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INFO: task hung in sock_do_ioctl (2)

Status: auto-closed as invalid on 2020/06/14 04:13
Subsystems: net
[Documentation on labels]
First crash: 1502d, last: 1502d
▶ ▼ Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in sock_do_ioctl (4) wireless 2 993d 1052d 0/26 auto-closed as invalid on 2021/11/04 14:07
linux-4.19 INFO: task hung in sock_do_ioctl 3 1462d 1507d 0/1 auto-closed as invalid on 2020/08/22 19:50
upstream INFO: task hung in sock_do_ioctl net 6 1668d 2055d 0/26 closed as invalid on 2019/10/23 07:22
upstream INFO: task hung in sock_do_ioctl (3) net 11 1176d 1395d 0/26 auto-closed as invalid on 2021/05/17 11:26

Sample crash report:
INFO: task syz-executor.4:489 blocked for more than 143 seconds.
      Not tainted 5.6.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.4  D27440   489   9859 0x00004004
Call Trace:
 schedule+0xd0/0x2a0 kernel/sched/core.c:4154
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4213
 __mutex_lock_common kernel/locking/mutex.c:1033 [inline]
 __mutex_lock+0x7ab/0x13c0 kernel/locking/mutex.c:1103
 sock_do_ioctl+0x24e/0x2f0 net/socket.c:1066
 sock_ioctl+0x3ed/0x790 net/socket.c:1204
 vfs_ioctl fs/ioctl.c:47 [inline]
 ksys_ioctl+0x11a/0x180 fs/ioctl.c:763
 __do_sys_ioctl fs/ioctl.c:772 [inline]
 __se_sys_ioctl fs/ioctl.c:770 [inline]
 __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:770
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c849
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f176f031c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f176f0326d4 RCX: 000000000045c849
RDX: 0000000000400200 RSI: 0000000000008912 RDI: 0000000000000004
RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000040e R14: 00000000004c6af6 R15: 000000000076bf0c
INFO: task syz-executor.0:592 blocked for more than 144 seconds.
      Not tainted 5.6.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0  D27440   592   9843 0x00000004
Call Trace:
 schedule+0xd0/0x2a0 kernel/sched/core.c:4154
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4213
 __mutex_lock_common kernel/locking/mutex.c:1033 [inline]
 __mutex_lock+0x7ab/0x13c0 kernel/locking/mutex.c:1103
 sock_do_ioctl+0x24e/0x2f0 net/socket.c:1066
 sock_ioctl+0x3ed/0x790 net/socket.c:1204
 vfs_ioctl fs/ioctl.c:47 [inline]
 ksys_ioctl+0x11a/0x180 fs/ioctl.c:763
 __do_sys_ioctl fs/ioctl.c:772 [inline]
 __se_sys_ioctl fs/ioctl.c:770 [inline]
 __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:770
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c849
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007faff1e60c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007faff1e616d4 RCX: 000000000045c849
RDX: 0000000000400200 RSI: 0000000000008912 RDI: 0000000000000004
RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000040e R14: 00000000004c6af6 R15: 000000000076bf0c
INFO: task syz-executor.3:915 blocked for more than 144 seconds.
      Not tainted 5.6.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.3  D29904   915   9854 0x00004004
Call Trace:
 schedule+0xd0/0x2a0 kernel/sched/core.c:4154
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4213
 __mutex_lock_common kernel/locking/mutex.c:1033 [inline]
 __mutex_lock+0x7ab/0x13c0 kernel/locking/mutex.c:1103
 sock_do_ioctl+0x24e/0x2f0 net/socket.c:1066
 sock_ioctl+0x3ed/0x790 net/socket.c:1204
 vfs_ioctl fs/ioctl.c:47 [inline]
 ksys_ioctl+0x11a/0x180 fs/ioctl.c:763
 __do_sys_ioctl fs/ioctl.c:772 [inline]
 __se_sys_ioctl fs/ioctl.c:770 [inline]
 __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:770
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c849
Code: 24 78 48 39 c2 74 12 c6 84 24 90 00 00 00 00 48 8b 6c 24 58 48 83 c4 60 c3 48 8b 44 24 70 48 89 04 24 48 89 4c 24 08 48 89 54 <24> 10 e8 d0 5c fa ff 80 7c 24 18 00 74 cf 48 8b 44 24 38 48 8b 48
RSP: 002b:00007fbf1c6e6c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fbf1c6e76d4 RCX: 000000000045c849
RDX: 0000000000400200 RSI: 0000000000008912 RDI: 0000000000000004
RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000040e R14: 00000000004c6af6 R15: 000000000076bf0c

