systemd-journald[4615]: /dev/kmsg buffer overrun, some messages lost. wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access ieee80211 phy11: mac80211_hwsim_bss_info_changed(changed=0xe vif->addr=02:00:00:00:0b:00) general protection fault: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 1 PID: 9901 Comm: systemd-udevd Not tainted 4.14.209-syzkaller #0 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 ieee80211 phy3: mac80211_hwsim_config (freq=2412(2412 - 0)/noht idle=0 ps=0 smps=static) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff88808fd421c0 task.stack: ffff8880a3968000 RIP: 0010:ieee80211_multicast_to_unicast net/mac80211/tx.c:3680 [inline] RIP: 0010:ieee80211_subif_start_xmit+0x1f4/0xe00 net/mac80211/tx.c:3764 RSP: 0018:ffff8880ba507528 EFLAGS: 00010202 ieee80211 phy3: mac80211_hwsim_config (freq=2412(2412 - 0)/noht idle=0 ps=0 smps=static) RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 000000000000003b RSI: ffff8880af1d1900 RDI: 00000000000001d8 RBP: ffff888092c39e80 R08: ffffffff8b9bfe58 R09: 000000000004250e R10: ffff88808fd42b38 R11: ffff88808fd421c0 R12: 00000000c7464000 R13: ffff88808fc60d42 R14: 1ffff110174a0edc R15: ffff8880af1d1900 FS: 00007f97441f78c0(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9743bb0130 CR3: 00000000a90f7000 CR4: 00000000001406e0 ieee80211 phy11: ERP_CTS_PROT: 0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ieee80211 phy3: mac80211_hwsim_bss_info_changed(changed=0x4000 vif->addr=02:00:00:00:03:00) ieee80211 phy11: ERP_PREAMBLE: 0 __netdev_start_xmit include/linux/netdevice.h:4039 [inline] netdev_start_xmit include/linux/netdevice.h:4048 [inline] xmit_one net/core/dev.c:3005 [inline] dev_hard_start_xmit+0x188/0x890 net/core/dev.c:3021 sch_direct_xmit+0x251/0x500 net/sched/sch_generic.c:186 ieee80211 phy3: mac80211_hwsim_conf_tx (queue=0 txop=0 cw_min=15 cw_max=1023 aifs=2) __dev_xmit_skb net/core/dev.c:3214 [inline] __dev_queue_xmit+0x1ab0/0x2480 net/core/dev.c:3489 ieee80211 phy3: mac80211_hwsim_conf_tx (queue=1 txop=0 cw_min=15 cw_max=1023 aifs=2) ieee80211 phy11: ERP_SLOT: 0 neigh_resolve_output+0x4e5/0x870 net/core/neighbour.c:1369 neigh_output include/net/neighbour.h:500 [inline] ip6_finish_output2+0xf48/0x1f10 net/ipv6/ip6_output.c:120 ip6_finish_output+0x60c/0xaf0 net/ipv6/ip6_output.c:154 NF_HOOK_COND include/linux/netfilter.h:239 [inline] ip6_output+0x1c5/0x660 net/ipv6/ip6_output.c:171 dst_output include/net/dst.h:470 [inline] NF_HOOK include/linux/netfilter.h:250 [inline] mld_sendpack+0x5fe/0xea0 net/ipv6/mcast.c:1660 mld_send_cr net/ipv6/mcast.c:1956 [inline] mld_ifc_timer_expire+0x57c/0xcd0 net/ipv6/mcast.c:2455 call_timer_fn+0x14a/0x650 kernel/time/timer.c:1280 expire_timers+0x232/0x4d0 kernel/time/timer.c:1319 __run_timers kernel/time/timer.c:1637 [inline] run_timer_softirq+0x1d5/0x5a0 kernel/time/timer.c:1650 __do_softirq+0x254/0xa1d kernel/softirq.c:288 invoke_softirq kernel/softirq.c:368 [inline] irq_exit+0x193/0x240 kernel/softirq.c:409 exiting_irq arch/x86/include/asm/apic.h:648 [inline] smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1102 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline] RIP: 0010:lock_acquire+0x1ec/0x3f0 kernel/locking/lockdep.c:4001 RSP: 0018:ffff8880a396fc30 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 RAX: 1ffffffff11e1231 RBX: ffff88808fd421c0 RCX: 000000000000488e RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000286 RBP: ffff8880929be150 R08: ffffffff8b9aaf30 R09: 0000000000050409 R10: ffff88808fd42a48 R11: ffff88808fd421c0 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001 __might_fault mm/memory.c:4677 [inline] __might_fault+0x137/0x1b0 mm/memory.c:4662 _copy_to_user+0x27/0xd0 lib/usercopy.c:25 copy_to_user include/linux/uaccess.h:155 [inline] SYSC_newuname kernel/sys.c:1184 [inline] SyS_newuname+0xf6/0x230 kernel/sys.c:1177 ieee80211 phy3: mac80211_hwsim_conf_tx (queue=2 txop=0 cw_min=15 cw_max=1023 aifs=2) ieee80211 phy3: mac80211_hwsim_conf_tx (queue=3 txop=0 cw_min=15 cw_max=1023 aifs=2) do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb ieee80211 phy11: mac80211_hwsim_conf_tx (queue=0 txop=47 cw_min=3 cw_max=7 aifs=2) RIP: 0033:0x7f9743046ec7 RSP: 002b:00007ffc604e7208 EFLAGS: 00000202 ORIG_RAX: 000000000000003f ieee80211 phy11: mac80211_hwsim_conf_tx (queue=1 txop=94 cw_min=7 cw_max=15 aifs=2) RAX: ffffffffffffffda RBX: 00007ffc604e7220 RCX: 00007f9743046ec7 RDX: 0000000000006000 RSI: 00007ffc604e74c8 RDI: 00007ffc604e7220 RBP: 00007ffc604e74c8 R08: 0000558f0957f670 R09: 0000000000000110 R10: 00000000000007d8 R11: 0000000000000202 R12: 0000000000000000 ieee80211 phy11: mac80211_hwsim_conf_tx (queue=2 txop=0 cw_min=15 cw_max=1023 aifs=3) R13: 0000000000000000 R14: 0000000000000000 R15: 000000000000000f Code: ea 03 ieee80211 phy3: mac80211_hwsim_bss_info_changed(changed=0x2000 vif->addr=02:00:00:00:03:00) 80 3c 02 00 0f 85 b5 0b 00 00 49 ieee80211 phy3: mac80211_hwsim_bss_info_changed(changed=0x8bfe vif->addr=02:00:00:00:03:00) 8b 9f 70 14 00 00 48 b8 00 00 00 ieee80211 phy11: mac80211_hwsim_conf_tx (queue=3 txop=0 cw_min=15 cw_max=1023 aifs=7) 00 00 fc ff df 48 8d bb d8 01 00 ieee80211 phy3: mac80211_hwsim_bss_info_changed: BSSID changed: 50:50:50:50:50:50 00 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 06 0f 8e 9c 0b 00 00 80 bb d8 01 00 00 00 RIP: ieee80211_multicast_to_unicast net/mac80211/tx.c:3680 [inline] RSP: ffff8880ba507528 RIP: ieee80211_subif_start_xmit+0x1f4/0xe00 net/mac80211/tx.c:3764 RSP: ffff8880ba507528 ---[ end trace 9ed6f08c69e360ca ]---