INFO: task syz-executor.0:5108 blocked for more than 143 seconds.
Not tainted 5.15.158-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:28032 pid: 5108 ppid: 3529 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
schedule+0x11b/0x1f0 kernel/sched/core.c:6459
d_wait_lookup+0x1f0/0x2c0 fs/dcache.c:2563
d_alloc_parallel+0xa5e/0x1390 fs/dcache.c:2645
__lookup_slow+0x111/0x3d0 fs/namei.c:1648
lookup_slow+0x53/0x70 fs/namei.c:1680
walk_component+0x48c/0x610 fs/namei.c:1976
lookup_last fs/namei.c:2431 [inline]
path_lookupat+0x16f/0x450 fs/namei.c:2455
filename_lookup+0x230/0x5c0 fs/namei.c:2484
user_path_at_empty+0x40/0x180 fs/namei.c:2883
user_path_at include/linux/namei.h:57 [inline]
do_fchmodat fs/open.c:619 [inline]
__do_sys_fchmodat fs/open.c:634 [inline]
__se_sys_fchmodat fs/open.c:631 [inline]
__x64_sys_fchmodat+0xfd/0x1a0 fs/open.c:631
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fed2034bca9
RSP: 002b:00007fed1e89d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000010c
RAX: ffffffffffffffda RBX: 00007fed2047a050 RCX: 00007fed2034bca9
RDX: 0000000000000000 RSI: 0000000020000440 RDI: ffffffffffffff9c
RBP: 00007fed2039747e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fed2047a050 R15: 00007fff59e9ce08
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8c91fae0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by udevd/2963:
3 locks held by kworker/0:3/3248:
2 locks held by getty/3258:
#0: ffff88814b20f098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc90002bab2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158
2 locks held by syz-fuzzer/3503:
1 lock held by syz-executor.4/4309:
#0: ffff8880239e0308 (&xt[i].mutex){+.+.}-{3:3}, at: xt_find_target+0x6d/0x200 net/netfilter/x_tables.c:254
1 lock held by syz-executor.0/5096:
1 lock held by syz-executor.0/5108:
#0: ffff88805f044188 (&type->i_mutex_dir_key#19){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:799 [inline]
#0: ffff88805f044188 (&type->i_mutex_dir_key#19){.+.+}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1679
1 lock held by syz-executor.0/5266:
#0: ffff8880239e0308 (&xt[i].mutex){+.+.}-{3:3}, at: xt_find_table_lock+0x48/0x3a0 net/netfilter/x_tables.c:1242
2 locks held by syz-executor.1/5313:
1 lock held by syz-executor.1/5319:
#0: ffff888025acc188 (&type->i_mutex_dir_key#19){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:799 [inline]
#0: ffff888025acc188 (&type->i_mutex_dir_key#19){.+.+}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1679
1 lock held by syz-executor.2/5415:
2 locks held by kworker/u4:18/6254:
7 locks held by syz-executor.3/6594:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.158-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xe72/0xeb0 kernel/hung_task.c:295
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3248 Comm: kworker/0:3 Not tainted 5.15.158-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: events_power_efficient wg_ratelimiter_gc_entries
RIP: 0010:__lock_is_held kernel/locking/lockdep.c:5363 [inline]
RIP: 0010:lock_is_held_type+0x7d/0x180 kernel/locking/lockdep.c:5666
Code: 41 89 f6 49 89 ff 48 c7 04 24 00 00 00 00 9c 8f 04 24 4c 8b 24 24 fa 48 c7 c7 80 37 8b 8a e8 0a 12 00 00 65 ff 05 83 a8 e4 75 <41> 83 bd e8 0a 00 00 00 7e 47 4c 89 ed 48 81 c5 f0 0a 00 00 31 db
RSP: 0018:ffffc90002d67a98 EFLAGS: 00000002
RAX: 0000000000000000 RBX: 0000000000000a33 RCX: ffff8880135ad940
RDX: 0000000000000000 RSI: ffffffff8a8b3780 RDI: ffffffff8ad8f600
RBP: 00000000ffffffff R08: dffffc0000000000 R09: fffffbfff1a4aa95
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000246
R13: ffff8880135ad940 R14: 00000000ffffffff R15: ffffffff8c91fb40
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff04e1a05e3 CR3: 000000007eddb000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_is_held include/linux/lockdep.h:287 [inline]
___might_sleep+0xa2/0x6a0 kernel/sched/core.c:9592
wg_ratelimiter_gc_entries+0x3c9/0x470 drivers/net/wireguard/ratelimiter.c:78
process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300