INFO: task syz.3.232:6220 blocked for more than 143 seconds.
Not tainted 5.15.180-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.232 state:D stack:23712 pid: 6220 ppid: 4908 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
schedule+0x11b/0x1f0 kernel/sched/core.c:6459
schedule_timeout+0xac/0x300 kernel/time/timer.c:1890
do_wait_for_common+0x2d9/0x480 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+0x48/0x60 kernel/sched/completion.c:138
kthread_stop+0x178/0x580 kernel/kthread.c:666
gfs2_make_fs_ro+0x14d/0x5f0 fs/gfs2/super.c:533
signal_our_withdraw fs/gfs2/util.c:166 [inline]
gfs2_withdraw+0x5fb/0x14e0 fs/gfs2/util.c:343
gfs2_metatype_check_ii+0x75/0x90 fs/gfs2/util.c:520
gfs2_metatype_check_i fs/gfs2/util.h:129 [inline]
gfs2_quota_init+0xe06/0x1110 fs/gfs2/quota.c:1406
gfs2_make_fs_rw+0x436/0x5b0 fs/gfs2/super.c:155
gfs2_fill_super+0x23e8/0x2750 fs/gfs2/ops_fstype.c:1276
get_tree_bdev+0x3fe/0x620 fs/super.c:1325
gfs2_get_tree+0x50/0x210 fs/gfs2/ops_fstype.c:1332
vfs_get_tree+0x88/0x270 fs/super.c:1530
do_new_mount+0x2ba/0xb40 fs/namespace.c:3012
do_mount fs/namespace.c:3355 [inline]
__do_sys_mount fs/namespace.c:3563 [inline]
__se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3540
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f0b5205b90a
RSP: 002b:00007f0b512cae68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f0b512caef0 RCX: 00007f0b5205b90a
RDX: 0000200000000400 RSI: 0000200000012500 RDI: 00007f0b512caeb0
RBP: 0000200000000400 R08: 00007f0b512caef0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000012500
R13: 00007f0b512caeb0 R14: 00000000000125bb R15: 00002000000004c0
INFO: task gfs2_quotad:6228 blocked for more than 144 seconds.
Not tainted 5.15.180-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:gfs2_quotad state:D
stack:25944 pid: 6228 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
schedule+0x11b/0x1f0 kernel/sched/core.c:6459
bit_wait+0xe/0xc0 kernel/sched/wait_bit.c:199
__wait_on_bit+0xb9/0x180 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x1d0/0x250 kernel/sched/wait_bit.c:64
wait_on_bit include/linux/wait_bit.h:76 [inline]
__gfs2_glock_dq+0x699/0x9e0 fs/gfs2/glock.c:1588
gfs2_glock_dq fs/gfs2/glock.c:1652 [inline]
gfs2_glock_dq_uninit+0x51/0x110 fs/gfs2/glock.c:1672
gfs2_statfs_sync+0x7d5/0x860 fs/gfs2/super.c:310
quotad_check_timeo fs/gfs2/quota.c:1519 [inline]
gfs2_quotad+0x3a8/0x900 fs/gfs2/quota.c:1581
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8cb1f560
(
rcu_read_lock
){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3923:
#0: ffff88802c57c098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc90002cd62e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158
1 lock held by syz-executor/4900:
#0: ffff888147dc0468 (&lo->lo_mutex){+.+.}-{3:3}, at: __loop_clr_fd+0xa9/0xbe0 drivers/block/loop.c:1365
2 locks held by udevd/6062:
#0: ffff8880202ba118 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xfb/0x790 block/bdev.c:915
#1: ffff888147e1c468 (&lo->lo_mutex){+.+.}-{3:3}, at: __loop_clr_fd+0xa9/0xbe0 drivers/block/loop.c:1365
1 lock held by syz.3.232/6220:
#0: ffff888061a500e0 (&type->s_umount_key#53/1){+.+.}-{3:3}, at: alloc_super+0x210/0x940 fs/super.c:229
2 locks held by syz.2.515/6822:
#0: ffff8880202b7118 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xfb/0x790 block/bdev.c:915
#1: ffff888147dc6468 (&lo->lo_mutex){+.+.}-{3:3}, at: lo_release+0x4d/0x1f0 drivers/block/loop.c:2070
1 lock held by syz.1.516/6824:
#0: ffff888147dc3468 (&lo->lo_mutex){+.+.}-{3:3}, at: __loop_clr_fd+0xa9/0xbe0 drivers/block/loop.c:1365
2 locks held by syz.5.517/6826:
#0: ffff8880202bbd18 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xfb/0x790 block/bdev.c:915
#1: ffff888147e1f468 (&lo->lo_mutex){+.+.}-{3:3}, at: lo_release+0x4d/0x1f0 drivers/block/loop.c:2070
1 lock held by syz.4.518/6829:
#0: ffff8880202ba118 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x14d/0xa50 block/bdev.c:820
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.180-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x181/0x2a0 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+0xe72/0xeb0 kernel/hung_task.c:369
kthread+0x3f6/0x4f0 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: 6062 Comm: udevd Not tainted 5.15.180-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:xas_clear_mark+0x78/0x540 lib/xarray.c:924
Code: 0f 85 93 03 00 00 44 0f b6 33 4c 89 ee 48 83 e6 03 31 ff e8 fa 55 45 fd 4c 89 e8 48 83 e0 03 74 14 e8 0c 52 45 fd 48 83 c4 10 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 4d 85 ed 0f 84 2d 02 00 00 44 89
RSP: 0018:ffffc90003d2f5f8 EFLAGS: 00000082
RAX: ffffffff843b4e25 RBX: 0000000000000000 RCX: ffff88802becd940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff843b4c66 R09: ffffed100b065a58
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000002
R13: ffff88805832d080 R14: 0000000000000017 R15: ffffc90003d2f700
FS: 00007f7a18cc5c80(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055558933a608 CR3: 00000000713c0000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
xas_init_marks+0x84/0xd0 lib/xarray.c:946
page_cache_delete mm/filemap.c:143 [inline]
__delete_from_page_cache+0x67a/0x860 mm/filemap.c:232
delete_from_page_cache+0x126/0x190 mm/filemap.c:266
truncate_inode_page+0x8d/0xb0 mm/truncate.c:219
shmem_undo_range+0x535/0x1b50 mm/shmem.c:960
shmem_truncate_range mm/shmem.c:1063 [inline]
shmem_evict_inode+0x21b/0xa00 mm/shmem.c:1145
evict+0x529/0x930 fs/inode.c:647
__dentry_kill+0x436/0x650 fs/dcache.c:586
dentry_kill+0xbb/0x290 fs/dcache.c:-1
dput+0xd8/0x1a0 fs/dcache.c:893
__fput+0x636/0x8e0 fs/file_table.c:319
task_work_run+0x129/0x1a0 kernel/task_work.c:188
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:181
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
__syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f7a18df10a8
Code: 48 8b 05 83 9d 0d 00 64 c7 00 16 00 00 00 83 c8 ff 48 83 c4 20 5b c3 64 8b 04 25 18 00 00 00 85 c0 75 20 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 5b 48 8b 15 51 9d 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffdb59ec2e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 00007f7a18cc5ae0 RCX: 00007f7a18df10a8
RDX: 000055938547d7cd RSI: 00007ffdb59ebae8 RDI: 0000000000000008
RBP: 00005596dc297ac0 R08: 0000000000000006 R09: 247492e42cfcfc09
R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000002
R13: 00005596dc291b90 R14: 0000000000000008 R15: 00005596dc274910