------------[ cut here ]------------ WARNING: CPU: 0 PID: 14116 at net/mac80211/tx.c:5031 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5031 [inline] WARNING: CPU: 0 PID: 14116 at net/mac80211/tx.c:5031 __ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5442 Modules linked in: CPU: 0 PID: 14116 Comm: syz.4.2220 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 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 9e 0b d4 f7 45 31 f6 4c 8b bc 24 a0 00 00 00 e9 7a fe ff ff e8 59 e5 96 f7 0f 0b e9 f6 f7 ff ff e8 4d e5 96 f7 <0f> 0b e9 48 fb ff ff e8 41 e5 96 f7 48 c7 c7 20 ff 23 8e 4c 89 e6 RSP: 0018:ffffc90000007a18 EFLAGS: 00010246 RAX: ffffffff89eea583 RBX: ffffffff89ee9386 RCX: ffff888018341e00 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffff888018341e00 R09: 0000000000000003 R10: 0000000000000007 R11: 0000000000000100 R12: ffff88806d0923c0 R13: dffffc0000000000 R14: ffff88806d0928b0 R15: ffff88802e321424 FS: 00007fb293e6a6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb293e69f98 CR3: 0000000023931000 CR4: 00000000003506f0 Call Trace: ieee80211_beacon_get_tim+0xb8/0x560 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+0x51e/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+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:bytes_is_nonzero mm/kasan/generic.c:85 [inline] RIP: 0010:memory_is_nonzero mm/kasan/generic.c:102 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:127 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:178 [inline] RIP: 0010:kasan_check_range+0x89/0x290 mm/kasan/generic.c:187 Code: 00 fc ff df 4d 8d 34 19 4d 89 f4 4d 29 dc 49 83 fc 10 7f 29 4d 85 e4 0f 84 41 01 00 00 4c 89 cb 48 f7 d3 4c 01 fb 41 80 3b 00 <0f> 85 cc 01 00 00 49 ff c3 48 ff c3 75 ee e9 21 01 00 00 44 89 dd RSP: 0018:ffffc90005487888 EFLAGS: 00000246 RAX: ffffffff88612101 RBX: fffffffffffffff5 RCX: ffffffff88612119 RDX: 0000000000000001 RSI: 0000000000000080 RDI: ffffc90005487980 RBP: 0000000000000000 R08: ffffc900054879ff R09: 1ffff92000a90f3f R10: dffffc0000000000 R11: fffff52000a90f35 R12: 0000000000000010 R13: ffffc90005487d20 R14: fffff52000a90f40 R15: 1ffff92000a90f30 __asan_memset+0x22/0x40 mm/kasan/shadow.c:84 ____sys_recvmsg+0xb9/0x5b0 net/socket.c:2796 ___sys_recvmsg+0x1b6/0x510 net/socket.c:2856 do_recvmmsg+0x360/0x7d0 net/socket.c:2950 __sys_recvmmsg net/socket.c:3029 [inline] __do_sys_recvmmsg net/socket.c:3052 [inline] __se_sys_recvmmsg net/socket.c:3045 [inline] __x64_sys_recvmmsg+0x191/0x240 net/socket.c:3045 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: 0033:0x7fb292f8efc9 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:00007fb293e6a038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007fb2931e6090 RCX: 00007fb292f8efc9 RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000005 RBP: 00007fb293011f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fb2931e6128 R14: 00007fb2931e6090 R15: 00007ffe867284a8 ---------------- Code disassembly (best guess), 3 bytes skipped: 0: df 4d 8d fisttps -0x73(%rbp) 3: 34 19 xor $0x19,%al 5: 4d 89 f4 mov %r14,%r12 8: 4d 29 dc sub %r11,%r12 b: 49 83 fc 10 cmp $0x10,%r12 f: 7f 29 jg 0x3a 11: 4d 85 e4 test %r12,%r12 14: 0f 84 41 01 00 00 je 0x15b 1a: 4c 89 cb mov %r9,%rbx 1d: 48 f7 d3 not %rbx 20: 4c 01 fb add %r15,%rbx 23: 41 80 3b 00 cmpb $0x0,(%r11) * 27: 0f 85 cc 01 00 00 jne 0x1f9 <-- trapping instruction 2d: 49 ff c3 inc %r11 30: 48 ff c3 inc %rbx 33: 75 ee jne 0x23 35: e9 21 01 00 00 jmp 0x15b 3a: 44 89 dd mov %r11d,%ebp