Bug 83761
| Summary: | idutils3.2 is causing a strtok coredump in libc686 2.2.93 | ||
|---|---|---|---|
| Product: | [Retired] Red Hat Linux | Reporter: | Honisoit Q. Malypense <honisoitqmalypense> |
| Component: | glibc | Assignee: | Jakub Jelinek <jakub> |
| Status: | CLOSED NOTABUG | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 8.0 | CC: | fweimer |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i686 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2004-10-03 19:49:47 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Wild guess. Isn't that "." passed to vectorize_string a string literal (ie. read-only data)? No feedback, plus the hypothesis that "." is in .rodata sounds very likely (0x804edfb is not really too far away from 0x804d8e0 which certainly is in r/o segment). |
From Bugzilla Helper: User-Agent: Mozilla/5.0 Galeon/1.2.6 (X11; Linux i686; U;) Gecko/20020830 Description of problem: I seem to be seeing a problem in strtok that is causing id-utils3.2 to fail. I downloaded the id-utils3.2 source on my redhat 8 machine, ran ./configure, then make install. Everything seems ok, but when I run mkid I get a segfault right away. I seem to be dying in strtok during the processing of parse_file_name #0 vectorize_string (string=0x804edfb ".", delimiter_class=0x804f147 "/") at walker.c:659 #1 0x0804d8e0 in parse_file_name (file_name=0x804edfb ".", relative_dir_link=0x8059900) at walker.c:534 #2 0x08049305 in main (argc=0, argv=0x8050038) at mkid.c:275 #3 0x420158d4 in __libc_start_main () from /lib/i686/libc.so.6 (gdb) l 654 vectorize_string (char *string, char *delimiter_class) 655 { 656 char **vector_0 = MALLOC (char *, 2 + strlen (string) / 2); 657 char **vector = vector_0; 658 659 *vector = strtok (string, delimiter_class); 660 while (*vector) 661 *++vector = strtok (0, delimiter_class); 662 return REALLOC (vector_0, char *, ++vector - vector_0); 663 } (gdb) p string $1 = 0x804edfb "." (gdb) p delimiter_class $2 = 0x804f147 "/" (gdb) n Program received signal SIGSEGV, Segmentation fault. 0x4207af65 in strtok () from /lib/i686/libc.so.6 [root@messugah dublin]# ldd /usr/local/bin/mkid libc.so.6 => /lib/i686/libc.so.6 (0x42000000) /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x40000000) file /lib/i686/libc.so.6 /lib/i686/libc.so.6: symbolic link to libc-2.2.93.so According to the docs this looks like the right way to use strtok. Peter Version-Release number of selected component (if applicable): How reproducible: Always Steps to Reproduce: 1. download id-utils3.2 2.build 3.try running mkid Actual Results: SEGV Expected Results: A big lovely ID file should have been created Additional info: