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

Status: upstream: reported C repro on 2026/09/25 16:37
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+d4574dae1ff5c40ed6a5@syzkaller.appspotmail.com
First crash: 6d04h, last: 6d04h
▶ ▼ Bug presence (2)
Date Name Commit Repro Result
2026/09/26 lts (merge base) 090666d3cc90 C [report] BUG: Address IPV6ADDR on device lo is missing its host route.
2026/09/26 upstream (ToT) 6812ce4e4379 C [report] BUG: Address IPV6ADDR on device lo is missing its host route.
▶ ▼ 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 12h19m 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 22h16m 5d11h 0/2 upstream: reported on 2026/09/26 09:21
linux-6.1 BUG: Address IPV6ADDR on device lo is missing its host route. -1 syz, C 12 20h19m 3d22h 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 1 27d 27d 0/3 upstream: reported on 2026/09/04 13:28
android-5-15 BUG: Address IPV6ADDR on device lo is missing its host route. -1 syz, C 1 4d19h 4d19h 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
2026/09/25 16:37 android14-6.1 3d4bd33f0b0b f281d9d2 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: Address IPV6ADDR on device lo is missing its host route.
* Struck through repros no longer work on HEAD.