skbuff: skb_over_panic: text:ffffffff861dc10d len:24 put:24 head:ffff88809ec16840 data:ffff88809ec168f0 tail:0xc8 end:0xc0 dev:ip6tnl0 ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:104! invalid opcode: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 1 PID: 7988 Comm: syz-executor.5 Not tainted 4.14.277-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff88809a316100 task.stack: ffff88809ac90000 RIP: 0010:skb_panic+0x172/0x174 net/core/skbuff.c:104 RSP: 0018:ffff8880ba507a48 EFLAGS: 00010286 RAX: 0000000000000086 RBX: ffff8880a1ddb200 RCX: 0000000000000000 RDX: 0000000000000100 RSI: ffffffff878bc600 RDI: ffffed10174a0f3f RBP: ffffffff8855b260 R08: 0000000000000086 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff861dc10d R13: 0000000000000018 R14: ffff8880942acb80 R15: 00000000000000c0 FS: 0000555556629400(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2ec2a000 CR3: 00000000b4fe8000 CR4: 00000000003426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skb_over_panic net/core/skbuff.c:109 [inline] skb_put.cold+0x24/0x24 net/core/skbuff.c:1708 igmpv3_newpack+0x49d/0xe50 net/ipv4/igmp.c:392 add_grhead+0x248/0x320 net/ipv4/igmp.c:447 add_grec+0xc9d/0xf10 net/ipv4/igmp.c:580 igmpv3_send_cr net/ipv4/igmp.c:678 [inline] igmp_ifc_timer_expire+0x79a/0xc40 net/ipv4/igmp.c:814 call_timer_fn+0x14a/0x650 kernel/time/timer.c:1280 expire_timers+0x232/0x4d0 kernel/time/timer.c:1319 __run_timers kernel/time/timer.c:1637 [inline] run_timer_softirq+0x1d5/0x5a0 kernel/time/timer.c:1650 __do_softirq+0x24d/0x9ff kernel/softirq.c:288 invoke_softirq kernel/softirq.c:368 [inline] irq_exit+0x193/0x240 kernel/softirq.c:409 exiting_irq arch/x86/include/asm/apic.h:638 [inline] smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1106 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline] RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xa3/0xe0 kernel/locking/spinlock.c:192 RSP: 0018:ffff88809ac97c90 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 RAX: 1ffffffff11e1311 RBX: 0000000000000286 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000286 RBP: ffff8880ba52ec80 R08: ffffffff8c085488 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff88809ac97de8 R14: ffff88809a316100 R15: 0000000000000001 hrtimer_start_expires include/linux/hrtimer.h:391 [inline] do_nanosleep+0x1c3/0x600 kernel/time/hrtimer.c:1480 hrtimer_nanosleep+0x1da/0x4b0 kernel/time/hrtimer.c:1537 common_nsleep+0x23/0x30 kernel/time/posix-timers.c:1206 SYSC_clock_nanosleep kernel/time/posix-timers.c:1233 [inline] SyS_clock_nanosleep+0x1ff/0x2d0 kernel/time/posix-timers.c:1211 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7faad7c64e11 RSP: 002b:00007ffea2705cc0 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6 RAX: ffffffffffffffda RBX: 000000000000036b RCX: 00007faad7c64e11 RDX: 00007ffea2705d00 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007ffea2705d8c R08: 0000000000000000 R09: 000000491a9c5da7 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032 R13: 00000000000446f5 R14: 0000000000000006 R15: 00007ffea2705df0 Code: 8b 4c 24 10 8b 8b 80 00 00 00 41 56 45 89 e8 4c 89 e2 41 57 48 89 ee 48 c7 c7 00 ab 55 88 ff 74 24 10 ff 74 24 20 e8 43 6c e4 ff <0f> 0b e8 e4 b9 36 fa 4c 8b 64 24 18 e8 3a 5b 60 fa 48 c7 c1 20 RIP: skb_panic+0x172/0x174 net/core/skbuff.c:104 RSP: ffff8880ba507a48 ---[ end trace 2f8bbb257354a7f0 ]---