From: kernel test robot <lkp@intel.com>
To: cros-kernel-buildreports@googlegroups.com
Cc: oe-kbuild-all@lists.linux.dev
Subject: [android-common:mirror-chromeos-5.10-arcvm 6/6] fs/erofs/decompressor_lzma.c:266:12: error: implicit declaration of function 'xz_dec_microlzma_run'
Date: Wed, 04 Mar 2026 13:09:11 +0800 [thread overview]
Message-ID: <202603041345.ew47dBSR-lkp@intel.com> (raw)
Hi Gao,
FYI, the error/warning still remains.
tree: https://android.googlesource.com/kernel/common mirror-chromeos-5.10-arcvm
head: 8426c769398ef6f4ac3f61df3f3ec10bd11b0e50
commit: ede603374aab4bb8a612fd3c1c84ceef11435fa1 [6/6] FROMGIT: erofs: lzma compression support
config: x86_64-allmodconfig (https://download.01.org/0day-ci/archive/20260304/202603041345.ew47dBSR-lkp@intel.com/config)
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 9a109fbb6e184ec9bcce10615949f598f4c974a9)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260304/202603041345.ew47dBSR-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202603041345.ew47dBSR-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from <built-in>:2:
In file included from include/linux/compiler_types.h:69:
include/linux/compiler-clang.h:34:9: warning: '__SANITIZE_ADDRESS__' macro redefined [-Wmacro-redefined]
34 | #define __SANITIZE_ADDRESS__
| ^
<built-in>:353:9: note: previous definition is here
353 | #define __SANITIZE_ADDRESS__ 1
| ^
fs/erofs/decompressor_lzma.c:42:5: error: implicit declaration of function 'xz_dec_microlzma_end' [-Werror,-Wimplicit-function-declaration]
42 | xz_dec_microlzma_end(strm->state);
| ^
fs/erofs/decompressor_lzma.c:135:4: error: implicit declaration of function 'xz_dec_microlzma_end' [-Werror,-Wimplicit-function-declaration]
135 | xz_dec_microlzma_end(strm->state);
| ^
fs/erofs/decompressor_lzma.c:136:17: error: implicit declaration of function 'xz_dec_microlzma_alloc' [-Werror,-Wimplicit-function-declaration]
136 | strm->state = xz_dec_microlzma_alloc(XZ_PREALLOC, dict_size);
| ^
fs/erofs/decompressor_lzma.c:136:15: error: incompatible integer to pointer conversion assigning to 'struct xz_dec_microlzma *' from 'int' [-Wint-conversion]
136 | strm->state = xz_dec_microlzma_alloc(XZ_PREALLOC, dict_size);
| ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fs/erofs/decompressor_lzma.c:193:2: error: implicit declaration of function 'xz_dec_microlzma_reset' [-Werror,-Wimplicit-function-declaration]
193 | xz_dec_microlzma_reset(strm->state, inlen, outlen,
| ^
>> fs/erofs/decompressor_lzma.c:266:12: error: implicit declaration of function 'xz_dec_microlzma_run' [-Werror,-Wimplicit-function-declaration]
266 | xz_err = xz_dec_microlzma_run(strm->state, &strm->buf);
| ^
1 warning and 6 errors generated.
