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: 1d15h, last: 1d15h
▶ ▼ 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 61 21m 7d00h 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 1 2d08h 2d08h 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 2 40m 2h41m 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 23d 23d 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 1d00h 1d00h 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
2026/09/26 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.