rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
(detected by 1, t=10502 jiffies, g=3181, q=70)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294952404-4294941902), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g3181 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R running task stack:26240 pid: 15 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5027 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6373
schedule+0x11b/0x1f0 kernel/sched/core.c:6456
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1914
rcu_gp_fqs_loop+0x2bf/0x1080 kernel/rcu/tree.c:1972
rcu_gp_kthread+0xa4/0x360 kernel/rcu/tree.c:2145
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3579 Comm: syz-executor365 Not tainted 5.15.166-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:task_wait_context kernel/locking/lockdep.c:4618 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4707 [inline]
RIP: 0010:__lock_acquire+0x6dd/0x1ff0 kernel/locking/lockdep.c:4962
Code: 00 00 00 fc ff df eb a2 48 c7 c7 80 ef 7e 8c 48 89 de e8 26 5f c8 02 48 8b 0c 24 48 ba 00 00 00 00 00 fc ff df e9 5d ff ff ff <65> 8b 05 30 bc 9f 7e 41 b7 02 85 c0 48 8b 7c 24 10 75 1f 48 8b 44
RSP: 0018:ffffc90000007a80 EFLAGS: 00000096
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff88801f426430
RDX: dffffc0000000000 RSI: 0000000000000002 RDI: ffffffff907110c8
RBP: 00000000ffffffff R08: dffffc0000000000 R09: fffffbfff20e221a
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: ffff88801f426428 R14: 1ffff11003e84c8a R15: ffff88801f426450
FS: 00007f2d209096c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2d20908e40 CR3: 000000007897b000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
__raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline]
_raw_spin_lock_irq+0xcf/0x110 kernel/locking/spinlock.c:170
__run_hrtimer kernel/time/hrtimer.c:1692 [inline]
__hrtimer_run_queues+0x662/0xcf0 kernel/time/hrtimer.c:1752
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1814
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
__sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1096
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:202
Code: a1 68 f6 ff 90 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 3e 1e 25 f7 48 89 df e8 16 72 26 f7 e8 b1 25 49 f7 fb bf 01 00 00 00 f6 b7 19 f7 65 8b 05 d7 ba c4 75 85 c0 74 02 5b c3 e8 a4 d7 c2
RSP: 0018:ffffc90002d97bc0 EFLAGS: 00000282
RAX: ce634cf43ccc5700 RBX: ffff8880224ea500 RCX: ffffffff96867f03
RDX: dffffc0000000000 RSI: ffffffff8a8b2a20 RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff8186dac0 R09: ffffed100449d4a1
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000021
R13: dffffc0000000000 R14: ffff8880224ea998 R15: ffff8880224ea500
spin_unlock_irq include/linux/spinlock.h:413 [inline]
get_signal+0x13ee/0x14e0 kernel/signal.c:2900
arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:867
handle_signal_work kernel/entry/common.c:154 [inline]
exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:178
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
__syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f2d20950307
Code: 14 25 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 1c 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 <0f> 05 48 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89
RSP: 002b:00007f2d20909238 EFLAGS: 00000246
RAX: 00000000000000ca RBX: 00007f2d209d3308 RCX: 00007f2d20950309
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f2d209d3308
RBP: 00007f2d209d3300 R08: 00007f2d209096c0 R09: 00007f2d209096c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2d209d330c
R13: 0000000000000000 R14: 00007ffd264188a0 R15: 00007ffd26418988
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.163 msecs