INFO: task syz-executor.0:2834 blocked for more than 143 seconds.
Not tainted 6.4.0-rc4-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:11416 pid:2834 ppid:1 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x6d5/0x13f0 kernel/sched/core.c:6669
schedule+0x68/0xc0 kernel/sched/core.c:6745
io_schedule+0x3e/0x60 kernel/sched/core.c:8979
folio_wait_bit_common+0x200/0x4b0 mm/filemap.c:1301
folio_lock include/linux/pagemap.h:955 [inline]
truncate_inode_pages_range+0x4eb/0x680 mm/truncate.c:422
evict+0xe1/0x2a0 fs/inode.c:667
dispose_list fs/inode.c:698 [inline]
evict_inodes+0x183/0x1e0 fs/inode.c:748
generic_shutdown_super+0x3a/0x150 fs/super.c:479
kill_block_super+0x28/0x40 fs/super.c:1407
deactivate_locked_super+0x2f/0x90 fs/super.c:331
cleanup_mnt+0xe2/0x120 fs/namespace.c:1177
task_work_run+0x83/0xb0 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xa4/0xc0 kernel/entry/common.c:171
exit_to_user_mode_prepare+0x64/0xb0 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
syscall_exit_to_user_mode+0x2c/0x1e0 kernel/entry/common.c:297
do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x73/0xdd
RIP: 0033:0x7fd7d8a7f0d7
RSP: 002b:00007ffe6cededb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fd7d8a7f0d7
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffe6cedee70
RBP: 00007ffe6cedee70 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffe6cedff30
R13: 00007fd7d8ac93b9 R14: 000000000000ad67 R15: 0000000000000002
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff83fda168 (rcu_tasks.tasks_gp_mutex){....}-{3:3}, at: rcu_tasks_one_gp kernel/rcu/tasks.h:518 [inline]
#0: ffffffff83fda168 (rcu_tasks.tasks_gp_mutex){....}-{3:3}, at: rcu_tasks_kthread+0x9c/0x460 kernel/rcu/tasks.h:563
1 lock held by khungtaskd/27:
#0: ffffffff83fda040 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 include/trace/events/initcall.h:48
2 locks held by getty/2265:
#0: ffff88810377b098 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x20/0x40 drivers/tty/tty_ldisc.c:243
#1: ffffc90000bfb2f0 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x20e/0x8e0 drivers/tty/n_tty.c:2176
1 lock held by syz-executor.0/2834:
#0: ffff8881027410e0 (&type->s_umount_key#47){....}-{3:3}, at: deactivate_super+0x2f/0x40 fs/super.c:361
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 6.4.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x83/0xd0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x146/0x160 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x8b/0x140 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0x4f4/0x520 kernel/hung_task.c:379
kthread+0xeb/0x100 kernel/kthread.c:379
ret_from_fork+0x2c/0x50 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 10 Comm: kworker/u4:0 Not tainted 6.4.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:__default_send_IPI_dest_field+0x3e/0x60 arch/x86/kernel/apic/ipi.c:173
Code: 5f ff 00 10 00 00 74 0f f3 90 f7 04 25 00 c3 5f ff 00 10 00 00 75 f1 c1 e5 18 89 2c 25 10 c3 5f ff 09 de 89 34 25 00 c3 5f ff <5b> 5d e9 5b 88 c3 01 48 8b 05 f4 ca aa 02 4c 8b 58 28 e8 4b 83 c3
RSP: 0018:ffffc900000a3c30 EFLAGS: 00000002
RAX: ee37212045998400 RBX: 0000000000000800 RCX: ffff888102640000
RDX: 0000000000000800 RSI: 00000000000008fb RDI: 0000000000000002
RBP: 0000000002000000 R08: 0000000000000000 R09: 0005800000000000
R10: 0000000000000000 R11: ffffffff81068cf0 R12: 0000000000000001
R13: 0000000000000002 R14: 0000000000000000 R15: ffff88813bc2ea40
FS: 0000000000000000(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5a6b8ab200 CR3: 0000000003ea8000 CR4: 0000000000350ef0
Call Trace:
_flat_send_IPI_mask arch/x86/kernel/apic/apic_flat_64.c:56 [inline]
flat_send_IPI_mask+0x34/0x80 arch/x86/kernel/apic/apic_flat_64.c:64
arch_send_call_function_single_ipi arch/x86/include/asm/smp.h:109 [inline]
send_call_function_single_ipi kernel/smp.c:112 [inline]
smp_call_function_many_cond+0x51f/0x9d0 kernel/smp.c:810
on_each_cpu_cond_mask+0x3a/0x70 kernel/smp.c:996
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:1770 [inline]
text_poke_bp_batch+0x217/0x300 arch/x86/kernel/alternative.c:2032
text_poke_flush arch/x86/kernel/alternative.c:2161 [inline]
text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:2168
arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:146
static_key_disable_cpuslocked kernel/jump_label.c:235 [inline]
static_key_disable+0x3f/0x60 kernel/jump_label.c:243
toggle_allocation_gate+0xe2/0x130 mm/kfence/core.c:836
process_one_work+0x247/0x490 kernel/workqueue.c:2405
worker_thread+0x218/0x370 kernel/workqueue.c:2552
kthread+0xeb/0x100 kernel/kthread.c:379
ret_from_fork+0x2c/0x50 arch/x86/entry/entry_64.S:308