INFO: task syz-executor.3:8871 blocked for more than 143 seconds.
Not tainted 5.15.158-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D
stack:20568 pid: 8871 ppid: 1 flags:0x00004006
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
wb_wait_for_completion+0x164/0x290 fs/fs-writeback.c:191
sync_inodes_sb+0x293/0xab0 fs/fs-writeback.c:2770
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:1414
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: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: 0033:0x7ff3ff02afd7
RSP: 002b:00007ffe178ec848 EFLAGS: 00000246
ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007ff3ff02afd7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe178ec900
RBP: 00007ffe178ec900 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffe178ed9c0
R13: 00007ff3ff0743b9 R14: 0000000000058dee R15: 0000000000000006
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0:
ffffffff8c91fae0
(
rcu_read_lock
){....}-{1:2}
, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3257:
#0:
ffff88802453f098
(
&tty->ldisc_sem
){++++}-{0:0}
, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1:
ffffc90002bab2e8
(
&ldata->atomic_read_lock
){+.+.}-{3:3}
, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158
4 locks held by kworker/u4:5/3595:
#0:
ffff888015394938
(
(wq_completion)writeback
){+.+.}-{0:0}
, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc90002e67d20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
#2:
ffff888056b6c650
(
sb_internal
#3
){.+.+}-{0:0}
, at: xfs_bmapi_convert_delalloc+0x20f/0x1180 fs/xfs/libxfs/xfs_bmap.c:4573
#3:
ffff88805d32dae8
(
&xfs_nondir_ilock_class
){++++}-{3:3}
, at: xfs_bmapi_convert_delalloc+0x23c/0x1180 fs/xfs/libxfs/xfs_bmap.c:4578
2 locks held by syz-executor.3/8871:
#0:
ffff888056b6c0e0
(
&type->s_umount_key
#80
){+.+.}-{3:3}
, at: deactivate_super+0xa9/0xe0 fs/super.c:365
#1:
ffff88801b5967d8
(
&bdi->wb_switch_rwsem
){+.+.}-{3:3}
, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:362 [inline]
, at: sync_inodes_sb+0x274/0xab0 fs/fs-writeback.c:2768
5 locks held by kworker/1:21/10635:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.158-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
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:210 [inline]
watchdog+0xe72/0xeb0 kernel/hung_task.c:295
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 12051 Comm: kworker/1:22 Not tainted 5.15.158-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: xfs-buf/loop3 xfs_buf_ioend_work
RIP: 0010:__list_add_valid+0x1e/0xe0
Code: 06 cc cc cc cc cc cc cc cc cc cc cc 41 57 41 56 41 55 41 54 53 48 85 f6 0f 84 8a 00 00 00 49 89 d6 48 85 d2 0f 84 8c 00 00 00 <49> 89 f4 49 89 ff 49 bd 00 00 00 00 00 fc ff df 49 8d 5e 08 48 89
RSP: 0018:ffffc90000dd0630 EFLAGS: 00000086
RAX: dffffc0000000000 RBX: ffff8880169ada28 RCX: 1ffff110173475cc
RDX: ffff8880169ada28 RSI: ffff8880b9a3ae60 RDI: ffff88801dd2bc68
RBP: ffffc90000dd0cf0 R08: ffffffff81550027 R09: ffffed1003a70541
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90000dd0c18
R13: ffffc90000dd0c58 R14: ffff8880169ada28 R15: ffff8880b9a3ae60
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c000858000 CR3: 00000000237d4000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__list_add include/linux/list.h:67 [inline]
list_add include/linux/list.h:86 [inline]
list_move include/linux/list.h:216 [inline]
detach_tasks kernel/sched/fair.c:8268 [inline]
load_balance+0x4e14/0x7c60 kernel/sched/fair.c:10237
rebalance_domains+0x536/0xab0 kernel/sched/fair.c:10617
__do_softirq+0x3b3/0x93a kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x155/0x240 kernel/softirq.c:637
irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096
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 54 12 1a 00 fb 31 db eb 48 e8 4a 12 1a 00 e8 35 83 b7 08 4d 85 ed 74 cd e8 3b 12 1a 00 fb bb 01 00 00 00 <48> c7 c7 a0 c3 7f 8c 31 f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00
RSP: 0018:ffffc900031677c0 EFLAGS: 00000293
RAX: ffffffff81664a85 RBX: 0000000000000001 RCX: ffff8880245ed940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003167890 R08: ffffffff81664a3e R09: fffffbfff1f7ee4b
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200062cef8
R13: 0000000000000200 R14: 0000000000000046 R15: dffffc0000000000
vprintk_emit+0xa6/0x150 kernel/printk/printk.c:2273
_printk+0xd1/0x120 kernel/printk/printk.c:2299
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:418
xfs_allocbt_read_verify+0x52/0xc0
xfs_buf_ioend+0x26a/0x6e0 fs/xfs/xfs_buf.c:1263
process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300