5.15-stable review patch. If anyone has any objections, please let me know.
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From: Tanya Agarwal tanyaagarwal25699@gmail.com
[ Upstream commit af324dc0e2b558678aec42260cce38be16cc77ca ]
The static code analysis tool "Coverity Scan" pointed the following implementation details out for further development considerations: CID 1309755: Unused value In sw842_compress: A value assigned to a variable is never used. (CWE-563) returned_value: Assigning value from add_repeat_template(p, repeat_count) to ret here, but that stored value is overwritten before it can be used.
Conclusion: Add error handling for the return value from an add_repeat_template() call.
Fixes: 2da572c959dd ("lib: add software 842 compression/decompression") Signed-off-by: Tanya Agarwal tanyaagarwal25699@gmail.com Signed-off-by: Herbert Xu herbert@gondor.apana.org.au Signed-off-by: Sasha Levin sashal@kernel.org --- lib/842/842_compress.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/lib/842/842_compress.c b/lib/842/842_compress.c index c02baa4168e16..055356508d97c 100644 --- a/lib/842/842_compress.c +++ b/lib/842/842_compress.c @@ -532,6 +532,8 @@ int sw842_compress(const u8 *in, unsigned int ilen, } if (repeat_count) { ret = add_repeat_template(p, repeat_count); + if (ret) + return ret; repeat_count = 0; if (next == last) /* reached max repeat bits */ goto repeat;