INFO: task syz-executor:5084 blocked for more than 147 seconds.
Not tainted 6.1.114-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:19480 pid:5084 ppid:1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5241 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6558
schedule+0xbf/0x180 kernel/sched/core.c:6634
wb_wait_for_completion+0x162/0x290 fs/fs-writeback.c:191
sync_inodes_sb+0x28f/0xb10 fs/fs-writeback.c:2739
sync_filesystem+0x16b/0x220 fs/sync.c:64
generic_shutdown_super+0x6b/0x340 fs/super.c:474
kill_block_super+0x7a/0xe0 fs/super.c:1470
deactivate_locked_super+0xa0/0x110 fs/super.c:332
cleanup_mnt+0x490/0x520 fs/namespace.c:1186
task_work_run+0x246/0x300 kernel/task_work.c:203
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:177
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f9f4c77fa47
RSP: 002b:00007fff8bc400a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f9f4c7f11cc RCX: 00007f9f4c77fa47
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff8bc40160
RBP: 00007fff8bc40160 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fff8bc411e0
R13: 00007f9f4c7f11cc R14: 000000000004300e R15: 00007fff8bc41220
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d32b1d0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:517
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d32b9d0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:517
1 lock held by khungtaskd/28:
#0: ffffffff8d32b000 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
#0: ffffffff8d32b000 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline]
#0: ffffffff8d32b000 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6510
4 locks held by kworker/u4:2/33:
2 locks held by getty/4011:
#0:
ffff88823bd26098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900032462f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a7/0x1db0 drivers/tty/n_tty.c:2198
4 locks held by kworker/u4:7/4347:
2 locks held by syz-executor/5084:
#0: ffff888058a320e0 (&type->s_umount_key#52){+.+.}-{3:3}, at: deactivate_super+0xa9/0xe0 fs/super.c:362
#1: ffff8881443167d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:362 [inline]
#1: ffff8881443167d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x270/0xb10 fs/fs-writeback.c:2737
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.1.114-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x4e1/0x560 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1ae/0x3f0 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+0xf88/0xfd0 kernel/hung_task.c:377
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4347 Comm: kworker/u4:7 Not tainted 6.1.114-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: writeback wb_workfn (flush-7:7)
RIP: 0010:psi_group_change+0x808/0x1400 kernel/sched/psi.c:842
Code: 8d 4c 89 f6 e8 b9 4d fc 02 44 89 ef 48 8b 34 24 48 ba 00 00 00 00 00 fc ff df e9 2d ff ff ff 49 8d 5f 08 48 89 d8 48 c1 e8 03 <0f> b6 04 10 84 c0 0f 85 e7 05 00 00 80 3b 00 0f 84 95 04 00 00 4c
RSP: 0018:ffffc900001e0a68 EFLAGS: 00000806
RAX: 1ffffffff1a3e621 RBX: ffffffff8d1f3108 RCX: 0000000000000002
RDX: dffffc0000000000 RSI: ffff8880b8f27780 RDI: 0000000000000100
RBP: 00000000fffffffb R08: ffffffff90145040 R09: ffffffff90145048
R10: ffffffff90145058 R11: ffffffff90145050 R12: 0000000000000000
R13: 0000000000000004 R14: ffff8880b8f277b8 R15: ffffffff8d1f3100
FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562dd451d018 CR3: 000000001ff26000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
psi_task_change+0xe9/0x260 kernel/sched/psi.c:924
psi_enqueue kernel/sched/stats.h:145 [inline]
enqueue_task+0x2fd/0x3a0 kernel/sched/core.c:2052
activate_task kernel/sched/core.c:2084 [inline]
ttwu_do_activate+0x1b4/0x370 kernel/sched/core.c:3696
ttwu_queue kernel/sched/core.c:3901 [inline]
try_to_wake_up+0x76b/0x12e0 kernel/sched/core.c:4224
hrtimer_wakeup+0x5e/0x70 kernel/time/hrtimer.c:1943
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x5e5/0xe50 kernel/time/hrtimer.c:1753
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1815
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
__sysvec_apic_timer_interrupt+0x158/0x5b0 arch/x86/kernel/apic/apic.c:1124
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1118
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:console_trylock_spinning kernel/printk/printk.c:1948 [inline]
RIP: 0010:vprintk_emit+0x4fa/0x740 kernel/printk/printk.c:2302
Code: 21 e3 0f 85 ad 01 00 00 e8 13 64 1c 00 44 8b 24 24 4d 85 ff 75 07 e8 05 64 1c 00 eb 06 e8 fe 63 1c 00 fb 48 c7 c7 20 72 20 8d <31> f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00 45 31 c9 41 56 e8 ed
RSP: 0018:ffffc9000449e380 EFLAGS: 00000293
RAX: ffffffff816e2f62 RBX: 0000000000000000 RCX: ffff888027f7d940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8d207220
RBP: ffffc9000449e470 R08: ffffffff816e2f3f R09: fffffbfff224606f
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000087
R13: dffffc0000000000 R14: ffffffff816e2db0 R15: 0000000000000200
_printk+0xd1/0x111 kernel/printk/printk.c:2328
_udf_err+0x137/0x180 fs/udf/super.c:2353
udf_bitmap_new_block fs/udf/balloc.c:357 [inline]
udf_new_block+0x1bb4/0x2130 fs/udf/balloc.c:730
inode_getblk fs/udf/inode.c:769 [inline]
udf_get_block+0x1a69/0x5360 fs/udf/inode.c:359
__mpage_writepage+0x40d/0x1930 fs/mpage.c:533
write_cache_pages+0x92e/0x15c0 mm/page-writeback.c:2382
mpage_writepages+0x103/0x1d0 fs/mpage.c:664
do_writepages+0x3a2/0x670 mm/page-writeback.c:2491
__writeback_single_inode+0x15d/0x11e0 fs/fs-writeback.c:1612
writeback_sb_inodes+0xc2b/0x1b20 fs/fs-writeback.c:1903
wb_writeback+0x49d/0xe10 fs/fs-writeback.c:2077
wb_do_writeback fs/fs-writeback.c:2220 [inline]
wb_workfn+0x427/0x1020 fs/fs-writeback.c:2260
process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295