segfaults on amd64
Robert Millan
rmh at aybabtu.com
Sun Feb 26 17:34:23 UTC 2006
On Sun, Feb 26, 2006 at 03:12:03PM +0100, Petr Salinger wrote:
> Hello Robert,
>
> just guess, could you please test attached file instead of standard
> sysdeps/x86_64/elf/start.S ?
Segfault again, also dependant on argv[0] length. This time the backtrace is
a bit different though, see attached logs.
--
Robert Millan
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[GDB will not be able to debug user-mode threads: /gnu/lib/libthread_db.so: Undefined symbol "ps_pdwrite"]
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This GDB was configured as "amd64-marcel-freebsd"...
(gdb) r
Starting program: /tmp/test
Program received signal SIGSEGV, Segmentation fault.
fixup (l=0x8006179e8, reloc_offset=Variable "reloc_offset" is not available.
) at dl-machine.h:347
347 dl-machine.h: No such file or directory.
in dl-machine.h
(gdb) bt
#0 fixup (l=0x8006179e8, reloc_offset=Variable "reloc_offset" is not available.
) at dl-machine.h:347
#1 0x000000080050a602 in _dl_runtime_resolve () at dl-runtime.c:136
#2 0x000000000040040d in _start () at ../sysdeps/x86_64/elf/start.S:114
#3 0x00000008006179e8 in _r_debug ()
#4 0x00000008006179c0 in rtld_errno () from /lib64/ld-kfreebsd-x86-64.so.1
#5 0x000000080051462d in dots.6572 () from /lib64/ld-kfreebsd-x86-64.so.1
#6 0x0000000000500708 in __JCR_LIST__ ()
#7 0x0000000800517348 in ?? ()
[...]
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55829 ktrace RET ktrace 0
55829 ktrace CALL execve(0x7fffffffe9d7,0x7fffffffe808,0x7fffffffe818)
55829 ktrace NAMI "./test"
55829 ktrace NAMI "/lib64/ld-kfreebsd-x86-64.so.1"
55829 test RET execve 0
55829 test CALL getuid
55829 test RET getuid 1001/0x3e9
55829 test CALL geteuid
55829 test RET geteuid 1001/0x3e9
55829 test CALL getgid
55829 test RET getgid 1001/0x3e9
55829 test CALL getegid
55829 test RET getegid 1001/0x3e9
55829 test CALL break(0x800618000)
55829 test RET break -1 errno 12 Cannot allocate memory
55829 test CALL mmap(0,0x1000,0x3,0x1002,0xffffffff,0,0)
55829 test RET mmap 5337088/0x800517000
55829 test CALL access(0x800511f50,0x4)
55829 test NAMI "/etc/ld.so.preload"
55829 test RET access -1 errno 2 No such file or directory
55829 test CALL open(0x7fffffffdfd0,0,0)
55829 test NAMI "/gnu/lib/tls/libc.so.0.1"
55829 test RET open -1 errno 2 No such file or directory
55829 test CALL stat(0x7fffffffdfd0,0x7fffffffdf38)
55829 test NAMI "/gnu/lib/tls"
55829 test RET stat -1 errno 2 No such file or directory
55829 test CALL open(0x7fffffffdfd0,0,0)
55829 test NAMI "/gnu/lib/libc.so.0.1"
55829 test RET open 3
55829 test CALL read(0x3,0x7fffffffe170,0x280)
55829 test GIO fd 3 read 640 bytes
0x0000 7f45 4c46 0201 0100 0000 0000 0000 0000 0300 3e00 0100 0000 20d0 0100 0000 0000 4000 |.ELF..............>..... ....... at .|
0x0022 0000 0000 0000 f80a 8000 0000 0000 0000 0000 4000 3800 0a00 4000 5c00 5900 0600 0000 |.................. at .8...@.\.Y.....|
0x0044 0500 0000 4000 0000 0000 0000 4000 0000 0000 0000 4000 0000 0000 0000 3002 0000 0000 |.... at .......@....... at .......0.....|
0x0066 0000 3002 0000 0000 0000 0800 0000 0000 0000 0300 0000 0400 0000 400e 1000 0000 0000 |..0....................... at .......|
0x0088 400e 1000 0000 0000 400e 1000 0000 0000 2100 0000 0000 0000 2100 0000 0000 0000 2000 |@....... at .......!.......!....... .|
