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

Status: upstream: reported C repro on 2026/09/27 22:20
Reported-by: syzbot+5b7afba99be936567de1@syzkaller.appspotmail.com
First crash: 46d, last: 7h52m
▶ ▼ 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 10d 53d 0/2 upstream: reported C repro on 2026/09/21 01:01
linux-6.6 BUG: Address IPV6ADDR on device lo is missing its host route. -1 4 41d 48d 0/2 upstream: reported on 2026/09/26 09:21
android-6-1 BUG: Address IPV6ADDR on device lo is missing its host route. origin:upstream -1 syz, C 31 17d 49d 0/2 upstream: reported C repro on 2026/09/25 16:37
linux-5.15 BUG: Address IPV6ADDR on device lo is missing its host route. -1 syz, C 4 28d 70d 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 27 1d03h 47d 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.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.
IPv6: BUG: Address fc00:: on device lo is missing its host route.

Crashes (22):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/09/28 10:51 linux-6.1.y 1a8763b93150 a3c7249d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: Address IPV6ADDR on device lo is missing its host route.
2026/09/28 08:15 linux-6.1.y 1a8763b93150 a3c7249d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: Address IPV6ADDR on device lo is missing its host route.
2026/09/28 06:01 linux-6.1.y 1a8763b93150 a3c7249d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: Address IPV6ADDR on device lo is missing its host route.
2026/09/28 03:46 linux-6.1.y 1a8763b93150 a3c7249d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: Address IPV6ADDR on device lo is missing its host route.
2026/09/28 01:50 linux-6.1.y 1a8763b93150 a3c7249d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: Address IPV6ADDR on device lo is missing its host route.
2026/09/28 00:21 linux-6.1.y 1a8763b93150 a3c7249d .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: Address IPV6ADDR on device lo is missing its host route.
2026/11/13 09:39 linux-6.1.y c75b0cf0982c 26b2fee0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: Address IPV6ADDR on device lo is missing its host route.
2026/11/13 09:38 linux-6.1.y c75b0cf0982c 26b2fee0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: Address IPV6ADDR on device lo is missing its host route.
2026/11/12 19:39 linux-6.1.y c75b0cf0982c c0087d7f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: Address IPV6ADDR on device lo is missing its host route.
2026/11/11 15:53 linux-6.1.y c75b0cf0982c e56a968c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: Address IPV6ADDR on device lo is missing its host route.
2026/10/23 09:25 linux-6.1.y 79807e970724 d566bfda .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: Address IPV6ADDR on device lo is missing its host route.
2026/10/23 09:24 linux-6.1.y 79807e970724 d566bfda .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: Address IPV6ADDR on device lo is missing its host route.
2026/10/21 09:01 linux-6.1.y 79807e970724 61c200c7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: Address IPV6ADDR on device lo is missing its host route.
2026/10/16 04:24 linux-6.1.y 79807e970724 3f2522c6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: Address IPV6ADDR on device lo is missing its host route.
2026/10/01 00:19 linux-6.1.y 1a8763b93150 38f7f0d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: Address IPV6ADDR on device lo is missing its host route.
2026/10/01 00:17 linux-6.1.y 1a8763b93150 38f7f0d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: Address IPV6ADDR on device lo is missing its host route.
2026/09/30 08:36 linux-6.1.y 1a8763b93150 7808aef4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan BUG: Address IPV6ADDR on device lo is missing its host route.
2026/10/12 10:08 linux-6.1.y a500ba24937a 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: Address IPV6ADDR on device lo is missing its host route.
2026/10/10 07:58 linux-6.1.y a500ba24937a 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: Address IPV6ADDR on device lo is missing its host route.
2026/09/30 17:42 linux-6.1.y 1a8763b93150 7808aef4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: Address IPV6ADDR on device lo is missing its host route.
2026/09/30 17:41 linux-6.1.y 1a8763b93150 7808aef4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: Address IPV6ADDR on device lo is missing its host route.
2026/09/27 22:19 linux-6.1.y 1a8763b93150 a3c7249d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 BUG: Address IPV6ADDR on device lo is missing its host route.
* Struck through repros no longer work on HEAD.