INFO: task kworker/u4:2:46 blocked for more than 143 seconds.
Not tainted 5.11.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:2 state:D stack:25192 pid: 46 ppid: 2 flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
context_switch kernel/sched/core.c:4327 [inline]
__schedule+0x90c/0x21a0 kernel/sched/core.c:5078
schedule+0xcf/0x270 kernel/sched/core.c:5157
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5216
__mutex_lock_common kernel/locking/mutex.c:1033 [inline]
__mutex_lock+0x81a/0x1110 kernel/locking/mutex.c:1103
ip_fib_net_exit+0x1b/0x2b0 net/ipv4/fib_frontend.c:1544
ops_exit_list+0xb0/0x160 net/core/net_namespace.c:187
cleanup_net+0x4ea/0xb10 net/core/net_namespace.c:604
process_one_work+0x98d/0x15f0 kernel/workqueue.c:2275
worker_thread+0x64c/0x1120 kernel/workqueue.c:2421
kthread+0x3b1/0x4a0 kernel/kthread.c:292
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
INFO: task kworker/0:2:2990 blocked for more than 143 seconds.
Not tainted 5.11.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:2 state:D stack:26480 pid: 2990 ppid: 2 flags:0x00004000
Workqueue: events linkwatch_event
Call Trace:
context_switch kernel/sched/core.c:4327 [inline]
__schedule+0x90c/0x21a0 kernel/sched/core.c:5078
schedule+0xcf/0x270 kernel/sched/core.c:5157
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5216
__mutex_lock_common kernel/locking/mutex.c:1033 [inline]
__mutex_lock+0x81a/0x1110 kernel/locking/mutex.c:1103
linkwatch_event+0xb/0x60 net/core/link_watch.c:250
process_one_work+0x98d/0x15f0 kernel/workqueue.c:2275
worker_thread+0x64c/0x1120 kernel/workqueue.c:2421
kthread+0x3b1/0x4a0 kernel/kthread.c:292
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
INFO: task syz-executor.1:11749 blocked for more than 143 seconds.
Not tainted 5.11.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:27592 pid:11749 ppid: 8436 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4327 [inline]
__schedule+0x90c/0x21a0 kernel/sched/core.c:5078
schedule+0xcf/0x270 kernel/sched/core.c:5157
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5216
__mutex_lock_common kernel/locking/mutex.c:1033 [inline]
__mutex_lock+0x81a/0x1110 kernel/locking/mutex.c:1103
ip_mroute_setsockopt+0xc6/0x12e0 net/ipv4/ipmr.c:1360
do_ip_setsockopt net/ipv4/ip_sockglue.c:940 [inline]
ip_setsockopt+0x43f/0x3a20 net/ipv4/ip_sockglue.c:1423
raw_setsockopt+0x274/0x2c0 net/ipv4/raw.c:857
__sys_setsockopt+0x2db/0x610 net/socket.c:2115
__do_sys_setsockopt net/socket.c:2126 [inline]
__se_sys_setsockopt net/socket.c:2123 [inline]
__x64_sys_setsockopt+0xba/0x150 net/socket.c:2123
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x465d99
RSP: 002b:00007f869b11b188 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 000000000056c008 RCX: 0000000000465d99
RDX: 00000000000000cb RSI: 0000000000000000 RDI: 0000000000000008
RBP: 00000000004bcf27 R08: 0000000000000010 R09: 0000000000000000
R10: 0000000020000000 R11: 0000000000000246 R12: 000000000056c008
R13: 00007ffcb3af533f R14: 00007f869b11b300 R15: 0000000000022000
INFO: task syz-executor.0:11762 blocked for more than 144 seconds.
Not tainted 5.11.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:28104 pid:11762 ppid: 8434 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4327 [inline]
__schedule+0x90c/0x21a0 kernel/sched/core.c:5078
schedule+0xcf/0x270 kernel/sched/core.c:5157
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5216
__mutex_lock_common kernel/locking/mutex.c:1033 [inline]
__mutex_lock+0x81a/0x1110 kernel/locking/mutex.c:1103
rtnl_lock net/core/rtnetlink.c:72 [inline]
rtnetlink_rcv_msg+0x3f9/0xad0 net/core/rtnetlink.c:5550
netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2494
netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline]
netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330
netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1919
sock_sendmsg_nosec net/socket.c:652 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:672
____sys_sendmsg+0x331/0x810 net/socket.c:2345
___sys_sendmsg+0xf3/0x170 net/socket.c:2399
__sys_sendmmsg+0x195/0x470 net/socket.c:2489
__do_sys_sendmmsg net/socket.c:2518 [inline]
__se_sys_sendmmsg net/socket.c:2515 [inline]
__x64_sys_sendmmsg+0x99/0x100 net/socket.c:2515
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x465d99
RSP: 002b:00007fd7be792188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465d99
RDX: 010efe10675dec16 RSI: 0000000020000200 RDI: 0000000000000003
RBP: 00000000004bcf27 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007fff8d28f79f R14: 00007fd7be792300 R15: 0000000000022000
Showing all locks held in the system:
3 locks held by kworker/0:1/7:
#0: ffff888147aced38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888147aced38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
#0: ffff888147aced38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
#0: ffff888147aced38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline]
#0: ffff888147aced38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline]
#0: ffff888147aced38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x871/0x15f0 kernel/workqueue.c:2246
#1: ffffc90000cdfda8 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15f0 kernel/workqueue.c:2250
#2: ffffffff8d45bce8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4570
4 locks held by kworker/u4:2/46:
#0: ffff888140c86138 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888140c86138 ((wq_completion)netns){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