0x00aa 0000 0000 0000 0100 0000 0500 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 |..................................|
0x00cc 0000 0000 808a 1100 0000 0000 808a 1100 0000 0000 0000 1000 0000 0000 0100 0000 0600 |..................................|
0x00ee 0000 d88b 1100 0000 0000 d88b 2100 0000 0000 d88b 2100 0000 0000 0852 0000 0000 0000 |............!.......!......R......|
0x0110 1094 0000 0000 0000 0000 1000 0000 0000 0200 0000 0600 0000 60ba 1100 0000 0000 60ba |........................`.......`.|
0x0132 2100 0000 0000 60ba 2100 0000 0000 d001 0000 0000 0000 d001 0000 0000 0000 0800 0000 |!.....`.!.........................|
0x0154 0000 0000 0400 0000 0400 0000 7002 0000 0000 0000 7002 0000 0000 0000 7002 0000 0000 |............p.......p.......p.....|
0x0176 0000 2000 0000 0000 0000 2000 0000 0000 0000 0400 0000 0000 0000 0700 0000 0400 0000 |.. ....... .......................|
0x0198 d88b 1100 0000 0000 d88b 2100 0000 0000 d88b 2100 0000 0000 1000 0000 0000 0000 5000 |..........!.......!.............P.|
0x01ba 0000 0000 0000 0800 0000 0000 0000 50e5 7464 0400 0000 640e 1000 0000 0000 640e 1000 |..............P.td....d.......d...|
0x01dc 0000 0000 640e 1000 0000 0000 544f 0000 0000 0000 544f 0000 0000 0000 0400 0000 0000 |....d.......TO......TO............|
0x01fe 0000 51e5 7464 0600 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 |..Q.td............................|
0x0220 0000 0000 0000 0000 0000 0000 0000 0000 0800 0000 0000 0000 52e5 7464 0400 0000 d88b |........................R.td......|
0x0242 1100 0000 0000 d88b 2100 0000 0000 d88b 2100 0000 0000 2834 0000 0000 0000 2834 0000 |........!.......!.....(4......(4..|
0x0264 0000 0000 0100 0000 0000 0000 0400 0000 1000 0000 0100 0000 474e 5500 |........................GNU.|
55829 test RET read 640/0x280
55829 test CALL lseek(0x3,0,0x270,0)
55829 test RET lseek 624/0x270
55829 test CALL read(0x3,0x7fffffffdf68,0x20)
55829 test GIO fd 3 read 32 bytes
0x0000 0400 0000 1000 0000 0100 0000 474e 5500 0300 0000 0500 0000 0400 0000 0000 0000 |............GNU.................|
55829 test RET read 32/0x20
55829 test CALL fstat(0x3,0x7fffffffdf18)
55829 test RET fstat 0
55829 test CALL mmap(0,0x221fe8,0x5,0x2,0x3,0,0)
55829 test RET mmap 6389760/0x800618000
55829 test CALL pread(0x3,0x7fffffffdd7f,0x1,0,0)
55829 test GIO fd 3 read 1 byte
0x0000 7f |.|
55829 test RET pread 1
55829 test CALL mprotect(0x800731000,0x108fe8,0)
55829 test RET mprotect 0
55829 test CALL __sysctl(0x7fffffffdd38,0x2,0x800617988,0x7fffffffdd30,0,0)
55829 test RET __sysctl 0
55829 test CALL mmap(0x800830000,0x6000,0x3,0x12,0x3,0,0x118000)
55829 test RET mmap 8585216/0x800830000
55829 test CALL pread(0x3,0x7fffffffdd7f,0x1,0,0x118000)
55829 test GIO fd 3 read 1 byte
"0"
55829 test RET pread 1
55829 test CALL mmap(0x800836000,0x3fe8,0x3,0x1012,0xffffffff,0,0)
55829 test RET mmap 8609792/0x800836000
55829 test CALL close(0x3)
55829 test RET close 0
55829 test CALL mmap(0,0x1000,0x3,0x1002,0xffffffff,0,0)
55829 test RET mmap 5341184/0x800518000
55829 test CALL mprotect(0x800830000,0x4000,0x1)
55829 test RET mprotect 0
55829 test CALL mprotect(0x800616000,0x1000,0x1)
55829 test RET mprotect 0
55829 test CALL sysarch(0x81,0x7fffffffe710)
55829 test RET sysarch 0
55829 test PSIG SIGSEGV SIG_DFL
55829 test NAMI "test.core"
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