INFO: task syz.0.17:4357 blocked for more than 143 seconds.
Not tainted 5.15.189-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.17 state:D stack:24680 pid: 4357 ppid: 4293 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x11b8/0x43b0 kernel/sched/core.c:6376
schedule+0x11b/0x1e0 kernel/sched/core.c:6459
bit_wait+0xd/0xc0 kernel/sched/wait_bit.c:199
__wait_on_bit kernel/sched/wait_bit.c:49 [inline]
out_of_line_wait_on_bit+0x15e/0x200 kernel/sched/wait_bit.c:64
wait_on_bit include/linux/wait_bit.h:76 [inline]
gfs2_glock_wait+0xd9/0x1c0 fs/gfs2/glock.c:1282
gfs2_glock_nq_init fs/gfs2/glock.h:246 [inline]
gfs2_statfs_init+0xf9/0x490 fs/gfs2/super.c:190
gfs2_fill_super+0x1749/0x1f50 fs/gfs2/ops_fstype.c:1257
get_tree_bdev+0x3f1/0x610 fs/super.c:1325
gfs2_get_tree+0x4d/0x1e0 fs/gfs2/ops_fstype.c:1332
vfs_get_tree+0x88/0x270 fs/super.c:1530
do_new_mount+0x24a/0xa40 fs/namespace.c:3014
do_mount fs/namespace.c:3357 [inline]
__do_sys_mount fs/namespace.c:3565 [inline]
__se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3542
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fa8a133438a
RSP: 002b:00007ffcdeb3c758 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffcdeb3c7e0 RCX: 00007fa8a133438a
RDX: 0000200000000400 RSI: 0000200000012500 RDI: 00007ffcdeb3c7a0
RBP: 0000200000000400 R08: 00007ffcdeb3c7e0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
R13: 00007ffcdeb3c7a0 R14: 00000000000125e1 R15: 00002000000000c0
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8c11c360 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3946:
#0: ffff88802ad3e098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc90002d032e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x5ba/0x1a30 drivers/tty/n_tty.c:2158
1 lock held by syz.0.17/4357:
#0: ffff88807b6720e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x201/0x950 fs/super.c:229
3 locks held by syz.1.200/4573:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106
nmi_cpu_backtrace+0x397/0x3d0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x163/0x280 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xe0f/0xe50 kernel/hung_task.c:369
kthread+0x436/0x520 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4573 Comm: syz.1.200 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:put_dec_trunc8+0x4d/0x340 lib/vsprintf.c:229
Code: 89 ee e8 26 c8 79 fd 83 fd 63 77 0a e8 bc c4 79 fd e9 86 01 00 00 89 e8 4c 69 f0 29 5c 8f 02 49 c1 ee 20 45 6b fe 9c 41 01 ef 64 00 00 00 44 89 fe e8 f6 c7 79 fd 41 83 ff 63 0f 87 dd 01 00
RSP: 0018:ffffc900039f6e08 EFLAGS: 00000007
RAX: 00000000000000e3 RBX: ffffc900039f6ec0 RCX: ffff888025993b80
RDX: 0000000000000000 RSI: 00000000000000e3 RDI: 0000000000000064
RBP: 00000000000000e3 R08: dffffc0000000000 R09: ffffc900039f6ec0
R10: fffff5200073eddb R11: 1ffff9200073edd8 R12: dffffc0000000000
R13: 00000000000000e3 R14: 0000000000000002 R15: 000000000000001b
FS: 0000555585076500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5115fba000 CR3: 000000001f30c000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
number+0x306/0xf70 lib/vsprintf.c:507
vsnprintf+0x10fe/0x1a00 lib/vsprintf.c:2877
sprintf+0xd6/0x120 lib/vsprintf.c:3013
print_time kernel/printk/printk.c:1274 [inline]
info_print_prefix+0x152/0x300 kernel/printk/printk.c:1300
record_print_text kernel/printk/printk.c:1349 [inline]
console_unlock+0x7f5/0x1200 kernel/printk/printk.c:2725
vprintk_emit+0xc0/0x150 kernel/printk/printk.c:2274
_printk+0xcc/0x110 kernel/printk/printk.c:2299
show_trace_log_lvl+0x4d0/0x550 arch/x86/kernel/dumpstack.c:284
dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106
sysfs_warn_dup fs/sysfs/dir.c:30 [inline]
sysfs_create_dir_ns+0x252/0x280 fs/sysfs/dir.c:64
create_dir lib/kobject.c:89 [inline]
kobject_add_internal+0x662/0xd00 lib/kobject.c:263
kobject_add_varg lib/kobject.c:398 [inline]
kobject_init_and_add+0x122/0x190 lib/kobject.c:481
gfs2_sys_fs_add+0x234/0x480 fs/gfs2/sys.c:727
gfs2_fill_super+0x128d/0x1f50 fs/gfs2/ops_fstype.c:1202
get_tree_bdev+0x3f1/0x610 fs/super.c:1325
gfs2_get_tree+0x4d/0x1e0 fs/gfs2/ops_fstype.c:1332
vfs_get_tree+0x88/0x270 fs/super.c:1530
do_new_mount+0x24a/0xa40 fs/namespace.c:3014
do_mount fs/namespace.c:3357 [inline]
__do_sys_mount fs/namespace.c:3565 [inline]
__se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3542
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f016223b38a
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:00007ffd26b16d28 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffd26b16db0 RCX: 00007f016223b38a
RDX: 0000200000000400 RSI: 0000200000012500 RDI: 00007ffd26b16d70
RBP: 0000200000000400 R08: 00007ffd26b16db0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
R13: 00007ffd26b16d70 R14: 00000000000125e1 R15: 00002000000000c0