INFO: task syz-executor.3:5788 blocked for more than 143 seconds.
Not tainted 5.15.98-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D
stack:20896 pid: 5788 ppid: 1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5023 [inline]
__schedule+0x132d/0x45e0 kernel/sched/core.c:6369
schedule+0x11b/0x1f0 kernel/sched/core.c:6452
wb_wait_for_completion+0x164/0x290 fs/fs-writeback.c:191
sync_inodes_sb+0x2af/0xa70 fs/fs-writeback.c:2745
sync_filesystem+0x16b/0x220 fs/sync.c:64
generic_shutdown_super+0x6e/0x2c0 fs/super.c:448
kill_block_super+0x7a/0xe0 fs/super.c:1396
deactivate_locked_super+0xa0/0x110 fs/super.c:335
cleanup_mnt+0x44e/0x500 fs/namespace.c:1143
task_work_run+0x129/0x1a0 kernel/task_work.c:164
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:175
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x5d/0x2a0 kernel/entry/common.c:300
do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fecfbb31567
RSP: 002b:00007ffd1831b0c8 EFLAGS: 00000246
ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fecfbb31567
RDX: 00007ffd1831b19b RSI: 000000000000000a RDI: 00007ffd1831b190
RBP: 00007ffd1831b190 R08: 00000000ffffffff R09: 00007ffd1831af60
R10: 0000555556a708b3 R11: 0000000000000246 R12: 00007fecfbb8ab24
R13: 00007ffd1831c250 R14: 0000555556a70810 R15: 00007ffd1831c290
INFO: task syz-executor.4:5794 blocked for more than 144 seconds.
Not tainted 5.15.98-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D
stack:20896 pid: 5794 ppid: 1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5023 [inline]
__schedule+0x132d/0x45e0 kernel/sched/core.c:6369
schedule+0x11b/0x1f0 kernel/sched/core.c:6452
wb_wait_for_completion+0x164/0x290 fs/fs-writeback.c:191
sync_inodes_sb+0x2af/0xa70 fs/fs-writeback.c:2745
sync_filesystem+0x16b/0x220 fs/sync.c:64
generic_shutdown_super+0x6e/0x2c0 fs/super.c:448
kill_block_super+0x7a/0xe0 fs/super.c:1396
deactivate_locked_super+0xa0/0x110 fs/super.c:335
cleanup_mnt+0x44e/0x500 fs/namespace.c:1143
task_work_run+0x129/0x1a0 kernel/task_work.c:164
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:175
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x5d/0x2a0 kernel/entry/common.c:300
do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f3d6760d567
RSP: 002b:00007fff23d50678 EFLAGS: 00000246
ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f3d6760d567
RDX: 00007fff23d5074b RSI: 000000000000000a RDI: 00007fff23d50740
RBP: 00007fff23d50740 R08: 00000000ffffffff R09: 00007fff23d50510
R10: 0000555555d4e8b3 R11: 0000000000000246 R12: 00007f3d67666b24
R13: 00007fff23d51800 R14: 0000555555d4e810 R15: 00007fff23d51840
INFO: task syz-executor.0:5802 blocked for more than 145 seconds.
