INFO: task kworker/u4:11:5286 blocked for more than 143 seconds.
Not tainted 6.1.0-syzkaller-13822-g6feb57c2fd7c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:11 state:D stack:25560 pid:5286 ppid:2 flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0xb8a/0x5450 kernel/sched/core.c:6555
schedule+0xde/0x1b0 kernel/sched/core.c:6631
rxrpc_destroy_all_calls+0x1ee/0x640 net/rxrpc/call_object.c:733
rxrpc_exit_net+0x15c/0x300 net/rxrpc/net_ns.c:125
ops_exit_list+0xb0/0x170 net/core/net_namespace.c:169
cleanup_net+0x4ee/0xb10 net/core/net_namespace.c:606
process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289
worker_thread+0x669/0x1090 kernel/workqueue.c:2436
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/11:
#0: ffffffff8c78dcb0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/12:
#0: ffffffff8c78d9b0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/27:
#0: ffffffff8c78e800 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x57/0x264 kernel/locking/lockdep.c:6494
2 locks held by getty/4742:
#0: ffff88814a356098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc900020482f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
3 locks held by kworker/u4:11/5286:
#0: ffff888012776138 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012776138 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012776138 ((wq_completion)netns){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012776138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff888012776138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff888012776138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
#1: ffffc9000450fda8 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
#2: ffffffff8e0a0d10 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x9f/0xb10 net/core/net_namespace.c:568
2 locks held by kworker/1:9/6564:
#0: ffff888012479538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012479538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012479538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012479538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff888012479538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff888012479538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
#1: ffffc900035cfda8 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
2 locks held by kworker/u4:28/9566:
#0: ffff8880b993b5d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2f/0x120 kernel/sched/core.c:537
#1: ffffc9000607fda8 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
2 locks held by syz-executor.2/10769:
2 locks held by syz-executor.0/10768:
#0: ffffffff8e0a0d10 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2f8/0x6b0 net/core/net_namespace.c:479
#1: ffffffff8c7994b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
#1: ffffffff8c7994b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x5df/0x780 kernel/rcu/tree_exp.h:946
2 locks held by syz-executor.5/10772:
2 locks held by syz-executor.1/10774:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 6.1.0-syzkaller-13822-g6feb57c2fd7c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x24/0x18a lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x333/0x3c0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xc75/0xfc0 kernel/hung_task.c:377
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4386 Comm: jbd2/sda1-8 Not tainted 6.1.0-syzkaller-13822-g6feb57c2fd7c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:write_comp_data+0x3c/0x90 kernel/kcov.c:236
Code: 01 00 00 49 89 f8 65 48 8b 14 25 40 ac 03 00 a9 00 01 ff 00 74 0e 85 f6 74 59 8b 82 6c 15 00 00 85 c0 74 4f 8b 82 48 15 00 00 <83> f8 03 75 44 48 8b 82 50 15 00 00 8b 92 4c 15 00 00 48 8b 38 48
RSP: 0018:ffffc9000333f470 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff88823bced000 RCX: ffffffff81cdf1c0
RDX: ffff888027bf0180 RSI: 0000000000000000 RDI: 0000000000000006
RBP: dffffc0000000000 R08: 0000000000000006 R09: ffff88823bced000
R10: ffff88823bcec686 R11: 0000000000000001 R12: ffff88823bcec000
R13: ffff88823bcec000 R14: ffff88823bcec686 R15: 00000000ffffffaf
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e4ffd69280 CR3: 000000000c48e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
for_each_canary mm/kfence/core.c:348 [inline]
kfence_guarded_alloc mm/kfence/core.c:437 [inline]
__kfence_alloc+0x1020/0x15b0 mm/kfence/core.c:1028
kfence_alloc include/linux/kfence.h:128 [inline]
slab_alloc_node mm/slab.c:3249 [inline]
slab_alloc mm/slab.c:3270 [inline]
__kmem_cache_alloc_lru mm/slab.c:3447 [inline]
kmem_cache_alloc+0x1de/0x460 mm/slab.c:3456
mempool_alloc+0x158/0x360 mm/mempool.c:398
bio_alloc_bioset+0x41e/0x900 block/bio.c:544
bio_alloc include/linux/bio.h:423 [inline]
submit_bh_wbc+0x281/0x650 fs/buffer.c:2682
journal_submit_commit_record.part.0+0x6eb/0x9e0 fs/jbd2/commit.c:160
journal_submit_commit_record fs/jbd2/commit.c:130 [inline]
jbd2_journal_commit_transaction+0x4007/0x6de0 fs/jbd2/commit.c:913
kjournald2+0x1d4/0x890 fs/jbd2/journal.c:210
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308