INFO: task syz-executor.3:13484 blocked for more than 143 seconds.
Not tainted 5.19.0-rc1-syzkaller-00024-g6bfb56e93bce #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:26848 pid:13484 ppid: 3642 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5116 [inline]
__schedule+0xa00/0x4b30 kernel/sched/core.c:6428
schedule+0xd2/0x1f0 kernel/sched/core.c:6500
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1911
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x378/0x530 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:5450 [inline]
ext4_fill_super+0x9dd6/0xe860 fs/ext4/super.c:5499
get_tree_bdev+0x440/0x760 fs/super.c:1292
vfs_get_tree+0x89/0x2f0 fs/super.c:1497
do_new_mount fs/namespace.c:3040 [inline]
path_mount+0x1320/0x1fa0 fs/namespace.c:3370
do_mount fs/namespace.c:3383 [inline]
__do_sys_mount fs/namespace.c:3591 [inline]
__se_sys_mount fs/namespace.c:3568 [inline]
__x64_sys_mount+0x27f/0x300 fs/namespace.c:3568
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+0x46/0xb0
RIP: 0033:0x7f058908a63a
RSP: 002b:00007f058a161f88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f058908a63a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f058a161fe0
RBP: 00007f058a162020 R08: 00007f058a162020 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000
R13: 0000000020000100 R14: 00007f058a161fe0 R15: 0000000020000040
Showing all locks held in the system:
1 lock held by khungtaskd/28:
#0: ffffffff8bd867a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6491
1 lock held by hwrng/752:
#0: ffffffff8c8329c8 (reading_mutex){+.+.}-{3:3}, at: hwrng_fillfn+0x141/0x370 drivers/char/hw_random/core.c:503
1 lock held by pr/netcon0/2937:
#0: ffff8880b9a39f18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:544
2 locks held by getty/3295:
#0: ffff88814abe3098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002cd62e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xe50/0x13c0 drivers/tty/n_tty.c:2124
1 lock held by syz-executor.3/13484:
#0: ffff8880795260e0 (&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 5.19.0-rc1-syzkaller-00024-g6bfb56e93bce #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:220 [inline]
watchdog+0xc22/0xf90 kernel/hung_task.c:378
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 9754 Comm: kworker/u4:12 Not tainted 5.19.0-rc1-syzkaller-00024-g6bfb56e93bce #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:__lock_is_held kernel/locking/lockdep.c:5404 [inline]
RIP: 0010:lock_is_held_type+0x9a/0x140 kernel/locking/lockdep.c:5708
Code: 0a 00 00 65 ff 05 4e 72 8b 76 85 c0 7f 12 e9 8a 00 00 00 83 c3 01 41 3b 9c 24 58 0a 00 00 7d 7d 48 63 c3 48 89 ee 48 8d 04 80 <4d> 8d 7c c5 00 4c 89 ff e8 99 fe ff ff 85 c0 74 d8 41 83 fe ff 41
RSP: 0018:ffffc900054ff8b0 EFLAGS: 00000097
RAX: 0000000000000019 RBX: 0000000000000005 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8bd866e0 RDI: ffff888056ec0b00
RBP: ffffffff8bd866e0 R08: 0000000000000000 R09: ffffffff8dbb7517
R10: fffffbfff1b76ea2 R11: 0000000000000001 R12: ffff888056ec0000
R13: ffff888056ec0a60 R14: 00000000ffffffff R15: ffff888056ec0b00
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000564c5e902600 CR3: 000000000ba8e000 CR4: 0000000000350ef0
Call Trace:
lock_is_held include/linux/lockdep.h:279 [inline]
rcu_read_lock_sched_held+0x3a/0x70 kernel/rcu/update.c:125
trace_lock_release include/trace/events/lock.h:69 [inline]
lock_release+0x560/0x780 kernel/locking/lockdep.c:5676
__raw_spin_unlock include/linux/spinlock_api_smp.h:141 [inline]
_raw_spin_unlock+0x12/0x40 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:389 [inline]
__text_poke+0x5d2/0x8e0 arch/x86/kernel/alternative.c:1113
text_poke arch/x86/kernel/alternative.c:1137 [inline]
text_poke_bp_batch+0x382/0x6c0 arch/x86/kernel/alternative.c:1432
text_poke_flush arch/x86/kernel/alternative.c:1589 [inline]
text_poke_flush arch/x86/kernel/alternative.c:1586 [inline]
text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1596
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:808 [inline]
toggle_allocation_gate+0x100/0x390 mm/kfence/core.c:800
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:302
----------------
Code disassembly (best guess):
0: 0a 00 or (%rax),%al
2: 00 65 ff add %ah,-0x1(%rbp)
5: 05 4e 72 8b 76 add $0x768b724e,%eax
a: 85 c0 test %eax,%eax
c: 7f 12 jg 0x20
e: e9 8a 00 00 00 jmpq 0x9d
13: 83 c3 01 add $0x1,%ebx
16: 41 3b 9c 24 58 0a 00 cmp 0xa58(%r12),%ebx
1d: 00
1e: 7d 7d jge 0x9d
20: 48 63 c3 movslq %ebx,%rax
23: 48 89 ee mov %rbp,%rsi
26: 48 8d 04 80 lea (%rax,%rax,4),%rax
* 2a: 4d 8d 7c c5 00 lea 0x0(%r13,%rax,8),%r15 <-- trapping instruction
2f: 4c 89 ff mov %r15,%rdi
32: e8 99 fe ff ff callq 0xfffffed0
37: 85 c0 test %eax,%eax
39: 74 d8 je 0x13
3b: 41 83 fe ff cmp $0xffffffff,%r14d
3f: 41 rex.B