retitle 626001 [powerpc] sigsegv in memset called by calloc tags 626001 = moreinfo quit
Hi, Jörg Sommer wrote: > last night, grep was killed by SIGSEG. It was run by a cron job and I > can't reproduce the error. But I've a coredump. What version of grep do you use? I don't know of anything like debug.debian.net for powerpc which would make it easy to get a full backtrace, (though it should be possible to get with sufficient interest and time) unfortunately. Also, do you have the cron job and the /var/lib/rkhunter/db/i18n/en file from the time of failure? Can we take a look at them? [...] > Core was generated by `grep ^ROOTKIT_FILES_DIRS_FILE: > /var/lib/rkhunter/db/i18n/en'. [...] > #0 memset () at ../sysdeps/powerpc/powerpc32/memset.S:100 > No locals. > #1 0x0fed241c in __libc_calloc (n=<value optimized out>, elem_size=<value > optimized out>) at malloc.c:4123 > av = 0xffc9268 > oldtop = 0x103fcd18 > bytes = 4 Looks like calloc is being called for a 4-byte allocation. Usually for such small allocations calloc handles the clearing itself, so that information might help to narrow things down. Just to check: are there any MALLOC_* or LD_* environment variables set in your cron jobs' environment? (I'm asking probably stupid questions just to get basic information to trace what happened, nothing else.) [...] > #2 0x10018700 in ?? () > No symbol table info available. > #3 0x1000f260 in ?? () > No symbol table info available. [...] > Dump of assembler code for function memset: I'd also be interested in disassembly for frame 2 or 3, so we can get some idea of what grep was doing. Thanks, Jonathan -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/20110507220644.GB7158@elie
