segfaults on amd64
Robert Millan
rmh at aybabtu.com
Sat Feb 25 12:19:54 UTC 2006
On Sat, Feb 25, 2006 at 09:39:19AM +0100, Petr Salinger wrote:
> Hi!
>
> > I made a 64 bit glibc build and it seems to have some trouble:
>
> Please could you:
>
> - add headers/prototypes for printf, exit
This revealed some breakage in my headers due to a mistake during manual install
and patching. I fixed it, but it isn't related to this bug.
> - try it under ktrace
Quite interesting, with ktrace it gets SIGILL instead of SIGSEV.
(exit is a program that just calls exit function)
76573 ktrace RET ktrace 0
76573 ktrace CALL execve(0x7fffffffe9ef,0x7fffffffe828,0x7fffffffe838)
76573 ktrace NAMI "./exit"
76573 exit RET execve 0
76573 exit CALL break(0x574088)
76573 exit RET break 0
76573 exit CALL sysarch(0x81,0x7fffffffe7a0)
76573 exit RET sysarch 0
76573 exit CALL geteuid
76573 exit RET geteuid 1001/0x3e9
76573 exit CALL getuid
76573 exit RET getuid 1001/0x3e9
76573 exit CALL getegid
76573 exit RET getegid 1001/0x3e9
76573 exit CALL getgid
76573 exit RET getgid 1001/0x3e9
76573 exit CALL __sysctl(0x7fffffffe730,0x2,0x572f88,0x7fffffffe728,0,0)
76573 exit RET __sysctl 0
76573 exit CALL break(0x595088)
76573 exit RET break 0
76573 exit CALL break(0x596000)
76573 exit RET break 0
76573 exit PSIG SIGILL SIG_DFL
76573 exit NAMI "exit.core"
I wonder where is the code doing all this. Suposedly the fault is after the
malloc() that brings in these brk()s ?
I'm using binutils 2.16.1 and gcc 4.0.2 btw.
> - try "make -k check" in glibc build
I need to fix a bug in binutils for that to work. Will send the info later.
--
Robert Millan
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