general protection fault, probably for non-canonical address 0xdffffc0000000034: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x00000000000001a0-0x00000000000001a7] CPU: 1 PID: 4891 Comm: systemd-udevd Not tainted 5.11.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ieee80211_multicast_to_unicast net/mac80211/tx.c:4043 [inline] RIP: 0010:ieee80211_subif_start_xmit+0x1e1/0x1270 net/mac80211/tx.c:4127 Code: c1 e8 03 80 3c 08 00 74 08 4c 89 f7 e8 b8 b6 87 f8 bb a4 01 00 00 49 03 1e 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <8a> 04 08 84 c0 0f 85 0e 0f 00 00 0f b6 1b 31 ff 89 de e8 e8 f0 41 RSP: 0000:ffffc90000db02c0 EFLAGS: 00010203 RAX: 0000000000000034 RBX: 00000000000001a4 RCX: dffffc0000000000 RDX: 0000000000000502 RSI: ffffffff8d525930 RDI: 0000000000000003 RBP: ffffc90000db0470 R08: 0000000000000005 R09: ffffffff893b2315 R10: 0000000000000002 R11: ffff88801a505340 R12: ffff8880243c7042 R13: 1ffff920001b6070 R14: ffff888030721710 R15: 1ffff1100568f81a FS: 00007faff3d4d8c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000074c698 CR3: 00000000137dd000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __netdev_start_xmit include/linux/netdevice.h:4776 [inline] netdev_start_xmit include/linux/netdevice.h:4790 [inline] xmit_one net/core/dev.c:3574 [inline] dev_hard_start_xmit+0x20b/0x450 net/core/dev.c:3590 sch_direct_xmit+0x25e/0xe40 net/sched/sch_generic.c:313 qdisc_restart net/sched/sch_generic.c:376 [inline] __qdisc_run+0xa4d/0x1a90 net/sched/sch_generic.c:384 qdisc_run include/net/pkt_sched.h:136 [inline] __dev_xmit_skb net/core/dev.c:3765 [inline] __dev_queue_xmit+0x11f7/0x2c70 net/core/dev.c:4119 neigh_hh_output include/net/neighbour.h:499 [inline] neigh_output include/net/neighbour.h:508 [inline] ip6_finish_output2+0xf72/0x13f0 net/ipv6/ip6_output.c:117 dst_output include/net/dst.h:441 [inline] NF_HOOK include/linux/netfilter.h:301 [inline] mld_sendpack+0x769/0xb80 net/ipv6/mcast.c:1679 mld_send_cr net/ipv6/mcast.c:1975 [inline] mld_ifc_timer_expire+0x864/0xc50 net/ipv6/mcast.c:2474 call_timer_fn+0xf6/0x210 kernel/time/timer.c:1417 expire_timers kernel/time/timer.c:1462 [inline] __run_timers+0x6ff/0x910 kernel/time/timer.c:1731 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1744 __do_softirq+0x372/0x7a6 kernel/softirq.c:343 asm_call_irq_on_stack+0xf/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0x9a/0xe0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:226 [inline] __irq_exit_rcu+0x22c/0x260 kernel/softirq.c:420 irq_exit_rcu+0x5/0x20 kernel/softirq.c:432 sysvec_apic_timer_interrupt+0xe0/0xf0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:628 RIP: 0033:0x559d4b3a5869 Code: 00 41 57 41 56 41 55 41 54 41 89 f4 55 53 48 89 fd 48 83 ec 18 66 66 66 64 48 8b 04 25 00 00 00 00 48 89 c3 8b 80 e4 ff ff ff <83> f8 00 0f 84 1e 01 00 00 41 0f 9f c5 85 c0 44 89 e0 7e 53 48 8d RSP: 002b:00007fffe9a8b300 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 00007faff3d4d8c0 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000001 RDI: 0000559d4b3dad20 RBP: 0000559d4b3dad20 R08: 000000000000fff1 R09: 0000000000001010 R10: 00007faff2e7eb58 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000559d4b9a82b4 R15: 00007fffe9a8b510 Modules linked in: ---[ end trace cd9c9df1a4568d3b ]--- RIP: 0010:ieee80211_multicast_to_unicast net/mac80211/tx.c:4043 [inline] RIP: 0010:ieee80211_subif_start_xmit+0x1e1/0x1270 net/mac80211/tx.c:4127 Code: c1 e8 03 80 3c 08 00 74 08 4c 89 f7 e8 b8 b6 87 f8 bb a4 01 00 00 49 03 1e 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <8a> 04 08 84 c0 0f 85 0e 0f 00 00 0f b6 1b 31 ff 89 de e8 e8 f0 41 RSP: 0000:ffffc90000db02c0 EFLAGS: 00010203 RAX: 0000000000000034 RBX: 00000000000001a4 RCX: dffffc0000000000 RDX: 0000000000000502 RSI: ffffffff8d525930 RDI: 0000000000000003 RBP: ffffc90000db0470 R08: 0000000000000005 R09: ffffffff893b2315 R10: 0000000000000002 R11: ffff88801a505340 R12: ffff8880243c7042 R13: 1ffff920001b6070 R14: ffff888030721710 R15: 1ffff1100568f81a FS: 00007faff3d4d8c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000074c698 CR3: 00000000137dd000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400