rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P11 1-...D } 2669 jiffies s: 30833 root: 0x2/T rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 9557 Comm: syz-executor.4 Not tainted 6.10.0-rc2-next-20240607-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:23 [inline] RIP: 0010:raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:457 [inline] RIP: 0010:rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline] RIP: 0010:rcu_is_watching+0x5a/0xb0 kernel/rcu/tree.c:718 Code: f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 3c e8 7f 00 48 c7 c3 08 7d 03 00 49 03 1e 48 89 d8 48 c1 e8 03 42 0f b6 04 38 <84> c0 75 22 8b 03 65 ff 0d 11 4c 87 7e 74 10 83 e0 04 c1 e8 02 5b RSP: 0018:ffffc90000a18d40 EFLAGS: 00000802 RAX: 0000000000000000 RBX: ffff8880b9537d08 RCX: ffffffff8183b46e RDX: ffff8880210bbc00 RSI: ffffffff8c200de0 RDI: ffffffff8c200da0 RBP: ffffc90000a18ea8 R08: ffffffff8183b494 R09: 1ffffffff1f5c04d R10: dffffc0000000000 R11: fffffbfff1f5c04e R12: 1ffff110172a593b R13: ffffffff8996a740 R14: ffffffff8ddc9a28 R15: dffffc0000000000 FS: 00007fe89b1bb6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020003c80 CR3: 0000000015f3e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: trace_hrtimer_expire_entry include/trace/events/timer.h:259 [inline] __run_hrtimer kernel/time/hrtimer.c:1684 [inline] __hrtimer_run_queues+0x4ee/0xd50 kernel/time/hrtimer.c:1751 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1813 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5821 Code: 2b 00 74 08 4c 89 f7 e8 3a 18 8a 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:ffffc90004d1f9e0 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff920009a3f48 RCX: da50a4908bccd700 RDX: dffffc0000000000 RSI: ffffffff8bcad360 RDI: ffffffff8c200e00 RBP: ffffc90004d1fb38 R08: ffffffff92fc97c7 R09: 1ffffffff25f92f8 R10: dffffc0000000000 R11: fffffbfff25f92f9 R12: 1ffff920009a3f44 R13: dffffc0000000000 R14: ffffc90004d1fa40 R15: 0000000000000246 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] io_cq_lock io_uring/io_uring.c:646 [inline] __io_cqring_overflow_flush+0x1c7/0x690 io_uring/io_uring.c:684 io_cqring_do_overflow_flush io_uring/io_uring.c:717 [inline] io_cqring_wait io_uring/io_uring.c:2524 [inline] __do_sys_io_uring_enter io_uring/io_uring.c:3289 [inline] __se_sys_io_uring_enter+0x1b76/0x2670 io_uring/io_uring.c:3181 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: 0033:0x7fe89a47cf69 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 01 48 RSP: 002b:00007fe89b1bb0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 00007fe89a5b3f80 RCX: 00007fe89a47cf69 RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007fe89a4da6fe R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000007 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fe89a5b3f80 R15: 00007fffd0440708