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dircache: Fix a NULL pointer dereference

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if idx == 0, get_idx_dcvolp() will return NULL.

Change-Id: I4eafa71bb1f77ef8c865570bf8f124cdd9326d3e
This commit is contained in:
Solomon Peachy 2020-10-27 21:57:40 -04:00
parent 7dbfda6c55
commit a5a19a3370
1 changed files with 2 additions and 1 deletions
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3
firmware/common/dircache.c
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@ -2612,7 +2612,8 @@ static dc_serial_t get_file_serialhash(const struct dircache_file *dcfilep)
idx = ce->up;
}
h = dc_hash_serialnum(get_idx_dcvolp(idx)->serialnum, h);
if (idx < 0)
h = dc_hash_serialnum(get_idx_dcvolp(idx)->serialnum, h);
return h;
}