BUG: Address IPV6ADDR on device lo is missing its host route.

Status: upstream: reported on 2026/09/26 09:21
Reported-by: syzbot+fb9560db3369aacc5e1b@syzkaller.appspotmail.com
First crash: 46d, last: 39d
▶ ▼ Similar bugs (5)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-5-10 BUG: Address IPV6ADDR on device lo is missing its host route. -1 syz, C 105 8d13h 52d 0/2 upstream: reported C repro on 2026/09/21 01:01
android-6-1 BUG: Address IPV6ADDR on device lo is missing its host route. origin:upstream -1 syz, C 31 15d 47d 0/2 upstream: reported C repro on 2026/09/25 16:37
linux-6.1 BUG: Address IPV6ADDR on device lo is missing its host route. -1 syz, C 19 9h31m 45d 0/3 upstream: reported C repro on 2026/09/27 22:20
linux-5.15 BUG: Address IPV6ADDR on device lo is missing its host route. -1 syz, C 4 27d 68d 0/3 upstream: reported C repro on 2026/09/04 13:28
android-5-15 BUG: Address IPV6ADDR on device lo is missing its host route. -1 syz, C 26 2d22h 46d 0/2 upstream: reported C repro on 2026/09/27 00:41

Sample crash report:
IPv6: BUG: Address fc00:: on device lo is missing its host route.

Crashes (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/10/03 15:27 linux-6.6.y a91a6aa9253c 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan BUG: Address IPV6ADDR on device lo is missing its host route.
2026/10/03 15:27 linux-6.6.y a91a6aa9253c 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan BUG: Address IPV6ADDR on device lo is missing its host route.
2026/09/30 22:22 linux-6.6.y 79643295eba1 38f7f0d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan BUG: Address IPV6ADDR on device lo is missing its host route.
2026/09/26 09:21 linux-6.6.y 79643295eba1 a3c7249d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan BUG: Address IPV6ADDR on device lo is missing its host route.
* Struck through repros no longer work on HEAD.