rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 GPs behind) idle=15d/1/0x4000000000000002 softirq=79988/79997 fqs=5249 
	(detected by 1, t=10502 jiffies, g=117677, q=974)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 25490 Comm: syz.0.5667 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:check_kcov_mode kernel/kcov.c:172 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x2a/0x60 kernel/kcov.c:206
Code: 48 8b 04 24 65 48 8b 0d a4 a3 8a 7e 65 8b 15 a5 a3 8a 7e 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 34 16 00 00 00 <74> 2c 8b 91 10 16 00 00 83 fa 02 75 21 48 8b 91 18 16 00 00 48 8b
RSP: 0018:ffffc90000007328 EFLAGS: 00000046
RAX: ffffffff81960ee6 RBX: ffffc90000007520 RCX: ffff88802046bb80
RDX: 0000000000000100 RSI: ffffc90000007680 RDI: ffffc90000007520
RBP: dffffc0000000000 R08: dffffc0000000000 R09: ffffc900000074c0
R10: fffff52000000e9f R11: 1ffff92000000e98 R12: dffffc0000000000
R13: ffffc90000007680 R14: ffff88807e75df80 R15: ffffc90000007520
FS:  00007fab926b86c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6a77bf1f98 CR3: 00000000662ba000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __perf_event_header__init_id+0x26/0x500 kernel/events/core.c:7097
 perf_prepare_sample+0x158/0x1cb0 kernel/events/core.c:7624
 __perf_event_output kernel/events/core.c:7802 [inline]
 perf_event_output_forward+0x146/0x280 kernel/events/core.c:7822
 __perf_event_overflow+0x364/0x530 kernel/events/core.c:9515
 perf_tp_event+0x32c/0xb50 kernel/events/core.c:10047
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10021
 perf_trace_preemptirq_template+0x2be/0x380 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+0x84/0x480 kernel/rcu/tree_plugin.h:674
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 11 9e 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc90000007ae0 EFLAGS: 00000206
RAX: 8901158f21577100 RBX: 1ffff92000000f60 RCX: 8901158f21577100
RDX: dffffc0000000000 RSI: ffffffff8a0b1c60 RDI: ffffffff8a59e580
RBP: ffffc90000007bb8 R08: dffffc0000000000 R09: fffffbfff1ff7c32
R10: fffffbfff1ff7c32 R11: 1ffffffff1ff7c31 R12: ffffffff8c120c00
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+0x53d/0xc40 kernel/time/hrtimer.c:1749
 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766
 handle_softirqs+0x328/0x820 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x12f/0x220 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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:unwind_next_frame+0xf32/0x1d90 arch/x86/kernel/unwind_orc.c:585
Code: c0 0f 85 b4 0b 00 00 41 c6 07 01 48 8b 44 24 68 42 0f b6 04 28 84 c0 48 8b 3c 24 0f 85 b5 0b 00 00 41 c6 06 01 4c 8b 74 24 28 <43> 0f b6 04 2c 84 c0 0f 85 5e 09 00 00 48 8b 44 24 50 42 0f b6 04
RSP: 0018:ffffc9000317f0a8 EFLAGS: 00000202
RAX: ffffc9000317f1b8 RBX: ffffc9000317f168 RCX: 0000000000000000
RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffffffff8de7206c
RBP: ffffc9000317f1b0 R08: dffffc0000000000 R09: ffffc9000317f1b8
R10: fffff5200062fe39 R11: 1ffff9200062fe37 R12: 1ffffffff1bce40e
R13: dffffc0000000000 R14: ffffc9000317f1b8 R15: ffffc9000317f19d
 arch_stack_walk+0x10c/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x98/0xe0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 ____kasan_kmalloc mm/kasan/common.c:513 [inline]
 __kasan_kmalloc+0xb5/0xf0 mm/kasan/common.c:522
 kmalloc_reserve net/core/skbuff.c:356 [inline]
 __alloc_skb+0x22c/0x750 net/core/skbuff.c:427
 alloc_skb include/linux/skbuff.h:1162 [inline]
 _sctp_make_chunk+0x5e/0x420 net/sctp/sm_make_chunk.c:1444
 sctp_make_data net/sctp/sm_make_chunk.c:1476 [inline]
 sctp_make_datafrag_empty+0xa8/0x530 net/sctp/sm_make_chunk.c:741
 sctp_datamsg_from_user+0x779/0xf00 net/sctp/chunk.c:262
 sctp_sendmsg_to_asoc+0x146d/0x1d90 net/sctp/socket.c:1860
 sctp_sendmsg+0x19ae/0x2950 net/sctp/socket.c:2032
 sock_sendmsg_nosec net/socket.c:706 [inline]
 __sock_sendmsg net/socket.c:718 [inline]
 ____sys_sendmsg+0x5a2/0x8c0 net/socket.c:2446
 ___sys_sendmsg+0x1f0/0x260 net/socket.c:2500
 __sys_sendmsg net/socket.c:2529 [inline]
 __do_sys_sendmsg net/socket.c:2538 [inline]
 __se_sys_sendmsg+0x190/0x250 net/socket.c:2536
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fab944516c9
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:00007fab926b8038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fab946a7fa0 RCX: 00007fab944516c9
RDX: 0000000000000000 RSI: 00002000000000c0 RDI: 000000000000000a
RBP: 00007fab944d3f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fab946a8038 R14: 00007fab946a7fa0 R15: 00007ffc84386498
 </TASK>