Jiri Daněk created DISPATCH-2290: ------------------------------------ Summary: Use of uninitialized data Key: DISPATCH-2290 URL: https://issues.apache.org/jira/browse/DISPATCH-2290 Project: Qpid Dispatch Issue Type: Bug Affects Versions: 1.18.0 Reporter: Jiri Daněk
https://github.com/jiridanek/qpid-dispatch/runs/4253734843?check_suite_focus=true#step:28:10895 {noformat} ==2028==WARNING: MemorySanitizer: use-of-uninitialized-value #0 0x56b3c3 in qd_dispatch /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/dispatch.c:99:20 #1 0x4c2346 in main_process /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/router/src/main.c:92:16 #2 0x4c05d8 in main /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/router/src/main.c:369:9 #3 0x7f398fd39b74 in __libc_start_main (/lib64/libc.so.6+0x27b74) #4 0x43fdbd in _start (/__w/qpid-dispatch/qpid-dispatch/qpid-dispatch/build/router/qdrouterd+0x43fdbd) Uninitialized value was created by an allocation of 'st' in the stack frame of function 'qd_dispatch' #0 0x56ab90 in qd_dispatch /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/dispatch.c:77 SUMMARY: MemorySanitizer: use-of-uninitialized-value /home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/dispatch.c:99:20 in qd_dispatch {noformat} {code} struct stat st; if (stat(python_pkgdir, &st)) { qd_error_errno(errno, "Cannot find Python library path '%s'", python_pkgdir); return NULL; } else if (!S_ISDIR(st.st_mode)) { qd_error(QD_ERROR_RUNTIME, "Python library path '%s' not a directory", python_pkgdir); return NULL; } {code} The problem looks obvious. If {{stat}} function fails, dispatch tries to examine {{st.st_mode}}. Looks like a trivial coding mistake. This issue highlights that we don't currently regularly run undefined-memory checker with qdrouterd. -- This message was sent by Atlassian Jira (v8.20.1#820001) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@qpid.apache.org For additional commands, e-mail: dev-h...@qpid.apache.org