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-rw-r--r--fs/squashfs/block.c21
1 files changed, 4 insertions, 17 deletions
diff --git a/fs/squashfs/block.c b/fs/squashfs/block.c
index 321728f48f2d..2a7960310349 100644
--- a/fs/squashfs/block.c
+++ b/fs/squashfs/block.c
@@ -184,15 +184,7 @@ int squashfs_read_data(struct super_block *sb, void **buffer, u64 index,
184 offset = 0; 184 offset = 0;
185 } 185 }
186 186
187 if (msblk->stream.avail_out == 0) { 187 if (msblk->stream.avail_out == 0 && page < pages) {
188 if (page == pages) {
189 ERROR("zlib_inflate tried to "
190 "decompress too much data, "
191 "expected %d bytes. Zlib "
192 "data probably corrupt\n",
193 srclength);
194 goto release_mutex;
195 }
196 msblk->stream.next_out = buffer[page++]; 188 msblk->stream.next_out = buffer[page++];
197 msblk->stream.avail_out = PAGE_CACHE_SIZE; 189 msblk->stream.avail_out = PAGE_CACHE_SIZE;
198 } 190 }
@@ -209,25 +201,20 @@ int squashfs_read_data(struct super_block *sb, void **buffer, u64 index,
209 zlib_init = 1; 201 zlib_init = 1;
210 } 202 }
211 203
212 zlib_err = zlib_inflate(&msblk->stream, Z_NO_FLUSH); 204 zlib_err = zlib_inflate(&msblk->stream, Z_SYNC_FLUSH);
213 205
214 if (msblk->stream.avail_in == 0 && k < b) 206 if (msblk->stream.avail_in == 0 && k < b)
215 put_bh(bh[k++]); 207 put_bh(bh[k++]);
216 } while (zlib_err == Z_OK); 208 } while (zlib_err == Z_OK);
217 209
218 if (zlib_err != Z_STREAM_END) { 210 if (zlib_err != Z_STREAM_END) {
219 ERROR("zlib_inflate returned unexpected result" 211 ERROR("zlib_inflate error, data probably corrupt\n");
220 " 0x%x, srclength %d, avail_in %d,"
221 " avail_out %d\n", zlib_err, srclength,
222 msblk->stream.avail_in,
223 msblk->stream.avail_out);
224 goto release_mutex; 212 goto release_mutex;
225 } 213 }
226 214
227 zlib_err = zlib_inflateEnd(&msblk->stream); 215 zlib_err = zlib_inflateEnd(&msblk->stream);
228 if (zlib_err != Z_OK) { 216 if (zlib_err != Z_OK) {
229 ERROR("zlib_inflateEnd returned unexpected result 0x%x," 217 ERROR("zlib_inflate error, data probably corrupt\n");
230 " srclength %d\n", zlib_err, srclength);
231 goto release_mutex; 218 goto release_mutex;
232 } 219 }
233 length = msblk->stream.total_out; 220 length = msblk->stream.total_out;