skbuff: skb_over_panic: text:0000000007e415b1 len:196 put:20 head:000000001dd4bd1e data:00000000bcbe57b9 tail:0xd4 end:0xc0 dev:lo
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:104!
invalid opcode: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 3172 Comm: syz-executor0 Not tainted 4.15.0-rc2+ #146
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: 000000007e002c32 task.stack: 000000008ed6ae59
RIP: 0010:skb_panic+0x15c/0x1f0 net/core/skbuff.c:100
RSP: 0000:ffff8801db507508 EFLAGS: 00010286
RAX: 0000000000000082 RBX: ffff8801c5ee3d00 RCX: 0000000000000000
RDX: 0000000000000082 RSI: 1ffff1003b6a0e61 RDI: ffffed003b6a0e95
RBP: ffff8801db507570 R08: 1ffff1003b6a0e23 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff857d1be0
R13: ffffffff84737492 R14: 0000000000000014 R15: ffff8801c3ac0540
FS:  0000000001013940(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020d09f80 CR3: 00000001c47bd000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 skb_over_panic net/core/skbuff.c:109 [inline]
 skb_put+0x181/0x1c0 net/core/skbuff.c:1694
 add_grhead.isra.24+0x42/0x3b0 net/ipv6/mcast.c:1695
 add_grec+0xa55/0x1060 net/ipv6/mcast.c:1817
 mld_send_cr net/ipv6/mcast.c:1903 [inline]
 mld_ifc_timer_expire+0x4d2/0x770 net/ipv6/mcast.c:2448
 call_timer_fn+0x23b/0x840 kernel/time/timer.c:1320
 expire_timers kernel/time/timer.c:1357 [inline]
 __run_timers+0x7e1/0xb60 kernel/time/timer.c:1660
 run_timer_softirq+0x4c/0xb0 kernel/time/timer.c:1686
 __do_softirq+0x29d/0xbb2 kernel/softirq.c:285
 invoke_softirq kernel/softirq.c:365 [inline]
 irq_exit+0x1d3/0x210 kernel/softirq.c:405
 exiting_irq arch/x86/include/asm/apic.h:540 [inline]
 smp_apic_timer_interrupt+0x16b/0x700 arch/x86/kernel/apic/apic.c:1052
 apic_timer_interrupt+0x9d/0xb0 arch/x86/entry/entry_64.S:795
 </IRQ>
RIP: 0010:___might_sleep+0x2a/0x470 kernel/sched/core.c:6018
RSP: 0000:ffff8801c38f7628 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff11
RAX: dffffc0000000000 RBX: 1ffff1003871eec5 RCX: ffffffff819b7bac
RDX: 0000000000000000 RSI: 00000000000011ef RDI: ffffffff853166a0
RBP: ffff8801c38f76a8 R08: 0000160000000000 R09: 0000000000000000
R10: ffffffffffffffe8 R11: 0000000000000000 R12: 0000000000000000
R13: ffffffff853166a0 R14: 00000000000011ef R15: ffffffff853166a0
 clear_huge_page+0x19b/0x730 mm/memory.c:4591
 __do_huge_pmd_anonymous_page mm/huge_memory.c:570 [inline]
 do_huge_pmd_anonymous_page+0x59c/0x1b00 mm/huge_memory.c:728
 create_huge_pmd mm/memory.c:3828 [inline]
 __handle_mm_fault+0x1b9f/0x3e20 mm/memory.c:4031
 handle_mm_fault+0x334/0x8d0 mm/memory.c:4097
 __do_page_fault+0x5c9/0xc90 arch/x86/mm/fault.c:1429
 do_page_fault+0xee/0x720 arch/x86/mm/fault.c:1504
 page_fault+0x22/0x30 arch/x86/entry/entry_64.S:1094
RIP: 0033:0x439ed7
RSP: 002b:00007ffcf22a9878 EFLAGS: 00010202
RAX: 0000000020d09f80 RBX: 0000000000000002 RCX: 000000006cd355ff
RDX: 0000000000000014 RSI: 00000000007601a8 RDI: 0000000020d09f80
RBP: 0000000000000014 R08: 0000000000000000 R09: 0000000000000000
R10: 00007ffcf22a9840 R11: 0000000000000206 R12: fffffffffffffffe
R13: 0000000020d09f80 R14: 000000000000a407 R15: 0000000000000001
Code: 03 0f b6 04 01 84 c0 74 04 3c 03 7e 20 8b 4b 78 41 57 48 c7 c7 60 14 7d 85 52 56 4c 89 ea 41 50 4c 89 e6 45 89 f0 e8 c9 37 3f fd <0f> 0b 4c 89 4d b8 4c 89 45 c0 48 89 75 c8 48 89 55 d0 e8 4d f5 
RIP: skb_panic+0x15c/0x1f0 net/core/skbuff.c:100 RSP: ffff8801db507508
---[ end trace 9770ba578c084242 ]---