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

Status: upstream: reported on 2026/09/04 13:28
Reported-by: syzbot+08a669c93f7bf94a5a4a@syzkaller.appspotmail.com
First crash: 27d, last: 27d
▶ ▼ 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 76 13h50m 10d 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 2 23h47m 5d12h 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 1 6d05h 6d05h 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 12 21h50m 3d23h 0/3 upstream: reported C repro on 2026/09/27 22:20
android-5-15 BUG: Address IPV6ADDR on device lo is missing its host route. -1 syz, C 1 4d21h 4d21h 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 (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/09/04 13:28 linux-5.15.y 0996e0926f6b f65209a4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan BUG: Address IPV6ADDR on device lo is missing its host route.
* Struck through repros no longer work on HEAD.