tags 273051 - moreinfo forwarded 273051 http://sourceware.org/bugzilla/show_bug.cgi?id=2314 found 273051 eglibc/2.11.2-6 clone 273051 -1 retitle -1 suppression: nss_parse_service_list() reassign -1 valgrind 1:3.6.0~svn11254 severity -1 wishlist notforwarded -1 tags -1 + upstream quit
Chaskiel M Grundman wrote: > I think this is a __libc_freeres problem, since if I run valgrind > with --run-libc-freeres=no, the relevant blocks are reported as > being still reachable (in fact, no leaks are reported at all, all > allocated blocks are reported as still reachable.) [...] > (http://sourceware.org/bugzilla/show_bug.cgi?id=2314 Thanks! Reproducing this is pretty easy. In a stock experimental system: $ cat test.c #include <unistd.h> #include <sys/types.h> #include <pwd.h> #include <stdio.h> int main(void) { struct passwd *pw = getpwuid(getuid()); if (!pw) return 1; printf("Hello, %s!\n", pw->pw_gecos); return 0; } $ gcc -g -o test test.c $ valgrind --leak-check=yes --gen-suppressions=all ./test [...] HEAP SUMMARY: in use at exit: 160 bytes in 11 blocks total heap usage: 66 allocs, 55 frees, 6,430 bytes allocated 160 (40 direct, 120 indirect) bytes in 1 blocks are definitely lost in loss record 11 of 11 at 0x4023F50: malloc (vg_replace_malloc.c:236) by 0x4110313: nss_parse_service_list (nsswitch.c:622) [...] { <insert_a_suppression_name_here> Memcheck:Leak fun:malloc fun:nss_parse_service_list fun:__nss_database_lookup obj:* obj:* fun:getpwuid_r@@GLIBC_2.1.2 fun:getpwuid fun:main } [...] $ /lib/libc.so.6 | head -1 GNU C Library (Debian EGLIBC 2.11.2-6) stable release version 2.11.2, by Roland McGrath et al. As Andreas Köhler explains on the upstream bug tracker: > I think the memory is leaked in > nis/nis_compat/compat-{grp,initgroups,pwd,spwd}.c. All of them contain static > service_user *ni, which is initialized by init_nss_interface() -> > __nss_database_lookup ("group_compat", NULL, "nis", &ni). > This memory does not seem to be freed by __libc_freeres(). valgrind developers: would it be possible to work around this this for now to glibc-2.x.supp? -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
