rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2671 jiffies s: 67941 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 PID: 14082 Comm: syz.8.2803 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:sched_clock_cpu+0x0/0x250 kernel/sched/clock.c:364 Code: 0c 5b 41 5c 41 5d 41 5e 41 5f c3 48 c7 c7 80 32 9f 8c 48 89 de e8 f0 cf ce 02 e9 44 ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 <55> 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec 80 00 RSP: 0000:ffffc900001e09c0 EFLAGS: 00000086 RAX: 0000000000000001 RBX: ffff8880b8f277a0 RCX: e2f86103f0f98100 RDX: 0000000000000000 RSI: ffffffff8adef740 RDI: 0000000000000001 RBP: 0000000000010000 R08: dffffc0000000000 R09: fffffbfff1c3ed56 R10: fffffbfff1c3ed56 R11: 1ffffffff1c3ed55 R12: dffffc0000000000 R13: 0000000000000000 R14: ffff888076ea1dc0 R15: ffffffff8c5e4988 FS: 00007fbc3ac406c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8c08651f98 CR3: 0000000026a66000 CR4: 00000000003506e0 DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000200000000300 DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: irqtime_account_irq+0x6a/0x1b0 kernel/sched/cputime.c:60 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline] sysvec_irq_work+0x45/0xc0 arch/x86/kernel/irq_work.c:17 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728 RIP: 0010:rcu_read_unlock_special+0x84/0x500 kernel/rcu/tree_plugin.h:685 Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 ed 90 96 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b RSP: 0000:ffffc900001e0ac0 EFLAGS: 00000206 RAX: e2f86103f0f98100 RBX: 1ffff9200003c160 RCX: e2f86103f0f98100 RDX: dffffc0000000000 RSI: ffffffff8a8c0580 RDI: ffffffff8adef760 RBP: ffffc900001e0bc0 R08: dffffc0000000000 R09: ffffed10171e6afa R10: ffffed10171e6afa R11: 1ffff110171e6af9 R12: 0000000000000246 R13: dffffc0000000000 R14: ffff8880b8f3b900 R15: 0000000000000002 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426 rcu_read_unlock include/linux/rcupdate.h:823 [inline] ieee80211_rx_napi+0x219/0x3c0 net/mac80211/rx.c:5330 ieee80211_rx include/net/mac80211.h:4846 [inline] ieee80211_handle_queued_frames+0x105/0x1b0 net/mac80211/main.c:317 tasklet_action_common+0x298/0x400 kernel/softirq.c:826 handle_softirqs+0x2a1/0x920 kernel/softirq.c:596 __do_softirq kernel/softirq.c:630 [inline] invoke_softirq kernel/softirq.c:470 [inline] __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:679 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline] sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691 RIP: 0010:exit_to_user_mode_loop+0x40/0x110 kernel/entry/common.c:164 Code: fb eb 1d e8 72 06 aa 08 65 48 8b 05 0a 8f 94 7e 4c 8b 30 41 f7 c6 0e 30 02 00 0f 84 c4 00 00 00 e8 25 52 19 00 fb 41 f6 c6 08 <74> 05 e8 69 8e b2 08 41 f7 c6 00 10 00 00 74 08 48 89 df e8 28 44 RSP: 0000:ffffc9000504ff10 EFLAGS: 00000202 RAX: e2f86103f0f98100 RBX: ffffc9000504ff58 RCX: e2f86103f0f98100 RDX: dffffc0000000000 RSI: ffffffff8a8c0580 RDI: ffffffff8adef760 RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed10171e6afa R10: ffffed10171e6afa R11: 1ffff110171e6af9 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000008 R15: ffff888076ea1dc0 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210 irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:316 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691 RIP: 0033:0x7fbc39d8f6c9 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:00007fbc3ac40038 EFLAGS: 00000246 RAX: ffffffffffffffea RBX: 00007fbc39fe5fa0 RCX: 00007fbc39d8f6c9 RDX: 0000000000000300 RSI: 000000000000000f RDI: 0000000000000011 RBP: 00007fbc39e11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fbc39fe6038 R14: 00007fbc39fe5fa0 R15: 00007ffd51ffd3c8