rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (0 ticks this GP) idle=c8f/1/0x4000000000000000 softirq=50847/50847 fqs=0
(detected by 1, t=10502 jiffies, g=82513, q=30)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 25935 Comm: syz-executor.4 Not tainted 5.15.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:lock_is_held_type+0x125/0x190 kernel/locking/lockdep.c:5670
Code: 48 c7 c7 e0 01 4f 8a e8 d9 10 00 00 b8 ff ff ff ff 65 0f c1 05 2c ef 08 76 83 f8 01 75 40 48 c7 04 24 00 00 00 00 9c 8f 04 24 <f7> 04 24 00 02 00 00 75 46 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b
RSP: 0018:ffffc90000007998 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000010003
RDX: 0000000000000000 RSI: 0000000000010003 RDI: 0000000000000000
RBP: 0000000000000002 R08: dffffc0000000000 R09: ffffed10173864a2
R10: ffffed10173864a2 R11: 0000000000000000 R12: 0000000000000046
R13: ffff888059973900 R14: 00000000ffffffff R15: ffffffff8c91c0e0
FS: 00007f465f20a700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f465f207ff8 CR3: 000000006f202000 CR4: 00000000003506f0
Call Trace:
<IRQ>
lock_is_held include/linux/lockdep.h:283 [inline]
rcu_read_lock_sched_held+0x89/0x130 kernel/rcu/update.c:125
trace_lock_acquire+0x59/0x190 include/trace/events/lock.h:13
lock_acquire+0xa5/0x4d0 kernel/locking/lockdep.c:5596
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
debug_object_deactivate+0x61/0x400 lib/debugobjects.c:735
debug_hrtimer_deactivate kernel/time/hrtimer.c:425 [inline]
debug_deactivate kernel/time/hrtimer.c:481 [inline]
__run_hrtimer kernel/time/hrtimer.c:1653 [inline]
__hrtimer_run_queues+0x2f9/0xa60 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x3b3/0x1040 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0xf9/0x270 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1097
</IRQ>
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:tomoyo_check_acl+0xb1/0x430 security/tomoyo/domain.c:173
Code: 85 05 03 00 00 48 8b 1c 24 4c 8b 23 49 39 dc 0f 84 14 02 00 00 0f 1f 40 00 49 8d 6c 24 18 48 89 e8 48 c1 e8 03 42 0f b6 04 28 <84> c0 0f 85 1d 01 00 00 0f b6 6d 00 31 ff 89 ee e8 6a 2b aa fd 85
RSP: 0018:ffffc900161a74f8 EFLAGS: 00000a02
RAX: 0000000000000000 RBX: ffff888019969090 RCX: 0000000000040000
RDX: ffffc90011bfa000 RSI: 0000000000000eaf RDI: 0000000000000eb0
RBP: ffff88801af55098 R08: ffffffff83d89ea5 R09: ffffffff83d9e692
R10: 0000000000000002 R11: ffff888059973900 R12: ffff88801af55080
R13: dffffc0000000000 R14: ffff888019969080 R15: 0000000000000000
tomoyo_path_permission+0x1af/0x370 security/tomoyo/file.c:586
tomoyo_check_open_permission+0x2e9/0x490 security/tomoyo/file.c:777
security_file_open+0x50/0x570 security/security.c:1634
do_dentry_open+0x36c/0x1020 fs/open.c:809
do_open fs/namei.c:3428 [inline]
path_openat+0x28b4/0x3670 fs/namei.c:3561
do_filp_open+0x277/0x4f0 fs/namei.c:3588
do_sys_openat2+0x13b/0x500 fs/open.c:1200
do_sys_open fs/open.c:1216 [inline]
__do_sys_openat fs/open.c:1232 [inline]
__se_sys_openat fs/open.c:1227 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1227
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: 0033:0x7f4661c467f4
Code: 84 00 00 00 00 00 44 89 54 24 0c e8 96 f9 ff ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 89 44 24 0c e8 c8 f9 ff ff 8b 44
RSP: 002b:00007f465f208040 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f4661d97f60 RCX: 00007f4661c467f4
RDX: 0000000000000002 RSI: 00007f4661ceca91 RDI: 00000000ffffff9c
RBP: 00007f4661ceca91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002
R13: 0000000000000000 R14: 0000000020000000 R15: 0000000000022000
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g82513 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=0 timer-softirq=28921
rcu: rcu_preempt kthread starved for 10502 jiffies! g82513 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:I stack:26768 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4940 [inline]
__schedule+0xc8d/0x1270 kernel/sched/core.c:6287
schedule+0x14b/0x210 kernel/sched/core.c:6366
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x1fd/0x770 kernel/rcu/tree.c:1957
rcu_gp_kthread+0xa5/0x350 kernel/rcu/tree.c:2130
kthread+0x453/0x480 kernel/kthread.c:319
ret_from_fork+0x1f/0x30
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
----------------
Code disassembly (best guess):
0: 48 c7 c7 e0 01 4f 8a mov $0xffffffff8a4f01e0,%rdi
7: e8 d9 10 00 00 callq 0x10e5
c: b8 ff ff ff ff mov $0xffffffff,%eax
11: 65 0f c1 05 2c ef 08 xadd %eax,%gs:0x7608ef2c(%rip) # 0x7608ef45
18: 76
19: 83 f8 01 cmp $0x1,%eax
1c: 75 40 jne 0x5e
1e: 48 c7 04 24 00 00 00 movq $0x0,(%rsp)
25: 00
26: 9c pushfq
27: 8f 04 24 popq (%rsp)
* 2a: f7 04 24 00 02 00 00 testl $0x200,(%rsp) <-- trapping instruction
31: 75 46 jne 0x79
33: 41 f7 c4 00 02 00 00 test $0x200,%r12d
3a: 74 01 je 0x3d
3c: fb sti
3d: 65 gs
3e: 48 rex.W
3f: 8b .byte 0x8b