#0: ffff888140c86138 ((wq_completion)netns){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
#0: ffff888140c86138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline]
#0: ffff888140c86138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline]
#0: ffff888140c86138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x871/0x15f0 kernel/workqueue.c:2246
#1: ffffc90000ed7da8 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15f0 kernel/workqueue.c:2250
#2: ffffffff8d448890 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x9b/0xb10 net/core/net_namespace.c:566
#3: ffffffff8d45bce8 (rtnl_mutex){+.+.}-{3:3}, at: ip_fib_net_exit+0x1b/0x2b0 net/ipv4/fib_frontend.c:1544
3 locks held by kworker/u4:4/196:
#0: ffff8880b9d34d18 (&rq->lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1320 [inline]
#0: ffff8880b9d34d18 (&rq->lock){-.-.}-{2:2}, at: __schedule+0x217/0x21a0 kernel/sched/core.c:4995
#1: ffffc900012e7da8 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15f0 kernel/workqueue.c:2250
#2: ffff8880b9d24898 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x5a/0x1f0 kernel/time/timer.c:944
1 lock held by khungtaskd/1648:
#0: ffffffff8bd73da0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6259
3 locks held by kworker/0:2/2990:
#0: ffff888010c63d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888010c63d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
#0: ffff888010c63d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
#0: ffff888010c63d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline]
#0: ffff888010c63d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline]
#0: ffff888010c63d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x871/0x15f0 kernel/workqueue.c:2246
#1: ffffc90000f97da8 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15f0 kernel/workqueue.c:2250
#2: ffffffff8d45bce8 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xb/0x60 net/core/link_watch.c:250
1 lock held by in:imklog/8119:
#0: ffff888015586130 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:947
2 locks held by syz-executor.4/11745:
1 lock held by syz-executor.1/11749:
#0: ffffffff8d45bce8 (rtnl_mutex){+.+.}-{3:3}, at: ip_mroute_setsockopt+0xc6/0x12e0 net/ipv4/ipmr.c:1360
1 lock held by syz-executor.0/11762:
#0: ffffffff8d45bce8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
#0: ffffffff8d45bce8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3f9/0xad0 net/core/rtnetlink.c:5550
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 1648 Comm: khungtaskd Not tainted 5.11.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:79 [inline]
dump_stack+0x107/0x163 lib/dump_stack.c:120
nmi_cpu_backtrace.cold+0x44/0xd7 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:209 [inline]
watchdog+0xd43/0xfa0 kernel/hung_task.c:294
kthread+0x3b1/0x4a0 kernel/kthread.c:292
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 11745 Comm: syz-executor.4 Not tainted 5.11.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__sanitizer_cov_trace_pc+0x4c/0x60 kernel/kcov.c:202
Code: 0e 85 c9 74 35 8b 82 cc 14 00 00 85 c0 74 2b 8b 82 a8 14 00 00 83 f8 02 75 20 48 8b 8a b0 14 00 00 8b 92 ac 14 00 00 48 8b 01 <48> 83 c0 01 48 39 c2 76 07 48 89 34 c1 48 89 01 c3 0f 1f 00 41 55
RSP: 0018:ffffc90001d86d90 EFLAGS: 00000246
RAX: 000000000003ffff RBX: ffff88807c993580 RCX: ffffc90011758000
RDX: 0000000000040000 RSI: ffffffff83da18c1 RDI: 0000000000000003
RBP: dffffc0000000000 R08: 0000000000000002 R09: 0000000000000012
R10: ffffffff83da196b R11: 0000000000000000 R12: ffff88807c993842
R13: 0000000000000012 R14: 0000000020000080 R15: ffff88807c9935a8
FS: 00007f19ceaab700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efd8287b000 CR3: 0000000012c89000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
radix_tree_is_internal_node include/linux/radix-tree.h:55 [inline]
__radix_tree_lookup+0xf1/0x2a0 lib/radix-tree.c:760
tcf_idr_check_alloc+0xb0/0x3b0 net/sched/act_api.c:551
tcf_police_init+0x34f/0x1460 net/sched/act_police.c:81
tcf_action_init_1+0x1a3/0x990 net/sched/act_api.c:1013
tcf_exts_validate+0x138/0x420 net/sched/cls_api.c:3046
route4_set_parms net/sched/cls_route.c:393 [inline]
route4_change+0x6d8/0x2380 net/sched/cls_route.c:512
tc_new_tfilter+0x1394/0x2120 net/sched/cls_api.c:2127
rtnetlink_rcv_msg+0x80e/0xad0 net/core/rtnetlink.c:5544
netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2494
netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline]
netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330
netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1919
sock_sendmsg_nosec net/socket.c:652 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:672
____sys_sendmsg+0x331/0x810 net/socket.c:2345
___sys_sendmsg+0xf3/0x170 net/socket.c:2399
__sys_sendmmsg+0x195/0x470 net/socket.c:2489
__do_sys_sendmmsg net/socket.c:2518 [inline]
__se_sys_sendmmsg net/socket.c:2515 [inline]
__x64_sys_sendmmsg+0x99/0x100 net/socket.c:2515
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x465d99
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f19ceaab188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 000000000056c008 RCX: 0000000000465d99
RDX: 010efe10675dec16 RSI: 0000000020000200 RDI: 0000000000000003
RBP: 00000000004bcf27 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c008
R13: 00007ffdf0666b7f R14: 00007f19ceaab300 R15: 0000000000022000