rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-....: (1 GPs behind) idle=a1f/1/0x4000000000000002 softirq=7377/7378 fqs=5243 (detected by 1, t=10502 jiffies, g=8173, q=1498) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4567 Comm: syz.2.122 Not tainted 5.15.175-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:perf_fetch_caller_regs include/linux/perf_event.h:1188 [inline] RIP: 0010:perf_trace_preemptirq_template+0x27f/0x430 include/trace/events/preemptirq.h:14 Code: 42 80 3c 30 00 74 05 e8 5f 62 43 00 49 c7 87 88 00 00 00 10 00 00 00 4d 8d af 90 00 00 00 4c 89 e8 48 c1 e8 03 42 80 3c 30 00 <74> 08 4c 89 ef e8 37 62 43 00 4c 89 e6 49 c7 45 00 00 00 00 00 48 RSP: 0018:ffffc90000007920 EFLAGS: 00000046 RAX: 1ffff110171c6a41 RBX: ffffffff8a600e46 RCX: ffff88802bf6d940 RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffff8880b8e35200 RBP: ffffc90000007a10 R08: ffffffff8188b4c7 R09: ffffed10171c765a R10: 0000000000000000 R11: dffffc0000000001 R12: ffffe8ffffcbe000 R13: ffff8880b8e35208 R14: dffffc0000000000 R15: ffff8880b8e35178 FS: 00007f2cc0eec6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000100000000 CR3: 0000000078f7c000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: trace_irq_enable_rcuidle+0x10e/0x190 include/trace/events/preemptirq.h:40 trace_hardirqs_on+0x57/0x80 kernel/trace/trace_preemptirq.c:44 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713 RIP: 0010:rcu_read_unlock_special+0x84/0x520 kernel/rcu/tree_plugin.h:671 Code: f1 f1 f1 00 f2 f2 f2 49 89 04 17 66 41 c7 44 17 09 f3 f3 41 c6 44 17 0b f3 65 44 8b 25 6d 82 96 7e 41 f7 c4 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 3a 00 00 00 00 66 42 c7 44 3a RSP: 0018:ffffc90000007b00 EFLAGS: 00000206 RAX: d3a0e897003ec400 RBX: 1ffff92000000f68 RCX: ffffffff81633db8 RDX: dffffc0000000000 RSI: ffffffff8aab2b80 RDI: ffffffff8af9f000 RBP: ffffc90000007bd0 R08: dffffc0000000000 R09: fffffbfff213123e R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8cb23d00 R13: ffff88802bf6dd98 R14: ffffc90000007b40 R15: 1ffff92000000f64 __rcu_read_unlock+0x92/0x100 kernel/rcu/tree_plugin.h:422 rcu_read_unlock include/linux/rcupdate.h:771 [inline] ieee80211_iterate_active_interfaces_atomic+0x12e/0x140 net/mac80211/util.c:831 mac80211_hwsim_beacon+0xa7/0x180 drivers/net/wireless/mac80211_hwsim.c:1865 __run_hrtimer kernel/time/hrtimer.c:1688 [inline] __hrtimer_run_queues+0x598/0xcf0 kernel/time/hrtimer.c:1752 hrtimer_run_softirq+0x196/0x2c0 kernel/time/hrtimer.c:1769 handle_softirqs+0x3a7/0x930 kernel/softirq.c:558 __do_softirq kernel/softirq.c:592 [inline] invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:641 irq_exit_rcu+0x5/0x20 kernel/softirq.c:653 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline] sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:lock_acquire+0x252/0x4f0 kernel/locking/lockdep.c:5627 Code: 2b 00 74 08 4c 89 f7 e8 cc 91 67 00 f6 44 24 61 02 0f 85 84 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:ffffc900031ef900 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff9200063df2c RCX: ffffffff81638982 RDX: dffffc0000000000 RSI: ffffffff8aab3e20 RDI: ffffffff8af9f000 RBP: ffffc900031efa58 R08: dffffc0000000000 R09: fffffbfff213123e R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200063df28 R13: dffffc0000000000 R14: ffffc900031ef960 R15: 0000000000000246 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:363 [inline] futex_wake+0x316/0x750 kernel/futex/core.c:1682 do_futex+0x1394/0x1810 kernel/futex/core.c:3987 __do_sys_futex kernel/futex/core.c:4059 [inline] __se_sys_futex+0x407/0x490 kernel/futex/core.c:4040 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f2cc307bd29 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:00007f2cc0eec0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 00007f2cc326bfa8 RCX: 00007f2cc307bd29 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f2cc326bfac RBP: 00007f2cc326bfa0 R08: 0000000000000010 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2cc326bfac R13: 0000000000000000 R14: 00007ffcd3b8aae0 R15: 00007ffcd3b8abc8