rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2670 jiffies s: 33413 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 11420 Comm: syz.2.1868 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:instrument_atomic_write include/linux/instrumented.h:87 [inline]
RIP: 0010:atomic_set include/linux/atomic/atomic-instrumented.h:41 [inline]
RIP: 0010:irq_work_single+0x4a/0x230 kernel/irq_work.c:203
Code: 4c 89 f7 be 04 00 00 00 e8 d3 b3 44 00 4d 89 f7 49 c1 ef 03 43 0f b6 04 27 84 c0 0f 85 5f 01 00 00 45 8b 2e 44 89 ed 83 e5 fe <4c> 89 f7 be 04 00 00 00 e8 b9 b3 44 00 43 0f b6 04 27 84 c0 0f 85
RSP: 0018:ffffc900000078e8 EFLAGS: 00000006
RAX: 0000000000000000 RBX: ffff8880b8e3b9f0 RCX: ffffffff818ee0ad
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880b8e3b9f8
RBP: 0000000000000022 R08: ffff8880b8e3b9fb R09: 1ffff110171c773f
R10: dffffc0000000000 R11: ffffed10171c7740 R12: dffffc0000000000
R13: 0000000000000023 R14: ffff8880b8e3b9f8 R15: 1ffff110171c773f
FS:  00007f85043da6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000007ca3d000 CR4: 00000000003506f0
DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 irq_work_run_list kernel/irq_work.c:242 [inline]
 irq_work_run+0x159/0x2f0 kernel/irq_work.c:251
 __sysvec_irq_work+0xba/0x350 arch/x86/kernel/irq_work.c:22
 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
 sysvec_irq_work+0x4a/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+0x7f/0x510 kernel/rcu/tree_plugin.h:685
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 82 22 95 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc90000007ac0 EFLAGS: 00000206
RAX: 88b1314bed3beb00 RBX: 1ffff92000000f60 RCX: 88b1314bed3beb00
RDX: dffffc0000000000 RSI: ffffffff8a8c19a0 RDI: ffffffff8adf1ba0
RBP: ffffc90000007bb0 R08: ffffffff90afa2ff R09: 1ffffffff215f45f
R10: dffffc0000000000 R11: fffffbfff215f460 R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8e3b900 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 ieee80211_iterate_active_interfaces_atomic+0x156/0x170 net/mac80211/util.c:826
 mac80211_hwsim_beacon+0xb7/0x1b0 drivers/net/wireless/mac80211_hwsim.c:2147
 __run_hrtimer kernel/time/hrtimer.c:1747 [inline]
 __hrtimer_run_queues+0x54a/0xd50 kernel/time/hrtimer.c:1811
 hrtimer_run_softirq+0x183/0x2a0 kernel/time/hrtimer.c:1828
 handle_softirqs+0x2a1/0x930 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x0/0x80 kernel/kcov.c:321
Code: 28 4d 39 ca 77 22 89 ff 89 f6 49 ff c0 4c 89 01 48 c7 44 11 08 05 00 00 00 48 89 7c 11 10 48 89 74 11 18 48 89 44 11 20 c3 90 <48> 8b 04 24 65 48 8b 0d a4 e4 7f 7e 65 8b 15 a5 e4 7f 7e 81 e2 00
RSP: 0018:ffffc9000c5fef38 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc9000c5ff0e0 RCX: 0000000000080000
RDX: ffffc9000c959000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: 000000008c050402 R08: ffff88807d57f537 R09: 1ffff1100faafea6
R10: dffffc0000000000 R11: ffffed100faafea7 R12: dffffc0000000000
R13: 000000000000010b R14: ffffc9000c5ff0e2 R15: 0000000000000002
 tcp_options_write+0xb0/0xc70 net/ipv4/tcp_output.c:628
 __tcp_transmit_skb+0x1431/0x31a0 net/ipv4/tcp_output.c:1360
 tcp_transmit_skb net/ipv4/tcp_output.c:1423 [inline]
 tcp_send_syn_data net/ipv4/tcp_output.c:3901 [inline]
 tcp_connect+0x2db9/0x4ac0 net/ipv4/tcp_output.c:3940
 tcp_v6_connect+0x119b/0x18c0 net/ipv6/tcp_ipv6.c:343
 __inet_stream_connect+0x242/0xe10 net/ipv4/af_inet.c:668
 tcp_sendmsg_fastopen+0x38f/0x600 net/ipv4/tcp.c:1211
 tcp_sendmsg_locked+0x3616/0x3a90 net/ipv4/tcp.c:1259
 tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1494
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 ____sys_sendmsg+0x5be/0x970 net/socket.c:2518
 ___sys_sendmsg+0x2a2/0x360 net/socket.c:2572
 __sys_sendmsg net/socket.c:2601 [inline]
 __do_sys_sendmsg net/socket.c:2610 [inline]
 __se_sys_sendmsg+0x1bb/0x2a0 net/socket.c:2608
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f850359ce59
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:00007f85043da028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f8503815fa0 RCX: 00007f850359ce59
RDX: 0000000020000001 RSI: 0000200000000780 RDI: 0000000000000003
RBP: 00007f8503632d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8503816038 R14: 00007f8503815fa0 R15: 00007fff64974d48
 </TASK>