INFO: task syz.0.45:4048 blocked for more than 143 seconds.
Not tainted 6.1.129-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.45 state:D stack:13032 pid:4048 ppid:2393 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5243 [inline]
__schedule+0x591/0x860 kernel/sched/core.c:6560
schedule+0x50/0xb0 kernel/sched/core.c:6636
schedule_timeout+0x84/0x190 kernel/time/timer.c:1941
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common+0xfa/0x1b0 kernel/sched/completion.c:117
kthread_stop+0x6c/0x170 kernel/kthread.c:711
signal_our_withdraw fs/gfs2/util.c:159 [inline]
gfs2_withdraw+0x18d/0x7f0 fs/gfs2/util.c:354
gfs2_metatype_check_ii+0x33/0x40 fs/gfs2/util.c:533
gfs2_metatype_check_i fs/gfs2/util.h:129 [inline]
gfs2_quota_init+0x53a/0x5d0 fs/gfs2/quota.c:1406
gfs2_make_fs_rw+0x13b/0x180 fs/gfs2/super.c:155
gfs2_fill_super+0xbc5/0xc70 fs/gfs2/ops_fstype.c:1271
get_tree_bdev+0x1c3/0x250 fs/super.c:1366
gfs2_get_tree+0x1c/0x80 fs/gfs2/ops_fstype.c:1327
vfs_get_tree+0x1c/0x80 fs/super.c:1573
do_new_mount+0x15a/0x370 fs/namespace.c:3056
do_mount fs/namespace.c:3399 [inline]
__do_sys_mount fs/namespace.c:3607 [inline]
__se_sys_mount+0x14b/0x1b0 fs/namespace.c:3584
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0x80 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7ff7415874ca
RSP: 002b:00007ff742312e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ff742312ef0 RCX: 00007ff7415874ca
RDX: 0000000020000400 RSI: 0000000020000040 RDI: 00007ff742312eb0
RBP: 0000000020000400 R08: 00007ff742312ef0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000040
R13: 00007ff742312eb0 R14: 00000000000125bb R15: 0000000020000380
INFO: task gfs2_quotad:4080 blocked for more than 143 seconds.
Not tainted 6.1.129-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:gfs2_quotad state:D
stack:14120 pid:4080 ppid:2 flags:0x00024000
Call Trace:
context_switch kernel/sched/core.c:5243 [inline]
__schedule+0x591/0x860 kernel/sched/core.c:6560
schedule+0x50/0xb0 kernel/sched/core.c:6636
bit_wait+0x8/0x50 kernel/sched/wait_bit.c:199
__wait_on_bit+0xc7/0x160 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x95/0xb0 kernel/sched/wait_bit.c:64
wait_on_bit include/linux/wait_bit.h:76 [inline]
__gfs2_glock_dq+0x1b3/0x2c0 fs/gfs2/glock.c:1641
gfs2_glock_dq+0x7e/0x90 fs/gfs2/glock.c:1713
gfs2_glock_dq_uninit+0xb/0x50 fs/gfs2/glock.c:1733
gfs2_statfs_sync+0x18a/0x1c0 fs/gfs2/super.c:310
quotad_check_timeo fs/gfs2/quota.c:1519 [inline]
gfs2_quotad+0x223/0x330 fs/gfs2/quota.c:1561
kthread+0xd1/0xe0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Showing all locks held in the system:
2 locks held by kworker/u4:1/11:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff82fd7bc8 (rcu_tasks.tasks_gp_mutex){....}-{3:3}, at: rcu_tasks_one_gp kernel/rcu/tasks.h:517 [inline]
#0: ffffffff82fd7bc8 (rcu_tasks.tasks_gp_mutex){....}-{3:3}, at: rcu_tasks_kthread+0x98/0x450 kernel/rcu/tasks.h:562
1 lock held by khungtaskd/27:
#0: ffffffff82fd7aa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
#0: ffffffff82fd7aa0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline]
#0: ffffffff82fd7aa0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x2c/0x100 kernel/locking/lockdep.c:6510
2 locks held by getty/887:
#0: ffff88810aef4898 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x1c/0x40 drivers/tty/tty_ldisc.c:244
#1: ffffc900003fb2f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x1a2/0x6e0 drivers/tty/n_tty.c:2198
