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| author | Lorenzo Bianconi <lorenzo.bianconi@oss.qualcomm.com> | 2026-09-11 11:20:15 +0200 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-09-15 16:55:52 -0700 |
| commit | 15989abd74f16f44bf953d056b95f1d2fda9b0cd (patch) | |
| tree | 716bc8eaa6d036d009f63857d0e52de9ed54b931 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 433cfc302561bc7e23b1305e1779e0d83156cb61 (diff) | |
| download | linux-15989abd74f16f44bf953d056b95f1d2fda9b0cd.tar.gz linux-15989abd74f16f44bf953d056b95f1d2fda9b0cd.zip | |
net: stmmac: fix TSO header length truncation
stmmac_tso_xmit() stores the protocol header length returned by
stmmac_tso_header_size() in a u8. stmmac_tso_valid_packet() admits
headers up to 1023 bytes, so a header longer than 255 bytes wraps modulo
256 (486 becomes 230, 256 becomes 0).
A TCP over IPv6 socket carrying a few hundred bytes of sticky
destination/hop-by-hop options makes skb_tcp_all_headers() exceed 255
while staying below the 1023-byte limit, so such an skb reaches
stmmac_tso_xmit().
Widen proto_hdr_len to unsigned int, which is sufficient since the value
is bounded by the hardware limit, and adjust the debug print specifier
accordingly.
Fixes: 9edfa7dab811 ("net: stmmac: enable TSO for IPv6")
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@oss.qualcomm.com>
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Link: https://patch.msgid.link/20260911-stmmac-fix-header-length-v1-1-8fc103334327@oss.qualcomm.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions