INFO: task kworker/0:0:20322 blocked for more than 143 seconds.
Not tainted 5.1.0-rc7+ #96
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/0:0 D26416 20322 2 0x80000000
Workqueue: events switchdev_deferred_process_work
Call Trace:
context_switch kernel/sched/core.c:2877 [inline]
__schedule+0x813/0x1cc0 kernel/sched/core.c:3518
schedule+0x92/0x180 kernel/sched/core.c:3562
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3620
__mutex_lock_common kernel/locking/mutex.c:1002 [inline]
__mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76
switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:78
process_one_work+0x98e/0x1790 kernel/workqueue.c:2269
worker_thread+0x98/0xe40 kernel/workqueue.c:2415
kthread+0x357/0x430 kernel/kthread.c:253
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
INFO: task kworker/0:3:27289 blocked for more than 144 seconds.
Not tainted 5.1.0-rc7+ #96
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/0:3 D26656 27289 2 0x80000000
Workqueue: events linkwatch_event
Call Trace:
context_switch kernel/sched/core.c:2877 [inline]
__schedule+0x813/0x1cc0 kernel/sched/core.c:3518
schedule+0x92/0x180 kernel/sched/core.c:3562
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3620
__mutex_lock_common kernel/locking/mutex.c:1002 [inline]
__mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76
linkwatch_event+0xf/0x70 net/core/link_watch.c:236
process_one_work+0x98e/0x1790 kernel/workqueue.c:2269
worker_thread+0x98/0xe40 kernel/workqueue.c:2415
kthread+0x357/0x430 kernel/kthread.c:253
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
INFO: task syz-executor.2:30291 blocked for more than 144 seconds.
Not tainted 5.1.0-rc7+ #96
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.2 D28352 30291 30088 0x80000004
Call Trace:
context_switch kernel/sched/core.c:2877 [inline]
__schedule+0x813/0x1cc0 kernel/sched/core.c:3518
schedule+0x92/0x180 kernel/sched/core.c:3562
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3620
__mutex_lock_common kernel/locking/mutex.c:1002 [inline]
__mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76
cangw_pernet_exit+0x13/0x30 net/can/gw.c:1029
ops_exit_list.isra.0+0xb0/0x160 net/core/net_namespace.c:153
setup_net+0x400/0x740 net/core/net_namespace.c:332
copy_net_ns+0x1df/0x340 net/core/net_namespace.c:438
create_new_namespaces+0x400/0x7b0 kernel/nsproxy.c:107
unshare_nsproxy_namespaces+0xc2/0x200 kernel/nsproxy.c:206
ksys_unshare+0x440/0x980 kernel/fork.c:2549
__do_sys_unshare kernel/fork.c:2617 [inline]
__se_sys_unshare kernel/fork.c:2615 [inline]
__x64_sys_unshare+0x31/0x40 kernel/fork.c:2615
do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458da9
Code: ad b8 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 b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fb67e0cfc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000458da9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb67e0d06d4
R13: 00000000004c7e4c R14: 00000000004de0c0 R15: 00000000ffffffff
Showing all locks held in the system:
1 lock held by khungtaskd/1041:
#0: 0000000076c033e5 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:5057
2 locks held by kworker/u4:3/2484:
1 lock held by rsyslogd/7719:
#0: 00000000dc876c97 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:801
2 locks held by getty/7831:
#0: 000000004a04e2ec (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 000000000db6a7aa (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156
2 locks held by getty/7832:
#0: 000000006830dcb7 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 000000008e31052f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156
2 locks held by getty/7833:
#0: 000000004b583cd3 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 000000004ca5ca03 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156
2 locks held by getty/7834:
#0: 000000000d8d1579 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 00000000083d8943 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156
2 locks held by getty/7835:
#0: 000000003e313123 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 00000000106f4868 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156
2 locks held by getty/7836:
#0: 000000008ad023f3 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 000000008950f790 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156
2 locks held by getty/7837:
#0: 000000005e3706d8 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 00000000f7ef5599 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156
2 locks held by syz-executor.4/31144:
#0: 0000000030485c0f (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 000000007c4b87a8 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156
3 locks held by kworker/1:2/32443:
#0: 0000000009b9b8a8 ((wq_completion)ipv6_addrconf){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline]
#0: 0000000009b9b8a8 ((wq_completion)ipv6_addrconf){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: 0000000009b9b8a8 ((wq_completion)ipv6_addrconf){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline]
#0: 0000000009b9b8a8 ((wq_completion)ipv6_addrconf){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline]
