kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 7731 Comm: syz-executor.4 Not tainted 5.2.0-rc5+ #1 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:call_fib6_multipath_entry_notifiers+0x97/0x160 net/ipv6/ip6_fib.c:397 Code: 00 00 00 00 89 4d a8 48 89 d1 48 c1 e9 03 48 c7 45 88 00 00 00 00 48 c7 45 90 00 00 00 00 4c 89 45 98 48 89 55 a0 c6 45 ac 01 <80> 3c 01 00 0f 85 90 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b RSP: 0018:ffff88809d577348 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 1ffff11013aaee6b RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff88809d5773f0 R08: ffff88809d577890 R09: 0000000000000002 R10: ffff88809d577638 R11: 0000000000000000 R12: ffff88809d577890 R13: ffff88809ff4e180 R14: ffff88809d5774a0 R15: 000000000000000e FS: 00007f8d234e3700(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc1203df10 CR3: 000000009f826000 CR4: 00000000001406f0 Call Trace: ip6_route_multipath_add+0x232/0x1420 net/ipv6/route.c:5088 inet6_rtm_newroute+0x99/0x100 net/ipv6/route.c:5202 rtnetlink_rcv_msg+0x34f/0x8f0 net/core/rtnetlink.c:5214 netlink_rcv_skb+0x13c/0x380 net/netlink/af_netlink.c:2477 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:5232 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x43f/0x630 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x765/0xc50 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0xf0 net/socket.c:665 ___sys_sendmsg+0x647/0x950 net/socket.c:2286 __sys_sendmsg+0xd9/0x180 net/socket.c:2324 __do_sys_sendmsg net/socket.c:2333 [inline] __se_sys_sendmsg net/socket.c:2331 [inline] __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2331 do_syscall_64+0xd0/0x530 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f8d234e2c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004592c9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8d234e36d4 R13: 00000000004c6f76 R14: 00000000004dc0b0 R15: 00000000ffffffff Modules linked in: ---[ end trace 51f4d60fba5c117f ]--- RIP: 0010:call_fib6_multipath_entry_notifiers+0x97/0x160 net/ipv6/ip6_fib.c:397 Code: 00 00 00 00 89 4d a8 48 89 d1 48 c1 e9 03 48 c7 45 88 00 00 00 00 48 c7 45 90 00 00 00 00 4c 89 45 98 48 89 55 a0 c6 45 ac 01 <80> 3c 01 00 0f 85 90 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b RSP: 0018:ffff88809d577348 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 1ffff11013aaee6b RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff88809d5773f0 R08: ffff88809d577890 R09: 0000000000000002 R10: ffff88809d577638 R11: 0000000000000000 R12: ffff88809d577890 R13: ffff88809ff4e180 R14: ffff88809d5774a0 R15: 000000000000000e FS: 00007f8d234e3700(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc1203df10 CR3: 000000009f826000 CR4: 00000000001406f0