random: sshd: uninitialized urandom read (32 bytes read, 109 bits of entropy available) syzkaller583838 uses obsolete (PF_INET,SOCK_PACKET) ------------[ cut here ]------------ WARNING: CPU: 0 PID: 4045 at net/ipv6/ip6_fib.c:1315 fib6_repair_tree+0x558/0x790 net/ipv6/ip6_fib.c:1315() Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 4045 Comm: syzkaller583838 Not tainted 4.4.114-gfe09418 #3 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 0000000000000000 030efc564ed58f49 ffff8800b98170d0 ffffffff81d02e6d ffffffff83843a40 ffff8800b98171a8 ffffffff83d10c80 0000000000000009 0000000000000523 ffff8800b9817198 ffffffff8141a1da 0000000041b58ab3 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x124 lib/dump_stack.c:51 [] panic+0x1aa/0x388 kernel/panic.c:112 [] warn_slowpath_common+0x125/0x140 kernel/panic.c:455 [] warn_slowpath_null+0x29/0x30 kernel/panic.c:492 [] fib6_repair_tree+0x558/0x790 net/ipv6/ip6_fib.c:1315 [] fib6_del_route net/ipv6/ip6_fib.c:1454 [inline] [] fib6_del+0x85f/0xa00 net/ipv6/ip6_fib.c:1500 [] fib6_clean_node+0x33a/0x4e0 net/ipv6/ip6_fib.c:1652 [] fib6_walk_continue+0x39b/0x620 net/ipv6/ip6_fib.c:1578 [] fib6_walk+0x89/0xd0 net/ipv6/ip6_fib.c:1623 [] fib6_clean_tree+0xe2/0x130 net/ipv6/ip6_fib.c:1697 [] __fib6_clean_all+0xfe/0x230 net/ipv6/ip6_fib.c:1713 [] fib6_clean_all+0x27/0x30 net/ipv6/ip6_fib.c:1724 [] rt6_ifdown+0xa1/0x850 net/ipv6/route.c:2630 [] addrconf_ifdown+0x75/0xa00 net/ipv6/addrconf.c:3393 [] addrconf_notify+0x76a/0x1b80 net/ipv6/addrconf.c:3336 [] notifier_call_chain+0x95/0x1b0 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:1643 [] call_netdevice_notifiers net/core/dev.c:1659 [inline] [] dev_set_mtu+0x216/0x3b0 net/core/dev.c:6130 [] dev_ifsioc+0x450/0x800 net/core/dev_ioctl.c:262 [] dev_ioctl+0x1c3/0xce0 net/core/dev_ioctl.c:533 [] sock_do_ioctl+0x94/0xb0 net/socket.c:890 [] dev_ifsioc net/socket.c:2896 [inline] [] compat_sock_ioctl_trans net/socket.c:3151 [inline] [] compat_sock_ioctl+0x875/0x12d0 net/socket.c:3182 [] C_SYSC_ioctl fs/compat_ioctl.c:1592 [inline] [] compat_SyS_ioctl+0x28a/0x2540 fs/compat_ioctl.c:1544 [] do_syscall_32_irqs_on arch/x86/entry/common.c:390 [inline] [] do_fast_syscall_32+0x314/0x890 arch/x86/entry/common.c:457 [] sysenter_flags_fixed+0xd/0x17 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..