On Sat, Apr 27, 2013 at 11:42 PM, Kimmo Paasiala <[email protected]> wrote: > On Sat, Apr 27, 2013 at 10:05 PM, Wojciech A. Koszek > <[email protected]> wrote: >> On Sat, Apr 27, 2013 at 06:54:11PM +0300, Kimmo Paasiala wrote: >>> I'm getting a core dump on 'config -x /boot/kernel/kernel' on 9.1-RELEASE >>> i386. >>> >>> Assertion failed: (r != '\0' && ("Char present in the configuration " >>> "string mustn't be equal to 0")), function kernconfdump, file >>> /usr/src/usr.sbin/config/main.c, line 710. >>> >>> I have double checked that my config file is sane and does not have >>> any funny characters anywhere. >>> >>> The system is i386 9.1-RELEASE r249856. The world and kernel are built >>> with clang and I'm suspecting that the use of clang has something to >>> do with this segfault. >>> >>> Looking at the kernel files I can see one very obvious difference. >>> This is the 'elfdump -c kernel | grep -A 8 kern_conf' output (what >>> config -x seems to use for finding out the config file from the kernel >>> image) for the GENERIC kernel from the stock installation: >>> >>> sh_name: kern_conf >>> sh_type: SHT_PROGBITS >>> sh_flags: SHF_ALLOC >>> sh_addr: 0xc1039f80 >>> sh_offset: 12820352 >>> sh_size: 3771 >>> sh_link: 0 >>> sh_info: 0 >>> sh_addralign: 32 >>> >>> And this is from the kernel I have built myself using clang and a >>> custom config file: >>> >>> sh_name: kern_conf >>> sh_type: SHT_PROGBITS >>> sh_flags: SHF_ALLOC >>> sh_addr: 0xc09aee9c >>> sh_offset: 5959324 >>> sh_size: 1994 >>> sh_link: 0 >>> sh_info: 0 >>> sh_addralign: 1 >>> >>> The align field looks suspicious, config -x seems to use it to check >>> for padding but to me it looks like the logic may not work if the >>> alignment is 1. >>> >>> This the relevant bit from main.c of config(8) >>> >> >> Kimmo, >> >> Lets keep discussion on hackers@ only. I do agree with you that config(8) >> internal implementation might have its issues. >> >> Can you make your kernel configuration file, faulty kernel image and exact >> build instructions available to me? >> >> -- >> Wojciech A. Koszek >> [email protected] >> http://FreeBSD.czest.pl/~wkoszek/ > > The kernel config file: > > http://pastebin.com/j0J9NPCi > > My /etc/make.conf: > > http://pastebin.com/HYudWCA9 > > And /etc/src.conf: > > http://pastebin.com/ZAKq6ABT > > I'll see how I can make the kernel image available. > > -Kimmo
The kernel file: https://www.dropbox.com/s/07mjk6j4ditbl9r/kernel -Kimmo _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[email protected]"
