kasan-gce
2019/06/24 23:39 bpf 20f6239d494b 82c13b6b .config console log report ci-upstream-bpf-kasan-gce
2019/06/23 07:52 bpf 56f0f84e69c7 34bf9440 .config console log report ci-upstream-bpf-kasan-gce
2019/06/23 04:35 bpf 56f0f84e69c7 34bf9440 .config console log report ci-upstream-bpf-kasan-gce
2019/06/16 02:51 bpf fe8d9571dc50 442206d7 .config console log report ci-upstream-bpf-kasan-gce
2019/06/15 22:04 bpf 86723c864063 442206d7 .config console log report ci-upstream-bpf-kasan-gce
2019/06/14 08:53 bpf 09f6ac2c31f3 998ccc76 .config console log report ci-upstream-bpf-kasan-gce
2019/06/14 01:08 bpf 0e265747491c a139f92f .config console log report ci-upstream-bpf-kasan-gce
2019/06/11 07:56 bpf 38e406f600a2 0159583c .config console log report ci-upstream-bpf-kasan-gce
2019/06/05 12:03 net-old f4cfcfbdf03c bfb4a51e .config console log report ci-upstream-net-this-kasan-gce
2019/06/01 17:21 bpf 0b21b5502f56 53c81ea5 .config console log report ci-upstream-bpf-kasan-gce
2019/05/23 18:19 bpf 186bcc3dcd10 0dadcd9d .config console log report ci-upstream-bpf-kasan-gce
2019/05/21 08:24 bpf 6a0a923dfa14 8285069f .config console log report ci-upstream-bpf-kasan-gce
2019/05/20 21:31 net-old f49aa1de9836 8285069f .config console log report ci-upstream-net-this-kasan-gce
2019/04/21 20:34 bpf fed68833fc53 b0e8efcb .config console log report ci-upstream-bpf-kasan-gce
2018/09/12 22:01 bpf 4b1c5d917d34 71907daf .config console log report ci-upstream-bpf-kasan-gce
2019/09/30 09:01 bpf-next b41dae061bbd c1ad5441 .config console log report ci-upstream-bpf-next-kasan-gce
2019/09/24 09:11 net-next-old b41dae061bbd c68252d2 .config console log report ci-upstream-net-kasan-gce
2019/09/21 13:08 net-next-old b41dae061bbd d96e88f3 .config console log report ci-upstream-net-kasan-gce
2019/09/20 09:24 bpf-next b41dae061bbd 4d3ae0b7 .config console log report ci-upstream-bpf-next-kasan-gce
2019/09/18 04:44 net-next-old 1bab8d4c488b 03e0d245 .config console log report ci-upstream-net-kasan-gce
2019/09/17 07:38 bpf-next 40ba6a12a548 51ca0454 .config console log report ci-upstream-bpf-next-kasan-gce
2019/09/15 21:01 bpf-next a2c11b034142 32d59357 .config console log report ci-upstream-bpf-next-kasan-gce
2019/09/06 06:12 net-next-old 0e5b36bc4c1f 040fda58 .config console log report ci-upstream-net-kasan-gce
2019/09/04 05:34 bpf-next 110509df4540 526709ff .config console log report ci-upstream-bpf-next-kasan-gce
2019/08/21 00:23 net-next-old 932630fa9028 cfc9868f .config console log report ci-upstream-net-kasan-gce
2019/08/18 03:29 bpf-next 929ffa6e9df0 55bf8926 .config console log report ci-upstream-bpf-next-kasan-gce
2019/08/17 12:42 bpf-next e03250061b54 8fd428a1 .config console log report ci-upstream-bpf-next-kasan-gce
2019/07/24 01:10 net-next-old 31cc088a4f5d de453f34 .config console log report ci-upstream-net-kasan-gce
2019/07/22 16:28 bpf-next 192f0f8e9db7 b3c615f5 .config console log report ci-upstream-bpf-next-kasan-gce
2019/06/26 14:04 bpf-next 9cda7807ee1e 4d342240 .config console log report ci-upstream-bpf-next-kasan-gce
2019/06/17 19:21 net-next-old f464100f5766 442206d7 .config console log report ci-upstream-net-kasan-gce
2019/06/15 02:05 bpf-next 8ffc56c2632b 442206d7 .config console log report ci-upstream-bpf-next-kasan-gce
2019/06/10 01:47 bpf-next 4ecabd55c904 0159583c .config console log report ci-upstream-bpf-next-kasan-gce
2019/06/01 07:03 bpf-next d168286d773c 53c81ea5 .config console log report ci-upstream-bpf-next-kasan-gce
2019/05/27 08:49 bpf-next d9a6f413f8c7 85c57315 .config console log report ci-upstream-bpf-next-kasan-gce
2019/05/20 19:51 bpf-next 35c99ffa20ed 8285069f .config console log report ci-upstream-bpf-next-kasan-gce
2019/05/20 14:16 bpf-next 35c99ffa20ed 5a4461b0 .config console log report ci-upstream-bpf-next-kasan-gce
2019/05/19 07:00 bpf-next 35c99ffa20ed 5a4461b0 .config console log report ci-upstream-bpf-next-kasan-gce
2019/05/18 01:13 bpf-next 35c99ffa20ed 40046286 .config console log report ci-upstream-bpf-next-kasan-gce
2019/05/15 11:46 bpf-next 35c99ffa20ed 3345130d .config console log report ci-upstream-bpf-next-kasan-gce
2019/05/11 15:31 net-next-old b970afcfcabd 46caad94 .config console log report ci-upstream-net-kasan-gce
2019/05/10 08:15 bpf-next 80f232121b69 018207ef .config console log report ci-upstream-bpf-next-kasan-gce
2019/04/21 23:45 net-next-old 4e54507ab1a9 b0e8efcb .config console log report ci-upstream-net-kasan-gce
2019/08/28 02:02 linux-next ed2393ca0910 fd37b39e .config console log report ci-upstream-linux-next-kasan-gce-root
2019/06/26 15:45 linux-next 1dd45f170b7e 4d342240 .config console log report ci-upstream-linux-next-kasan-gce-root
2019/04/22 02:21 linux-next 3f018f4a019a b0e8efcb .config console log report ci-upstream-linux-next-kasan-gce-root
* Struck through repros no longer work on HEAD.