------------[ cut here ]------------
WARNING: CPU: 0 PID: 6740 at net/mac80211/tx.c:5031 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5031 [inline]
WARNING: CPU: 0 PID: 6740 at net/mac80211/tx.c:5031 __ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5442
Modules linked in:
CPU: 0 PID: 6740 Comm: syz.3.263 Not tainted 6.6.102-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5031 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5442
Code: 24 4c 89 e7 e8 fe 37 d5 f7 45 31 f6 4c 8b bc 24 a0 00 00 00 e9 7a fe ff ff e8 89 12 98 f7 0f 0b e9 f6 f7 ff ff e8 7d 12 98 f7 <0f> 0b e9 48 fb ff ff e8 71 12 98 f7 48 c7 c7 c0 00 24 8e 4c 89 e6
RSP: 0018:ffffc90000007a18 EFLAGS: 00010246
RAX: ffffffff89ed78a3 RBX: ffffffff89ed66a6 RCX: ffff888023903c00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff888023903c00 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff88805cfaa3c0
R13: dffffc0000000000 R14: ffff88805cfaa8b0 R15: ffff8880251d6824
FS: 00007fc2a14956c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2e81dff8 CR3: 00000000225f8000 CR4: 00000000003506f0
Call Trace:
ieee80211_beacon_get_tim+0xb8/0x560 net/mac80211/tx.c:5569
ieee80211_beacon_get include/net/mac80211.h:5438 [inline]
mac80211_hwsim_beacon_tx+0x3c7/0x780 drivers/net/wireless/virtual/mac80211_hwsim.c:2265
__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:1755 [inline]
__hrtimer_run_queues+0x51e/0xc40 kernel/time/hrtimer.c:1819
hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1836
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:finish_task_switch+0x26a/0x920 kernel/sched/core.c:5254
Code: 0f 84 37 01 00 00 48 85 db 0f 85 56 01 00 00 e9 f6 04 00 00 4c 8b 75 d0 4c 89 e7 e8 c0 a3 1a 09 e8 ab a2 2f 00 fb 4c 8b 65 c0 <49> 8d bc 24 f8 15 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc90003416c18 EFLAGS: 00000286
RAX: 2f2777409d35b800 RBX: 0000000000000000 RCX: 2f2777409d35b800
RDX: dffffc0000000000 RSI: ffffffff8aaab9c0 RDI: ffffffff8afc66c0
RBP: ffffc90003416c70 R08: ffffffff90da35c7 R09: 1ffffffff21b46b8
R10: dffffc0000000000 R11: fffffbfff21b46b9 R12: ffff888023903c00
R13: dffffc0000000000 R14: ffff888028055a00 R15: ffff8880b8e3cf08
context_switch kernel/sched/core.c:5383 [inline]
__schedule+0x14da/0x44d0 kernel/sched/core.c:6699
preempt_schedule_irq+0xb5/0x140 kernel/sched/core.c:7009
irqentry_exit+0x67/0x70 kernel/entry/common.c:438
asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:694
RIP: 0010:preempt_count_add+0x4/0x1a0 kernel/sched/core.c:5835
Code: ff 48 8b 0c 24 80 e1 07 80 c1 03 38 c1 7c 97 48 8b 3c 24 e8 fe 68 81 00 eb 8c e9 f1 fe ff ff 0f 1f 80 00 00 00 00 f3 0f 1e fa <41> 57 41 56 53 49 bf 00 00 00 00 00 fc ff df 48 c7 c0 60 a4 ea 96
RSP: 0018:ffffc90003416fe8 EFLAGS: 00000202
RAX: ffffffff813aa35f RBX: 1ffff92000682e25 RCX: 0000000000000002
RDX: ffff888023903c00 RSI: 0000000000000001 RDI: 0000000000000001
RBP: 0000000000000001 R08: ffff888023903c00 R09: 0000000000000003
R10: 0000000000000004 R11: 0000000000000002 R12: ffffc90003417128
R13: dffffc0000000000 R14: ffffc90003417160 R15: ffffffff81321018
unwind_next_frame+0xbe/0x2970 arch/x86/kernel/unwind_orc.c:479
__unwind_start+0x66a/0x7e0 arch/x86/kernel/unwind_orc.c:760
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0xf8/0x190 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
kasan_save_stack+0x3e/0x60 mm/kasan/common.c:45
__kasan_record_aux_stack+0xaf/0xc0 mm/kasan/generic.c:492
kvfree_call_rcu+0xee/0x780 kernel/rcu/tree.c:3452
sctp_bind_addr_clean net/sctp/bind_addr.c:131 [inline]
sctp_bind_addr_free+0x12f/0x170 net/sctp/bind_addr.c:140
sctp_association_free+0x2b6/0x7f0 net/sctp/associola.c:357
sctp_cmd_delete_tcb net/sctp/sm_sideeffect.c:944 [inline]
sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1330 [inline]
sctp_side_effects net/sctp/sm_sideeffect.c:1198 [inline]
sctp_do_sm+0x3e64/0x59a0 net/sctp/sm_sideeffect.c:1169
sctp_assoc_bh_rcv+0x3f2/0x630 net/sctp/associola.c:1052
sctp_backlog_rcv+0x163/0x3e0 net/sctp/input.c:331
sk_backlog_rcv include/net/sock.h:1123 [inline]
__release_sock+0x1bd/0x430 net/core/sock.c:2988
release_sock+0x5f/0x1c0 net/core/sock.c:3525
sctp_sendmsg+0x1b54/0x27e0 net/sctp/socket.c:2036
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
__sys_sendto+0x46a/0x620 net/socket.c:2201
__do_sys_sendto net/socket.c:2213 [inline]
__se_sys_sendto net/socket.c:2209 [inline]
__x64_sys_sendto+0xde/0xf0 net/socket.c:2209
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fc2a058ebe9
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:00007fc2a1495038 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fc2a07b6090 RCX: 00007fc2a058ebe9
RDX: 0000000000000001 RSI: 0000200000000100 RDI: 0000000000000005
RBP: 00007fc2a0611e19 R08: 00002000000000c0 R09: 0000000000000010
R10: 00000000040048c4 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc2a07b6128 R14: 00007fc2a07b6090 R15: 00007fff2b94e698
----------------
Code disassembly (best guess):
0: 0f 84 37 01 00 00 je 0x13d
6: 48 85 db test %rbx,%rbx
9: 0f 85 56 01 00 00 jne 0x165
f: e9 f6 04 00 00 jmp 0x50a
14: 4c 8b 75 d0 mov -0x30(%rbp),%r14
18: 4c 89 e7 mov %r12,%rdi
1b: e8 c0 a3 1a 09 call 0x91aa3e0
20: e8 ab a2 2f 00 call 0x2fa2d0
25: fb sti
26: 4c 8b 65 c0 mov -0x40(%rbp),%r12
* 2a: 49 8d bc 24 f8 15 00 lea 0x15f8(%r12),%rdi <-- trapping instruction
31: 00
32: 48 89 f8 mov %rdi,%rax
35: 48 c1 e8 03 shr $0x3,%rax
39: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax
3e: 84 c0 test %al,%al