INFO: task syz-executor.0:12060 blocked for more than 143 seconds.
Not tainted 6.1.0-rc8-syzkaller-00154-g296a7b7eb792 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D
stack:22072 pid:12060 ppid:3661 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5209 [inline]
__schedule+0x8c9/0xd70 kernel/sched/core.c:6521
schedule+0xcb/0x190 kernel/sched/core.c:6597
request_wait_answer fs/fuse/dev.c:407 [inline]
__fuse_request_send fs/fuse/dev.c:426 [inline]
fuse_simple_request+0x1034/0x1870 fs/fuse/dev.c:511
fuse_access fs/fuse/dir.c:1292 [inline]
fuse_permission+0x85b/0xe30 fs/fuse/dir.c:1371
do_inode_permission fs/namei.c:458 [inline]
inode_permission+0x22c/0x450 fs/namei.c:525
path_permission include/linux/fs.h:2924 [inline]
__do_sys_chdir fs/open.c:518 [inline]
__se_sys_chdir+0x146/0x220 fs/open.c:508
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f5c13c8c0d9
RSP: 002b:00007f5c14a8a168 EFLAGS: 00000246 ORIG_RAX: 0000000000000050
RAX: ffffffffffffffda RBX: 00007f5c13dabf80 RCX: 00007f5c13c8c0d9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020004340
RBP: 00007f5c13ce7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffda09fb13f R14: 00007f5c14a8a300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d127330 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d127b30 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
#0: ffffffff8d127160 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3309:
#0: ffff888144ee9098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1650 drivers/tty/n_tty.c:2177
1 lock held by syz-executor.4/3670:
#0: ffffffff8d12c738 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
#0: ffffffff8d12c738 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x384/0x860 kernel/rcu/tree_exp.h:946
2 locks held by kworker/0:23/8760:
#0: ffff888012866538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc900038afd00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
2 locks held by kworker/0:30/8767:
1 lock held by syz-executor.0/12318:
#0: ffffffff8d12c738 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline]
#0: ffffffff8d12c738 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x455/0x860 kernel/rcu/tree_exp.h:946
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.1.0-rc8-syzkaller-00154-g296a7b7eb792 #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+0x1b1/0x28e lib/dump_stack.c:106
nmi_cpu_backtrace+0x46f/0x4f0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1ba/0x420 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+0xcf5/0xd40 kernel/hung_task.c:377
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 8767 Comm: kworker/0:30 Not tainted 6.1.0-rc8-syzkaller-00154-g296a7b7eb792 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Workqueue: events_power_efficient gc_worker
RIP: 0010:mark_lock+0xe7/0x350 kernel/locking/lockdep.c:4612
Code: ee 38 6e 10 00 74 4a 31 db eb 0f 48 8d 04 5b 48 c1 e0 06 48 8d 98 40 d0 28 90 48 83 c3 50 48 89 d8 48 c1 e8 03 42 80 3c 28 00 <74> 08 48 89 df e8 9f 0d 74 00 41 bc 01 00 00 00 44 85 33 74 56 44
RSP: 0018:ffffc9000378f918 EFLAGS: 00000046
RAX: 1ffffffff20548c2 RBX: ffffffff902a4610 RCX: ffffffff816ab72a
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff90597178
RBP: 0000000000000002 R08: dffffc0000000000 R09: fffffbfff20b2e30
R10: fffffbfff20b2e30 R11: 1ffffffff20b2e2f R12: ffff88802b308a70
R13: dffffc0000000000 R14: 0000000000000004 R15: ffff88802b308a50
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd1fb17ff8 CR3: 0000000079d8d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
mark_held_locks kernel/locking/lockdep.c:4236 [inline]
__trace_hardirqs_on_caller kernel/locking/lockdep.c:4254 [inline]
lockdep_hardirqs_on_prepare+0x260/0x790 kernel/locking/lockdep.c:4321
trace_hardirqs_on+0x34/0x40 kernel/trace/trace_preemptirq.c:49
seqcount_lockdep_reader_access+0x13a/0x1f0 include/linux/seqlock.h:104
nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:335 [inline]
gc_worker+0x30a/0x1560 net/netfilter/nf_conntrack_core.c:1499
process_one_work+0x877/0xdb0 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306