tree: https://github.com/ceph/ceph-client.git binary_tracing head: 242b3aa593381c5ed2f425dbfb145bf7ca42e1fc commit: 8a1cb95e58001067ea33908f1762ca31d6f93b69 [2/4] ceph_san code config: arm64-randconfig-004-20250704 (https://download.01.org/0day-ci/archive/20250704/202507041628.HXpoOzaS-lkp@xxxxxxxxx/config) compiler: aarch64-linux-gcc (GCC) 10.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250704/202507041628.HXpoOzaS-lkp@xxxxxxxxx/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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202507041628.HXpoOzaS-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): net/ceph/ceph_san_logger.c: In function 'ceph_san_get_tls_ctx': >> net/ceph/ceph_san_logger.c:313:5: warning: 'strncpy' output may be truncated copying 15 bytes from a string of length 15 [-Wstringop-truncation] 313 | strncpy(ctx->comm, current->comm, TASK_COMM_LEN); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/strncpy +313 net/ceph/ceph_san_logger.c 264 265 static void ceph_san_tls_release_verbose(void *ptr) 266 { 267 struct ceph_san_tls_ctx *ctx = container_of(ptr, struct ceph_san_tls_ctx, release); 268 if (!ctx) { 269 pr_err("ceph_san_logger -- Callback : invalid TLS context pointer %d\n", current->pid); 270 return; 271 } 272 if (ctx->debug_poison != CEPH_SAN_CTX_POISON) { 273 pr_err("ceph_san_logger -- Callback : invalid TLS context id=%llu has invalid debug_poison value 0x%llx\n", 274 ctx->id, (unsigned long long)ctx->debug_poison); 275 BUG(); 276 } 277 if (atomic_read(&ctx->refcount) != 1) { 278 pr_err("ceph_san_logger -- Callback : invalid TLS context refcount %d for pid %d [%s]\n", 279 atomic_read(&ctx->refcount), ctx->pid, ctx->comm); 280 BUG(); 281 } 282 ceph_san_tls_release(ctx); 283 } 284 /** 285 * ceph_san_get_tls_ctx - Get or create TLS context for current task 286 * 287 * Returns pointer to TLS context or NULL on error 288 */ 289 struct ceph_san_tls_ctx *ceph_san_get_tls_ctx(void) 290 { 291 struct ceph_san_tls_ctx *ctx = get_tls_ctx(); /* Inline helper, gets container_of */ 292 293 if (ctx) { 294 if (!is_valid_active_ctx(ctx, "Existing TLS")) { 295 current->tls_ctx = NULL; /* Invalidate bad pointer */ 296 BUG(); 297 } 298 return ctx; 299 } 300 301 /* Create new context */ 302 pr_debug("ceph_san_logger: creating new TLS context for pid %d [%s]\n", 303 current->pid, current->comm); 304 305 ctx = get_new_ctx(); /* Get base context with refcount 0 */ 306 if (!ctx) 307 return NULL; 308 309 /* Set up TLS specific parts */ 310 current->tls_ctx = (void *)&ctx->release; 311 ctx->task = current; 312 ctx->pid = current->pid; > 313 strncpy(ctx->comm, current->comm, TASK_COMM_LEN); 314 ctx->comm[TASK_COMM_LEN - 1] = '\0'; /* Ensure null termination */ 315 316 /* Increment refcount from 0 to 1 */ 317 if (atomic_inc_return(&ctx->refcount) != 1) { 318 pr_err("BUG: Failed to set refcount=1 for new TLS context id=%llu (was %d before inc)\n", 319 ctx->id, atomic_read(&ctx->refcount) - 1); 320 current->tls_ctx = NULL; /* Don't leave partially set up context */ 321 BUG(); 322 } 323 324 pr_debug("ceph_san_logger: successfully created new TLS context id=%llu for pid %d [%s]\n", 325 ctx->id, ctx->pid, ctx->comm); 326 return ctx; 327 } 328 EXPORT_SYMBOL(ceph_san_get_tls_ctx); 329 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
