------------[ cut here ]------------
WARNING: CPU: 1 PID: 6378 at net/mac80211/tx.c:5033 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5033 [inline]
WARNING: CPU: 1 PID: 6378 at net/mac80211/tx.c:5033 __ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5444
Modules linked in:
CPU: 1 PID: 6378 Comm: syz.3.111 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5033 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5444
Code: 24 4c 89 e7 e8 fe 69 c0 f7 45 31 f6 4c 8b bc 24 a0 00 00 00 e9 7a fe ff ff e8 f9 a7 82 f7 0f 0b e9 f6 f7 ff ff e8 ed a7 82 f7 <0f> 0b e9 48 fb ff ff e8 e1 a7 82 f7 48 c7 c7 60 89 64 8e 4c 89 e6
RSP: 0018:ffffc900001f0a18 EFLAGS: 00010246
RAX: ffffffff8a047a13 RBX: ffffffff8a046816 RCX: ffff88807e118000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff88807e118000 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff8880305423c0
R13: dffffc0000000000 R14: ffff8880305428b0 R15: ffff88802f4da424
FS: 00007f071cabd6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000006b000 CR3: 000000005de57000 CR4: 00000000003506e0
Call Trace:
ieee80211_beacon_get_tim+0xbf/0x580 net/mac80211/tx.c:5571
ieee80211_beacon_get include/net/mac80211.h:5440 [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:1750 [inline]
__hrtimer_run_queues+0x520/0xc40 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+0xd3/0x190 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/0x8f0 kernel/sched/core.c:5255
Code: 0f 84 33 01 00 00 48 85 db 0f 85 52 01 00 00 e9 de 04 00 00 4c 8b 75 d0 4c 89 e7 e8 00 b9 32 09 e8 9b 29 30 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:ffffc9000c9b74b8 EFLAGS: 00000286
RAX: e975a88090365e00 RBX: 0000000000000000 RCX: e975a88090365e00
RDX: dffffc0000000000 RSI: ffffffff8acac9e0 RDI: ffffffff8b1c8fe0
RBP: ffffc9000c9b7510 R08: ffffffff8e8b19ef R09: 1ffffffff1d1633d
R10: dffffc0000000000 R11: fffffbfff1d1633e R12: ffff88807e118000
R13: dffffc0000000000 R14: ffff888025535a00 R15: ffff8880b8f3cac8
context_switch kernel/sched/core.c:5384 [inline]
__schedule+0x155b/0x45a0 kernel/sched/core.c:6700
preempt_schedule_irq+0xbf/0x150 kernel/sched/core.c:7010
irqentry_exit+0x67/0x70 kernel/entry/common.c:438
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:692
RIP: 0010:get_current arch/x86/include/asm/current.h:41 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x60 kernel/kcov.c:215
Code: 00 00 f3 0f 1e fa 53 48 89 fb e8 13 00 00 00 48 8b 3d 1c fa 03 0d 48 89 de 5b e9 d3 67 57 00 cc cc cc f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0d b0 93 7c 7e 65 8b 15 b1 93 7c 7e 81 e2 00 01 ff 00 74
RSP: 0018:ffffc9000c9b78b0 EFLAGS: 00000246
RAX: ffffffff813bfae9 RBX: 000020000006b000 RCX: 0000000000000002
RDX: ffff88807e118000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8e8b19ef R09: 1ffffffff1d1633d
R10: dffffc0000000000 R11: fffffbfff1d1633e R12: ffffc9000c9b79a8
R13: ffffc9000c9b7a30 R14: ffff8880216a8980 R15: 0000000000000214
do_user_addr_fault+0x309/0x12c0 arch/x86/mm/fault.c:1311
handle_page_fault arch/x86/mm/fault.c:1463 [inline]
exc_page_fault+0x64/0x100 arch/x86/mm/fault.c:1516
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:608
RIP: 0010:rep_movs_alternative+0x30/0x90 arch/x86/lib/copy_user_64.S:57
Code: f9 40 73 40 83 f9 08 73 21 85 c9 74 0f 8a 06 88 07 48 ff c7 48 ff c6 48 ff c9 75 f1 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 <48> 8b 06 48 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 df 83 f9 08
RSP: 0018:ffffc9000c9b7a50 EFLAGS: 00050206
RAX: ffffffff842a2a01 RBX: 0000000000000038 RCX: 0000000000000038
RDX: 0000000000000001 RSI: 000020000006b000 RDI: ffffc9000c9b7ae0
RBP: ffffc9000c9b7c70 R08: ffffc9000c9b7b17 R09: 1ffff92001936f62
R10: dffffc0000000000 R11: fffff52001936f63 R12: 000020000006b038
R13: dffffc0000000000 R14: ffffc9000c9b7ae0 R15: 000020000006b000
copy_user_generic arch/x86/include/asm/uaccess_64.h:112 [inline]
raw_copy_from_user arch/x86/include/asm/uaccess_64.h:127 [inline]
_copy_from_user+0x8b/0xe0 lib/usercopy.c:23
copy_from_user include/linux/uaccess.h:183 [inline]
copy_msghdr_from_user net/socket.c:2524 [inline]
recvmsg_copy_msghdr net/socket.c:2779 [inline]
___sys_recvmsg+0x176/0x590 net/socket.c:2851
do_recvmmsg+0x39a/0x870 net/socket.c:2949
__sys_recvmmsg net/socket.c:3028 [inline]
__do_sys_recvmmsg net/socket.c:3051 [inline]
__se_sys_recvmmsg net/socket.c:3044 [inline]
__x64_sys_recvmmsg+0x199/0x250 net/socket.c:3044
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f071bb9cdd9
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:00007f071cabd028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f071be16090 RCX: 00007f071bb9cdd9
RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000004
RBP: 00007f071bc32d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f071be16128 R14: 00007f071be16090 R15: 00007ffe5be1fbd8
----------------
Code disassembly (best guess):
0: 0f 84 33 01 00 00 je 0x139
6: 48 85 db test %rbx,%rbx
9: 0f 85 52 01 00 00 jne 0x161
f: e9 de 04 00 00 jmp 0x4f2
14: 4c 8b 75 d0 mov -0x30(%rbp),%r14
18: 4c 89 e7 mov %r12,%rdi
1b: e8 00 b9 32 09 call 0x932b920
20: e8 9b 29 30 00 call 0x3029c0
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