Messages in this thread | | | Date | Mon, 24 Nov 2008 22:19:05 +0100 | From | "Vegard Nossum" <> | Subject | v2.6.28-rc2: x86_32 relocation regression? |
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Hi,
I couldn't help noticing that addr2line no longer works for me since at least v2.6.28-rc2. I get this:
EIP: 0060:[<c039e613>] EFLAGS: 00000202 CPU: 0 EIP is at strcpy+0x13/0x30
$ addr2line -e vmlinux -i c039e613 ??:0
...even though the kernel was configured with CONFIG_DEBUG_INFO=y.
$ grep DEBUG_INFO .config CONFIG_DEBUG_INFO=y
gdb too:
(gdb) disas 0xc039e613 No function contains specified address.
This is a simple x86_32 defconfig with CONFIG_DEBUG_INFO toggled.
$ nm vmlinux | grep strcpy c12a3b90 t scsi_strcpy_devinfo c119e600 T strcpy
It looks like everything was offset by 0xe00000:
$ addr2line -e vmlinux c119e613 arch/x86/lib/string_32.c:20
I have also this:
virtual kernel memory layout: fixmap : 0xffc79000 - 0xfffff000 (3608 kB) pkmap : 0xff400000 - 0xff800000 (4096 kB) vmalloc : 0xc87f0000 - 0xff3fe000 ( 876 MB) lowmem : 0xc0000000 - 0xc7ff0000 ( 127 MB) .init : 0xc08ce000 - 0xc0932000 ( 400 kB) .data : 0xc06c9a4b - 0xc08c46ec (2027 kB) .text : 0xc0200000 - 0xc06c9a4b (4902 kB)
Any ideas?
Thanks,
Vegard
-- "The animistic metaphor of the bug that maliciously sneaked in while the programmer was not looking is intellectually dishonest as it disguises that the error is the programmer's own creation." -- E. W. Dijkstra, EWD1036
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