INFO: task syz-executor.2:20039 blocked for more than 143 seconds.
Not tainted 5.15.126-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:23840 pid:20039 ppid: 3540 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12c4/0x4590 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
schedule_timeout+0xac/0x300 kernel/time/timer.c:1860
do_wait_for_common+0x2d9/0x480 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x48/0x60 kernel/sched/completion.c:138
xfs_buf_iowait+0xb4/0x400 fs/xfs/xfs_buf.c:1573
xfs_buf_delwri_pushbuf+0x2cf/0x4b0 fs/xfs/xfs_buf.c:2251
xfs_qm_flush_one+0x266/0x350 fs/xfs/xfs_qm.c:1249
xfs_qm_dquot_walk+0x22a/0x4a0 fs/xfs/xfs_qm.c:86
xfs_qm_quotacheck+0x3c3/0x640 fs/xfs/xfs_qm.c:1345
xfs_qm_mount_quotas+0x328/0x610 fs/xfs/xfs_qm.c:1441
xfs_mountfs+0x162b/0x1ca0 fs/xfs/xfs_mount.c:904
xfs_fs_fill_super+0xfd4/0x1210 fs/xfs/xfs_super.c:1658
get_tree_bdev+0x3fe/0x620 fs/super.c:1312
vfs_get_tree+0x88/0x270 fs/super.c:1517
do_new_mount+0x28b/0xae0 fs/namespace.c:2994
do_mount fs/namespace.c:3337 [inline]
__do_sys_mount fs/namespace.c:3545 [inline]
__se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3522
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+0x61/0xcb
RIP: 0033:0x7fb1351191ea
RSP: 002b:00007fb133698ee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fb133698f80 RCX: 00007fb1351191ea
RDX: 0000000020009600 RSI: 0000000020009640 RDI: 00007fb133698f40
RBP: 0000000020009600 R08: 00007fb133698f80 R09: 0000000000200800
R10: 0000000000200800 R11: 0000000000000202 R12: 0000000020009640
R13: 00007fb133698f40 R14: 00000000000095d1 R15: 0000000020000040
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8c91f0a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3246:
#0: ffff888024786098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc90002bb32e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158
3 locks held by syz-executor.2/20039:
#0: ffff88808b78c0e0 (&type->s_umount_key#55/1){+.+.}-{3:3}, at: alloc_super+0x210/0x940 fs/super.c:229
#1: ffff88807cb19158 (&qinf->qi_tree_lock){+.+.}-{3:3}, at: xfs_qm_dquot_walk+0x132/0x4a0 fs/xfs/xfs_qm.c:73
#2: ffff88809a081928 (&xfs_dquot_project_class){+.+.}-{3:3}, at: xfs_dqlock fs/xfs/xfs_dquot.h:133 [inline]
#2: ffff88809a081928 (&xfs_dquot_project_class){+.+.}-{3:3}, at: xfs_qm_flush_one+0xca/0x350 fs/xfs/xfs_qm.c:1225
1 lock held by syz-executor.5/20134:
#0: ffff88808b78c0e0 (&type->s_umount_key#57){++++}-{3:3}, at: iterate_supers+0xac/0x1e0 fs/super.c:703
1 lock held by syz-executor.5/20251:
#0: ffff88808b78c0e0 (&type->s_umount_key#57){++++}-{3:3}, at: iterate_supers+0xac/0x1e0 fs/super.c:703
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.126-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xe72/0xeb0 kernel/hung_task.c:295
kthread+0x3f6/0x4f0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 955 Comm: kworker/u4:3 Not tainted 5.15.126-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Workqueue: bat_events batadv_purge_orig
RIP: 0010:hlock_class kernel/locking/lockdep.c:192 [inline]
RIP: 0010:mark_lock+0x61/0x340 kernel/locking/lockdep.c:4568
Code: 85 81 02 00 00 31 ed f6 43 02 03 40 0f 94 c5 83 f5 09 eb 0b 89 d5 83 fa 20 0f 83 d0 02 00 00 41 be 01 00 00 00 89 e9 41 d3 e6 <49> 8d 5f 20 48 89 d8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 27 02
RSP: 0018:ffffc90004c9f838 EFLAGS: 00000002
RAX: 000000000004077e RBX: 1ffff1100372e16c RCX: 0000000000000002
RDX: 0000000000000002 RSI: ffff88801b970b40 RDI: ffff88801b970000
RBP: 0000000000000002 R08: dffffc0000000000 R09: fffffbfff1f7ae3e
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000002
R13: dffffc0000000000 R14: 0000000000000004 R15: ffff88801b970b40
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562ea0c9a680 CR3: 0000000023a26000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
mark_usage kernel/locking/lockdep.c:4499 [inline]
__lock_acquire+0xc33/0x1ff0 kernel/locking/lockdep.c:4965
lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5622
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
_raw_spin_lock_bh+0x31/0x40 kernel/locking/spinlock.c:178
spin_lock_bh include/linux/spinlock.h:368 [inline]
batadv_purge_orig_ref+0x1b4/0x15a0 net/batman-adv/originator.c:1243
batadv_purge_orig+0x15/0x60 net/batman-adv/originator.c:1272
process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
kthread+0x3f6/0x4f0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298