Showing all locks held in the system:
3 locks held by kworker/0:0/5:
 #0: ffff888099d38928 ((wq_completion)ipv6_addrconf){+.+.}, at: __write_once_size include/linux/compiler.h:226 [inline]
 #0: ffff888099d38928 ((wq_completion)ipv6_addrconf){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff888099d38928 ((wq_completion)ipv6_addrconf){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline]
 #0: ffff888099d38928 ((wq_completion)ipv6_addrconf){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline]
 #0: ffff888099d38928 ((wq_completion)ipv6_addrconf){+.+.}, at: set_work_data kernel/workqueue.c:615 [inline]
 #0: ffff888099d38928 ((wq_completion)ipv6_addrconf){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:642 [inline]
 #0: ffff888099d38928 ((wq_completion)ipv6_addrconf){+.+.}, at: process_one_work+0x82a/0x1690 kernel/workqueue.c:2237
 #1: ffffc90000cbfdd0 ((addr_chk_work).work){+.+.}, at: process_one_work+0x85e/0x1690 kernel/workqueue.c:2241
 #2: ffffffff8a34eb80 (rtnl_mutex){+.+.}, at: addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4526
5 locks held by kworker/u4:0/7:
1 lock held by khungtaskd/1064:
 #0: ffffffff897accc0 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:5331
1 lock held by rsyslogd/9714:
 #0: ffff8880938b2e20 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xe3/0x100 fs/file.c:821
2 locks held by getty/9806:
 #0: ffff8880a70fe090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:267
 #1: ffffc9000176b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21d/0x1b30 drivers/tty/n_tty.c:2156
2 locks held by getty/9807:
 #0: ffff8880a1e04090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:267
 #1: ffffc900017bb2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21d/0x1b30 drivers/tty/n_tty.c:2156
2 locks held by getty/9808:
 #0: ffff8880a4465090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:267
 #1: ffffc900017cb2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21d/0x1b30 drivers/tty/n_tty.c:2156
2 locks held by getty/9809:
 #0: ffff88808dd99090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:267
 #1: ffffc9000174b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21d/0x1b30 drivers/tty/n_tty.c:2156
2 locks held by getty/9810:
 #0: ffff8880a7d4c090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:267
 #1: ffffc9000175b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21d/0x1b30 drivers/tty/n_tty.c:2156
2 locks held by getty/9811:
 #0: ffff88809e97b090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:267
 #1: ffffc900017ab2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21d/0x1b30 drivers/tty/n_tty.c:2156
2 locks held by getty/9812:
 #0: ffff8880a238e090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:267
 #1: ffffc900017032e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21d/0x1b30 drivers/tty/n_tty.c:2156
5 locks held by kworker/u4:4/14340:
3 locks held by kworker/0:2/4361:
 #0: ffff8880aa026d28 ((wq_completion)events){+.+.}, at: __write_once_size include/linux/compiler.h:226 [inline]
 #0: ffff8880aa026d28 ((wq_completion)events){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880aa026d28 ((wq_completion)events){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline]
 #0: ffff8880aa026d28 ((wq_completion)events){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline]
 #0: ffff8880aa026d28 ((wq_completion)events){+.+.}, at: set_work_data kernel/workqueue.c:615 [inline]
 #0: ffff8880aa026d28 ((wq_completion)events){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:642 [inline]
 #0: ffff8880aa026d28 ((wq_completion)events){+.+.}, at: process_one_work+0x82a/0x1690 kernel/workqueue.c:2237
 #1: ffffc90001b2fdd0 (deferred_process_work){+.+.}, at: process_one_work+0x85e/0x1690 kernel/workqueue.c:2241
 #2: ffffffff8a34eb80 (rtnl_mutex){+.+.}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:74
3 locks held by kworker/0:1/14164:
 #0: ffff8880aa026d28 ((wq_completion)events){+.+.}, at: __write_once_size include/linux/compiler.h:226 [inline]
 #0: ffff8880aa026d28 ((wq_completion)events){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880aa026d28 ((wq_completion)events){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline]
 #0: ffff8880aa026d28 ((wq_completion)events){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline]
 #0: ffff8880aa026d28 ((wq_completion)events){+.+.}, at: set_work_data kernel/workqueue.c:615 [inline]
 #0: ffff8880aa026d28 ((wq_completion)events){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:642 [inline]
 #0: ffff8880aa026d28 ((wq_completion)events){+.+.}, at: process_one_work+0x82a/0x1690 kernel/workqueue.c:2237
 #1: ffffc9000c797dd0 ((linkwatch_work).work){+.+.}, at: process_one_work+0x85e/0x1690 kernel/workqueue.c:2241
 #2: ffffffff8a34eb80 (rtnl_mutex){+.+.}, at: linkwatch_event+0xb/0x60 net/core/link_watch.c:242
6 locks held by syz-executor.1/32763:
1 lock held by syz-executor.4/489:
 #0: ffffffff8a34eb80 (rtnl_mutex){+.+.}, at: sock_do_ioctl+0x24e/0x2f0 net/socket.c:1066
1 lock held by syz-executor.0/592:
 #0: ffffffff8a34eb80 (rtnl_mutex){+.+.}, at: sock_do_ioctl+0x24e/0x2f0 net/socket.c:1066
1 lock held by syz-executor.3/915:
 #0: ffffffff8a34eb80 (rtnl_mutex){+.+.}, at: sock_do_ioctl+0x24e/0x2f0 net/socket.c:1066
1 lock held by syz-executor.5/1017:
 #0: ffffffff8a34eb80 (rtnl_mutex){+.+.}, at: sock_do_ioctl+0x24e/0x2f0 net/socket.c:1066
1 lock held by syz-executor.2/1122:
 #0: ffffffff8a34eb80 (rtnl_mutex){+.+.}, at: sock_do_ioctl+0x24e/0x2f0 net/socket.c:1066

