apparmor: make sure the decompression ctx is promperly initialized
The decompress ctx was not properly initialized when reading raw profile data back to userspace. Reported-by: kernel test robot <lkp@intel.com> Fixes: 52ccc20c652b ("apparmor: use zstd compression for profile data") Signed-off-by: John Johansen <john.johansen@canonical.com>
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@ -1327,7 +1327,11 @@ static int decompress_zstd(char *src, size_t slen, char *dst, size_t dlen)
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ret = -ENOMEM;
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goto cleanup;
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}
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ctx = zstd_init_dctx(wksp, wksp_len);
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if (ctx == NULL) {
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ret = -ENOMEM;
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goto cleanup;
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}
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out_len = zstd_decompress_dctx(ctx, dst, dlen, src, slen);
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if (zstd_is_error(out_len)) {
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ret = -EINVAL;
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