skbuff: skb_over_panic: text:ffffffff83d47f7f len:76 put:20 head:ffff8881e8e68400 data:ffff8881e8e68440 tail:0x8c end:0x80 dev:ip6gretap0
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:109!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 21051 Comm: syz-executor.2 Not tainted 5.4.219-syzkaller-00002-ga0eae55f26a0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:skb_panic+0x14a/0x150 net/core/skbuff.c:105
Code: 0a 2f 85 48 8b 74 24 08 48 8b 54 24 10 8b 0c 24 44 8b 44 24 04 49 89 e9 31 c0 53 41 55 41 54 41 57 e8 11 9e d0 00 48 83 c4 20 <0f> 0b 0f 1f 40 00 55 41 57 41 56 41 55 41 54 53 48 83 ec 68 4d 89
RSP: 0000:ffff8881f6f09ab8 EFLAGS: 00010286
RAX: 0000000000000089 RBX: ffff8881adb7e000 RCX: 3528cd9dfd93ae00
RDX: 0000000000000502 RSI: 0000000000000502 RDI: 0000000000000000
RBP: ffff8881e8e68400 R08: ffffffff814e3a77 R09: ffffed103edeaa08
R10: ffffed103edeaa08 R11: 1ffff1103edeaa07 R12: 000000000000008c
R13: 0000000000000080 R14: dffffc0000000000 R15: ffff8881e8e68440
FS:  00007f956a409700(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9562a40000 CR3: 00000001ea41f000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 skb_over_panic net/core/skbuff.c:114 [inline]
 skb_put+0x148/0x1f0 net/core/skbuff.c:1877
 add_grhead net/ipv6/mcast.c:1714 [inline]
 add_grec+0xe4f/0x1350 net/ipv6/mcast.c:1841
 mld_send_cr net/ipv6/mcast.c:1967 [inline]
 mld_ifc_timer_expire+0x783/0xc50 net/ipv6/mcast.c:2474
 call_timer_fn+0x31/0x350 kernel/time/timer.c:1418
 expire_timers+0x21e/0x400 kernel/time/timer.c:1463
 __run_timers+0x5e0/0x700 kernel/time/timer.c:1787
 run_timer_softirq+0x46/0x80 kernel/time/timer.c:1800
 __do_softirq+0x23e/0x643 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x195/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:538 [inline]
 smp_apic_timer_interrupt+0x113/0x440 arch/x86/kernel/apic/apic.c:1150
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834
 </IRQ>
Modules linked in:
---[ end trace 3393fb9183fbda0e ]---
RIP: 0010:skb_panic+0x14a/0x150 net/core/skbuff.c:105
Code: 0a 2f 85 48 8b 74 24 08 48 8b 54 24 10 8b 0c 24 44 8b 44 24 04 49 89 e9 31 c0 53 41 55 41 54 41 57 e8 11 9e d0 00 48 83 c4 20 <0f> 0b 0f 1f 40 00 55 41 57 41 56 41 55 41 54 53 48 83 ec 68 4d 89
RSP: 0000:ffff8881f6f09ab8 EFLAGS: 00010286
RAX: 0000000000000089 RBX: ffff8881adb7e000 RCX: 3528cd9dfd93ae00
RDX: 0000000000000502 RSI: 0000000000000502 RDI: 0000000000000000
RBP: ffff8881e8e68400 R08: ffffffff814e3a77 R09: ffffed103edeaa08
R10: ffffed103edeaa08 R11: 1ffff1103edeaa07 R12: 000000000000008c
R13: 0000000000000080 R14: dffffc0000000000 R15: ffff8881e8e68440
FS:  00007f956a409700(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9562a40000 CR3: 00000001ea41f000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400