From: Thomas Bogendoerfer <tbogendoerfer@suse.de>
To: netdev@vger.kernel.org
Subject: BUG: KASAN: slab-out-of-bounds in ice_start_xmit+0x57cc/0x5ef0 [ice]
Date: Thu, 30 Apr 2026 12:17:15 +0200 [thread overview]
Message-ID: <20260430121715.2d306d73@samweis> (raw)
While working on another ice issue, I've noticed a KASAN splat, when using
xskxceiver test program. This is caused by
eth = (struct ethhdr *)skb_mac_header(skb);
...
eth->h_proto == htons(ETH_P_LLDP)) &&
in ice_xmit_frame_ring().
It would be easy to check for the unset mac_header condition in ice
driver (there are other drivers using skb_mac_header() in .ndo_start_xmit).
But since __dev_queue_xmit() is doing a skb_reset_mac_header(), shouldn't
__dev_direct_xmit() do the same ?
Thomas.
--
SUSE Software Solutions Germany GmbH__dev_queue_xmit
HRB 36809 (AG Nürnberg)
Geschäftsführer: Jochen Jaser, Andrew McDonald, Werner Knoblich
reply other threads:[~2026-04-30 10:17 UTC|newest]
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