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| author | Matteo Croce <mcroce@linux.microsoft.com> | 2020-07-07 05:37:36 +0300 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2020-07-07 05:42:31 +0300 |
| commit | fd49e03280e596e54edb93a91bc96170f8e97e4a (patch) | |
| tree | 5194bfae6b3457cc67ec0467528e4cd16912de84 /fs/pstore | |
| parent | 48778464bb7d346b47157d21ffde2af6b2d39110 (diff) | |
| download | linux-fd49e03280e596e54edb93a91bc96170f8e97e4a.tar.xz | |
pstore: Fix linking when crypto API disabled
When building a kernel with CONFIG_PSTORE=y and CONFIG_CRYPTO not set,
a build error happens:
ld: fs/pstore/platform.o: in function `pstore_dump':
platform.c:(.text+0x3f9): undefined reference to `crypto_comp_compress'
ld: fs/pstore/platform.o: in function `pstore_get_backend_records':
platform.c:(.text+0x784): undefined reference to `crypto_comp_decompress'
This because some pstore code uses crypto_comp_(de)compress regardless
of the CONFIG_CRYPTO status. Fix it by wrapping the (de)compress usage
by IS_ENABLED(CONFIG_PSTORE_COMPRESS)
Signed-off-by: Matteo Croce <mcroce@linux.microsoft.com>
Link: https://lore.kernel.org/lkml/20200706234045.9516-1-mcroce@linux.microsoft.com
Fixes: cb3bee0369bc ("pstore: Use crypto compress API")
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'fs/pstore')
| -rw-r--r-- | fs/pstore/platform.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c index a9e297eefdff..36714df37d5d 100644 --- a/fs/pstore/platform.c +++ b/fs/pstore/platform.c @@ -269,6 +269,9 @@ static int pstore_compress(const void *in, void *out, { int ret; + if (!IS_ENABLED(CONFIG_PSTORE_COMPRESSION)) + return -EINVAL; + ret = crypto_comp_compress(tfm, in, inlen, out, &outlen); if (ret) { pr_err("crypto_comp_compress failed, ret = %d!\n", ret); @@ -668,7 +671,7 @@ static void decompress_record(struct pstore_record *record) int unzipped_len; char *unzipped, *workspace; - if (!record->compressed) + if (!IS_ENABLED(CONFIG_PSTORE_COMPRESSION) || !record->compressed) return; /* Only PSTORE_TYPE_DMESG support compression. */ |