#0: 0000000009b9b8a8 ((wq_completion)ipv6_addrconf){+.+.}, at: set_work_data kernel/workqueue.c:619 [inline]
#0: 0000000009b9b8a8 ((wq_completion)ipv6_addrconf){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline]
#0: 0000000009b9b8a8 ((wq_completion)ipv6_addrconf){+.+.}, at: process_one_work+0x87e/0x1790 kernel/workqueue.c:2240
#1: 00000000fd33f43b ((addr_chk_work).work){+.+.}, at: process_one_work+0x8b4/0x1790 kernel/workqueue.c:2244
#2: 000000000ab4972b (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76
1 lock held by syz-executor.4/16074:
1 lock held by syz-executor.4/17101:
1 lock held by syz-executor.4/17517:
1 lock held by syz-executor.4/18965:
4 locks held by kworker/u4:6/19055:
#0: 00000000d8dd3df9 ((wq_completion)netns){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline]
#0: 00000000d8dd3df9 ((wq_completion)netns){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: 00000000d8dd3df9 ((wq_completion)netns){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline]
#0: 00000000d8dd3df9 ((wq_completion)netns){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline]
#0: 00000000d8dd3df9 ((wq_completion)netns){+.+.}, at: set_work_data kernel/workqueue.c:619 [inline]
#0: 00000000d8dd3df9 ((wq_completion)netns){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline]
#0: 00000000d8dd3df9 ((wq_completion)netns){+.+.}, at: process_one_work+0x87e/0x1790 kernel/workqueue.c:2240
#1: 000000008b5a4316 (net_cleanup_work){+.+.}, at: process_one_work+0x8b4/0x1790 kernel/workqueue.c:2244
#2: 000000005358f9c7 (pernet_ops_rwsem){++++}, at: cleanup_net+0xae/0x960 net/core/net_namespace.c:519
#3: 000000000ab4972b (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76
3 locks held by kworker/0:0/20322:
#0: 0000000027823f7b ((wq_completion)events){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline]
#0: 0000000027823f7b ((wq_completion)events){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: 0000000027823f7b ((wq_completion)events){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline]
#0: 0000000027823f7b ((wq_completion)events){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline]
#0: 0000000027823f7b ((wq_completion)events){+.+.}, at: set_work_data kernel/workqueue.c:619 [inline]
#0: 0000000027823f7b ((wq_completion)events){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline]
#0: 0000000027823f7b ((wq_completion)events){+.+.}, at: process_one_work+0x87e/0x1790 kernel/workqueue.c:2240
#1: 000000001e457b14 (deferred_process_work){+.+.}, at: process_one_work+0x8b4/0x1790 kernel/workqueue.c:2244
#2: 000000000ab4972b (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76
1 lock held by syz-executor.3/20833:
1 lock held by syz-executor.3/20856:
1 lock held by syz-executor.3/20913:
1 lock held by syz-executor.3/21244:
1 lock held by syz-executor.3/21281:
1 lock held by syz-executor.3/21578:
1 lock held by syz-executor.3/21702:
1 lock held by syz-executor.3/21790:
1 lock held by syz-executor.3/21933:
1 lock held by syz-executor.4/22753:
1 lock held by syz-executor.3/23168:
1 lock held by syz-executor.1/23357:
1 lock held by syz-executor.1/23432:
1 lock held by syz-executor.1/23651:
1 lock held by syz-executor.1/23872:
1 lock held by syz-executor.1/24194:
1 lock held by syz-executor.1/24650:
1 lock held by syz-executor.3/25642:
1 lock held by syz-executor.1/25846:
1 lock held by syz-executor.1/26863:
3 locks held by kworker/0:3/27289:
#0: 0000000027823f7b ((wq_completion)events){+.+.}, at: __write_once_size include/linux/compiler.h:220 [inline]
#0: 0000000027823f7b ((wq_completion)events){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: 0000000027823f7b ((wq_completion)events){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline]
#0: 0000000027823f7b ((wq_completion)events){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline]
#0: 0000000027823f7b ((wq_completion)events){+.+.}, at: set_work_data kernel/workqueue.c:619 [inline]
#0: 0000000027823f7b ((wq_completion)events){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline]
#0: 0000000027823f7b ((wq_completion)events){+.+.}, at: process_one_work+0x87e/0x1790 kernel/workqueue.c:2240
#1: 000000005999e7ee ((linkwatch_work).work){+.+.}, at: process_one_work+0x8b4/0x1790 kernel/workqueue.c:2244
#2: 000000000ab4972b (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76
1 lock held by syz-executor.1/27410:
1 lock held by syz-executor.3/27893:
1 lock held by syz-executor.1/28602:
1 lock held by syz-executor.4/28888:
1 lock held by syz-executor.1/29908:
2 locks held by syz-executor.2/30291:
#0: 000000005358f9c7 (pernet_ops_rwsem){++++}, at: copy_net_ns+0x1c0/0x340 net/core/net_namespace.c:434
#1: 000000000ab4972b (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 1041 Comm: khungtaskd Not tainted 5.1.0-rc7+ #96
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+0x63/0xa4 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x1be/0x236 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:204 [inline]
watchdog+0x9b7/0xec0 kernel/hung_task.c:288
kthread+0x357/0x430 kernel/kthread.c:253
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Sending NMI from CPU 0 to CPUs 1: