Messages in this thread | | | Date | Mon, 28 Jun 2021 13:14:34 +0800 | From | kernel test robot <> | Subject | net/ceph/messenger_v1.c:1204:5: warning: stack frame size (2880) exceeds limit (2048) in function 'ceph_con_v1_try_read' |
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Hi Ilya,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 62fb9874f5da54fdb243003b386128037319b219 commit: 2f713615ddd9d805b6c5e79c52e0e11af99d2bf1 libceph: move msgr1 protocol implementation to its own file date: 7 months ago config: powerpc64-randconfig-r034-20210628 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 59558129276098d62046c8cda92240d292cbfb1c) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install powerpc64 cross compiling tool for clang build # apt-get install binutils-powerpc64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2f713615ddd9d805b6c5e79c52e0e11af99d2bf1 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 2f713615ddd9d805b6c5e79c52e0e11af99d2bf1 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc64
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
__do_insb ^ arch/powerpc/include/asm/io.h:541:56: note: expanded from macro '__do_insb' #define __do_insb(p, b, n) readsb((PCI_IO_ADDR)_IO_BASE+(p), (b), (n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from net/ceph/messenger_v1.c:8: In file included from include/net/sock.h:38: In file included from include/linux/hardirq.h:10: In file included from arch/powerpc/include/asm/hardirq.h:6: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:604: arch/powerpc/include/asm/io-defs.h:45:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(insw, (unsigned long p, void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:601:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:246:1: note: expanded from here __do_insw ^ arch/powerpc/include/asm/io.h:542:56: note: expanded from macro '__do_insw' #define __do_insw(p, b, n) readsw((PCI_IO_ADDR)_IO_BASE+(p), (b), (n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from net/ceph/messenger_v1.c:8: In file included from include/net/sock.h:38: In file included from include/linux/hardirq.h:10: In file included from arch/powerpc/include/asm/hardirq.h:6: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:604: arch/powerpc/include/asm/io-defs.h:47:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(insl, (unsigned long p, void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:601:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:250:1: note: expanded from here __do_insl ^ arch/powerpc/include/asm/io.h:543:56: note: expanded from macro '__do_insl' #define __do_insl(p, b, n) readsl((PCI_IO_ADDR)_IO_BASE+(p), (b), (n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from net/ceph/messenger_v1.c:8: In file included from include/net/sock.h:38: In file included from include/linux/hardirq.h:10: In file included from arch/powerpc/include/asm/hardirq.h:6: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:604: arch/powerpc/include/asm/io-defs.h:49:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(outsb, (unsigned long p, const void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:601:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:254:1: note: expanded from here __do_outsb ^ arch/powerpc/include/asm/io.h:544:58: note: expanded from macro '__do_outsb' #define __do_outsb(p, b, n) writesb((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from net/ceph/messenger_v1.c:8: In file included from include/net/sock.h:38: In file included from include/linux/hardirq.h:10: In file included from arch/powerpc/include/asm/hardirq.h:6: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:604: arch/powerpc/include/asm/io-defs.h:51:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(outsw, (unsigned long p, const void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:601:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:4:1: note: expanded from here __do_outsw ^ arch/powerpc/include/asm/io.h:545:58: note: expanded from macro '__do_outsw' #define __do_outsw(p, b, n) writesw((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) ~~~~~~~~~~~~~~~~~~~~~^ In file included from net/ceph/messenger_v1.c:8: In file included from include/net/sock.h:38: In file included from include/linux/hardirq.h:10: In file included from arch/powerpc/include/asm/hardirq.h:6: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/powerpc/include/asm/io.h:604: arch/powerpc/include/asm/io-defs.h:53:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] DEF_PCI_AC_NORET(outsl, (unsigned long p, const void *b, unsigned long c), ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/include/asm/io.h:601:3: note: expanded from macro 'DEF_PCI_AC_NORET' __do_##name al; \ ^~~~~~~~~~~~~~ <scratch space>:8:1: note: expanded from here __do_outsl ^ arch/powerpc/include/asm/io.h:546:58: note: expanded from macro '__do_outsl' #define __do_outsl(p, b, n) writesl((PCI_IO_ADDR)_IO_BASE+(p),(b),(n)) ~~~~~~~~~~~~~~~~~~~~~^ >> net/ceph/messenger_v1.c:1204:5: warning: stack frame size (2880) exceeds limit (2048) in function 'ceph_con_v1_try_read' [-Wframe-larger-than] int ceph_con_v1_try_read(struct ceph_connection *con) ^ 14 warnings generated.
