rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-....: (1 GPs behind) idle=4dd/1/0x4000000000000002 softirq=31523/31524 fqs=5129 (detected by 1, t=10502 jiffies, g=40841, q=1900) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 12180 Comm: syz.5.2350 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x7a/0x80 kernel/kcov.c:302 Code: c1 e0 05 4d 8d 50 28 4d 39 ca 77 1e 4a c7 44 02 08 07 00 00 00 4a 89 7c 02 10 4a 89 74 02 18 4a 89 44 02 20 48 ff c1 48 89 0a 0f 1f 44 00 00 48 8b 4e 08 48 83 c1 f8 48 c1 c1 3d 48 83 f9 08 RSP: 0018:ffffc90000007640 EFLAGS: 00000046 RAX: ffffffff81360bbf RBX: ffff8880b903b1f0 RCX: ffff888025b61dc0 RDX: 0000000000000100 RSI: ffff8880b903b1f0 RDI: ffffffff7fffffff RBP: 0000000000000000 R08: ffff8880b903b1fb R09: 1ffff1101720763f R10: dffffc0000000000 R11: ffffed1017207640 R12: 0000000000000000 R13: dffffc0000000001 R14: 0000000000000000 R15: ffff8880b903b1f8 FS: 00007f0f6e1386c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fdc240976b8 CR3: 000000006168f000 CR4: 00000000003506f0 DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __phys_addr+0x1f/0x170 arch/x86/mm/physaddr.c:20 virt_to_head_page include/linux/mm.h:911 [inline] kasan_addr_to_page+0x1f/0x50 mm/kasan/report.c:150 kasan_record_aux_stack+0xb/0x100 mm/kasan/generic.c:333 irq_work_queue_on+0xf1/0x220 kernel/irq_work.c:101 rcu_read_unlock_special+0x37b/0x4a0 kernel/rcu/tree_plugin.h:667 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422 rcu_read_unlock include/linux/rcupdate.h:772 [inline] BPF_PROG_RUN_ARRAY include/linux/bpf.h:1444 [inline] trace_call_bpf+0x4f9/0x5b0 kernel/trace/bpf_trace.c:127 perf_trace_run_bpf_submit+0x79/0x1c0 kernel/events/core.c:10016 perf_trace_preemptirq_template+0x2aa/0x360 include/trace/events/preemptirq.h:14 trace_irq_enable_rcuidle+0x108/0x180 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+0x7f/0x4a0 kernel/rcu/tree_plugin.h:674 Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 32 e1 9c 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08 RSP: 0018:ffffc90000007b00 EFLAGS: 00000206 RAX: 3a05aaa66a076700 RBX: 1ffff92000000f64 RCX: 3a05aaa66a076700 RDX: dffffc0000000000 RSI: ffffffff8a2b2800 RDI: ffffffff8a79fe00 RBP: ffffc90000007bd8 R08: ffffffff901d50f7 R09: 1ffffffff203aa1e R10: dffffc0000000000 R11: fffffbfff203aa1f R12: ffffffff8c323000 R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422 rcu_read_unlock include/linux/rcupdate.h:772 [inline] ieee80211_iterate_active_interfaces_atomic+0x132/0x140 net/mac80211/util.c:831 mac80211_hwsim_beacon+0x9b/0x180 drivers/net/wireless/mac80211_hwsim.c:1865 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x4f2/0xb70 kernel/time/hrtimer.c:1749 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766 handle_softirqs+0x339/0x830 kernel/softirq.c:576 __do_softirq kernel/softirq.c:610 [inline] invoke_softirq kernel/softirq.c:450 [inline] __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671 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:acct_collect+0x17e/0x720 kernel/acct.c:580 Code: 00 74 08 4c 89 ff e8 d1 9a 4e 00 4d 8b 2f 4d 85 ed 0f 84 b3 00 00 00 45 31 e4 49 8d 7d 08 48 89 f8 48 c1 e8 03 42 80 3c 30 00 <74> 05 e8 ab 9a 4e 00 49 8b 5d 08 4c 89 e8 48 c1 e8 03 42 80 3c 30 RSP: 0018:ffffc900030bf960 EFLAGS: 00000246 RAX: 1ffff1100f892709 RBX: 00007f0f6f981000 RCX: ffff888025b61dc0 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88807c493848 RBP: ffffc900030bfa50 R08: ffff88807de069c7 R09: 1ffff1100fbc0d38 R10: dffffc0000000000 R11: ffffed100fbc0d39 R12: 00000000054c2000 R13: ffff88807c493840 R14: dffffc0000000000 R15: ffff88807de06900 do_exit+0x531/0x20c0 kernel/exit.c:853 do_group_exit+0x12e/0x300 kernel/exit.c:997 get_signal+0x6ca/0x12c0 kernel/signal.c:2900 arch_do_signal_or_restart+0xe7/0x12c0 arch/x86/kernel/signal.c:867 handle_signal_work kernel/entry/common.c:154 [inline] exit_to_user_mode_loop+0x9e/0x130 kernel/entry/common.c:178 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f0f6ff20dd9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0f6e138028 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: 0000000000000007 RBX: 00007f0f7019a180 RCX: 00007f0f6ff20dd9 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000011 RBP: 00007f0f6ffb6d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f0f7019a218 R14: 00007f0f7019a180 R15: 00007ffec5aac288