syzkaller047961 uses obsolete (PF_INET,SOCK_PACKET) ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4080 at net/ipv6/ip6_fib.c:1320 fib6_repair_tree+0x57a/0x7c0 net/ipv6/ip6_fib.c:1320 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 4080 Comm: syzkaller047961 Not tainted 4.9.79-g71f1469 #34 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801d79af1a0 ffffffff81d94829 ffffffff83a47c40 ffff8801d79af278 ffffffff83f4b700 ffffffff8346d8ba 0000000000000009 ffff8801d79af268 ffffffff8142f531 0000000041b58ab3 ffffffff8418ab10 ffffffff8142f375 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] panic+0x1bc/0x3a8 kernel/panic.c:179 [] __warn+0x1c4/0x1e0 kernel/panic.c:542 [] warn_slowpath_null+0x2c/0x40 kernel/panic.c:585 [] fib6_repair_tree+0x57a/0x7c0 net/ipv6/ip6_fib.c:1320 [] fib6_del_route net/ipv6/ip6_fib.c:1459 [inline] [] fib6_del+0x88a/0xa30 net/ipv6/ip6_fib.c:1505 [] fib6_clean_node+0x336/0x4a0 net/ipv6/ip6_fib.c:1657 [] fib6_walk_continue+0x39b/0x620 net/ipv6/ip6_fib.c:1583 [] fib6_walk+0xd9/0x150 net/ipv6/ip6_fib.c:1628 [] fib6_clean_tree+0xe5/0x130 net/ipv6/ip6_fib.c:1702 [] __fib6_clean_all+0xf9/0x230 net/ipv6/ip6_fib.c:1718 [] fib6_clean_all+0x27/0x30 net/ipv6/ip6_fib.c:1729 [] rt6_ifdown+0xa1/0x7f0 net/ipv6/route.c:2715 [] addrconf_ifdown+0xd0/0x10f0 net/ipv6/addrconf.c:3566 [] addrconf_notify+0x948/0x2230 net/ipv6/addrconf.c:3490 [] notifier_call_chain+0x90/0x1a0 kernel/notifier.c:93 [] __raw_notifier_call_chain kernel/notifier.c:394 [inline] [] raw_notifier_call_chain+0x2d/0x40 kernel/notifier.c:401 [] call_netdevice_notifiers_info+0x51/0x90 net/core/dev.c:1647 [] call_netdevice_notifiers net/core/dev.c:1663 [inline] [] dev_set_mtu+0x216/0x3b0 net/core/dev.c:6577 [] dev_ifsioc+0x46e/0x820 net/core/dev_ioctl.c:262 [] dev_ioctl+0x1d5/0xd40 net/core/dev_ioctl.c:533 [] sock_do_ioctl+0x94/0xb0 net/socket.c:899 [] dev_ifsioc net/socket.c:2919 [inline] [] compat_sock_ioctl_trans net/socket.c:3174 [inline] [] compat_sock_ioctl+0x8a1/0x1350 net/socket.c:3205 [] C_SYSC_ioctl fs/compat_ioctl.c:1602 [inline] [] compat_SyS_ioctl+0x15f/0x2050 fs/compat_ioctl.c:1549 [] do_syscall_32_irqs_on arch/x86/entry/common.c:322 [inline] [] do_fast_syscall_32+0x2f7/0x890 arch/x86/entry/common.c:384 [] entry_SYSENTER_compat+0x74/0x83 arch/x86/entry/entry_64_compat.S:127 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..