rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-....: (10012 ticks this GP) idle=85cc/1/0x4000000000000000 softirq=13713/170892 fqs=5210 rcu: hardirqs softirqs csw/system rcu: number: 19 88954 0 rcu: cputime: 11260 40124 1124 ==> 52520(ms) rcu: (t=10503 jiffies g=10981 q=3865 ncpus=2) CPU: 0 UID: 0 PID: 6698 Comm: syz.0.233 Not tainted 6.12.0-syzkaller-09087-g3448ad23b34e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194 Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 ae b5 24 f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 23 e2 87 f5 65 8b 05 14 c8 27 74 85 c0 74 43 48 c7 04 24 0e 36 RSP: 0018:ffffc90000007980 EFLAGS: 00000206 RAX: 2ba2d99b9ec92a00 RBX: 1ffff92000000f34 RCX: ffffffff81718eba RDX: dffffc0000000000 RSI: ffffffff8c0ad8a0 RDI: 0000000000000001 RBP: ffffc90000007a10 R08: ffffffff9431f977 R09: 1ffffffff2863f2e R10: dffffc0000000000 R11: fffffbfff2863f2f R12: dffffc0000000000 R13: 1ffff92000000f30 R14: ffffc900000079a0 R15: 0000000000000246 FS: 00007f729a9666c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000034960000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: __mod_timer+0xb89/0xeb0 kernel/time/timer.c:1185 mrp_join_timer_arm net/802/mrp.c:597 [inline] mrp_join_timer+0x148/0x180 net/802/mrp.c:612 call_timer_fn+0x18e/0x650 kernel/time/timer.c:1793 expire_timers kernel/time/timer.c:1844 [inline] __run_timers kernel/time/timer.c:2418 [inline] __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2430 run_timer_base kernel/time/timer.c:2439 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2449 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:655 irq_exit_rcu+0x9/0x30 kernel/softirq.c:671 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline] sysvec_irq_work+0xa3/0xc0 arch/x86/kernel/irq_work.c:17 asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738 RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irq+0x29/0x50 kernel/locking/spinlock.c:202 Code: 90 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 2a 30 95 f5 48 89 df e8 62 77 96 f5 e8 dd 9a c1 f5 fb bf 01 00 00 00 82 e1 87 f5 65 8b 05 73 c7 27 74 85 c0 74 06 5b c3 cc cc cc cc RSP: 0018:ffffc9001b8efc58 EFLAGS: 00000282 RAX: 2ba2d99b9ec92a00 RBX: ffff88807a6e2400 RCX: ffffffff81718eba RDX: dffffc0000000000 RSI: ffffffff8c0ad8a0 RDI: 0000000000000001 RBP: ffff88801daf1f08 R08: ffffffff9431f98f R09: 1ffffffff2863f31 R10: dffffc0000000000 R11: fffffbfff2863f32 R12: ffff88807a6e2400 R13: ffffffff8e9ee120 R14: dffffc0000000000 R15: ffff888012bcbd00 find_get_pmu_context+0x6c8/0x830 kernel/events/core.c:5031 __do_sys_perf_event_open kernel/events/core.c:12983 [inline] __se_sys_perf_event_open+0x132e/0x34b0 kernel/events/core.c:12728 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: 0033:0x7f7299b80809 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:00007f729a966058 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f7299d46080 RCX: 00007f7299b80809 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000500 RBP: 00007f7299bf393e R08: 0000000000000009 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f7299d46080 R15: 00007ffe38336b18