INFO: task syz-executor.3:8596 blocked for more than 143 seconds.
Not tainted 6.7.0-rc5-syzkaller-gd5b235ec8eab #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:0 pid:8596 tgid:8577 ppid:6147 flags:0x00000005
Call trace:
__switch_to+0x314/0x560 arch/arm64/kernel/process.c:556
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0x1354/0x2360 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0xb8/0x19c kernel/sched/core.c:6778
io_schedule+0x8c/0x12c kernel/sched/core.c:8998
bit_wait_io+0x1c/0xac kernel/sched/wait_bit.c:209
__wait_on_bit_lock+0xcc/0x1e8 kernel/sched/wait_bit.c:90
out_of_line_wait_on_bit_lock+0x194/0x21c kernel/sched/wait_bit.c:117
wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline]
__lock_buffer+0x78/0xac fs/buffer.c:71
lock_buffer include/linux/buffer_head.h:404 [inline]
ext4_quota_write+0x36c/0x54c fs/ext4/super.c:7251
qtree_write_dquot+0x1dc/0x488 fs/quota/quota_tree.c:431
v2_write_dquot+0xf4/0x188 fs/quota/quota_v2.c:358
dquot_commit+0x14c/0x240 fs/quota/dquot.c:512
ext4_write_dquot+0x1b4/0x288 fs/ext4/super.c:6877
ext4_mark_dquot_dirty+0xe8/0x140 fs/ext4/super.c:6925
mark_dquot_dirty fs/quota/dquot.c:372 [inline]
mark_all_dquot_dirty fs/quota/dquot.c:410 [inline]
dquot_alloc_inode+0x5a4/0xb84 fs/quota/dquot.c:1780
ext4_xattr_inode_alloc_quota fs/ext4/xattr.c:932 [inline]
ext4_xattr_set_entry+0x958/0x30a8 fs/ext4/xattr.c:1715
ext4_xattr_block_set+0x54c/0x2c24 fs/ext4/xattr.c:1970
ext4_xattr_set_handle+0xc68/0x12d0 fs/ext4/xattr.c:2456
ext4_xattr_set+0x1e0/0x354 fs/ext4/xattr.c:2558
ext4_xattr_security_set+0x4c/0x64 fs/ext4/xattr_security.c:31
__vfs_setxattr+0x3d8/0x400 fs/xattr.c:201
__vfs_setxattr_noperm+0x110/0x528 fs/xattr.c:235
__vfs_setxattr_locked+0x1ec/0x218 fs/xattr.c:296
vfs_setxattr+0x1a8/0x344 fs/xattr.c:322
do_setxattr fs/xattr.c:630 [inline]
setxattr+0x208/0x29c fs/xattr.c:653
__do_sys_fsetxattr fs/xattr.c:709 [inline]
__se_sys_fsetxattr fs/xattr.c:698 [inline]
__arm64_sys_fsetxattr+0x1a8/0x224 fs/xattr.c:698
__invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51
el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136
do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155
el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678
el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffff80008e6c4e00 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:300
2 locks held by kworker/u4:2/40:
#0: ffff0000c0021938 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x560/0x1204 kernel/workqueue.c:2600
#1: ffff8000943e7c20 ((quota_release_work).work){+.+.}-{0:0}, at: process_one_work+0x5a0/0x1204 kernel/workqueue.c:2602
2 locks held by kworker/u4:12/598:
#0: ffff0001b4166d98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:558 [inline]
#0: ffff0001b4166d98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1349 [inline]
#0: ffff0001b4166d98 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1663 [inline]
#0: ffff0001b4166d98 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x2dc/0x2360 kernel/sched/core.c:6604
#1: ffff0001b4152e48 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3c0/0x618 kernel/sched/psi.c:988
2 locks held by getty/5860:
#0: ffff0000d237e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
#1: ffff800094e402f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2201
1 lock held by syz-executor.5/6149:
#0: ffff0000c239a0e0 (&type->s_umount_key#29){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff0000c239a0e0 (&type->s_umount_key#29){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff0000c239a0e0 (&type->s_umount_key#29){++++}-{3:3}, at: deactivate_super+0xd8/0x100 fs/super.c:516
6 locks held by syz-executor.3/8596:
#0: ffff0000fe9e2418 (sb_writers#3){.+.+}-{0:0}, at: mnt_want_write_file+0x64/0x1e8 fs/namespace.c:448
#1: ffff00012ab55e00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff00012ab55e00 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: vfs_setxattr+0x17c/0x344 fs/xattr.c:321
#2: ffff00012ab55ac8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
#2: ffff00012ab55ac8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_xattr_set_handle+0x1dc/0x12d0 fs/ext4/xattr.c:2371
#3: ffff80008e805950 (dquot_srcu){.+.+}-{0:0}, at: srcu_lock_acquire+0x10/0x4c include/linux/srcu.h:115
#4: ffff00012d1cc0a8 (&dquot->dq_lock){+.+.}-{3:3}, at: dquot_commit+0x54/0x240 fs/quota/dquot.c:505
#5: ffff0000fe9e2210 (&s->s_dquot.dqio_sem){++++}-{3:3}, at: v2_write_dquot+0x84/0x188 fs/quota/quota_v2.c:356
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