INFO: task syz-executor.1:14973 blocked for more than 143 seconds.
Not tainted 6.7.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:25040 pid:14973 tgid:14965 ppid:6948 flags:0x00024006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
rwsem_down_write_slowpath+0xeea/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
__super_lock fs/super.c:56 [inline]
super_lock+0x129/0x3a0 fs/super.c:117
user_get_super+0xd5/0x180 fs/super.c:1062
quotactl_block fs/quota/quota.c:890 [inline]
__do_sys_quotactl fs/quota/quota.c:955 [inline]
__se_sys_quotactl+0x523/0xa30 fs/quota/quota.c:917
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7faa5707cd29
RSP: 002b:00007faa57e690c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007faa571abf80 RCX: 00007faa5707cd29
RDX: ffffffffffffffff RSI: 0000000020000040 RDI: ffffffff80000200
RBP: 00007faa570c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007faa571abf80 R15: 00007ffc504dc008
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8d92dae0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
#0: ffffffff8d92dae0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]
#0: ffffffff8d92dae0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by kworker/u4:8/2798:
#0: ffff888012c71938 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2602 [inline]
#0: ffff888012c71938 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2700
#1: ffffc9000a297d20 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2602 [inline]
#1: ffffc9000a297d20 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2700
2 locks held by klogd/4498:
2 locks held by getty/4808:
#0: ffff88802697f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
3 locks held by syz-executor.1/6831:
1 lock held by syz-executor.1/14973:
#0: ffff88807ea7c0e0 (&type->s_umount_key#25){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88807ea7c0e0 (&type->s_umount_key#25){+.+.}-{3:3}, at: super_lock+0x129/0x3a0 fs/super.c:117
1 lock held by syz-executor.1/15087:
#0: ffff88807ea7c0e0 (&type->s_umount_key#25){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88807ea7c0e0 (&type->s_umount_key#25){+.+.}-{3:3}, at: super_lock+0x129/0x3a0 fs/super.c:117
1 lock held by syz-executor.1/15088:
#0: ffff88807ea7c0e0 (&type->s_umount_key#25){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88807ea7c0e0 (&type->s_umount_key#25){+.+.}-{3:3}, at: super_lock+0x129/0x3a0 fs/super.c:117
1 lock held by syz-executor.1/15171:
#0: ffff88807ea7c0e0 (&type->s_umount_key#25){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88807ea7c0e0 (&type->s_umount_key#25){+.+.}-{3:3}, at: super_lock+0x129/0x3a0 fs/super.c:117
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.7.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x310 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+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 745 Comm: kworker/u4:5 Not tainted 6.7.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:mark_lock+0x0/0x350 kernel/locking/lockdep.c:4639
Code: 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 1a ff ff ff 4c 89 ff e8 a1 eb 7c 00 e9 0d ff ff ff e8 27 55 aa 09 0f 1f 80 00 00 00 00 <55> 41 57 41 56 41 55 41 54 53 48 83 ec 10 49 89 f7 48 89 3c 24 49
RSP: 0018:ffffc900035df888 EFLAGS: 00000046
RAX: 00000000000406cb RBX: ffffffff90b06680 RCX: 00000000000406cb
RDX: 0000000000000002 RSI: ffff88801c568b10 RDI: ffff88801c568000
RBP: ffff88801c568b10 R08: ffffffff90dd843f R09: 1ffffffff21bb087
R10: dffffc0000000000 R11: fffffbfff21bb088 R12: 0000000000000001
R13: ffff88801c568000 R14: 1ffff110038ad166 R15: ffff88801c568b30
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c018686ca0 CR3: 0000000027f63000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
mark_usage kernel/locking/lockdep.c:4587 [inline]
__lock_acquire+0x112c/0x1fd0 kernel/locking/lockdep.c:5091
lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
_raw_spin_lock_bh+0x35/0x50 kernel/locking/spinlock.c:178
spin_lock_bh include/linux/spinlock.h:356 [inline]
batadv_nc_purge_paths+0xe8/0x3a0 net/batman-adv/network-coding.c:442
batadv_nc_worker+0x328/0x610 net/batman-adv/network-coding.c:720
process_one_work kernel/workqueue.c:2627 [inline]
process_scheduled_works+0x90f/0x1420 kernel/workqueue.c:2700
worker_thread+0xa5f/0x1000 kernel/workqueue.c:2781
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242