INFO: task syz-executor.4:7240 blocked for more than 144 seconds.
Not tainted 5.19.0-syzkaller-02858-ge2b542100719 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:25600 pid: 7240 ppid: 3759 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5178 [inline]
__schedule+0x957/0xe20 kernel/sched/core.c:6490
schedule+0xcb/0x190 kernel/sched/core.c:6566
schedule_timeout+0xac/0x300 kernel/time/timer.c:1911
do_wait_for_common+0x3ea/0x560 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+0x46/0x60 kernel/sched/completion.c:138
kthread_stop+0xf8/0x200 kernel/kthread.c:708
ext4_stop_mmpd+0x43/0xb0 fs/ext4/mmp.c:253
__ext4_fill_super+0x6b00/0x9aa0 fs/ext4/super.c:5458
ext4_fill_super+0x30d/0x6f0 fs/ext4/super.c:5507
get_tree_bdev+0x400/0x620 fs/super.c:1292
vfs_get_tree+0x88/0x270 fs/super.c:1497
do_new_mount+0x289/0xad0 fs/namespace.c:3040
do_mount fs/namespace.c:3383 [inline]
__do_sys_mount fs/namespace.c:3591 [inline]
__se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3568
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f38fde8a73a
RSP: 002b:00007f38fcdfdf88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f38fde8a73a
RDX: 0000000020000000 RSI: 0000000020000040 RDI: 00007f38fcdfdfe0
RBP: 00007f38fcdfe020 R08: 00007f38fcdfe020 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000
R13: 0000000020000040 R14: 00007f38fcdfdfe0 R15: 0000000020013800
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8cb1ef70 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8cb1f770 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
#0: ffffffff8cb1eda0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
3 locks held by kworker/u4:3/46:
2 locks held by kworker/u4:4/55:
1 lock held by udevd/2969:
2 locks held by getty/3275:
#0: ffff888026a2d098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc90002d162e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6e8/0x1e50 drivers/tty/n_tty.c:2124
6 locks held by kworker/0:7/3680:
#0: ffff888011e29938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc90003dbfd00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffff8880212ba190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#2: ffff8880212ba190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1bf/0xd70 drivers/usb/core/hub.c:5691
#3: ffff8880212bd4f8 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3095 [inline]
#3: ffff8880212bd4f8 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect+0x4fc/0x2930 drivers/usb/core/hub.c:5259
#4: ffff8881476d5e68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect+0x524/0x2930 drivers/usb/core/hub.c:5260
#5: ffffffff8d55a330 (ehci_cf_port_reset_rwsem){.+.+}-{3:3}, at: hub_port_reset+0x1cd/0x1230 drivers/usb/core/hub.c:2953
1 lock held by syz-executor.4/7240:
#0: ffff8880450d00e0 (&type->s_umount_key#27/1){+.+.}-{3:3}, at: alloc_super+0x20b/0x8f0 fs/super.c:228
1 lock held by syz-executor.2/7483:
#0: ffff8880209a60e0 (&type->s_umount_key#27/1){+.+.}-{3:3}, at: alloc_super+0x20b/0x8f0 fs/super.c:228
2 locks held by syz-executor.1/7777:
1 lock held by syz-executor.1/7795:
4 locks held by syz-executor.3/7811:
1 lock held by syz-executor.3/7813:
#0: ffff8880259380e0 (&type->s_umount_key#27/1){+.+.}-{3:3}, at: alloc_super+0x20b/0x8f0 fs/super.c:228
1 lock held by syz-executor.3/7816:
#0: ffffffff8d229588 (tty_mutex){+.+.}-{3:3}, at: tty_open_by_driver drivers/tty/tty_io.c:2050 [inline]
#0: ffffffff8d229588 (tty_mutex){+.+.}-{3:3}, at: tty_open+0x235/0xdc0 drivers/tty/tty_io.c:2133
2 locks held by syz-executor.5/7806:
#0: ffff88804395c0e0 (&type->s_umount_key#27/1){+.+.}-{3:3}, at: alloc_super+0x20b/0x8f0 fs/super.c:228
#1: ffffffff8ccc1028 (ext4_li_mtx){+.+.}-{3:3}, at: ext4_register_li_request+0x6f/0x9b0 fs/ext4/super.c:3966
1 lock held by syz-executor.4/7817:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 5.19.0-syzkaller-02858-ge2b542100719 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x473/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x168/0x280 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xcd5/0xd20 kernel/hung_task.c:369
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 7811 Comm: syz-executor.3 Not tainted 5.19.0-syzkaller-02858-ge2b542100719 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
RIP: 0010:arch_static_branch include/trace/events/lock.h:95 [inline]
RIP: 0010:static_key_false include/linux/jump_label.h:207 [inline]
RIP: 0010:trace_contention_begin+0x0/0x140 include/trace/events/lock.h:95
Code: 89 ef e8 b3 a5 73 00 e9 c5 fe ff ff 89 d9 80 e1 07 fe c1 38 c1 0f 8c 6f ff ff ff 48 89 df e8 e7 a5 73 00 e9 62 ff ff ff 66 90 <55> 41 56 53 0f 1f 44 00 00 65 8b 1d d0 c4 9a 7e 83 fb 08 73 7b 89
RSP: 0018:ffffc9000513f5f8 EFLAGS: 00000296
RAX: 600eb399d80c3900 RBX: ffff88807e638580 RCX: ffff888045874570
RDX: dffffc0000000000 RSI: 0000000000000021 RDI: ffff88807e638518
RBP: ffffc9000513f780 R08: dffffc0000000000 R09: fffffbfff1faa81e
R10: fffffbfff1faa81e R11: 1ffffffff1faa81d R12: 0000000000000000
R13: ffff88807e638518 R14: 0000000000000000 R15: 0000000000000000
FS: 00007f91c1f35700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020225030 CR3: 00000000225a7000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__mutex_lock_common+0x1ef/0x26c0 kernel/locking/mutex.c:605
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799
__unix_dgram_recvmsg+0x24c/0x1200 net/unix/af_unix.c:2387
____sys_recvmsg+0x285/0x530
___sys_recvmsg net/socket.c:2746 [inline]
do_recvmmsg+0x490/0xb20 net/socket.c:2840
__sys_recvmmsg net/socket.c:2919 [inline]
__do_sys_recvmmsg net/socket.c:2942 [inline]
__se_sys_recvmmsg net/socket.c:2935 [inline]
__x64_sys_recvmmsg+0x195/0x240 net/socket.c:2935
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f91c0e89209
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f91c1f35168 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f91c0f9c030 RCX: 00007f91c0e89209
RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007f91c0ee3161 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffec9b3283f R14: 00007f91c1f35300 R15: 0000000000022000