diff options
| author | David Sterba <dsterba@suse.com> | 2016-11-07 13:58:51 +0100 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2016-11-09 13:47:35 +0100 |
| commit | 92847b5cd68d601b5ebadb74d17985b6421960bc (patch) | |
| tree | 7b0b53e082227a8b5f7a4f3fa78ec39b1226e87b /kernel-lib | |
| parent | 0bd0d9c062d1b02978161c356057122c865f5ad0 (diff) | |
btrfs-progs: crc32: use fallback implementation for unaligned buffers
ASAN reports that at some point the crc function gets an unaligned
buffer. It's the optimized intel version that casts char to ulong, the
buffer is the embedded filename in the directory items.
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'kernel-lib')
| -rw-r--r-- | kernel-lib/crc32c.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel-lib/crc32c.c b/kernel-lib/crc32c.c index dfa4e6c1..29fd01d4 100644 --- a/kernel-lib/crc32c.c +++ b/kernel-lib/crc32c.c @@ -218,5 +218,9 @@ u32 __crc32c_le(u32 crc, unsigned char const *data, size_t length) u32 crc32c_le(u32 crc, unsigned char const *data, size_t length) { + /* Use by-byte access for unaligned buffers */ + if ((unsigned long)data % sizeof(unsigned long)) + return __crc32c_le(crc, data, length); + return crc_function(crc, data, length); } |