INFO: task kworker/1:11:11762 blocked for more than 143 seconds.
      Not tainted 5.10.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:11    state:D stack:27360 pid:11762 ppid:     2 flags:0x00004000
Workqueue: events mptcp_worker
Call Trace:
 context_switch kernel/sched/core.c:3779 [inline]
 __schedule+0x893/0x2130 kernel/sched/core.c:4528
 schedule+0xcf/0x270 kernel/sched/core.c:4606
 __lock_sock+0x13d/0x260 net/core/sock.c:2499
 lock_sock_nested+0xf1/0x110 net/core/sock.c:3038
 lock_sock include/net/sock.h:1590 [inline]
 mptcp_worker+0xa6/0x17a0 net/mptcp/protocol.c:2221
 process_one_work+0x933/0x15a0 kernel/workqueue.c:2272
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2418
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296

Showing all locks held in the system:
1 lock held by khungtaskd/1654:
 #0: ffffffff8b3378e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6254
2 locks held by kworker/u4:4/3055:
1 lock held by systemd-journal/4892:
3 locks held by in:imklog/8195:
 #0: ffff88801178b9f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:932
 #1: ffff8880b9f34998 (&rq->lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1292 [inline]
 #1: ffff8880b9f34998 (&rq->lock){-.-.}-{2:2}, at: __schedule+0x21a/0x2130 kernel/sched/core.c:4446
 #2: ffff8880b9f20048 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x305/0x440 kernel/sched/psi.c:833
2 locks held by kworker/1:11/11762:
 #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
 #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
 #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline]
 #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline]
 #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 kernel/workqueue.c:2243
 #1: ffffc90016e77da8 ((work_completion)(&msk->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 kernel/workqueue.c:2247
1 lock held by syz-executor.1/20453:

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

NMI backtrace for cpu 0
CPU: 0 PID: 1654 Comm: khungtaskd Not tainted 5.10.0-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+0x107/0x163 lib/dump_stack.c:118
 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: 3055 Comm: kworker/u4:4 Not tainted 5.10.0-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:rcu_read_lock include/linux/rcupdate.h:642 [inline]
RIP: 0010:batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:407 [inline]
RIP: 0010:batadv_nc_worker+0x157/0xe50 net/batman-adv/network-coding.c:718
Code: e8 9e 94 56 00 31 ff 89 c5 89 c6 e8 13 a7 de f8 85 ed 58 74 1e e8 b9 ae de f8 0f b6 2d 68 6f 47 04 31 ff 89 ee e8 b9 a6 de f8 <40> 84 ed 0f 84 bc 08 00 00 e8 9b ae de f8 48 89 d8 48 c1 e8 03 42
RSP: 0018:ffffc90001f4fc90 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff888013abcf00 RCX: ffffffff889155f7
RDX: 0000000000000000 RSI: ffff88801a27b480 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8ebb3667
R10: 0000000000000000 R11: 0000000000000000 R12: ffffc90001f4fda8
R13: 0000000000000000 R14: dffffc0000000000 R15: 00000000000001e0
FS:  0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb142926000 CR3: 0000000011876000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 process_one_work+0x933/0x15a0 kernel/workqueue.c:2272
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2418
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296