------------[ cut here ]------------ WARNING: CPU: 1 PID: 7243 at net/mac80211/tx.c:5031 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5031 [inline] WARNING: CPU: 1 PID: 7243 at net/mac80211/tx.c:5031 __ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5442 Modules linked in: CPU: 1 PID: 7243 Comm: syz.3.364 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 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 8e 80 c0 f7 45 31 f6 4c 8b bc 24 a0 00 00 00 e9 7a fe ff ff e8 79 be 82 f7 0f 0b e9 f6 f7 ff ff e8 6d be 82 f7 <0f> 0b e9 48 fb ff ff e8 61 be 82 f7 48 c7 c7 00 85 64 8e 4c 89 e6 RSP: 0018:ffffc900001f0a18 EFLAGS: 00010246 RAX: ffffffff8a046393 RBX: ffffffff8a045196 RCX: ffff888027f21e00 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffff888027f21e00 R09: 0000000000000003 R10: 0000000000000007 R11: 0000000000000100 R12: ffff88805ea4a3c0 R13: dffffc0000000000 R14: ffff88805ea4a8b0 R15: ffff88805f16a424 FS: 00007f1c71b286c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3658f4da08 CR3: 0000000021260000 CR4: 00000000003506e0 Call Trace: ieee80211_beacon_get_tim+0xbf/0x580 net/mac80211/tx.c:5569 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: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 f5 03 0d 48 89 de 5b e9 e3 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:ffffc9000baffa78 EFLAGS: 00000246 RAX: ffffffff8870de61 RBX: 0000000000000000 RCX: 0000000000080000 RDX: ffffc9000baffd28 RSI: 000000000007ffff RDI: 0000000000080000 RBP: ffffc9000baffc70 R08: ffffc9000baffb17 R09: 1ffff9200175ff62 R10: dffffc0000000000 R11: fffff5200175ff63 R12: ffffc9000baffd20 R13: dffffc0000000000 R14: 1ffff9200175ffa5 R15: 1ffff9200175ff58 __copy_msghdr net/socket.c:2495 [inline] copy_msghdr_from_user net/socket.c:2527 [inline] recvmsg_copy_msghdr net/socket.c:2779 [inline] ___sys_recvmsg+0x411/0x590 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: 0033:0x7f1c70b9c819 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:00007f1c71b28028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007f1c70e16090 RCX: 00007f1c70b9c819 RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000003 RBP: 00007f1c70c32c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f1c70e16128 R14: 00007f1c70e16090 R15: 00007ffd574b1378 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: f3 0f 1e fa endbr64 6: 53 push %rbx 7: 48 89 fb mov %rdi,%rbx a: e8 13 00 00 00 call 0x22 f: 48 8b 3d 1c f5 03 0d mov 0xd03f51c(%rip),%rdi # 0xd03f532 16: 48 89 de mov %rbx,%rsi 19: 5b pop %rbx 1a: e9 e3 67 57 00 jmp 0x576802 1f: cc int3 20: cc int3 21: cc int3 22: f3 0f 1e fa endbr64 26: 48 8b 04 24 mov (%rsp),%rax * 2a: 65 48 8b 0d b0 93 7c mov %gs:0x7e7c93b0(%rip),%rcx # 0x7e7c93e2 <-- trapping instruction 31: 7e 32: 65 8b 15 b1 93 7c 7e mov %gs:0x7e7c93b1(%rip),%edx # 0x7e7c93ea 39: 81 e2 00 01 ff 00 and $0xff0100,%edx 3f: 74 .byte 0x74