Thread (4 messages) flat view 4 messages, 4 authors, 5d ago

Re: [PATCH net] octeontx2-af: initialize lmac_bmap in rvu_mcs_set_lmac_bmap()

From: Jakub Kicinski <kuba@kernel.org>
Date: 2026-08-17 23:20:57
Also in: lkml

On Wed, 12 Aug 2026 08:07:30 +0200 Karl Mehltretter wrote:
rvu_mcs_set_lmac_bmap() declares lmac_bmap without initializing it and
only sets bits for valid lmacs with set_bit(), which ORs into the word
without clearing it first. Bits for invalid or skipped ports keep
whatever was on the stack, and the garbage is stored into
mcs->hw->lmac_bmap.

Initialize lmac_bmap to 0 so only valid lmacs are marked.

Found with Clang's -Wconditional-uninitialized.
Applied, thanks!
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help