rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 1-...0: (1 GPs behind) idle=a71c/1/0x4000000000000000 softirq=13454/13456 fqs=2100 rcu: hardirqs softirqs csw/system rcu: number: 0 0 0 rcu: cputime: 0 0 0 ==> 52550(ms) rcu: (detected by 0, t=10506 jiffies, g=9017, q=999 ncpus=2) Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 5819 Comm: syz-executor Not tainted 6.13.0-rc4-syzkaller-00071-gfd0584d220fe #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:26 [inline] RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:87 [inline] RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:123 [inline] RIP: 0010:lock_release+0x177/0x6f0 kernel/locking/lockdep.c:5866 Code: 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 80 3c 02 00 0f 85 19 05 00 00 49 81 3c 24 a0 17 7c 93 0f 84 65 02 00 00 9c <8f> 04 24 fa 48 c7 c7 a0 dc 6c 8b e8 99 15 b3 09 48 89 ea 83 e5 07 RSP: 0018:ffffc90000a18d48 EFLAGS: 00000087 RAX: dffffc0000000000 RBX: 1ffff920001431ac RCX: ffffffff8176b989 RDX: 1ffff110170e5943 RSI: 0000000000000000 RDI: ffff8880268e535c RBP: ffffffff905f6874 R08: 0000000000000000 R09: fffffbfff20be6aa R10: ffffffff905f3557 R11: 0000000000000001 R12: ffff8880b872ca18 R13: ffff8880b872cb00 R14: ffff8880268e4880 R15: ffffffff89415400 FS: 000055558ed9e500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002004c000 CR3: 0000000060572000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline] _raw_spin_unlock_irqrestore+0x1a/0x80 kernel/locking/spinlock.c:194 __run_hrtimer kernel/time/hrtimer.c:1735 [inline] __hrtimer_run_queues+0x53d/0xae0 kernel/time/hrtimer.c:1803 hrtimer_interrupt+0x392/0x8e0 kernel/time/hrtimer.c:1865 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline] __sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:194 Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 a6 72 4a f6 48 89 df e8 ee f1 4a f6 f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 01 00 00 00 e8 e5 d6 3b f6 65 8b 05 a6 92 d7 74 85 c0 74 16 5b RSP: 0018:ffffc900041efc38 EFLAGS: 00000246 RAX: 0000000000000002 RBX: ffffffff9a9eaa20 RCX: 1ffffffff20bde61 RDX: 0000000000000000 RSI: ffffffff8b6cd9e0 RDI: ffffffff8bd1ed60 RBP: 0000000000000206 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff905f3557 R11: 0000000000000000 R12: 1ffff9200083df8e R13: ffffc900041efd78 R14: 0000000000000000 R15: ffffffff9a9eaa20 __debug_object_init+0x2dd/0x3e0 lib/debugobjects.c:755 debug_hrtimer_init_on_stack kernel/time/hrtimer.c:422 [inline] debug_init_on_stack kernel/time/hrtimer.c:462 [inline] hrtimer_setup_sleeper_on_stack kernel/time/hrtimer.c:2046 [inline] hrtimer_nanosleep+0xa1/0x380 kernel/time/hrtimer.c:2124 common_nsleep+0xa1/0xd0 kernel/time/posix-timers.c:1356 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1402 [inline] __se_sys_clock_nanosleep kernel/time/posix-timers.c:1379 [inline] __x64_sys_clock_nanosleep+0x344/0x4a0 kernel/time/posix-timers.c:1379 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f5cb95b85e5 Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 f6 54 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 8b 74 24 0c 8b 3c 24 b8 e6 00 00 00 0f 05 <44> 89 c7 48 89 04 24 e8 4f 55 ff ff 48 8b 04 24 48 83 c4 28 f7 d8 RSP: 002b:00007ffd31a88eb0 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6 RAX: ffffffffffffffda RBX: 0000000000000019 RCX: 00007f5cb95b85e5 RDX: 00007ffd31a88ef0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007ffd31a88f4c R08: 0000000000000000 R09: 00007f5cba3a8000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032 R13: 0000000000015772 R14: 00007ffd31a88fa0 R15: 0000000000000bb8