INFO: task syz-executor252:9561 can't die for more than 143 seconds.
task:syz-executor252 state:D stack:26648 pid: 9561 ppid: 3629 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5043 [inline]
__schedule+0xa94/0x4910 kernel/sched/core.c:6352
schedule+0xd2/0x1f0 kernel/sched/core.c:6424
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x2af/0x360 kernel/sched/completion.c:106
kthread_stop+0x17a/0x720 kernel/kthread.c:708
ext4_stop_mmpd+0x47/0xd0 fs/ext4/mmp.c:255
__ext4_fill_super fs/ext4/super.c:5518 [inline]
ext4_fill_super+0x9b5e/0xe820 fs/ext4/super.c:5567
get_tree_bdev+0x440/0x760 fs/super.c:1292
vfs_get_tree+0x89/0x2f0 fs/super.c:1497
do_new_mount fs/namespace.c:3025 [inline]
path_mount+0x1320/0x1fa0 fs/namespace.c:3355
do_mount fs/namespace.c:3368 [inline]
__do_sys_mount fs/namespace.c:3576 [inline]
__se_sys_mount fs/namespace.c:3553 [inline]
__x64_sys_mount+0x27f/0x300 fs/namespace.c:3553
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f406a7688aa
RSP: 002b:00007ffffccb3b18 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffffccb3b70 RCX: 00007f406a7688aa
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffffccb3b30
RBP: 00007ffffccb3b30 R08: 00007ffffccb3b70 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00000000200003f8
R13: 0000000000000003 R14: 0000000000000004 R15: 0000000000000005
INFO: task syz-executor252:9561 blocked for more than 143 seconds.
Not tainted 5.17.0-rc6-next-20220303-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor252 state:D stack:26648 pid: 9561 ppid: 3629 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5043 [inline]
__schedule+0xa94/0x4910 kernel/sched/core.c:6352
schedule+0xd2/0x1f0 kernel/sched/core.c:6424
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x2af/0x360 kernel/sched/completion.c:106
kthread_stop+0x17a/0x720 kernel/kthread.c:708
ext4_stop_mmpd+0x47/0xd0 fs/ext4/mmp.c:255
__ext4_fill_super fs/ext4/super.c:5518 [inline]
ext4_fill_super+0x9b5e/0xe820 fs/ext4/super.c:5567
get_tree_bdev+0x440/0x760 fs/super.c:1292
vfs_get_tree+0x89/0x2f0 fs/super.c:1497
do_new_mount fs/namespace.c:3025 [inline]
path_mount+0x1320/0x1fa0 fs/namespace.c:3355
do_mount fs/namespace.c:3368 [inline]
__do_sys_mount fs/namespace.c:3576 [inline]
__se_sys_mount fs/namespace.c:3553 [inline]
__x64_sys_mount+0x27f/0x300 fs/namespace.c:3553
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f406a7688aa
RSP: 002b:00007ffffccb3b18 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffffccb3b70 RCX: 00007f406a7688aa
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffffccb3b30
RBP: 00007ffffccb3b30 R08: 00007ffffccb3b70 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00000000200003f8
R13: 0000000000000003 R14: 0000000000000004 R15: 0000000000000005
Showing all locks held in the system:
1 lock held by khungtaskd/28:
#0: ffffffff8bd858e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6498
2 locks held by getty/3276:
#0: ffff888011bb3098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002e562e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2075
1 lock held by syz-executor252/9561:
#0: ffff88807341a0e0 (&type->s_umount_key#28/1){+.+.}-{3:3}, at: alloc_super+0x1dd/0xa80 fs/super.c:228
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 5.17.0-rc6-next-20220303-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:256 [inline]
watchdog+0xcb7/0xed0 kernel/hung_task.c:413
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 986 Comm: kworker/u4:4 Not tainted 5.17.0-rc6-next-20220303-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:hlock_id kernel/locking/lockdep.c:430 [inline]
RIP: 0010:__lock_acquire+0xa17/0x56c0 kernel/locking/lockdep.c:5048
Code: 21 83 e3 60 0f 85 f5 0b 00 00 4c 89 f8 44 89 7c 24 50 48 c1 e8 20 89 c3 89 44 24 60 44 01 f8 c1 c3 04 89 44 24 40 89 5c 24 58 <48> b8 00 00 00 00 00 fc ff df 48 8b 54 24 38 48 c1 ea 03 0f b6 04
RSP: 0018:ffffc90004cb7748 EFLAGS: 00000003
RAX: 000000004de047dc RBX: 00000000e1de6301 RCX: ffffffff815d675c
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff88801cc4e311
RBP: ffff88801cc4e312 R08: 0000000000000000 R09: 0000000000000005
R10: fffffbfff2002b32 R11: 0000000000000001 R12: ffff88801cc4e2f0
R13: ffff88801cc4d7c0 R14: 0000000000000000 R15: 1e1de6302fc261ac
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055be32909038 CR3: 000000000ba8e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire kernel/locking/lockdep.c:5672 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5637
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:354 [inline]
__get_locked_pte+0x154/0x270 mm/memory.c:1752
get_locked_pte include/linux/mm.h:2128 [inline]
__text_poke+0x1ae/0x8c0 arch/x86/kernel/alternative.c:1000
text_poke arch/x86/kernel/alternative.c:1083 [inline]
text_poke_bp_batch+0x433/0x6b0 arch/x86/kernel/alternative.c:1398
text_poke_flush arch/x86/kernel/alternative.c:1504 [inline]
text_poke_flush arch/x86/kernel/alternative.c:1501 [inline]
text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1511
arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
jump_label_update+0x32f/0x410 kernel/jump_label.c:830
static_key_enable_cpuslocked+0x1b1/0x260 kernel/jump_label.c:177
static_key_enable+0x16/0x20 kernel/jump_label.c:190
toggle_allocation_gate mm/kfence/core.c:735 [inline]
toggle_allocation_gate+0x100/0x390 mm/kfence/core.c:727
process_one_work+0x996/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: 21 83 e3 60 0f 85 and %eax,-0x7af09f1d(%rbx)
6: f5 cmc
7: 0b 00 or (%rax),%eax
9: 00 4c 89 f8 add %cl,-0x8(%rcx,%rcx,4)
d: 44 89 7c 24 50 mov %r15d,0x50(%rsp)
12: 48 c1 e8 20 shr $0x20,%rax
16: 89 c3 mov %eax,%ebx
18: 89 44 24 60 mov %eax,0x60(%rsp)
1c: 44 01 f8 add %r15d,%eax
1f: c1 c3 04 rol $0x4,%ebx
22: 89 44 24 40 mov %eax,0x40(%rsp)
26: 89 5c 24 58 mov %ebx,0x58(%rsp)
* 2a: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax <-- trapping instruction
31: fc ff df
34: 48 8b 54 24 38 mov 0x38(%rsp),%rdx
39: 48 c1 ea 03 shr $0x3,%rdx
3d: 0f .byte 0xf
3e: b6 04 mov $0x4,%dh