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

NMI backtrace for cpu 0
CPU: 0 PID: 1064 Comm: khungtaskd Not tainted 5.6.0-rc5-syzkaller #0
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+0x188/0x20d lib/dump_stack.c:118
 nmi_cpu_backtrace.cold+0x70/0xb1 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x231/0x27e lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline]
 watchdog+0xa8c/0x1010 kernel/hung_task.c:289
 kthread+0x357/0x430 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
CPU: 1 PID: 7 Comm: kworker/u4:0 Not tainted 5.6.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:debug_smp_processor_id+0x0/0x185 lib/smp_processor_id.c:56
Code: c7 b8 b4 73 89 e8 d0 85 1c fe e9 e3 fe ff ff 48 c7 c7 44 9b 65 8a e8 af 85 1c fe eb 87 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 <41> 54 53 e8 d8 c7 df fd 65 44 8b 25 10 56 6f 7c 65 8b 1d 31 c1 6f
RSP: 0018:ffffc90000cdfcc0 EFLAGS: 00000292
RAX: ffff8880a95de1c0 RBX: 00000000000382c0 RCX: ffffffff879e390d
RDX: 0000000000000000 RSI: ffffffff879e3b96 RDI: 0000000000000001
RBP: ffff888055fe4b80 R08: ffff8880a95de1c0 R09: ffffed1015ce7074
R10: ffffed1015ce7073 R11: ffff8880ae73839b R12: 0000000000000001
R13: 00000000000002cb R14: dffffc0000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600400 CR3: 00000000a8e5f000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 rcu_dynticks_curr_cpu_in_eqs+0x12/0xb0 kernel/rcu/tree.c:299
 rcu_is_watching+0xc/0x20 kernel/rcu/tree.c:919
 rcu_read_unlock include/linux/rcupdate.h:651 [inline]
 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:411 [inline]
 batadv_nc_worker+0x47b/0x760 net/batman-adv/network-coding.c:718
 process_one_work+0x94b/0x1690 kernel/workqueue.c:2266
 worker_thread+0x96/0xe20 kernel/workqueue.c:2412
 kthread+0x357/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2020/03/16 04:12 upstream a42a7bb6f536 749688d2 .config console log report ci-upstream-kasan-gce-root
* Struck through repros no longer work on HEAD.