INFO: task syz-executor426:12148 blocked for more than 143 seconds.
Not tainted 5.17.0-rc5-syzkaller-00006-g917bbdb107f8 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor426 state:D stack:24592 pid:12148 ppid: 3635 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:4995 [inline]
__schedule+0x926/0x1080 kernel/sched/core.c:6304
schedule+0x12b/0x1f0 kernel/sched/core.c:6377
schedule_timeout+0xac/0x300 kernel/time/timer.c:1857
do_wait_for_common+0x2da/0x480 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x46/0x60 kernel/sched/completion.c:138
kthread_stop+0xf8/0x200 kernel/kthread.c:709
ext4_stop_mmpd+0x43/0xb0 fs/ext4/mmp.c:255
__ext4_fill_super+0x9b13/0xf6f0 fs/ext4/super.c:5505
ext4_fill_super+0x30d/0x6f0 fs/ext4/super.c:5554
get_tree_bdev+0x406/0x630 fs/super.c:1292
vfs_get_tree+0x86/0x270 fs/super.c:1497
do_new_mount fs/namespace.c:3024 [inline]
path_mount+0x1986/0x2c30 fs/namespace.c:3354
do_mount fs/namespace.c:3367 [inline]
__do_sys_mount fs/namespace.c:3575 [inline]
__se_sys_mount+0x308/0x3c0 fs/namespace.c:3552
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fd82921dcba
RSP: 002b:00007ffe8b98b238 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe8b98b290 RCX: 00007fd82921dcba
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffe8b98b250
RBP: 00007ffe8b98b250 R08: 00007ffe8b98b290 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 00000000200003f8
R13: 0000000000000003 R14: 0000000000000004 R15: 0000000000000005
</TASK>
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8cb1d460 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3274:
#0: ffff88814a9c5098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc90002b662e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6c5/0x1c60 drivers/tty/n_tty.c:2075
1 lock held by syz-executor426/12148:
#0: ffff88801a8240e0 (&type->s_umount_key#27/1){+.+.}-{3:3}, at: alloc_super+0x1c8/0x820 fs/super.c:228
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.17.0-rc5-syzkaller-00006-g917bbdb107f8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1dc/0x2d8 lib/dump_stack.c:106
nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x16a/0x280 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xc82/0xcd0 kernel/hung_task.c:369
kthread+0x2a3/0x2d0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30
</TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 44 Comm: kworker/u4:2 Not tainted 5.17.0-rc5-syzkaller-00006-g917bbdb107f8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:kasan_check_range+0x2/0x2f0 mm/kasan/generic.c:188
Code: 48 89 c7 e8 30 26 4b 08 31 c0 c3 0f 0b b8 ea ff ff ff c3 0f 0b b8 ea ff ff ff c3 cc cc cc cc cc cc cc cc cc cc cc cc cc 41 57 <41> 56 41 55 41 54 53 b0 01 48 85 f6 0f 84 0d 02 00 00 48 89 fb 48
RSP: 0018:ffffc9000114f690 EFLAGS: 00000093
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff813cb79f
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff888011fd0668
RBP: ffffc9000114f7b0 R08: dffffc0000000000 R09: ffffed10023fa0ce
R10: ffffed10023fa0ce R11: 0000000000000000 R12: ffff888011fd0668
R13: dffffc0000000000 R14: ffff888011fd0668 R15: ffffffff8cbe74a0
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000564557c44018 CR3: 00000001406f7000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
instrument_atomic_write include/linux/instrumented.h:86 [inline]
clear_bit include/asm-generic/bitops/instrumented-atomic.h:41 [inline]
cpumask_clear_cpu include/linux/cpumask.h:362 [inline]
switch_mm_irqs_off+0x22f/0x910 arch/x86/mm/tlb.c:607
unuse_temporary_mm arch/x86/kernel/alternative.c:946 [inline]
__text_poke+0x767/0x9f0 arch/x86/kernel/alternative.c:1042
text_poke arch/x86/kernel/alternative.c:1083 [inline]
text_poke_bp_batch+0x680/0x920 arch/x86/kernel/alternative.c:1364
text_poke_flush arch/x86/kernel/alternative.c:1470 [inline]
text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1477
arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
static_key_enable_cpuslocked+0x12d/0x250 kernel/jump_label.c:177
static_key_enable+0x16/0x20 kernel/jump_label.c:190
toggle_allocation_gate+0xbf/0x460 mm/kfence/core.c:735
process_one_work+0x86c/0x1190 kernel/workqueue.c:2307
worker_thread+0xab1/0x1300 kernel/workqueue.c:2454
kthread+0x2a3/0x2d0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30
</TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.055 msecs
----------------
Code disassembly (best guess):
0: 48 89 c7 mov %rax,%rdi
3: e8 30 26 4b 08 callq 0x84b2638
8: 31 c0 xor %eax,%eax
a: c3 retq
b: 0f 0b ud2
d: b8 ea ff ff ff mov $0xffffffea,%eax
12: c3 retq
13: 0f 0b ud2
15: b8 ea ff ff ff mov $0xffffffea,%eax
1a: c3 retq
1b: cc int3
1c: cc int3
1d: cc int3
1e: cc int3
1f: cc int3
20: cc int3
21: cc int3
22: cc int3
23: cc int3
24: cc int3
25: cc int3
26: cc int3
27: cc int3
28: 41 57 push %r15
* 2a: 41 56 push %r14 <-- trapping instruction
2c: 41 55 push %r13
2e: 41 54 push %r12
30: 53 push %rbx
31: b0 01 mov $0x1,%al
33: 48 85 f6 test %rsi,%rsi
36: 0f 84 0d 02 00 00 je 0x249
3c: 48 89 fb mov %rdi,%rbx
3f: 48 rex.W