INFO: task syz-executor.1:28099 blocked for more than 143 seconds.
Not tainted 6.2.0-rc5-syzkaller-00027-gfb6e71db53f3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:23296 pid:28099 ppid:6554 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6606
schedule+0xcb/0x190 kernel/sched/core.c:6682
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:1299 [inline]
fuse_permission+0x893/0xe10 fs/fuse/dir.c:1378
do_inode_permission fs/namei.c:458 [inline]
inode_permission+0x22c/0x450 fs/namei.c:525
path_permission include/linux/fs.h:2918 [inline]
__do_sys_chdir fs/open.c:518 [inline]
__se_sys_chdir+0x131/0x210 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: 0033:0x7f1a2c48c0c9
RSP: 002b:00007f1a2d137168 EFLAGS: 00000246 ORIG_RAX: 0000000000000050
RAX: ffffffffffffffda RBX: 00007f1a2c5abf80 RCX: 00007f1a2c48c0c9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020004340
RBP: 00007f1a2c4e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff0ad5a67f R14: 00007f1a2d137300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d327010 (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: ffffffff8d327810 (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: ffffffff8d326e40 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by syslogd/4414:
#0: ffff8880b993a1d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:537
1 lock held by klogd/4421:
#0: ffff8880b993a1d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:537
2 locks held by getty/4749:
#0: ffff88802862a098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1650 drivers/tty/n_tty.c:2177
3 locks held by kworker/u4:5/27911:
#0: ffff8880b993a1d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:537
#1: ffff8880b9927748 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x57b/0x9a0 kernel/sched/psi.c:964
#2: ffff8880b9928558 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x12a/0x270 kernel/time/timer.c:999
5 locks held by kworker/u4:9/27912:
#0: ffff8880b993a1d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:537
#1: ffff8880b9927748 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x611/0x9a0 kernel/sched/psi.c:976
#2: ffff8880b9928558 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x12a/0x270 kernel/time/timer.c:999
#3: ffffffff922eda70 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_activate+0x96/0x6e0 lib/debugobjects.c:665
#4: ffff8880b993dc70 (&c->lock){..-.}-{2:2}, at: local_lock_acquire+0x0/0x70
2 locks held by syz-executor.1/28504:
#0: ffff888075b55910 (&type->i_mutex_dir_key#25){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#0: ffff888075b55910 (&type->i_mutex_dir_key#25){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1701
#1: ffff888075b55d78 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xc0/0x110 fs/fuse/inode.c:468
2 locks held by syz-executor.1/28505:
#0: ffff888074cf6460 (sb_writers#38){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:508
#1: ffff888075b55910 (&type->i_mutex_dir_key#25/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:791 [inline]
#1: ffff888075b55910 (&type->i_mutex_dir_key#25/1){+.+.}-{3:3}, at: do_rmdir+0x257/0x5f0 fs/namei.c:4169
2 locks held by syz-executor.1/28506:
#0: ffff888075b55910 (&type->i_mutex_dir_key#25){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#0: ffff888075b55910 (&type->i_mutex_dir_key#25){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1701
#1: ffff888075b55d78 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xc0/0x110 fs/fuse/inode.c:468
2 locks held by syz-executor.1/29054:
#0: ffff888075b56d50 (&type->i_mutex_dir_key#25){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#0: ffff888075b56d50 (&type->i_mutex_dir_key#25){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1701
#1: ffff888075b571b8 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xc0/0x110 fs/fuse/inode.c:468
2 locks held by syz-executor.1/29065:
#0: ffff888075b56d50 (&type->i_mutex_dir_key#25){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#0: ffff888075b56d50 (&type->i_mutex_dir_key#25){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1701
#1: ffff888075b571b8 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xc0/0x110 fs/fuse/inode.c:468
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc5-syzkaller-00027-gfb6e71db53f3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x290 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+0xcd5/0xd20 kernel/hung_task.c:377
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 27911 Comm: kworker/u4:5 Not tainted 6.2.0-rc5-syzkaller-00027-gfb6e71db53f3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:separate_irq_context kernel/locking/lockdep.c:4584 [inline]
RIP: 0010:__lock_acquire+0xdc6/0x1f60 kernel/locking/lockdep.c:5039
Code: 04 9b 48 8b 0c 24 48 8d 9c c1 30 0a 00 00 48 89 d8 48 c1 e8 03 8a 04 38 84 c0 0f 85 93 0c 00 00 8b 1b 48 8b 44 24 18 8a 04 38 <84> c0 0f 85 a8 0c 00 00 41 33 1f f7 c3 00 60 00 00 74 0c bd 01 00
RSP: 0018:ffffc9000bf6f9a8 EFLAGS: 00000046
RAX: 1ffff11008848400 RBX: 00000000000406c5 RCX: ffff888044241d40
RDX: 0000000000000000 RSI: 0000000000000008 RDI: dffffc0000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff20fca31
R10: fffffbfff20fca31 R11: 1ffffffff20fca30 R12: 1ffff110088484ed
R13: 2ce4822c53ec0be5 R14: ffff888044242768 R15: ffff8880442427e8
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c01586b5d8 CR3: 000000000d08e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x182/0x3c0 kernel/locking/lockdep.c:5668
rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:325
rcu_read_lock include/linux/rcupdate.h:764 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0xc8/0x5b0 net/batman-adv/network-coding.c:719
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:308