Not tainted 5.15.98-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D
stack:20896 pid: 5802 ppid: 5785 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5023 [inline]
__schedule+0x132d/0x45e0 kernel/sched/core.c:6369
schedule+0x11b/0x1f0 kernel/sched/core.c:6452
wb_wait_for_completion+0x164/0x290 fs/fs-writeback.c:191
sync_inodes_sb+0x2af/0xa70 fs/fs-writeback.c:2745
sync_filesystem+0x16b/0x220 fs/sync.c:64
generic_shutdown_super+0x6e/0x2c0 fs/super.c:448
kill_block_super+0x7a/0xe0 fs/super.c:1396
deactivate_locked_super+0xa0/0x110 fs/super.c:335
cleanup_mnt+0x44e/0x500 fs/namespace.c:1143
task_work_run+0x129/0x1a0 kernel/task_work.c:164
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:175
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x5d/0x2a0 kernel/entry/common.c:300
do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f3e24fcc567
RSP: 002b:00007ffddc68a9f8 EFLAGS: 00000246
ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f3e24fcc567
RDX: 00007ffddc68aacb RSI: 000000000000000a RDI: 00007ffddc68aac0
RBP: 00007ffddc68aac0 R08: 00000000ffffffff R09: 00007ffddc68a890
R10: 0000555555fb08b3 R11: 0000000000000246 R12: 00007f3e25025b24
R13: 00007ffddc68bb80 R14: 0000555555fb0810 R15: 00007ffddc68bbc0
Showing all locks held in the system:
1 lock held by khungtaskd/26:
#0:
ffffffff8c91c660
(
rcu_read_lock
){....}-{1:2}
, at: rcu_lock_acquire+0x0/0x30
4 locks held by kworker/u4:3/932:
#0:
ffff88814318c938
(
(wq_completion)writeback
){+.+.}-{0:0}
, at: process_one_work+0x78a/0x1230 kernel/workqueue.c:2279
#1:
ffffc90004fafd20
(
(work_completion)(&(&wb->dwork)->work)
){+.+.}-{0:0}
, at: process_one_work+0x7cd/0x1230 kernel/workqueue.c:2281
#2:
ffff88807bcc8650
(sb_internal#3){.+.+}-{0:0}
, at: xfs_bmapi_convert_delalloc+0x20f/0x1180 fs/xfs/libxfs/xfs_bmap.c:4573
#3:
ffff88804c1380e8
(
&xfs_nondir_ilock_class
){++++}-{3:3}
, at: xfs_bmapi_convert_delalloc+0x23c/0x1180 fs/xfs/libxfs/xfs_bmap.c:4578
2 locks held by getty/3270:
#0:
ffff88814ad31098
(
&tty->ldisc_sem
){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1:
ffffc900025132e8
(
&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1da0 drivers/tty/n_tty.c:2147
2 locks held by kworker/1:10/3699:
2 locks held by syz-executor.3/5788:
#0: ffff88807801c0e0 (&type->s_umount_key#108){+.+.}-{3:3}, at: deactivate_super+0xa9/0xe0 fs/super.c:365
#1: ffff88801c6967d8
(&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:362 [inline]
(&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x290/0xa70 fs/fs-writeback.c:2743
2 locks held by syz-executor.4/5794:
#0: ffff8880759900e0 (&type->s_umount_key#108){+.+.}-{3:3}, at: deactivate_super+0xa9/0xe0 fs/super.c:365
#1: ffff88801c6b47d8 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:362 [inline]
#1: ffff88801c6b47d8 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x290/0xa70 fs/fs-writeback.c:2743
2 locks held by syz-executor.0/5802:
#0: ffff88807bcc80e0 (&type->s_umount_key#108){+.+.}-{3:3}, at: deactivate_super+0xa9/0xe0 fs/super.c:365
#1:
ffff88801c5347d8
(
&bdi->wb_switch_rwsem
){+.+.}-{3:3}
, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:362 [inline]
, at: sync_inodes_sb+0x290/0xa70 fs/fs-writeback.c:2743
4 locks held by kworker/u4:14/6123:
#0:
ffff88814318c938
(
(wq_completion)writeback
){+.+.}-{0:0}
, at: process_one_work+0x78a/0x1230 kernel/workqueue.c:2279
#1:
ffffc9000303fd20
(
(work_completion)(&(&wb->dwork)->work)
){+.+.}-{0:0}
, at: process_one_work+0x7cd/0x1230 kernel/workqueue.c:2281
#2:
ffff888075990650
(
sb_internal
#3
){.+.+}-{0:0}
, at: raw_spin_rq_lock_nested+0x26/0x140 kernel/sched/core.c:475
