rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-...D } 2685 jiffies s: 59049 root: 0x2/. rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 7687 Comm: syz.1.978 Not tainted 6.12.0-rc2-syzkaller-00058-g75b607fab38d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:raw_atomic_try_cmpxchg_acquire include/linux/atomic/atomic-arch-fallback.h:2170 [inline] RIP: 0010:atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1302 [inline] RIP: 0010:queued_spin_lock include/asm-generic/qspinlock.h:111 [inline] RIP: 0010:do_raw_spin_lock+0x16f/0x370 kernel/locking/spinlock_debug.c:116 Code: be 04 00 00 00 e8 41 b9 89 00 41 0f b6 44 1d 00 84 c0 48 89 da 0f 85 8d 01 00 00 8b 44 24 60 b9 01 00 00 00 f0 41 0f b1 0c 24 <0f> 85 df 00 00 00 65 8b 1d 30 19 92 7e 41 0f b6 04 17 84 c0 0f 85 RSP: 0018:ffffc90000a18ac0 EFLAGS: 00000046 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000001 RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc90000a18b20 RBP: ffffc90000a18b90 R08: 0000000000000003 R09: fffff52000143164 R10: dffffc0000000000 R11: fffff52000143164 R12: ffffffff9a598d18 R13: 1ffff92000143164 R14: ffffc90000a18b20 R15: 1ffffffff34b31a4 FS: 00007f1a7be3f6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f50fd136000 CR3: 000000002fbdc000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline] _raw_spin_lock_irqsave+0xe1/0x120 kernel/locking/spinlock.c:162 debug_object_deactivate+0x158/0x390 lib/debugobjects.c:763 debug_hrtimer_deactivate kernel/time/hrtimer.c:428 [inline] debug_deactivate+0x1b/0x220 kernel/time/hrtimer.c:484 __run_hrtimer kernel/time/hrtimer.c:1659 [inline] __hrtimer_run_queues+0x305/0xd50 kernel/time/hrtimer.c:1755 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1817 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1026 [inline] __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1043 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline] sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1037 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5829 Code: 2b 00 74 08 4c 89 f7 e8 5a 1d 8b 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25 RSP: 0018:ffffc9000a8478e0 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff92001508f28 RCX: 2c38ef56026c0900 RDX: dffffc0000000000 RSI: ffffffff8c0adc40 RDI: ffffffff8c602820 RBP: ffffc9000a847a28 R08: ffffffff94290917 R09: 1ffffffff2852122 R10: dffffc0000000000 R11: fffffbfff2852123 R12: 1ffff92001508f24 R13: dffffc0000000000 R14: ffffc9000a847940 R15: 0000000000000246 __mutex_lock_common kernel/locking/mutex.c:608 [inline] __mutex_lock+0x136/0xd70 kernel/locking/mutex.c:752 io_cqring_do_overflow_flush io_uring/io_uring.c:673 [inline] io_cqring_wait io_uring/io_uring.c:2620 [inline] __do_sys_io_uring_enter io_uring/io_uring.c:3387 [inline] __se_sys_io_uring_enter+0x1fdb/0x2bb0 io_uring/io_uring.c:3279 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1a7af7dff9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f1a7be3f038 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 00007f1a7b135f80 RCX: 00007f1a7af7dff9 RDX: 0000000000400000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007f1a7aff0296 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f1a7b135f80 R15: 00007ffc725855a8