INFO: task syz-executor.1:31430 blocked for more than 143 seconds.
Not tainted 6.7.0-rc4-syzkaller-00009-gbee0e7762ad2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:22800 pid:31430 tgid:31429 ppid:5110 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xedb/0x5af0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0xe9/0x270 kernel/sched/core.c:6778
io_schedule+0xbe/0x130 kernel/sched/core.c:8998
bit_wait_io+0x16/0xe0 kernel/sched/wait_bit.c:209
__wait_on_bit_lock+0x112/0x1a0 kernel/sched/wait_bit.c:90
out_of_line_wait_on_bit_lock+0xdb/0x110 kernel/sched/wait_bit.c:117
wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline]
__lock_buffer+0x67/0x70 fs/buffer.c:71
lock_buffer include/linux/buffer_head.h:404 [inline]
ext4_quota_write+0x573/0x650 fs/ext4/super.c:7251
qtree_write_dquot+0x268/0x570 fs/quota/quota_tree.c:431
v2_write_dquot+0x1d6/0x250 fs/quota/quota_v2.c:358
dquot_commit+0x36d/0x590 fs/quota/dquot.c:512
ext4_write_dquot+0x259/0x320 fs/ext4/super.c:6877
ext4_mark_dquot_dirty fs/ext4/super.c:6925 [inline]
ext4_mark_dquot_dirty+0x113/0x1b0 fs/ext4/super.c:6919
mark_dquot_dirty fs/quota/dquot.c:372 [inline]
mark_all_dquot_dirty fs/quota/dquot.c:410 [inline]
dquot_alloc_inode+0x35c/0x730 fs/quota/dquot.c:1780
ext4_xattr_inode_alloc_quota fs/ext4/xattr.c:932 [inline]
ext4_xattr_set_entry+0xa25/0x3ce0 fs/ext4/xattr.c:1715
ext4_xattr_block_set+0x678/0x3180 fs/ext4/xattr.c:1970
ext4_xattr_set_handle+0xd70/0x1420 fs/ext4/xattr.c:2456
ext4_xattr_set+0x149/0x370 fs/ext4/xattr.c:2558
__vfs_setxattr+0x173/0x1d0 fs/xattr.c:201
__vfs_setxattr_noperm+0x127/0x5e0 fs/xattr.c:235
__vfs_setxattr_locked+0x17e/0x250 fs/xattr.c:296
vfs_setxattr+0x146/0x350 fs/xattr.c:322
do_setxattr+0x142/0x170 fs/xattr.c:630
setxattr+0x159/0x170 fs/xattr.c:653
path_setxattr+0x175/0x1d0 fs/xattr.c:672
__do_sys_lsetxattr fs/xattr.c:695 [inline]
__se_sys_lsetxattr fs/xattr.c:691 [inline]
__x64_sys_lsetxattr+0xc1/0x160 fs/xattr.c:691
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fd86bc7cae9
RSP: 002b:00007fd86c9380c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd
RAX: ffffffffffffffda RBX: 00007fd86bd9bf80 RCX: 00007fd86bc7cae9
RDX: 0000000020001580 RSI: 0000000020001540 RDI: 0000000020001380
RBP: 00007fd86bcc847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000bd5 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fd86bd9bf80 R15: 00007ffd37f3cad8
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8cfabbe0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
#0: ffffffff8cfabbe0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]
#0: ffffffff8cfabbe0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
2 locks held by getty/4822:
#0: ffff88802a0ea0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc6/0x1490 drivers/tty/n_tty.c:2201
1 lock held by syz-executor.4/5117:
#0: ffff888080a4c0e0 (&type->s_umount_key#32){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff888080a4c0e0 (&type->s_umount_key#32){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff888080a4c0e0 (&type->s_umount_key#32){++++}-{3:3}, at: deactivate_super+0xd6/0x100 fs/super.c:516
2 locks held by kworker/u4:5/6339:
#0: ffff888013071938 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 kernel/workqueue.c:2605
#1: ffffc900032e7d80 ((quota_release_work).work){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 kernel/workqueue.c:2606
6 locks held by syz-executor.1/31430:
#0: ffff888082d4e418 (sb_writers#4){.+.+}-{0:0}, at: path_setxattr+0xc3/0x1d0 fs/xattr.c:670
#1: ffff88808b460400 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff88808b460400 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: vfs_setxattr+0x123/0x350 fs/xattr.c:321
#2: ffff88808b4600c8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
#2: ffff88808b4600c8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_xattr_set_handle+0x159/0x1420 fs/ext4/xattr.c:2371
#3: ffffffff8d1c5a70 (dquot_srcu){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:116 [inline]
#3: ffffffff8d1c5a70 (dquot_srcu){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:215 [inline]
#3: ffffffff8d1c5a70 (dquot_srcu){.+.+}-{0:0}, at: dquot_alloc_inode+0x20b/0x730 fs/quota/dquot.c:1758
#4: ffff88808827d928 (&dquot->dq_lock){+.+.}-{3:3}, at: dquot_commit+0x51/0x590 fs/quota/dquot.c:505
#5: ffff888082d4e210 (&s->s_dquot.dqio_sem){++++}-{3:3}, at: v2_write_dquot+0x14b/0x250 fs/quota/quota_v2.c:356
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.7.0-rc4-syzkaller-00009-gbee0e7762ad2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x277/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x299/0x300 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+0xf87/0x1210 kernel/hung_task.c:379
kthread+0x2c6/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 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: 12 Comm: kworker/u4:1 Not tainted 6.7.0-rc4-syzkaller-00009-gbee0e7762ad2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
Workqueue: bat_events batadv_tt_purge
RIP: 0010:lock_release+0x5b/0x690 kernel/locking/lockdep.c:5762
Code: b3 8a b5 41 48 c1 ed 03 48 c7 44 24 18 60 0a 82 8c 48 01 e8 48 c7 44 24 20 50 0c 68 81 c7 00 f1 f1 f1 f1 c7 40 04 f1 f1 04 f2 40 08 04 f3 f3 f3 65 48 8b 04 25 28 00 00 00 48 89 84 24 88 00
RSP: 0018:ffffc90000117af8 EFLAGS: 00000282
RAX: fffff52000022f61 RBX: ffff8880814a2540 RCX: ffffffff816880be
RDX: ffff888015e6d940 RSI: ffffffff8a4ba352 RDI: ffff8880814a2558
RBP: 1ffff92000022f61 R08: 0000000000000001 R09: fffff52000022f6c
R10: 0000000000000003 R11: 0000000000000002 R12: ffff8880814a2558
R13: ffff8880814484a8 R14: 0000000000000095 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c000065fc0 CR3: 0000000027417000 CR4: 0000000000350ef0
Call Trace:
__raw_spin_unlock_bh include/linux/spinlock_api_smp.h:165 [inline]
_raw_spin_unlock_bh+0x16/0x30 kernel/locking/spinlock.c:210
spin_unlock_bh include/linux/spinlock.h:396 [inline]
batadv_tt_global_purge net/batman-adv/translation-table.c:2299 [inline]
batadv_tt_purge+0x262/0xbb0 net/batman-adv/translation-table.c:3561
process_one_work+0x886/0x15d0 kernel/workqueue.c:2630
process_scheduled_works kernel/workqueue.c:2703 [inline]
worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784
kthread+0x2c6/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242