#3:
ffff888042211768
(
&xfs_nondir_ilock_class
){++++}-{3:3}
, at: xfs_bmapi_convert_delalloc+0x23c/0x1180 fs/xfs/libxfs/xfs_bmap.c:4578
4 locks held by kworker/u4:15/6125:
#0:
ffff88814318c938
(
(wq_completion)writeback
){+.+.}-{0:0}
, at: process_one_work+0x78a/0x1230 kernel/workqueue.c:2279
#1:
ffffc9000155fd20
(
(work_completion)(&(&wb->dwork)->work)
){+.+.}-{0:0}
, at: process_one_work+0x7cd/0x1230 kernel/workqueue.c:2281
#2:
ffff88807801c650
(
sb_internal
#3
){.+.+}-{0:0}
, at: xfs_bmapi_convert_delalloc+0x20f/0x1180 fs/xfs/libxfs/xfs_bmap.c:4573
#3:
ffff888042213568
(
&xfs_nondir_ilock_class
){++++}-{3:3}
, at: xfs_bmapi_convert_delalloc+0x23c/0x1180 fs/xfs/libxfs/xfs_bmap.c:4578
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 26 Comm: khungtaskd Not tainted 5.15.98-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb 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:210 [inline]
watchdog+0xec6/0xf10 kernel/hung_task.c:295
kthread+0x3f6/0x4f0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 :298
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 10183 Comm: kworker/0:11 Not tainted 5.15.98-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Workqueue: xfs-buf/loop4 xfs_buf_ioend_work
RIP: 0010:__lock_acquire+0x1a0/0x1ff0 kernel/locking/lockdep.c:4921
Code: 84 31 01 00 00 49 8d 9d 20 0a 00 00 83 fd 30 0f 87 88 1b 00 00 48 8d 44 ad 00 48 8d 5c c3 f8 48 89 d8 48 c1 e8 03 0f b6 04 10 <84> c0 0f 85 8b 16 00 00 48 89 e8 48 83 bc 24 c0 00 00 00 00 0f 84
RSP: 0018:ffffc900000078c0 EFLAGS: 00000802
RAX: 0000000000000000 RBX: ffff888021310ab8 RCX: ffffffff912bbf03
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff888011c69818
RBP: 0000000000000004 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001
R13: ffff888021310000 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9b7d7fbc40 CR3: 0000000023c21000 CR4: 00000000003506f0
Call Trace:
lock_acquire+0x1f6/0x560 kernel/locking/lockdep.c:5622
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
__queue_work+0x549/0xd80
call_timer_fn+0x1bc/0x6b0 kernel/time/timer.c:1421
expire_timers kernel/time/timer.c:1461 [inline]
__run_timers+0x6a8/0x890 kernel/time/timer.c:1737
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1750
__do_softirq+0x3d1/0x9fe kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x155/0x240 kernel/softirq.c:636
irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:console_trylock_spinning+0x36b/0x3f0 kernel/printk/printk.c:1909
Code: 0f 84 75 ff ff ff e8 84 03 1a 00 fb 31 db eb 41 e8 7a 03 1a 00 e8 c5 87 b4 08 4d 85 ed 74 cd e8 6b 03 1a 00 fb bb 01 00 00 00 <48> c7 c7 a0 8d 7f 8c 31 f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00
RSP: 0018:ffffc90005a9f7c0 EFLAGS: 00000293
RAX: ffffffff81665125 RBX: 0000000000000001 RCX: ffff888021310000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90005a9f890 R08: ffffffff816650de R09: fffffbfff1f58851
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000b53ef8
R13: 0000000000000200 R14: 0000000000000046 R15: dffffc0000000000
vprintk_emit+0xa1/0x150 kernel/printk/printk.c:2267
_printk+0xd1/0x111 kernel/printk/printk.c:2289
print_hex_dump+0x1a2/0x250 lib/hexdump.c:285
xfs_hex_dump+0x39/0x50 fs/xfs/xfs_message.c:118
xfs_buf_verifier_error+0x1bc/0x290 fs/xfs/xfs_error.c:413
xfs_allocbt_read_verify+0x52/0xc0
xfs_buf_ioend+0x30c/0x7c0 fs/xfs/xfs_buf.c:1263
process_one_work+0x8e6/0x1230 kernel/workqueue.c:2306
worker_thread+0xaca/0x1280 kernel/workqueue.c:2453
kthread+0x3f6/0x4f0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 :298