INFO: task syz-executor.0:3923 blocked for more than 143 seconds.
Not tainted 6.1.0-rc4-syzkaller-00356-g8f2975c2bb4c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:22072 pid:3923 ppid:3654 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_lookup_name+0x349/0x830 fs/fuse/dir.c:392
fuse_lookup+0x13e/0x5d0 fs/fuse/dir.c:433
fuse_atomic_open+0x196/0x860 fs/fuse/dir.c:662
atomic_open fs/namei.c:3276 [inline]
lookup_open fs/namei.c:3384 [inline]
open_last_lookups fs/namei.c:3481 [inline]
path_openat+0xf39/0x2df0 fs/namei.c:3710
do_filp_open+0x264/0x4f0 fs/namei.c:3740
do_sys_openat2+0x124/0x4e0 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_open fs/open.c:1334 [inline]
__se_sys_open fs/open.c:1330 [inline]
__x64_sys_open+0x221/0x270 fs/open.c:1330
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: 0033:0x7f37bdc8b639
RSP: 002b:00007f37bea45168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f37bddac050 RCX: 00007f37bdc8b639
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000000
RBP: 00007f37bdce6a41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe10c1704f R14: 00007f37bea45300 R15: 0000000000022000
INFO: task syz-executor.0:3924 blocked for more than 144 seconds.
Not tainted 6.1.0-rc4-syzkaller-00356-g8f2975c2bb4c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:23912 pid:3924 ppid:3654 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
d_wait_lookup+0x1ca/0x2b0 fs/dcache.c:2625
d_alloc_parallel+0x9a3/0x1240 fs/dcache.c:2707
__lookup_slow+0xfd/0x3a0 fs/namei.c:1670
lookup_slow+0x53/0x70 fs/namei.c:1702
walk_component+0x2e1/0x410 fs/namei.c:1993
lookup_last fs/namei.c:2450 [inline]
path_lookupat+0x17d/0x450 fs/namei.c:2474
filename_lookup+0x274/0x650 fs/namei.c:2503
user_path_at_empty+0x40/0x1a0 fs/namei.c:2876
user_path_at include/linux/namei.h:57 [inline]
do_mount fs/namespace.c:3380 [inline]
__do_sys_mount fs/namespace.c:3591 [inline]
__se_sys_mount+0x296/0x3c0 fs/namespace.c:3568
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: 0033:0x7f37bdc8b639
RSP: 002b:00007f37bea24168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f37bddac120 RCX: 00007f37bdc8b639
RDX: 0000000020002100 RSI: 00000000200020c0 RDI: 0000000000000000
RBP: 00007f37bdce6a41 R08: 0000000020000180 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe10c1704f R14: 00007f37bea24300 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/3283:
#0: ffff888027ffa098 (&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-fuzzer/3644:
4 locks held by syz-executor.1/3640:
2 locks held by kworker/1:7/3690:
#0: ffff888012066538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc90004acfd00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
2 locks held by syz-executor.0/3923:
#0: ffff88803154e690 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#0: ffff88803154e690 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3480 [inline]
#0: ffff88803154e690 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x7aa/0x2df0 fs/namei.c:3710
#1: ffff88803154eaf8 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xc0/0x110 fs/fuse/inode.c:468
1 lock held by syz-executor.0/3924:
#0: ffff88803154e690 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#0: ffff88803154e690 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1701
1 lock held by syz-executor.0/4029:
#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
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.1.0-rc4-syzkaller-00356-g8f2975c2bb4c #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: 16383 Comm: kworker/u4:11 Not tainted 6.1.0-rc4-syzkaller-00356-g8f2975c2bb4c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Workqueue: bat_events batadv_nc_worker
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x60 kernel/kcov.c:206
Code: 00 00 00 00 66 90 53 48 89 fb e8 17 00 00 00 48 8b 3d 08 d8 85 0c 48 89 de 5b e9 37 29 53 00 cc cc cc cc cc cc cc 48 8b 04 24 <65> 48 8b 0c 25 40 6f 02 00 65 8b 15 14 8f 7a 7e f7 c2 00 01 ff 00
RSP: 0018:ffffc900061ffc08 EFLAGS: 00000202
RAX: ffffffff8157e450 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff88801cfd8000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000002 R08: ffffffff8157e447 R09: fffffbfff1c1b6be
R10: fffffbfff1c1b6be R11: 1ffffffff1c1b6bd R12: dffffc0000000000
R13: ffff88814a9e6808 R14: ffffffff8a05c1d0 R15: ffff88807b0656d8
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1cb784e718 CR3: 000000008054c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
trace_workqueue_execute_end+0xc0/0x2c0 include/trace/events/workqueue.h:108
process_one_work+0x896/0xdb0 kernel/workqueue.c:2294
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