INFO: task syz-executor.0:27875 blocked for more than 143 seconds.
Not tainted 6.1.0-rc4-syzkaller-00372-gaf7a05689189 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:22608 pid:27875 ppid:3646 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5191 [inline]
__schedule+0x8c9/0xd70 kernel/sched/core.c:6503
schedule+0xcb/0x190 kernel/sched/core.c:6579
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_do_setattr+0x10e3/0x1e90 fs/fuse/dir.c:1767
fuse_setattr+0x4e4/0xae0 fs/fuse/dir.c:1880
notify_change+0xe38/0x10f0 fs/attr.c:420
vfs_utimes+0x456/0x710 fs/utimes.c:65
do_utimes_path fs/utimes.c:98 [inline]
do_utimes fs/utimes.c:144 [inline]
__do_sys_utime fs/utimes.c:225 [inline]
__se_sys_utime+0x1bb/0x2c0 fs/utimes.c:214
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: 0033:0x7f5e69c8b639
RSP: 002b:00007f5e6aa0a168 EFLAGS: 00000246 ORIG_RAX: 0000000000000084
RAX: ffffffffffffffda RBX: 00007f5e69dabf80 RCX: 00007f5e69c8b639
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100
RBP: 00007f5e69ce6ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffddb7369df R14: 00007f5e6aa0a300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8cb226f0 (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: ffffffff8cb22ef0 (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: ffffffff8cb22520 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3285:
#0: ffff88814ac74098 (&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.4/3649:
#0: ffffffff8cb27af8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
#0: ffffffff8cb27af8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x384/0x860 kernel/rcu/tree_exp.h:946
2 locks held by kworker/1:6/3696:
#0: ffff888012066538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc9000569fd00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
2 locks held by syz-executor.0/27875:
#0: ffff888022380460 (sb_writers#23){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:393
#1: ffff8880716cc4d0 (&sb->s_type->i_mutex_key#34){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff8880716cc4d0 (&sb->s_type->i_mutex_key#34){+.+.}-{3:3}, at: vfs_utimes+0x3ef/0x710 fs/utimes.c:64
2 locks held by syz-executor.1/718:
#0: ffff8880a04380e0 (&type->s_umount_key#84/1){+.+.}-{3:3}, at: alloc_super+0x212/0x920 fs/super.c:228
#1: ffffffff8cb27af8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline]
#1: ffffffff8cb27af8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x455/0x860 kernel/rcu/tree_exp.h:946
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.1.0-rc4-syzkaller-00372-gaf7a05689189 #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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 146 Comm: kworker/1:2 Not tainted 6.1.0-rc4-syzkaller-00372-gaf7a05689189 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Workqueue: rcu_gp process_srcu
RIP: 0010:preempt_latency_start kernel/sched/core.c:5632 [inline]
RIP: 0010:preempt_count_add+0x7c/0x180 kernel/sched/core.c:5658
Code: db 00 00 00 83 3d b3 85 08 10 00 75 11 65 8b 05 b2 f5 a6 7e 0f b6 c0 3d f5 00 00 00 73 5a 65 8b 05 a1 f5 a6 7e 25 ff ff ff 7f <39> d8 75 44 4c 8b 74 24 18 4c 89 f7 e8 23 96 0d 00 85 c0 74 0a 45
RSP: 0018:ffffc9000251faa0 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff9163ff03
RDX: 0000000000000228 RSI: ffffffff8aecf940 RDI: 0000000000000001
RBP: 0000000000000c52 R08: ffffffff8437ca94 R09: fffffbfff1c1b6be
R10: fffffbfff1c1b6be R11: 1ffffffff1c1b6bd R12: dffffc0000000000
R13: ffffffff9170ddc8 R14: 0000000000002af9 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fde6a1ff718 CR3: 00000000317d4000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
delay_tsc+0x71/0xe0 arch/x86/lib/delay.c:79
try_check_zero+0x436/0x450 kernel/rcu/srcutree.c:974
srcu_advance_state kernel/rcu/srcutree.c:1521 [inline]
process_srcu+0x1b9/0x1140 kernel/rcu/srcutree.c:1622
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