INFO: task syz-executor.0:5082 blocked for more than 143 seconds.
Not tainted 6.2.0-syzkaller-02299-g4a7d37e824f5 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:22888 pid:5082 ppid:1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0xc5f/0x5b30 kernel/sched/core.c:6622
schedule+0xde/0x1a0 kernel/sched/core.c:6698
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6757
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa3b/0x1350 kernel/locking/mutex.c:747
fuse_lock_inode+0xd2/0x110 fs/fuse/inode.c:475
fuse_lookup.part.0+0x86/0x390 fs/fuse/dir.c:432
fuse_lookup+0x74/0x90 fs/fuse/dir.c:429
__lookup_slow+0x24c/0x460 fs/namei.c:1686
lookup_slow fs/namei.c:1703 [inline]
walk_component+0x33f/0x5a0 fs/namei.c:1994
link_path_walk.part.0+0x74e/0xd60 fs/namei.c:2321
link_path_walk fs/namei.c:2246 [inline]
path_openat+0x25c/0x2750 fs/namei.c:3711
do_filp_open+0x1ba/0x410 fs/namei.c:3742
do_sys_openat2+0x16d/0x4c0 fs/open.c:1312
do_sys_open fs/open.c:1328 [inline]
__do_sys_openat fs/open.c:1344 [inline]
__se_sys_openat fs/open.c:1339 [inline]
__x64_sys_openat+0x143/0x1f0 fs/open.c:1339
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f583e48bc68
RSP: 002b:00007fff98d1eb90 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f583e48bc68
RDX: 0000000000090800 RSI: 00007f583e4e6bc8 RDI: 00000000ffffff9c
RBP: 00007fff98d1ec5c R08: 0000000000090800 R09: 00007f583e4e6bc8
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000
R13: 000000000000a53f R14: 0000000000000008 R15: 00007fff98d1ecc0
INFO: task syz-executor.0:5100 blocked for more than 143 seconds.
Not tainted 6.2.0-syzkaller-02299-g4a7d37e824f5 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:26656 pid:5100 ppid:5082 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0xc5f/0x5b30 kernel/sched/core.c:6622
schedule+0xde/0x1a0 kernel/sched/core.c:6698
request_wait_answer+0x46d/0x850 fs/fuse/dev.c:407
__fuse_request_send fs/fuse/dev.c:426 [inline]
fuse_simple_request+0x711/0xec0 fs/fuse/dev.c:511
fuse_lookup_name+0x284/0x630 fs/fuse/dir.c:392
fuse_lookup.part.0+0xdf/0x390 fs/fuse/dir.c:433
fuse_lookup+0x74/0x90 fs/fuse/dir.c:429
__lookup_slow+0x24c/0x460 fs/namei.c:1686
lookup_slow fs/namei.c:1703 [inline]
walk_component+0x33f/0x5a0 fs/namei.c:1994
link_path_walk.part.0+0x74e/0xd60 fs/namei.c:2321
link_path_walk fs/namei.c:2246 [inline]
path_openat+0x25c/0x2750 fs/namei.c:3711
do_filp_open+0x1ba/0x410 fs/namei.c:3742
do_sys_openat2+0x16d/0x4c0 fs/open.c:1312
do_sys_open fs/open.c:1328 [inline]
__do_sys_openat fs/open.c:1344 [inline]
__se_sys_openat fs/open.c:1339 [inline]
__x64_sys_openat+0x143/0x1f0 fs/open.c:1339
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f583e43e284
RSP: 002b:00007f583f127ec0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f583e43e284
RDX: 0000000000000002 RSI: 00007f583f127fe0 RDI: 00000000ffffff9c
RBP: 00007f583f127fe0 R08: 0000000000000000 R09: 00000000000010f7
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002
R13: 00007f583f127fdc R14: 00007f583f127fe0 R15: 0000000020001142
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8c794ef0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xcd0 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8c794bf0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xcd0 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/28:
#0: ffffffff8c795a40 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x57/0x276 kernel/locking/lockdep.c:6495
2 locks held by getty/4754:
#0: ffff88802bf03098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
2 locks held by syz-executor.0/5082:
#0: ffff888073308150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#0: ffff888073308150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lookup_slow fs/namei.c:1702 [inline]
#0: ffff888073308150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: walk_component+0x332/0x5a0 fs/namei.c:1994
#1: ffff8880733085b8 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd2/0x110 fs/fuse/inode.c:475
2 locks held by syz-executor.0/5100:
#0: ffff888073308150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#0: ffff888073308150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lookup_slow fs/namei.c:1702 [inline]
#0: ffff888073308150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: walk_component+0x332/0x5a0 fs/namei.c:1994
#1: ffff8880733085b8 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd2/0x110 fs/fuse/inode.c:475
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.2.0-syzkaller-02299-g4a7d37e824f5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
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+0xcae/0x1050 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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 41 Comm: kworker/u4:2 Not tainted 6.2.0-syzkaller-02299-g4a7d37e824f5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:413 [inline]
RIP: 0010:smp_call_function_many_cond+0x444/0x10a0 kernel/smp.c:987
Code: 00 45 85 e4 74 48 48 8b 04 24 49 89 c5 83 e0 07 49 c1 ed 03 49 89 c4 4d 01 fd 41 83 c4 03 e8 93 24 0b 00 f3 90 41 0f b6 45 00 <41> 38 c4 7c 08 84 c0 0f 85 4e 0a 00 00 8b 43 08 31 ff 83 e0 01 41
RSP: 0018:ffffc90000b27950 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff8880b9941ea0 RCX: 0000000000000000
RDX: ffff888017cc0000 RSI: ffffffff8176b7ed RDI: 0000000000000005
RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000003
R13: ffffed10173283d5 R14: 0000000000000001 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f73eb5b9680 CR3: 000000000c572000 CR4: 0000000000350ef0
Call Trace:
on_each_cpu_cond_mask+0x5a/0xa0 kernel/smp.c:1155
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:1770 [inline]
text_poke_bp_batch+0x634/0x770 arch/x86/kernel/alternative.c:2053
text_poke_flush arch/x86/kernel/alternative.c:2161 [inline]
text_poke_flush arch/x86/kernel/alternative.c:2158 [inline]
text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:2168
arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:146
jump_label_update+0x32f/0x410 kernel/jump_label.c:829
static_key_enable_cpuslocked+0x1b5/0x270 kernel/jump_label.c:205
static_key_enable+0x1a/0x20 kernel/jump_label.c:218
toggle_allocation_gate mm/kfence/core.c:799 [inline]
toggle_allocation_gate+0xf8/0x230 mm/kfence/core.c:791
process_one_work+0x9bf/0x1750 kernel/workqueue.c:2390
worker_thread+0x669/0x1090 kernel/workqueue.c:2537
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308