Hoi,
A while ago we discussed a crash in IPv6 neighbor solicit if the
link-local address is missing (or deconfigured) on an interface.
The fix for this is https://gerrit.fd.io/r/c/vpp/+/46038
Pieter Meyer posted a minimal repro (see commit message in the Gerrit),
and confirmed the crash no longer appears after the patch (PS5 is the
narrow fix for the issue itself). Can the gerrit be merged? And also put
into the upcoming release ?
ip6-nd: fix crash in link-local target NS
Fix NS for link-local target crash (fib_index=~0) when interface
link-local FIB is absent, ip6_ll_fib_get() result used without ~0
check,
unlike the global-FIB path a few lines further in this file.
Reproduction, crashes master, does not crash with this change:
1. On a pg interface with a global address "disable ip6 interface pg0".
2. Inject a single unicast NS (src fe80::2, dst = the global address,
target fe80::1, hop limit 255).
(repro courtesy Pieter Meyer)
groet,
Pim
--
Pim van Pelt
PBVP1-RIPE - https://ipng.ch/
-=-=-=-=-=-=-=-=-=-=-=-
Links: You receive all messages sent to this group.
View/Reply Online (#27245): https://lists.fd.io/g/vpp-dev/message/27245
Mute This Topic: https://lists.fd.io/mt/121671152/21656
Group Owner: [email protected]
Unsubscribe: https://lists.fd.io/g/vpp-dev/leave/14379924/21656/631435203/xyzzy
[[email protected]]
-=-=-=-=-=-=-=-=-=-=-=-