vim +/xz_dec_microlzma_run +266 fs/erofs/decompressor_lzma.c
151
152 int z_erofs_lzma_decompress(struct z_erofs_decompress_req *rq,
153 struct list_head *pagepool)
154 {
155 const unsigned int nrpages_out =
156 PAGE_ALIGN(rq->pageofs_out + rq->outputsize) >> PAGE_SHIFT;
157 const unsigned int nrpages_in =
158 PAGE_ALIGN(rq->inputsize) >> PAGE_SHIFT;
159 unsigned int inputmargin, inlen, outlen, pageofs;
160 struct z_erofs_lzma *strm;
161 u8 *kin;
162 bool bounced = false;
163 int no, ni, j, err = 0;
164
165 /* 1. get the exact LZMA compressed size */
166 kin = kmap(*rq->in);
167 inputmargin = 0;
168 while (!kin[inputmargin & ~PAGE_MASK])
169 if (!(++inputmargin & ~PAGE_MASK))
170 break;
171
172 if (inputmargin >= PAGE_SIZE) {
173 kunmap(*rq->in);
174 return -EFSCORRUPTED;
175 }
176 rq->inputsize -= inputmargin;
177
178 /* 2. get an available lzma context */
179 again:
180 spin_lock(&z_erofs_lzma_lock);
181 strm = z_erofs_lzma_head;
182 if (!strm) {
183 spin_unlock(&z_erofs_lzma_lock);
184 wait_event(z_erofs_lzma_wq, READ_ONCE(z_erofs_lzma_head));
185 goto again;
186 }
187 z_erofs_lzma_head = strm->next;
188 spin_unlock(&z_erofs_lzma_lock);
189
190 /* 3. multi-call decompress */
191 inlen = rq->inputsize;
192 outlen = rq->outputsize;
193 xz_dec_microlzma_reset(strm->state, inlen, outlen,
194 !rq->partial_decoding);
195 pageofs = rq->pageofs_out;
196 strm->buf.in = kin + inputmargin;
197 strm->buf.in_pos = 0;
198 strm->buf.in_size = min_t(u32, inlen, PAGE_SIZE - inputmargin);
199 inlen -= strm->buf.in_size;
200 strm->buf.out = NULL;
201 strm->buf.out_pos = 0;
202 strm->buf.out_size = 0;
203
204 for (ni = 0, no = -1;;) {
205 enum xz_ret xz_err;
206
207 if (strm->buf.out_pos == strm->buf.out_size) {
208 if (strm->buf.out) {
209 kunmap(rq->out[no]);
210 strm->buf.out = NULL;
211 }
212
213 if (++no >= nrpages_out || !outlen) {
214 erofs_err(rq->sb, "decompressed buf out of bound");
215 err = -EFSCORRUPTED;
216 break;
217 }
218 strm->buf.out_pos = 0;
219 strm->buf.out_size = min_t(u32, outlen,
220 PAGE_SIZE - pageofs);
221 outlen -= strm->buf.out_size;
222 if (rq->out[no])
223 strm->buf.out = kmap(rq->out[no]) + pageofs;
224 pageofs = 0;
225 } else if (strm->buf.in_pos == strm->buf.in_size) {
226 kunmap(rq->in[ni]);
227
228 if (++ni >= nrpages_in || !inlen) {
229 erofs_err(rq->sb, "compressed buf out of bound");
230 err = -EFSCORRUPTED;
231 break;
232 }
233 strm->buf.in_pos = 0;
234 strm->buf.in_size = min_t(u32, inlen, PAGE_SIZE);
235 inlen -= strm->buf.in_size;
236 kin = kmap(rq->in[ni]);
237 strm->buf.in = kin;
238 bounced = false;
239 }
240
241 /*
242 * Handle overlapping: Use bounced buffer if the compressed
243 * data is under processing; Otherwise, Use short-lived pages
244 * from the on-stack pagepool where pages share with the same
245 * request.
246 */
247 if (!bounced && rq->out[no] == rq->in[ni]) {
248 memcpy(strm->bounce, strm->buf.in, strm->buf.in_size);
249 strm->buf.in = strm->bounce;
250 bounced = true;
251 }
252 for (j = ni + 1; j < nrpages_in; ++j) {
253 struct page *tmppage;
254
255 if (rq->out[no] != rq->in[j])
256 continue;
257
258 DBG_BUGON(erofs_page_is_managed(EROFS_SB(rq->sb),
259 rq->in[j]));
260 tmppage = erofs_allocpage(pagepool,
261 GFP_KERNEL | __GFP_NOFAIL);
262 set_page_private(tmppage, Z_EROFS_SHORTLIVED_PAGE);
263 copy_highpage(tmppage, rq->in[j]);
264 rq->in[j] = tmppage;
265 }
> 266 xz_err = xz_dec_microlzma_run(strm->state, &strm->buf);
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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