INFO: task syz-executor153:8480 can't die for more than 143 seconds.
task:syz-executor153 state:D stack:26648 pid: 8480 ppid: 3647 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: 0033:0x7fabd41fbf9a
RSP: 002b:00007ffcd858b128 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffcd858b180 RCX: 00007fabd41fbf9a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffcd858b140
RBP: 00007ffcd858b140 R08: 00007ffcd858b180 R09: 0000000000000007
R10: 0000000000000000 R11: 0000000000000202 R12: 00000000200003f8
R13: 0000000000000003 R14: 0000000000000004 R15: 0000000000000005
INFO: task syz-executor153:8480 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-executor153 state:D stack:26648 pid: 8480 ppid: 3647 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: 0033:0x7fabd41fbf9a
RSP: 002b:00007ffcd858b128 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffcd858b180 RCX: 00007fabd41fbf9a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffcd858b140
RBP: 00007ffcd858b140 R08: 00007ffcd858b180 R09: 0000000000000007
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/3277:
#0: ffff888144ab2098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002e662e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2075
1 lock held by syz-executor153/8480:
#0: ffff88807b3d40e0 (&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: 91 Comm: kworker/u4:3 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:cpumask_next+0x0/0xf0 lib/cpumask.c:18
Code: 36 9d b3 fd 48 8b 0c 24 e9 6f ff ff ff 48 89 ef 48 89 0c 24 e8 21 9d b3 fd 48 8b 0c 24 e9 75 ff ff ff 0f 1f 84 00 00 00 00 00 <41> 54 49 89 f4 53 89 fb 48 83 ec 08 e8 af 05 68 fd 89 de bf ff ff
RSP: 0018:ffffc90001ccf9d0 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff8880189d57c0 RSI: ffff8880b9c3b0c8 RDI: 00000000ffffffff
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff816d9863 R11: 0000000000000000 R12: ffff8880b9c3b0c0
R13: 00000000ffffffff R14: 0000000000000008 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562174dbb038 CR3: 000000000ba8e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
smp_call_function_many_cond+0x40c/0xc90 kernel/smp.c:968
on_each_cpu_cond_mask+0x56/0xa0 kernel/smp.c:1138
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:1146 [inline]
text_poke_bp_batch+0x22c/0x6b0 arch/x86/kernel/alternative.c:1334
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_disable_cpuslocked+0x152/0x1b0 kernel/jump_label.c:207
static_key_disable+0x16/0x20 kernel/jump_label.c:215
toggle_allocation_gate mm/kfence/core.c:749 [inline]
toggle_allocation_gate+0x183/0x390 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: 36 9d ss popfq
2: b3 fd mov $0xfd,%bl
4: 48 8b 0c 24 mov (%rsp),%rcx
8: e9 6f ff ff ff jmpq 0xffffff7c
d: 48 89 ef mov %rbp,%rdi
10: 48 89 0c 24 mov %rcx,(%rsp)
14: e8 21 9d b3 fd callq 0xfdb39d3a
19: 48 8b 0c 24 mov (%rsp),%rcx
1d: e9 75 ff ff ff jmpq 0xffffff97
22: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1)
29: 00
* 2a: 41 54 push %r12 <-- trapping instruction
2c: 49 89 f4 mov %rsi,%r12
2f: 53 push %rbx
30: 89 fb mov %edi,%ebx
32: 48 83 ec 08 sub $0x8,%rsp
36: e8 af 05 68 fd callq 0xfd6805ea
3b: 89 de mov %ebx,%esi
3d: bf .byte 0xbf
3e: ff (bad)
3f: ff .byte 0xff