------------[ cut here ]------------ WARNING: CPU: 0 PID: 4473 at net/mac80211/tx.c:4934 __ieee80211_beacon_get+0x1abc/0x2110 net/mac80211/tx.c:5255 Modules linked in: CPU: 0 PID: 4473 Comm: syz-executor216 Not tainted 6.1.129-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4934 [inline] RIP: 0010:__ieee80211_beacon_get+0x1abc/0x2110 net/mac80211/tx.c:5255 Code: ff ff ff e8 76 86 52 f7 0f 0b 48 8b 7c 24 20 e8 fa a6 66 fe e9 6f e8 ff ff e8 60 86 52 f7 0f 0b e9 92 ed ff ff e8 54 86 52 f7 <0f> 0b e9 26 f1 ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c fc e8 RSP: 0018:ffffc90000007820 EFLAGS: 00010246 RAX: ffffffff8a38107c RBX: 0000000000000000 RCX: ffff88807cba1dc0 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000007a30 R08: ffffffff8a38019c R09: ffffffff8a37f9a2 R10: 0000000000000003 R11: ffff88807cba1dc0 R12: dffffc0000000000 R13: 1ffff92000000f1c R14: ffff888073b4e258 R15: ffffffff8a37f670 FS: 00007f658fa2e6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000040000009d030 CR3: 0000000075195000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ieee80211_beacon_get_tim+0xb1/0x5d0 net/mac80211/tx.c:5342 ieee80211_beacon_get include/net/mac80211.h:5249 [inline] mac80211_hwsim_beacon_tx+0x1d2/0xaa0 drivers/net/wireless/mac80211_hwsim.c:2086 __iterate_interfaces+0x21e/0x4b0 net/mac80211/util.c:788 ieee80211_iterate_active_interfaces_atomic+0xd4/0x170 net/mac80211/util.c:824 mac80211_hwsim_beacon+0xd0/0x1e0 drivers/net/wireless/mac80211_hwsim.c:2142 __run_hrtimer kernel/time/hrtimer.c:1689 [inline] __hrtimer_run_queues+0x5e5/0xe50 kernel/time/hrtimer.c:1753 hrtimer_run_softirq+0x196/0x2c0 kernel/time/hrtimer.c:1770 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:578 __do_softirq kernel/softirq.c:612 [inline] invoke_softirq kernel/softirq.c:452 [inline] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:661 irq_exit_rcu+0x5/0x20 kernel/softirq.c:673 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline] sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691 RIP: 0010:check_kcov_mode kernel/kcov.c:182 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x13/0x60 kernel/kcov.c:216 Code: 48 8b 3d 98 0a 16 0d 48 89 de 5b e9 67 81 56 00 cc cc cc cc cc cc cc 48 8b 04 24 65 48 8b 0d 64 d8 77 7e 65 8b 15 65 d8 77 7e <81> e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 1c 16 00 00 RSP: 0018:ffffc90004517730 EFLAGS: 00000202 RAX: ffffffff889eb863 RBX: ffff8880780a6280 RCX: ffff88807cba1dc0 RDX: 0000000080000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: 0000000000000002 R08: ffffffff889eb85a R09: ffffed100f014c6d R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: 1ffff920008a2f00 R14: ffff8880780a6364 R15: dffffc0000000000 __refcount_sub_and_test include/linux/refcount.h:282 [inline] __refcount_dec_and_test include/linux/refcount.h:315 [inline] refcount_dec_and_test include/linux/refcount.h:333 [inline] skb_unref include/linux/skbuff.h:1205 [inline] consume_skb+0x103/0x140 net/core/skbuff.c:1031 __unix_dgram_recvmsg+0xcd0/0x12c0 net/unix/af_unix.c:2507 ____sys_recvmsg+0x285/0x530 ___sys_recvmsg net/socket.c:2780 [inline] do_recvmmsg+0x46d/0xad0 net/socket.c:2874 __sys_recvmmsg net/socket.c:2953 [inline] __do_sys_recvmmsg net/socket.c:2976 [inline] __se_sys_recvmmsg net/socket.c:2969 [inline] __x64_sys_recvmmsg+0x195/0x240 net/socket.c:2969 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f658fa90829 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 91 1a 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f658fa2e218 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007f658fb1a438 RCX: 00007f658fa90829 RDX: 0000000000010106 RSI: 00004000000000c0 RDI: 0000000000000003 RBP: 00007f658fb1a430 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 00007f658fae738c R13: 00004000000001c0 R14: 0000400000000210 R15: 0000400000000200 ---------------- Code disassembly (best guess): 0: 48 8b 3d 98 0a 16 0d mov 0xd160a98(%rip),%rdi # 0xd160a9f 7: 48 89 de mov %rbx,%rsi a: 5b pop %rbx b: e9 67 81 56 00 jmp 0x568177 10: cc int3 11: cc int3 12: cc int3 13: cc int3 14: cc int3 15: cc int3 16: cc int3 17: 48 8b 04 24 mov (%rsp),%rax 1b: 65 48 8b 0d 64 d8 77 mov %gs:0x7e77d864(%rip),%rcx # 0x7e77d887 22: 7e 23: 65 8b 15 65 d8 77 7e mov %gs:0x7e77d865(%rip),%edx # 0x7e77d88f * 2a: 81 e2 00 01 ff 00 and $0xff0100,%edx <-- trapping instruction 30: 74 11 je 0x43 32: 81 fa 00 01 00 00 cmp $0x100,%edx 38: 75 35 jne 0x6f 3a: 83 .byte 0x83 3b: b9 1c 16 00 00 mov $0x161c,%ecx