2 locks held by syz.0.45/4048:
#0: ffff8881016d00e0 (&type->s_umount_key#45/1){....}-{3:3}, at: alloc_super+0xd2/0x390 fs/super.c:228
#1: ffff888106735240 (&sdp->sd_freeze_mutex){....}-{3:3}, at: signal_our_withdraw fs/gfs2/util.c:155 [inline]
#1: ffff888106735240 (&sdp->sd_freeze_mutex){....}-{3:3}, at: gfs2_withdraw+0x16b/0x7f0 fs/gfs2/util.c:354
2 locks held by syz.5.653/5854:
4 locks held by syz.8.655/5860:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 6.1.129-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x7f/0xc2 lib/dump_stack.c:106
nmi_cpu_backtrace+0x13e/0x160 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0xa5/0x160 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+0x54d/0x570 kernel/hung_task.c:377
kthread+0xd1/0xe0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5860 Comm: syz.8.655 Not tainted 6.1.129-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:io_serial_out+0x11/0x20 drivers/tty/serial/8250/8250_port.c:468
Code: 00 00 d3 e2 03 57 40 ec 0f b6 c0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 0f b6 8f f1 00 00 00 d3 e6 03 77 40 89 d0 89 f2 ee 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 55 41 56 53 48 89 fb
RSP: 0018:ffffc900021cb7b0 EFLAGS: 00000006
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 00000000000003f9 RSI: 00000000000003f9 RDI: ffffffff87ac8b80
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 6572617764726148 R12: ffffffff878c79b0
R13: ffffc900021cb967 R14: 0000000000000071 R15: ffffffff87ac8b80
FS: 00007ffab26646c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffab1769160 CR3: 00000001077f8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
serial8250_console_write+0xd1/0x640 drivers/tty/serial/8250/8250_port.c:3439
call_console_driver kernel/printk/printk.c:1977 [inline]
console_emit_next_record+0x363/0x480 kernel/printk/printk.c:2777
console_unlock+0x145/0x270 kernel/printk/printk.c:2906
vprintk_emit+0xf7/0x390 kernel/printk/printk.c:2303
_printk+0x54/0x6e kernel/printk/printk.c:2328
printk_stack_address arch/x86/kernel/dumpstack.c:72 [inline]
show_trace_log_lvl+0x388/0x410 arch/x86/kernel/dumpstack.c:285
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x7f/0xc2 lib/dump_stack.c:106
sysfs_warn_dup fs/sysfs/dir.c:30 [inline]
sysfs_create_dir_ns+0xe5/0x130 fs/sysfs/dir.c:63
create_dir lib/kobject.c:63 [inline]
kobject_add_internal+0x131/0x340 lib/kobject.c:231
kobject_add_varg lib/kobject.c:366 [inline]
kobject_init_and_add+0xd0/0x150 lib/kobject.c:449
gfs2_sys_fs_add+0xf2/0x1e0 fs/gfs2/sys.c:727
gfs2_fill_super+0x719/0xc70 fs/gfs2/ops_fstype.c:1199
get_tree_bdev+0x1c3/0x250 fs/super.c:1366
gfs2_get_tree+0x1c/0x80 fs/gfs2/ops_fstype.c:1327
vfs_get_tree+0x1c/0x80 fs/super.c:1573
do_new_mount+0x15a/0x370 fs/namespace.c:3056
do_mount fs/namespace.c:3399 [inline]
__do_sys_mount fs/namespace.c:3607 [inline]
__se_sys_mount+0x14b/0x1b0 fs/namespace.c:3584
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0x80 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7ffab17874ca
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffab2663e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffab2663ef0 RCX: 00007ffab17874ca
RDX: 0000000020000400 RSI: 0000000020000040 RDI: 00007ffab2663eb0
RBP: 0000000020000400 R08: 00007ffab2663ef0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000040
R13: 00007ffab2663eb0 R14: 00000000000125bb R15: 0000000020000380