vim +/ceph_con_v1_try_read +1204 net/ceph/messenger_v1.c
1200 1201 /* 1202 * Read what we can from the socket. 1203 */ > 1204 int ceph_con_v1_try_read(struct ceph_connection *con) 1205 { 1206 int ret = -1; 1207 1208 more: 1209 dout("try_read start %p state %d\n", con, con->state); 1210 if (con->state != CEPH_CON_S_V1_BANNER && 1211 con->state != CEPH_CON_S_V1_CONNECT_MSG && 1212 con->state != CEPH_CON_S_OPEN) 1213 return 0; 1214 1215 BUG_ON(!con->sock); 1216 1217 dout("try_read tag %d in_base_pos %d\n", (int)con->in_tag, 1218 con->in_base_pos); 1219 1220 if (con->state == CEPH_CON_S_V1_BANNER) { 1221 ret = read_partial_banner(con); 1222 if (ret <= 0) 1223 goto out; 1224 ret = process_banner(con); 1225 if (ret < 0) 1226 goto out; 1227 1228 con->state = CEPH_CON_S_V1_CONNECT_MSG; 1229 1230 /* 1231 * Received banner is good, exchange connection info. 1232 * Do not reset out_kvec, as sending our banner raced 1233 * with receiving peer banner after connect completed. 1234 */ 1235 ret = prepare_write_connect(con); 1236 if (ret < 0) 1237 goto out; 1238 prepare_read_connect(con); 1239 1240 /* Send connection info before awaiting response */ 1241 goto out; 1242 } 1243 1244 if (con->state == CEPH_CON_S_V1_CONNECT_MSG) { 1245 ret = read_partial_connect(con); 1246 if (ret <= 0) 1247 goto out; 1248 ret = process_connect(con); 1249 if (ret < 0) 1250 goto out; 1251 goto more; 1252 } 1253 1254 WARN_ON(con->state != CEPH_CON_S_OPEN); 1255 1256 if (con->in_base_pos < 0) { 1257 /* 1258 * skipping + discarding content. 1259 */ 1260 ret = ceph_tcp_recvmsg(con->sock, NULL, -con->in_base_pos); 1261 if (ret <= 0) 1262 goto out; 1263 dout("skipped %d / %d bytes\n", ret, -con->in_base_pos); 1264 con->in_base_pos += ret; 1265 if (con->in_base_pos) 1266 goto more; 1267 } 1268 if (con->in_tag == CEPH_MSGR_TAG_READY) { 1269 /* 1270 * what's next? 1271 */ 1272 ret = ceph_tcp_recvmsg(con->sock, &con->in_tag, 1); 1273 if (ret <= 0) 1274 goto out; 1275 dout("try_read got tag %d\n", (int)con->in_tag); 1276 switch (con->in_tag) { 1277 case CEPH_MSGR_TAG_MSG: 1278 prepare_read_message(con); 1279 break; 1280 case CEPH_MSGR_TAG_ACK: 1281 prepare_read_ack(con); 1282 break; 1283 case CEPH_MSGR_TAG_KEEPALIVE2_ACK: 1284 prepare_read_keepalive_ack(con); 1285 break; 1286 case CEPH_MSGR_TAG_CLOSE: 1287 ceph_con_close_socket(con); 1288 con->state = CEPH_CON_S_CLOSED; 1289 goto out; 1290 default: 1291 goto bad_tag; 1292 } 1293 } 1294 if (con->in_tag == CEPH_MSGR_TAG_MSG) { 1295 ret = read_partial_message(con); 1296 if (ret <= 0) { 1297 switch (ret) { 1298 case -EBADMSG: 1299 con->error_msg = "bad crc/signature"; 1300 fallthrough; 1301 case -EBADE: 1302 ret = -EIO; 1303 break; 1304 case -EIO: 1305 con->error_msg = "io error"; 1306 break; 1307 } 1308 goto out; 1309 } 1310 if (con->in_tag == CEPH_MSGR_TAG_READY) 1311 goto more; 1312 ceph_con_process_message(con); 1313 if (con->state == CEPH_CON_S_OPEN) 1314 prepare_read_tag(con); 1315 goto more; 1316 } 1317 if (con->in_tag == CEPH_MSGR_TAG_ACK || 1318 con->in_tag == CEPH_MSGR_TAG_SEQ) { 1319 /* 1320 * the final handshake seq exchange is semantically 1321 * equivalent to an ACK 1322 */ 1323 ret = read_partial_ack(con); 1324 if (ret <= 0) 1325 goto out; 1326 process_ack(con); 1327 goto more; 1328 } 1329 if (con->in_tag == CEPH_MSGR_TAG_KEEPALIVE2_ACK) { 1330 ret = read_keepalive_ack(con); 1331 if (ret <= 0) 1332 goto out; 1333 goto more; 1334 } 1335 1336 out: 1337 dout("try_read done on %p ret %d\n", con, ret); 1338 return ret; 1339 1340 bad_tag: 1341 pr_err("try_read bad con->in_tag = %d\n", (int)con->in_tag); 1342 con->error_msg = "protocol error, garbage tag"; 1343 ret = -1; 1344 goto out; 1345 } 1346
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