INFO: task syz-executor.1:5098 blocked for more than 143 seconds.
Not tainted 6.8.0-rc5-syzkaller-00163-gffd2cb6b718e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:18384 pid:5098 tgid:5098 ppid:1 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x177f/0x49a0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
fuse_lock_inode+0xd3/0x120 fs/fuse/inode.c:544
fuse_lookup+0x115/0x600 fs/fuse/dir.c:424
__lookup_slow+0x28c/0x3f0 fs/namei.c:1693
lookup_slow+0x53/0x70 fs/namei.c:1710
walk_component fs/namei.c:2001 [inline]
link_path_walk+0x9cd/0xe80 fs/namei.c:2328
path_openat+0x249/0x3240 fs/namei.c:3794
do_filp_open+0x234/0x490 fs/namei.c:3825
do_sys_openat2+0x13e/0x1d0 fs/open.c:1404
do_sys_open fs/open.c:1419 [inline]
__do_sys_openat fs/open.c:1435 [inline]
__se_sys_openat fs/open.c:1430 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1430
do_syscall_64+0xf9/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f03afe7d801
RSP: 002b:00007fffee5bd9c0 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000000000000093e RCX: 00007f03afe7d801
RDX: 0000000000090800 RSI: 00007f03afec945d RDI: 00000000ffffff9c
RBP: 00007fffee5bda8c R08: 0000000000000000 R09: 00007fffee5e00b0
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000
R13: 00000000000f1d09 R14: 00000000000f1a7c R15: 0000000000000009
INFO: task syz-executor.1:24791 blocked for more than 143 seconds.
Not tainted 6.8.0-rc5-syzkaller-00163-gffd2cb6b718e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:25752 pid:24791 tgid:24779 ppid:5098 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x177f/0x49a0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
request_wait_answer fs/fuse/dev.c:407 [inline]
__fuse_request_send fs/fuse/dev.c:426 [inline]
fuse_simple_request+0x1198/0x1b90 fs/fuse/dev.c:513
fuse_lookup_name+0x332/0x830 fs/fuse/dir.c:386
fuse_lookup+0x182/0x600 fs/fuse/dir.c:425
__lookup_slow+0x28c/0x3f0 fs/namei.c:1693
lookup_slow+0x53/0x70 fs/namei.c:1710
walk_component fs/namei.c:2001 [inline]
link_path_walk+0x9cd/0xe80 fs/namei.c:2328
path_openat+0x249/0x3240 fs/namei.c:3794
do_filp_open+0x234/0x490 fs/namei.c:3825
do_sys_openat2+0x13e/0x1d0 fs/open.c:1404
do_sys_open fs/open.c:1419 [inline]
__do_sys_openat fs/open.c:1435 [inline]
__se_sys_openat fs/open.c:1430 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1430
do_syscall_64+0xf9/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f03afe7dda9
RSP: 002b:00007f03b0bf60c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f03affac120 RCX: 00007f03afe7dda9
RDX: 0000000000000002 RSI: 0000000020002080 RDI: ffffffffffffff9c
RBP: 00007f03afeca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f03affac120 R15: 00007fffee5bd718
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8e130c60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8e130c60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8e130c60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by kworker/u4:2/37:
2 locks held by getty/4812:
#0: ffff88802fb290a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002efe2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
2 locks held by syz-executor.1/5098:
#0: ffff88803e8c0810 (&type->i_mutex_dir_key#14){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:814 [inline]
#0: ffff88803e8c0810 (&type->i_mutex_dir_key#14){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1709
#1: ffff88803e8c0c88 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd3/0x120 fs/fuse/inode.c:544
2 locks held by syz-executor.1/24791:
#0: ffff88803e8c0810 (&type->i_mutex_dir_key#14){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:814 [inline]
#0: ffff88803e8c0810 (&type->i_mutex_dir_key#14){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1709
#1: ffff88803e8c0c88 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd3/0x120 fs/fuse/inode.c:544
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc5-syzkaller-00163-gffd2cb6b718e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xfaf/0xff0 kernel/hung_task.c:379
kthread+0x2ef/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 37 Comm: kworker/u4:2 Not tainted 6.8.0-rc5-syzkaller-00163-gffd2cb6b718e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:__this_cpu_preempt_check+0x0/0x20 lib/smp_processor_id.c:65
Code: fc ff e8 13 7e ff ff eb a8 e8 6c e0 ff ff 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 89 fe 48 c7 c7 20 9a fd 8b e9 bd fe ff ff 66 2e 0f
RSP: 0018:ffffc90000adfa18 EFLAGS: 00000092
RAX: 0000000000000001 RBX: ffffc90000adfa80 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffff88801b6f28d0 RDI: ffffffff8baac7e0
RBP: ffffc90000adfb80 R08: ffffffff92c55427 R09: 1ffffffff258aa84
R10: dffffc0000000000 R11: fffffbfff258aa85 R12: 1ffff9200015bf4c
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000246
FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005649a333f680 CR3: 000000000df32000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lockdep_recursion_finish kernel/locking/lockdep.c:467 [inline]
lock_acquire+0x1f3/0x530 kernel/locking/lockdep.c:5756
rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
rcu_read_lock include/linux/rcupdate.h:750 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0xec/0x610 net/batman-adv/network-coding.c:719
process_one_work kernel/workqueue.c:2633 [inline]
process_scheduled_works+0x913/0x1420 kernel/workqueue.c:2706
worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
kthread+0x2ef/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242