Hi,
Finally I am able to get the vmcore on kernel-26.20 using kexec tools.
But, While anlysing it through gdb, not getting the proper info.
[EMAIL PROTECTED] gdb /usr/u/seetharam/bin/vmlinux-dir/vmlinux-Primary-kernel
vmcore/vmcore.3
GNU gdb Red Hat Linux (6.3.0.0-1.21.agamirh)
Copyright 2004 Free Software Foundation, Inc.
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This GDB was configured as "x86_64-redhat-linux-gnu"...Using host libthread_db
library "/lib64/tls/libthread_db.so.1".
#0 0xffffffff8025399c in crash_kexec (regs=0x0) at include/asm/kexec.h:85
85 newregs->rip = (unsigned long)current_text_addr();
(gdb) bt
#0 0xffffffff8025399c in crash_kexec (regs=0x0) at include/asm/kexec.h:85
#1 0xffffffff8022fc72 in panic (
fmt=0xffffffff8808f350 <Address 0xffffffff8808f350 out of bounds>)
at kernel/panic.c:88
#2 0xffffffff8808f023 in ?? ()
#3 0xffff8100ec323ea8 in ?? ()
#4 0xffffffff8808f051 in ?? ()
#5 0xffff8100ec323eb8 in ?? ()
#6 0xffffffff8808f081 in ?? ()
#7 0xffff8100ec323ec8 in ?? ()
#8 0xffffffff8808f0b1 in ?? ()
#9 0xffff8100ec323ed8 in ?? ()
#10 0xffffffff8808f0e1 in ?? ()
#11 0xffff8100ec323ee8 in ?? ()
#12 0xffffffff8808f111 in ?? ()
#13 0xffff8100ec323ef8 in ?? ()
#14 0xffffffff8808f141 in ?? ()
#15 0xffff8100ec323f08 in ?? ()
#16 0xffffffff8808f171 in ?? ()
#17 0xffff8100ec323f18 in ?? ()
#18 0xffffffff8808f1a1 in ?? ()
#19 0xffff8100ec323f28 in ?? ()
#20 0xffffffff8808f1d1 in ?? ()
---Type <return> to continue, or q <return> to quit---
#21 0xffff8100ec323f38 in ?? ()
#22 0xffffffff8808f201 in ?? ()
#23 0xffff8100ec323f48 in ?? ()
#24 0xffffffff8809201e in ?? ()
#25 0xffff8100ec323f78 in ?? ()
#26 0xffffffff80250b02 in sys_init_module (umod=0x535030, len=106308,
uargs=0xffffffff8808fa00 <Address 0xffffffff8808fa00 out of bounds>)
at kernel/module.c:1991
Previous frame inner to this frame (corrupt stack?)
(gdb)
info threads also not giving prroper result.
I am able to get useful data using the crash tool.
crash> bt
PID: 4340 TASK: ffff81000564d790 CPU: 0 COMMAND: "insmod"
#0 [ffff8100ec323cd0] crash_kexec at ffffffff802539b4
#1 [ffff8100ec323d50] do_unblank_screen at ffffffff803b1e70
#2 [ffff8100ec323d58] crash_kexec at ffffffff8025399c
#3 [ffff8100ec323d80] bust_spinlocks at ffffffff8021d357
#4 [ffff8100ec323d90] cleanup_module at ffffffff8808f350
#5 [ffff8100ec323da0] panic at ffffffff8022fc72
#6 [ffff8100ec323e90] function11 at ffffffff8808f023
#7 [ffff8100ec323ea0] function10 at ffffffff8808f051
#8 [ffff8100ec323eb0] function9 at ffffffff8808f081
#9 [ffff8100ec323ec0] function8 at ffffffff8808f0b1
#10 [ffff8100ec323ed0] function7 at ffffffff8808f0e1
#11 [ffff8100ec323ee0] function6 at ffffffff8808f111
#12 [ffff8100ec323ef0] function5 at ffffffff8808f141
#13 [ffff8100ec323f00] function4 at ffffffff8808f171
#14 [ffff8100ec323f10] function3 at ffffffff8808f1a1
#15 [ffff8100ec323f20] function2 at ffffffff8808f1d1
#16 [ffff8100ec323f30] function1 at ffffffff8808f201
#17 [ffff8100ec323f50] sys_init_module at ffffffff80250b02
#18 [ffff8100ec323f80] system_call at ffffffff80209dee
RIP: 00002acb5608544c RSP: 00007fff54c0b5e8 RFLAGS: 00010206
RAX: 00000000000000af RBX: ffffffff80209dee RCX: 00002acb560790a2
RDX: 0000000000535010 RSI: 0000000000019f44 RDI: 0000000000535030
RBP: 0000000000000002 R8: 0000000000020010 R9: 0000000000010fd0
R10: 00002acb560790a2 R11: 0000000000000206 R12: 00007fff54c10c42
R13: 0000000000535010 R14: 00007fff54c0e1d0 R15: 0000000000000002
ORIG_RAX: 00000000000000af CS: 0033 SS: 002b
crash>
Can you please give me some hints regarding gdb?
I am thinking the current gdb with kernel-2.6.20 is not good.
or
I have missed something to produce correct result?
Thanks and Regards
Dharmosoth Seetharam
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