INFO: task syz-executor.1:7454 blocked for more than 143 seconds.
Not tainted 6.1.71-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:19616 pid:7454 ppid:3585 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5245 [inline]
__schedule+0x142d/0x4550 kernel/sched/core.c:6558
schedule+0xbf/0x180 kernel/sched/core.c:6634
io_schedule+0x88/0x100 kernel/sched/core.c:8786
bit_wait_io+0xe/0xc0 kernel/sched/wait_bit.c:209
__wait_on_bit_lock+0xcd/0x520 kernel/sched/wait_bit.c:90
out_of_line_wait_on_bit_lock+0x1d0/0x250 kernel/sched/wait_bit.c:117
lock_buffer include/linux/buffer_head.h:397 [inline]
ext4_quota_write+0x378/0x570 fs/ext4/super.c:7150
qtree_write_dquot+0x23f/0x530 fs/quota/quota_tree.c:431
v2_write_dquot+0x11c/0x190 fs/quota/quota_v2.c:358
dquot_commit+0x3c0/0x510 fs/quota/dquot.c:512
ext4_write_dquot+0x1e8/0x2b0 fs/ext4/super.c:6753
mark_dquot_dirty fs/quota/dquot.c:372 [inline]
mark_all_dquot_dirty fs/quota/dquot.c:410 [inline]
dquot_alloc_inode+0x68a/0xb50 fs/quota/dquot.c:1838
ext4_xattr_inode_alloc_quota fs/ext4/xattr.c:883 [inline]
ext4_xattr_set_entry+0xb06/0x3fb0 fs/ext4/xattr.c:1665
ext4_xattr_block_set+0x698/0x3630 fs/ext4/xattr.c:1920
ext4_xattr_set_handle+0xdac/0x1560 fs/ext4/xattr.c:2406
ext4_xattr_set+0x231/0x3d0 fs/ext4/xattr.c:2508
__vfs_setxattr+0x3e7/0x420 fs/xattr.c:182
__vfs_setxattr_noperm+0x12a/0x5e0 fs/xattr.c:216
vfs_setxattr+0x21d/0x420 fs/xattr.c:309
do_setxattr fs/xattr.c:594 [inline]
setxattr+0x250/0x2b0 fs/xattr.c:617
path_setxattr+0x1bc/0x2a0 fs/xattr.c:636
__do_sys_setxattr fs/xattr.c:652 [inline]
__se_sys_setxattr fs/xattr.c:648 [inline]
__x64_sys_setxattr+0xb7/0xd0 fs/xattr.c:648
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f488b27cd29
RSP: 002b:00007f488c0230c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007f488b3abf80 RCX: 00007f488b27cd29
RDX: 0000000020000380 RSI: 0000000020000340 RDI: 00000000200002c0
RBP: 00007f488b2c947a R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000ffed R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f488b3abf80 R15: 00007ffde1da7a78
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d12a4f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:516
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d12acf0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:516
1 lock held by khungtaskd/28:
#0: ffffffff8d12a320 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:306 [inline]
#0: ffffffff8d12a320 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]
#0: ffffffff8d12a320 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6494
2 locks held by getty/3302:
#0: ffff888143ff4098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a7/0x1db0 drivers/tty/n_tty.c:2188
1 lock held by syz-executor.2/3584:
#0: ffff8880319f60e0 (&type->s_umount_key#31){++++}-{3:3}, at: deactivate_super+0xa9/0xe0 fs/super.c:362
2 locks held by kworker/u4:14/4151:
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267
#1: ffffc900068e7d20 ((quota_release_work).work){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267
6 locks held by syz-executor.1/7454:
#0: ffff88801e894460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:393
#1: ffff88808f762218 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff88808f762218 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: vfs_setxattr+0x1dd/0x420 fs/xattr.c:308
#2: ffff88808f761ee0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
#2: ffff88808f761ee0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_xattr_set_handle+0x270/0x1560 fs/ext4/xattr.c:2321
#3: ffffffff8d270328 (dquot_srcu){....}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:306 [inline]
#3: ffffffff8d270328 (dquot_srcu){....}-{0:0}, at: srcu_read_lock include/linux/srcu.h:165 [inline]
#3: ffffffff8d270328 (dquot_srcu){....}-{0:0}, at: dquot_alloc_inode+0x199/0xb50 fs/quota/dquot.c:1816
#4: ffff88809503c428 (&dquot->dq_lock){+.+.}-{3:3}, at: dquot_commit+0x57/0x510 fs/quota/dquot.c:505
#5: ffff88801e894208 (&s->s_dquot.dqio_sem){++++}-{3:3}, at: v2_write_dquot+0x8c/0x190 fs/quota/quota_v2.c:356
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.1.71-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+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x4e1/0x560 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1b0/0x3f0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xf88/0xfd0 kernel/hung_task.c:377
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4204 Comm: kworker/u4:16 Not tainted 6.1.71-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Workqueue: phy16 ieee80211_iface_work
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:236 [inline]
RIP: 0010:__sanitizer_cov_trace_switch+0x5d/0xe0 kernel/kcov.c:340
Code: 92 00 00 00 4c 8b 04 c5 d0 ef ef 8a 4c 8b 4c 24 20 65 4c 8b 1d 94 d5 77 7e 31 d2 eb 08 48 ff c2 49 39 d2 74 71 4c 8b 74 d6 10 <65> 8b 05 84 d5 77 7e a9 00 01 ff 00 74 11 a9 00 01 00 00 74 de 41
RSP: 0018:ffffc9000ace72d8 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000000000008b
RDX: 0000000000000016 RSI: ffffffff8e4f25b0 RDI: 0000000000000000
RBP: ffffc9000ace76d0 R08: 0000000000000001 R09: ffffffff8a14a410
R10: 000000000000002b R11: ffff888088299dc0 R12: 0000000000000006
R13: 0000000000000008 R14: 0000000000000077 R15: ffff88808745dc74
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00fca5000 CR3: 000000000ce8e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
_ieee802_11_parse_elems_full+0x970/0x3970 net/mac80211/util.c:1108
ieee802_11_parse_elems_full+0xd60/0x1380 net/mac80211/util.c:1522
ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2247 [inline]
ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2254 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1605 [inline]
ieee80211_ibss_rx_queued_mgmt+0x430/0x2dd0 net/mac80211/ibss.c:1638
ieee80211_iface_process_skb net/mac80211/iface.c:1632 [inline]
ieee80211_iface_work+0x7aa/0xce0 net/mac80211/iface.c:1686
process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306