skbuff: skb_over_panic: text:ffffffff83d474bf len:76 put:20 head:ffff8881a300bc00 data:ffff8881a300bc40 tail:0x8c end:0x80 dev:syztnl1
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:109!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.4.219-syzkaller-00013-g4a947285bcca #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: 0018:ffff8881f5dcf8f8 EFLAGS: 00010282
RAX: 0000000000000086 RBX: ffff8881f04cc000 RCX: ade968f3e1caa800
RDX: 0000000000000502 RSI: 0000000000000502 RDI: 0000000000000000
RBP: ffff8881a300bc00 R08: ffffffff814e3a77 R09: ffffed103edcaa08
R10: ffffed103edcaa08 R11: 1ffff1103edcaa07 R12: 000000000000008c
R13: 0000000000000080 R14: dffffc0000000000 R15: ffff8881a300bc40
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000001e1170000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 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
 run_ksoftirqd+0x1f/0x30 kernel/softirq.c:603
 smpboot_thread_fn+0x551/0x930 kernel/smpboot.c:165
 kthread+0x2d8/0x360 kernel/kthread.c:288
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:354
Modules linked in:
---[ end trace 4b6bc88a549cb3f4 ]---
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: 0018:ffff8881f5dcf8f8 EFLAGS: 00010282
RAX: 0000000000000086 RBX: ffff8881f04cc000 RCX: ade968f3e1caa800
RDX: 0000000000000502 RSI: 0000000000000502 RDI: 0000000000000000
RBP: ffff8881a300bc00 R08: ffffffff814e3a77 R09: ffffed103edcaa08
R10: ffffed103edcaa08 R11: 1ffff1103edcaa07 R12: 000000000000008c
R13: 0000000000000080 R14: dffffc0000000000 R15: ffff8881a300bc40
FS:  0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000001e1170000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400