------------[ cut here ]------------
WARNING: CPU: 0 PID: 4924 at net/mac80211/tx.c:4859 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
WARNING: CPU: 0 PID: 4924 at net/mac80211/tx.c:4859 __ieee80211_beacon_get+0x179f/0x2000 net/mac80211/tx.c:5083
Modules linked in:
CPU: 0 PID: 4924 Comm: syz.2.148 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
RIP: 0010:__ieee80211_beacon_get+0x179f/0x2000 net/mac80211/tx.c:5083
Code: 2a f8 0f 0b 4f 89 64 2f 04 4f 89 64 2f 0c 43 c6 44 2f 14 f8 e9 19 fe ff ff e8 0d c0 2a f8 0f 0b e9 03 ef ff ff e8 01 c0 2a f8 <0f> 0b e9 76 f2 ff ff e8 15 89 6d 00 89 d9 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc900000078e0 EFLAGS: 00010246
RAX: ffffffff894e5f9f RBX: ffff88805f3ca298 RCX: ffff88802a140000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007b08 R08: ffff88802a140000 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff888078b10600
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff92000000f2c
FS: 00007f2ec33056c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000f4e030 CR3: 000000005b13d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ieee80211_beacon_get_tim+0x48/0x840 net/mac80211/tx.c:5202
ieee80211_beacon_get include/net/mac80211.h:4983 [inline]
mac80211_hwsim_beacon_tx+0xf4/0x920 drivers/net/wireless/mac80211_hwsim.c:1812
__iterate_interfaces+0x243/0x500 net/mac80211/util.c:793
ieee80211_iterate_active_interfaces_atomic+0xb3/0x140 net/mac80211/util.c:829
mac80211_hwsim_beacon+0x9b/0x180 drivers/net/wireless/mac80211_hwsim.c:1865
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x4eb/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:__sanitizer_cov_trace_switch+0x3d/0xe0 kernel/kcov.c:-1
Code: b2 8b d2 ea 20 c2 80 fa 01 0f 85 b3 00 00 00 48 8b 06 48 85 c0 0f 84 a7 00 00 00 41 57 41 56 41 54 53 48 8b 0c cd 48 e9 2e 8a <48> 8b 54 24 20 65 4c 8b 05 76 4b 89 7e 45 31 c9 eb 08 49 ff c1 4c
RSP: 0018:ffffc9000446f578 EFLAGS: 00000202
RAX: 0000000000000002 RBX: ffff888062d90a70 RCX: 0000000000000007
RDX: 0000000000000001 RSI: ffffffff8c3d8c30 RDI: 0000000000000001
RBP: ffffc9000446f760 R08: ffffc9000446f6c7 R09: ffffc9000446f684
R10: dffffc0000000000 R11: fffff5200088ded9 R12: 000fffffffe00000
R13: dffffc0000000000 R14: 000000000efcd225 R15: 0000000062d90000
handle_pte_fault mm/memory.c:4653 [inline]
__handle_mm_fault mm/memory.c:4785 [inline]
handle_mm_fault+0x1178/0x4410 mm/memory.c:4883
do_user_addr_fault+0x489/0xc80 arch/x86/mm/fault.c:1357
handle_page_fault arch/x86/mm/fault.c:1445 [inline]
exc_page_fault+0x60/0x100 arch/x86/mm/fault.c:1501
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:606
RIP: 0010:__put_user_nocheck_4+0x3/0x11
Code: 00 00 48 39 d9 73 54 0f 01 cb 66 89 01 31 c9 0f 01 ca c3 90 90 90 90 90 48 bb fd ef ff ff ff 7f 00 00 48 39 d9 73 34 0f 01 cb <89> 01 31 c9 0f 01 ca c3 90 90 90 90 90 90 48 bb f9 ef ff ff ff 7f
RSP: 0018:ffffc9000446f8f8 EFLAGS: 00050246
RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000200000f4e030
RDX: ffffc9000446fd90 RSI: 0000000000000002 RDI: 00000000ffffffff
RBP: ffffc9000446fa90 R08: ffffc9000446f6e7 R09: 1ffff9200088dedc
R10: dffffc0000000000 R11: fffff5200088dedd R12: dffffc0000000000
R13: 0000200000f4e000 R14: 0000000000000000 R15: 0000000000000000
____sys_recvmsg+0x399/0x5e0 net/socket.c:2677
___sys_recvmsg+0x21a/0x5c0 net/socket.c:2706
do_recvmmsg+0x382/0x850 net/socket.c:2800
__sys_recvmmsg net/socket.c:2879 [inline]
__do_sys_recvmmsg net/socket.c:2902 [inline]
__se_sys_recvmmsg net/socket.c:2895 [inline]
__x64_sys_recvmmsg+0x195/0x250 net/socket.c:2895
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: 0033:0x7f2ec50caeb9
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:00007f2ec3305028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f2ec5346090 RCX: 00007f2ec50caeb9
RDX: 03fffffffffffeda RSI: 00002000000000c0 RDI: 0000000000000003
RBP: 00007f2ec5138c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2ec5346128 R14: 00007f2ec5346090 R15: 00007ffc1f863428
----------------
Code disassembly (best guess):
0: b2 8b mov $0x8b,%dl
2: d2 ea shr %cl,%dl
4: 20 c2 and %al,%dl
6: 80 fa 01 cmp $0x1,%dl
9: 0f 85 b3 00 00 00 jne 0xc2
f: 48 8b 06 mov (%rsi),%rax
12: 48 85 c0 test %rax,%rax
15: 0f 84 a7 00 00 00 je 0xc2
1b: 41 57 push %r15
1d: 41 56 push %r14
1f: 41 54 push %r12
21: 53 push %rbx
22: 48 8b 0c cd 48 e9 2e mov -0x75d116b8(,%rcx,8),%rcx
29: 8a
* 2a: 48 8b 54 24 20 mov 0x20(%rsp),%rdx <-- trapping instruction
2f: 65 4c 8b 05 76 4b 89 mov %gs:0x7e894b76(%rip),%r8 # 0x7e894bad
36: 7e
37: 45 31 c9 xor %r9d,%r9d
3a: eb 08 jmp 0x44
3c: 49 ff c1 inc %r9
3f: 4c rex.WR