syzbot

skbuff: skb_over_panic: text:ffffffff830a5b5f len:184 put:172 head:ffff888119227c00 data:ffff888119227c00 tail:0xb8 end:0x80 dev:<NULL>
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kernel BUG at net/core/skbuff.c:110!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 392 Comm: udevd Not tainted 5.10.75-syzkaller-01082-g234d53d2bb60 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:skb_panic+0x14f/0x160 net/core/skbuff.c:106
Code: 87 85 48 8b 75 c0 48 8b 55 b8 8b 4d d4 44 8b 45 d0 4c 8b 4d c8 b8 00 00 00 00 53 41 56 41 55 41 54 e8 2c 61 89 fd 48 83 c4 20 <0f> 0b 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 55 48 89 e5 41
RSP: 0000:ffffc9000015fee8 EFLAGS: 00010286
RAX: 0000000000000087 RBX: ffffffff85873820 RCX: e40d706ede785900
RDX: 0000000000000703 RSI: 0000000000000703 RDI: 0000000000000000
RBP: ffffc9000015ff30 R08: ffffffff81545368 R09: 0000000000000003
R10: fffff5200002bf2d R11: 0000000000000004 R12: ffff888119227c00
R13: 00000000000000b8 R14: 0000000000000080 R15: dffffc0000000000
FS:  00007effebdf4840(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000557f97a85118 CR3: 0000000106bd2000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 skb_over_panic+0x2c/0x30 net/core/skbuff.c:115
 skb_put+0x205/0x210 net/core/skbuff.c:1877
 skb_put_zero include/linux/skbuff.h:2270 [inline]
 cdc_ncm_ndp16 drivers/net/usb/cdc_ncm.c:1116 [inline]
 cdc_ncm_fill_tx_frame+0x127f/0x3d50 drivers/net/usb/cdc_ncm.c:1293
 cdc_ncm_tx_fixup+0x98/0xf0 drivers/net/usb/cdc_ncm.c:1514
 usbnet_start_xmit+0x111/0x1a60 drivers/net/usb/usbnet.c:1338
 __netdev_start_xmit include/linux/netdevice.h:4823 [inline]
 netdev_start_xmit include/linux/netdevice.h:4837 [inline]
 xmit_one+0x16a/0x480 net/core/dev.c:3583
 dev_hard_start_xmit+0xad/0x1c0 net/core/dev.c:3599
 sch_direct_xmit+0x28f/0x9b0 net/sched/sch_generic.c:336
 qdisc_restart net/sched/sch_generic.c:401 [inline]
 __qdisc_run+0x245/0x3e0 net/sched/sch_generic.c:409
 qdisc_run include/net/pkt_sched.h:127 [inline]
 __dev_xmit_skb net/core/dev.c:3775 [inline]
 __dev_queue_xmit+0xe7e/0x2ac0 net/core/dev.c:4129
 dev_queue_xmit+0x17/0x20 net/core/dev.c:4194
 neigh_resolve_output+0x693/0x740 net/core/neighbour.c:1497
 neigh_output include/net/neighbour.h:518 [inline]
 ip6_finish_output2+0x109c/0x1930 net/ipv6/ip6_output.c:145
 __ip6_finish_output+0x610/0x7b0 net/ipv6/ip6_output.c:210
 ip6_finish_output+0x3f/0x1e0 net/ipv6/ip6_output.c:220
 NF_HOOK_COND include/linux/netfilter.h:293 [inline]
 ip6_output+0x211/0x4c0 net/ipv6/ip6_output.c:243
 dst_output include/net/dst.h:443 [inline]
 NF_HOOK include/linux/netfilter.h:304 [inline]
 mld_sendpack+0x5fc/0xb20 net/ipv6/mcast.c:1676
 mld_send_cr net/ipv6/mcast.c:1972 [inline]
 mld_ifc_timer_expire+0x85b/0xc50 net/ipv6/mcast.c:2471
 call_timer_fn+0x35/0x280 kernel/time/timer.c:1420
 expire_timers+0x21f/0x3b0 kernel/time/timer.c:1465
 __run_timers+0x548/0x680 kernel/time/timer.c:1756
 run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1769
 __do_softirq+0x27e/0x598 kernel/softirq.c:305
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __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+0x60/0x80 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:402 [inline]
 __irq_exit_rcu+0x128/0x150 kernel/softirq.c:432
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:444
 sysvec_apic_timer_interrupt+0xbf/0xe0 arch/x86/kernel/apic/apic.c:1095
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635
RIP: 0033:0x7effebee8707
Code: 8b 48 08 48 83 e1 f8 4c 8d 14 08 48 83 f9 10 0f 86 be 01 00 00 49 8b b4 24 88 08 00 00 48 39 ce 0f 82 ad 01 00 00 49 8b 52 08 <48> 83 fa 0f 0f 86 af 01 00 00 48 39 d6 0f 82 a6 01 00 00 49 8b 32
RSP: 002b:00007fff29d2c770 EFLAGS: 00000206
RAX: 0000559f072e2d60 RBX: 0000000000000000 RCX: 0000000000001aa0
RDX: 00000000000001d0 RSI: 0000000000156000 RDI: 0000000000000012
RBP: 0000000000000040 R08: 0000000000000000 R09: 00007effec01ba60
R10: 0000559f072e4800 R11: 0000000000000000 R12: 00007effec01ba00
R13: 0000559f0729d010 R14: fffffffffffffe98 R15: 00007effec01ba90
Modules linked in:
---[ end trace 37c02115fc8d285b ]---
RIP: 0010:skb_panic+0x14f/0x160 net/core/skbuff.c:106
Code: 87 85 48 8b 75 c0 48 8b 55 b8 8b 4d d4 44 8b 45 d0 4c 8b 4d c8 b8 00 00 00 00 53 41 56 41 55 41 54 e8 2c 61 89 fd 48 83 c4 20 <0f> 0b 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 55 48 89 e5 41
RSP: 0000:ffffc9000015fee8 EFLAGS: 00010286
RAX: 0000000000000087 RBX: ffffffff85873820 RCX: e40d706ede785900
RDX: 0000000000000703 RSI: 0000000000000703 RDI: 0000000000000000
RBP: ffffc9000015ff30 R08: ffffffff81545368 R09: 0000000000000003
R10: fffff5200002bf2d R11: 0000000000000004 R12: ffff888119227c00
R13: 00000000000000b8 R14: 0000000000000080 R15: dffffc0000000000
FS:  00007effebdf4840(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000557f97a85118 CR3: 0000000106bd2000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400