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SubjectRe: Announce: kdb v4.4 is available for kernel 2.6.16
On Tue, Mar 21, 2006 at 04:59:24PM +1100, Keith Owens wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> KDB (Linux Kernel Debugger) has been updated for kernel 2.6.16.
>
> ftp://oss.sgi.com/projects/kdb/download/v4.4/
> ftp://ftp.ocs.com.au/pub/mirrors/oss.sgi.com/projects/kdb/download/v4.4/
>
> Note: Due to a spam attack, the kdb@oss.sgi.com mailing list is now
> subscriber only. If you reply to this mail, you may wish to trim
> kdb@oss.sgi.com from the cc: list.
>
> Thanks to Nathan Scott for updating KDB while I was on holiday.
>
> Current versions are :-
>
> kdb-v4.4-2.6.16-common-1.bz2
> kdb-v4.4-2.6.16-i386-1.bz2
> kdb-v4.4-2.6.16-ia64-1.bz2

Thanks for this new version, however I'm looking forward to see
kdb maintained also for the x86_64 architecture. Currently I have
got as far as forward-porting it to a level where it "works" except
for one annoying issue where setjmp/longjmp looks to be broken:

[0]more> q
invalid opcode: 0000 [1] SMP
kdb: Debugger re-entered on cpu 0, new reason = 5
Attempting to abort command and recover
invalid opcode: 0000 [2] SMP
kdb: Debugger re-entered on cpu 0, new reason = 5
Attempting to abort command and recover
invalid opcode: 0000 [3] SMP
kdb: Debugger re-entered on cpu 0, new reason = 5
Attempting to abort command and recover
invalid opcode: 0000 [4] SMP
kdb: Debugger re-entered on cpu 0, new reason = 5
Attempting to abort command and recover
invalid opcode: 0000 [5] SMP
[...]
An inescapable loop.

Kernel configured with CONFIG_FRAME_POINTER=y,
gcc version 3.3.5 (Debian 1:3.3.5-13).

ffffffff8032fc90 <kdba_setjmp>:
ffffffff8032fc90: 55 push %rbp
ffffffff8032fc91: 48 89 e5 mov %rsp,%rbp
ffffffff8032fc94: 48 89 5f 00 mov %rbx,0x0(%rdi)
ffffffff8032fc98: 48 89 6f 08 mov %rbp,0x8(%rdi)
ffffffff8032fc9c: 4c 89 67 10 mov %r12,0x10(%rdi)
ffffffff8032fca0: 4c 89 6f 18 mov %r13,0x18(%rdi)
ffffffff8032fca4: 4c 89 77 20 mov %r14,0x20(%rdi)
ffffffff8032fca8: 4c 89 7f 28 mov %r15,0x28(%rdi)
ffffffff8032fcac: 48 8d 54 24 10 lea 0x10(%rsp),%rdx
ffffffff8032fcb1: 48 89 57 30 mov %rdx,0x30(%rdi)
ffffffff8032fcb5: 48 8b 04 24 mov (%rsp),%rax
ffffffff8032fcb9: 48 89 47 38 mov %rax,0x38(%rdi)
ffffffff8032fcbd: 65 8b 04 25 24 00 00 mov %gs:0x24,%eax
ffffffff8032fcc4: 00
ffffffff8032fcc5: 48 c7 c1 c0 86 57 80 mov $0xffffffff805786c0,%rcx
ffffffff8032fccc: 48 98 cltq
ffffffff8032fcce: 8b 14 81 mov (%rcx,%rax,4),%edx
ffffffff8032fcd1: 80 ce 04 or $0x4,%dh
ffffffff8032fcd4: 89 14 81 mov %edx,(%rcx,%rax,4)
ffffffff8032fcd7: 31 c0 xor %eax,%eax
ffffffff8032fcd9: c9 leaveq
ffffffff8032fcda: c3 retq
ffffffff8032fcdb: 66 data16
ffffffff8032fcdc: 66 data16
ffffffff8032fcdd: 90 nop
ffffffff8032fcde: 66 data16
ffffffff8032fcdf: 90 nop
ffffffff8032fce0 <kdba_longjmp>:
ffffffff8032fce0: 55 push %rbp
ffffffff8032fce1: 48 89 e5 mov %rsp,%rbp
ffffffff8032fce4: 48 8b 5f 00 mov 0x0(%rdi),%rbx
ffffffff8032fce8: 48 8b 6f 08 mov 0x8(%rdi),%rbp
ffffffff8032fcec: 4c 8b 67 10 mov 0x10(%rdi),%r12
ffffffff8032fcf0: 4c 8b 6f 18 mov 0x18(%rdi),%r13
ffffffff8032fcf4: 4c 8b 77 20 mov 0x20(%rdi),%r14
ffffffff8032fcf8: 4c 8b 7f 28 mov 0x28(%rdi),%r15
ffffffff8032fcfc: 85 f6 test %esi,%esi
ffffffff8032fcfe: b8 01 00 00 00 mov $0x1,%eax
ffffffff8032fd03: 0f 44 f0 cmove %eax,%esi
ffffffff8032fd06: 89 f0 mov %esi,%eax
ffffffff8032fd08: 48 8b 57 38 mov 0x38(%rdi),%rdx
ffffffff8032fd0c: 48 8b 67 30 mov 0x30(%rdi),%rsp
ffffffff8032fd10: ff e2 jmpq *%edx
ffffffff8032fd12: c9 leaveq
ffffffff8032fd13: c3 retq
ffffffff8032fd14: 66 data16
ffffffff8032fd15: 66 data16
ffffffff8032fd16: 66 data16
ffffffff8032fd17: 90 nop
ffffffff8032fd18: 66 data16
ffffffff8032fd19: 66 data16
ffffffff8032fd1a: 66 data16
ffffffff8032fd1b: 90 nop
ffffffff8032fd1c: 66 data16
ffffffff8032fd1d: 66 data16
ffffffff8032fd1e: 66 data16
ffffffff8032fd1f: 90 nop
--
Dan Aloni, Linux specialist
XIV LTD, http://www.xivstorage.com
da-x@monatomic.org, da-x@colinux.org, da-x@gmx.net, dan@xiv.co.il
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