27 Feb
2025
27 Feb
'25
4:31 p.m.
On 2025-02-26 10:39:04 [+0100], Ricardo Cañuelo Navarro wrote:
Both patches needed some manual work in order to be applied on stable, mostly related to changes in the context lines:
Did the same rebase and came to the same set of patches so Reviewed-by: Sebastian Andrzej Siewior bigeasy@linutronix.de
Based on KASAN report Ricardo provided it is the dst->dev dereference in dev_map_enqueue(). This originates from bpf_redirect_info::tgt_value which is a per-CPU variable. It is assigned in __bpf_xdp_redirect_map(). Since it is claimed that this patches fix it, the bot must have found a way to share the per-CPU data with another instance/ thread. Haven't figured out how…
Signed-off-by: Ricardo Cañuelo Navarro rcn@igalia.com
Sebastian