INFO: task syz-executor.2:5037 blocked for more than 143 seconds.
Not tainted 6.4.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:20632 pid:5037 ppid:1 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
schedule_timeout+0x1bd/0x310 kernel/time/timer.c:2167
gfs2_gl_hash_clear+0x1a3/0x310 fs/gfs2/glock.c:2198
gfs2_put_super+0x827/0x890 fs/gfs2/super.c:642
generic_shutdown_super+0x134/0x340 fs/super.c:500
kill_block_super+0x84/0xf0 fs/super.c:1407
deactivate_locked_super+0xa4/0x110 fs/super.c:331
cleanup_mnt+0x426/0x4c0 fs/namespace.c:1177
task_work_run+0x24a/0x300 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fc11fe8d5d7
RSP: 002b:00007ffc94ba37e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fc11fe8d5d7
RDX: 00007ffc94ba38bb RSI: 000000000000000a RDI: 00007ffc94ba38b0
RBP: 00007ffc94ba38b0 R08: 00000000ffffffff R09: 00007ffc94ba3680
R10: 00005555556d0893 R11: 0000000000000246 R12: 00007fc11fee6cdc
R13: 00007ffc94ba4970 R14: 00005555556d0810 R15: 00007ffc94ba49b0
Showing all locks held in the system:
5 locks held by kworker/u4:0/10:
#0: ffff8880b983c1d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
#1: ffff8880b98287c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3a7/0x770 kernel/sched/psi.c:984
#2: ffff8880b99287c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: update_rq_clock_task kernel/sched/core.c:725 [inline]
#2: ffff8880b99287c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: update_rq_clock+0x22b/0x890 kernel/sched/core.c:769
#3: ffffffff91e491d0 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_activate+0x16f/0x8b0 lib/debugobjects.c:697
#4: ffffffff91e2d0a8 (&obj_hash[i].lock){-.-.}-{2:2}, at: krc_this_cpu_lock kernel/rcu/tree.c:2861 [inline]
#4: ffffffff91e2d0a8 (&obj_hash[i].lock){-.-.}-{2:2}, at: add_ptr_to_bulk_krc_lock kernel/rcu/tree.c:3248 [inline]
#4: ffffffff91e2d0a8 (&obj_hash[i].lock){-.-.}-{2:2}, at: kvfree_call_rcu+0x1a5/0x8d0 kernel/rcu/tree.c:3333
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8cf27670 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8cf27a30 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518
1 lock held by khungtaskd/28:
#0: ffffffff8cf274a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4746:
#0: ffff888029f20098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2176
1 lock held by syz-executor.2/5037:
#0: ffff8880379d20e0 (&type->s_umount_key#100){++++}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:361
4 locks held by kworker/1:4/5088:
#0: ffff8880b993c1d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
#1: ffff8880b99287c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:996
#2: ffff8880b99295d8 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x120/0x260 kernel/time/timer.c:999
#3: ffffffff91dcd108 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_activate+0x16f/0x8b0 lib/debugobjects.c:697
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.4.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x187/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xec2/0xf00 kernel/hung_task.c:379
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4434 Comm: klogd Not tainted 6.4.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
RIP: 0010:security_socket_sendmsg+0x39/0xa0
Code: 89 d6 49 89 f7 49 89 fc 49 bd 00 00 00 00 00 fc ff df e8 ea a0 9b fd 48 c7 c3 f0 3d a4 8c 48 89 d8 48 c1 e8 03 42 80 3c 28 00 <74> 08 48 89 df e8 7d 72 f3 fd 48 8b 1b 48 85 db 74 31 48 8d 6b 18
RSP: 0018:ffffc90002f6fc88 EFLAGS: 00000246
RAX: 1ffffffff1948e70 RBX: ffffffff8ca47380 RCX: ffff88807e3a1dc0
RDX: 0000000000000000 RSI: ffffc90002f6fdc0 RDI: ffff88801e145a00
RBP: ffffffff8ca47398 R08: ffffffff83f570f5 R09: ffffffff83f5705d
R10: 0000000000000003 R11: ffff88807e3a1dc0 R12: ffff88801e145a00
R13: dffffc0000000000 R14: 0000000000000046 R15: ffffc90002f6fdc0
FS: 00007f778aee7380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055989a3c1680 CR3: 000000002d5cd000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
sock_sendmsg net/socket.c:744 [inline]
__sys_sendto+0x3df/0x630 net/socket.c:2144
__do_sys_sendto net/socket.c:2156 [inline]
__se_sys_sendto net/socket.c:2152 [inline]
__x64_sys_sendto+0xde/0xf0 net/socket.c:2152
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f778b0499b5
Code: 8b 44 24 08 48 83 c4 28 48 98 c3 48 98 c3 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 26 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 7a 48 8b 15 44 c4 0c 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffc71055c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f778b0499b5
RDX: 0000000000000046 RSI: 000055f60617a8f0 RDI: 0000000000000003
RBP: 000055f606172910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000013
R13: 00007f778b1d7212 R14: 00007ffc71055d78 R15: 0000000000000000