rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-....: (7414 ticks this GP) idle=944c/1/0x4000000000000000 softirq=14241/14288 fqs=5214 rcu: hardirqs softirqs csw/system rcu: number: 1477451 195 0 rcu: cputime: 20353 32136 32 ==> 52520(ms) rcu: (t=10504 jiffies g=12677 q=3621 ncpus=2) CPU: 1 PID: 6385 Comm: syz.3.123 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:mac80211_hwsim_rx+0x0/0x5d0 drivers/net/wireless/virtual/mac80211_hwsim.c:1690 Code: 04 30 84 c0 75 06 41 c6 07 01 eb d2 44 89 f9 80 e1 07 38 c1 7c f0 4c 89 ff e8 8c b0 b7 fb eb e6 66 2e 0f 1f 84 00 00 00 00 00 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 RSP: 0018:ffffc900001f0998 EFLAGS: 00000206 RAX: 00064616eaa9c5d1 RBX: ffff88807d013320 RCX: 24f964da36e14300 RDX: ffff88803aeff8c0 RSI: ffffc900001f0a60 RDI: ffff8880313db320 RBP: ffffc900001f0b30 R08: ffffffff8e4a212f R09: 1ffffffff1c94425 R10: dffffc0000000000 R11: fffffbfff1c94426 R12: ffff88807d0135b8 R13: ffff8880313db320 R14: dffffc0000000000 R15: 0000000000000000 FS: 00007f487b03b6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff1065df4e8 CR3: 000000005ee8a000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: mac80211_hwsim_tx_frame_no_nl+0xcf5/0x1170 drivers/net/wireless/virtual/mac80211_hwsim.c:1850 mac80211_hwsim_tx_frame+0x1b5/0x200 drivers/net/wireless/virtual/mac80211_hwsim.c:2176 mac80211_hwsim_beacon_tx+0x3e9/0x780 drivers/net/wireless/virtual/mac80211_hwsim.c:2269 __iterate_interfaces+0x243/0x500 net/mac80211/util.c:766 ieee80211_iterate_active_interfaces_atomic+0xdb/0x180 net/mac80211/util.c:802 mac80211_hwsim_beacon+0xbb/0x1b0 drivers/net/wireless/virtual/mac80211_hwsim.c:2295 __run_hrtimer kernel/time/hrtimer.c:1750 [inline] __hrtimer_run_queues+0x51e/0xc40 kernel/time/hrtimer.c:1814 hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1831 handle_softirqs+0x280/0x820 kernel/softirq.c:578 __do_softirq kernel/softirq.c:612 [inline] invoke_softirq kernel/softirq.c:452 [inline] __irq_exit_rcu+0xc7/0x190 kernel/softirq.c:661 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0010:preempt_schedule_irq+0xb0/0x140 kernel/sched/core.c:7009 Code: 44 24 20 f6 44 24 21 02 74 0b 0f 0b 48 f7 03 08 00 00 00 74 63 bf 01 00 00 00 e8 8b b3 eb f6 e8 26 3a 1c f7 fb bf 01 00 00 00 db b5 ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24 RSP: 0018:ffffc900050c7c80 EFLAGS: 00000282 RAX: 24f964da36e14300 RBX: ffff888024675a00 RCX: 24f964da36e14300 RDX: dffffc0000000000 RSI: ffffffff8aaabce0 RDI: 0000000000000001 RBP: ffffc900050c7d30 R08: ffffffff8e4a212f R09: 1ffffffff1c94425 R10: dffffc0000000000 R11: fffffbfff1c94426 R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000a18f90 irqentry_exit+0x67/0x70 kernel/entry/common.c:438 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0010:__might_resched+0x0/0x610 kernel/sched/core.c:10163 Code: 8c 77 ff ff ff 49 89 fc 4c 89 f7 89 f5 e8 78 d1 7f 00 4c 89 e7 89 ee e9 60 ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 RSP: 0018:ffffc900050c7df8 EFLAGS: 00000246 RAX: 24f964da36e14300 RBX: 0000000000000000 RCX: 1ffff92000a18fac RDX: 0000000000000000 RSI: 00000000000000f1 RDI: ffffffff8aaa1180 RBP: ffffc900050c7ec0 R08: ffffffff8e4a212f R09: 1ffffffff1c94425 R10: dffffc0000000000 R11: fffffbfff1c94426 R12: dffffc0000000000 R13: ffff888024676f80 R14: ffff888024676400 R15: ffff888024676368 task_work_run+0x1e6/0x250 kernel/task_work.c:241 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177 exit_to_user_mode_prepare+0xf6/0x180 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302 do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f487a18f749 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:00007f487b03b038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: 0000000000000005 RBX: 00007f487a3e6090 RCX: 00007f487a18f749 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000140 RBP: 00007f487a213f91 R08: 0000000000000002 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007f487a3e6128 R14: 00007f487a3e6090 R15: 00007ffc56265fd8