INFO: task syz-executor.0:6586 blocked for more than 143 seconds.
Not tainted 6.9.0-rc5-next-20240426-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:18808 pid:6586 tgid:6586 ppid:1 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6837
bit_wait+0x12/0xd0 kernel/sched/wait_bit.c:199
__wait_on_bit+0xb0/0x2f0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x1d5/0x260 kernel/sched/wait_bit.c:64
wait_on_bit include/linux/wait_bit.h:76 [inline]
gfs2_glock_wait+0xc7/0x2b0 fs/gfs2/glock.c:1394
gfs2_glock_nq_init fs/gfs2/glock.h:238 [inline]
__gfs2_lookup+0x11b/0x280 fs/gfs2/inode.c:905
__lookup_slow+0x28c/0x3f0 fs/namei.c:1692
lookup_slow+0x53/0x70 fs/namei.c:1709
walk_component+0x2e1/0x410 fs/namei.c:2004
lookup_last fs/namei.c:2469 [inline]
path_lookupat+0x16f/0x450 fs/namei.c:2493
filename_lookup+0x256/0x610 fs/namei.c:2522
user_path_at_empty+0x42/0x60 fs/namei.c:2929
user_path_at include/linux/namei.h:58 [inline]
ksys_umount fs/namespace.c:1916 [inline]
__do_sys_umount fs/namespace.c:1924 [inline]
__se_sys_umount fs/namespace.c:1922 [inline]
__x64_sys_umount+0xf4/0x170 fs/namespace.c:1922
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f12ca27f1d7
RSP: 002b:00007fffce3fd0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 00007f12ca2c93b9 RCX: 00007f12ca27f1d7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffce3fd1a0
RBP: 00007fffce3fd1a0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fffce3fe290
R13: 00007f12ca2c93b9 R14: 000055558a731430 R15: 000000000000001e
Showing all locks held in the system:
3 locks held by kworker/u8:1/12:
#0: ffff8880b943e7d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
#1: ffff8880b9428948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988
#2: ffff888062460768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_lock include/net/cfg80211.h:5963 [inline]
#2: ffff888062460768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: cfg80211_wiphy_work+0x35/0x260 net/wireless/core.c:424
1 lock held by khungtaskd/30:
#0: ffffffff8e333ba0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8e333ba0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff8e333ba0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by getty/4853:
#0: ffff88802fc510a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f0e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
1 lock held by syz-executor.0/6586:
#0: ffff8880781c4b38 (&type->i_mutex_dir_key#20){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:801 [inline]
#0: ffff8880781c4b38 (&type->i_mutex_dir_key#20){.+.+}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1708
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 30 Comm: khungtaskd Not tainted 6.9.0-rc5-next-20240426-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+0x241/0x360 lib/dump_stack.c:114
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:223 [inline]
watchdog+0xfde/0x1020 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 35 Comm: kworker/u8:2 Not tainted 6.9.0-rc5-next-20240426-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:__lock_release kernel/locking/lockdep.c:5458 [inline]
RIP: 0010:lock_release+0x30a/0x9f0 kernel/locking/lockdep.c:5774
Code: 24 41 81 fd ff ff 1f 00 0f 87 ab 02 00 00 49 bc 00 00 00 00 00 fc ff df 48 8b 44 24 48 42 0f b6 04 20 84 c0 0f 85 e5 04 00 00 <89> 16 4c 89 f8 48 c1 e8 03 42 80 3c 20 00 48 8b 5c 24 18 74 0e 4c
RSP: 0018:ffffc90000ab79a0 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 1ffff110030d052a RCX: ffffc90000ab7a03
RDX: 0000000000000002 RSI: ffff8880186828d8 RDI: ffff888018682930
RBP: ffffc90000ab7ad8 R08: ffffffff8fac7fef R09: 1ffffffff1f58ffd
R10: dffffc0000000000 R11: fffffbfff1f58ffe R12: dffffc0000000000
R13: 0000000000020021 R14: dffffc0000000000 R15: ffff888018682930
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056043987a8d8 CR3: 000000000e132000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_lock_release include/linux/rcupdate.h:339 [inline]
rcu_read_unlock include/linux/rcupdate.h:872 [inline]
batadv_nc_process_nc_paths+0x2f0/0x3a0 net/batman-adv/network-coding.c:699
batadv_nc_worker+0x52c/0x610 net/batman-adv/network-coding.c:735
process_one_work kernel/workqueue.c:3222 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3303
worker_thread+0x86d/0xd70 kernel/workqueue.c:3384
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244