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[PATCH] fix segfault in fsck-cache

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Here is how to trigger it:

   echo blob 100 > .git/objects/00/ae4e8d3208e09f2cf7a38202a126f728cadb49

Then run fsck-cache. It will try to unpack after the header to calculate 
the hash, inflate returns total_out == 0 and memcpy() dies.

The patch below seems to work with ZLIB 1.1 and 1.2.

Signed-off-by: Andreas Gal <gal@uci.edu>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Andreas Gal 2005-04-24 14:04:13 -07:00 committed by Linus Torvalds
parent c5b423860d
commit da6abf5d9c
1 changed files with 2 additions and 0 deletions
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2
sha1_file.c
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@ -155,6 +155,8 @@ void * unpack_sha1_file(void *map, unsigned long mapsize, char *type, unsigned l
inflateInit(&stream);
ret = inflate(&stream, 0);
if (ret < Z_OK)
return NULL;
if (sscanf(buffer, "%10s %lu", type, size) != 2)
return NULL;