Messages in this thread | | | Date | Mon, 11 Nov 2013 08:35:31 +0000 | From | "Jan Beulich" <> | Subject | Re: [PATCH] unlz4: always set an error return code on failures |
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>>> On 11.11.13 at 03:49, Kyungsik Lee <kyungsik.lee@lge.com> wrote: > Hello Jan, > > Thanks for the patch. > > On Fri, Nov 08, 2013 at 09:27:09AM +0000, Jan Beulich wrote: >> "ret", being set to -1 early on, gets cleared by the first invocation >> of lz4_decompress()/lz4_decompress_unknownoutputsize(), and hence >> subsequent failures wouldn't be noticed by the caller without setting >> it back to -1 right after those calls. >> >> Reported-by: Matthew Daley <mattjd@gmail.com> >> Signed-off-by: Jan Beulich <jbeulich@suse.com> >> Cc: Kyungsik Lee <kyungsik.lee@lge.com> >> Cc: Andrew Morton <akpm@linux-foundation.org> >> >> --- a/lib/decompress_unlz4.c >> +++ b/lib/decompress_unlz4.c >> @@ -141,6 +141,7 @@ STATIC inline int INIT unlz4(u8 *input, >> goto exit_2; >> } >> >> + ret = -1; >> if (flush && flush(outp, dest_len) != dest_len) >> goto exit_2; >> if (output) >> > What do you think of adding "ret2" for keeping "ret" error status > which is set by lz4_decompress*() like below.
I'd be fine with that too, but preferred to submit the smallest possible (read: one line) patch in this case.
Jan
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