On Thu, 2012-01-26 at 15:24 -0500, Dave Anderson wrote:
>
> ----- Original Message -----
> >
> >
> > ----- Original Message -----
> > > I've reverted back to crash-5.1.9 and applied my kmem patch to that for
> > > our use here. We're using a 3.1-based kernel, and need the kmem patch
> > > so crash can deal with the change in CONFIG_SLAB, but we're building
> > > with gcc-4.4.5 and don't really need the new gdb in crash-6.0.2, and
> > > crash-6.0.2 is not giving module source line numbers for us with "dis -l".
> > >
> > > This is just a heads up. I don't know why 6.0.2 is failing this, and
> > > since I found the last module source line number problem, it's not my
> > > turn ;-)
> > >
> > > Bob Montgomery
> >
> > What kernel version? I'll try to reproduce it.
Here's your test on my system:
crash-6.0.2> help | grep version
crash-6.0.2 version: 6.0.2 gdb version: 7.3.1
crash-6.0.2> help -k | grep proc_version
proc_version: Linux version 3.1.4-clim-2-amd64 (buildd@hpdebuild) (gcc
version 4.4.5 (Debian 4.4.5-8) ) #1 SMP Fri Dec 16 00:12:55 UTC 2011
crash-6.0.2> mod -s bnx2 /usr/lib/debug/lib/modules/3.1.4-clim-2-amd64/kernel/drivers/net/bnx2.ko
MODULE NAME SIZE OBJECT FILE
ffffffffa01f85e0 bnx2 65655 /usr/lib/debug/lib/modules/3.1.4-clim-2-amd64/kernel/drivers/net/bnx2.ko
/build/buildd/linux-3.1-clim-3.1.4-clim/debian/build/build_amd64_none_amd64/drivers/net/bnx2.c: 6265
0xffffffffa01f32e1 <bnx2_open>: push %rbp
0xffffffffa01f32e2 <bnx2_open+1>: mov %rsp,%rbp
0xffffffffa01f32e5 <bnx2_open+4>: push %r15
0xffffffffa01f32e7 <bnx2_open+6>: push %r14
0xffffffffa01f32e9 <bnx2_open+8>: push %r13
0xffffffffa01f32eb <bnx2_open+10>: push %r12
0xffffffffa01f32ed <bnx2_open+12>: mov %rdi,%r12
0xffffffffa01f32f0 <bnx2_open+15>: push %rbx
/build/buildd/linux-3.1-clim-3.1.4-clim/debian/build/build_amd64_none_amd64/drivers/net/bnx2.c: 6266
0xffffffffa01f32f1 <bnx2_open+16>: lea 0x640(%rdi),%rbx
/build/buildd/linux-3.1-clim-3.1.4-clim/debian/build/build_amd64_none_amd64/drivers/net/bnx2.c: 6265
0xffffffffa01f32f8 <bnx2_open+23>: sub $0x8,%rsp
/build/buildd/linux-3.1-clim-3.1.4-clim/debian/build/build_amd64_none_amd64/drivers/net/bnx2.c: 6269
Ummmm. Ooops? Is it time to prepare my embarrassing explanation of my
prior claim???
=====================
First start over and do what I actually was doing when I saw the
problem:
$ crash-6.0.2 --no_kmem_cache dump.201201062015 kernel_link
...
crash-6.0.2> help | grep version
crash-6.0.2 version: 6.0.2 gdb version: 7.3.1
crash> help -k | grep proc_version
proc_version: Linux version 3.1.4-clim-2-amd64 (buildd@hpdebuild) (gcc
version 4.4.5 (Debian 4.4.5-8) ) #1 SMP Fri Dec 16 00:12:55 UTC 2011
crash-6.0.2> mod -S /usr/lib/debug/lib/modules/3.1.4-clim-2-amd64
...
crash-6.0.2> mod | grep sunrpc
ffffffffa01cab80 auth_rpcgss
40572 /usr/lib/debug/lib/modules/3.1.4-clim-2-amd64/kernel/net/sunrpc/auth_gss/auth_rpcgss.ko
ffffffffa03a7070 sunrpc
202679 /usr/lib/debug/lib/modules/3.1.4-clim-2-amd64/kernel/net/sunrpc/sunrpc.ko
crash-6.0.2> dis -l rpc_sleep_on_priority
0xffffffffa038f71b <rpc_sleep_on_priority>: push %rbp
0xffffffffa038f71c <rpc_sleep_on_priority+1>: mov %rsp,%rbp
0xffffffffa038f71f <rpc_sleep_on_priority+4>: push %r12
0xffffffffa038f721 <rpc_sleep_on_priority+6>: mov %ecx,%r12d
0xffffffffa038f724 <rpc_sleep_on_priority+9>: push %rbx
0xffffffffa038f725 <rpc_sleep_on_priority+10>: mov %rdi,%rbx
0xffffffffa038f728 <rpc_sleep_on_priority+13>: sub $0x10,%rsp
0xffffffffa038f72c <rpc_sleep_on_priority+17>: mov 0x70(%rsi),%rax
0xffffffffa038f730 <rpc_sleep_on_priority+21>: test $0x4,%al
0xffffffffa038f732 <rpc_sleep_on_priority+23>: jne
0xffffffffa038f738
0xffffffffa038f734 <rpc_sleep_on_priority+25>: ud2
Well, that's a relief...
Oh, by the way, now that I've used mod -S to load all modules instead of
individually loading bnx2.ko:
crash-6.0.2> mod | grep bnx2
ffffffffa01f85e0 bnx2 65655 /usr/lib/debug/lib/modules/3.1.4-clim-2-amd64/kernel/drivers/net/bnx2.ko
crash-6.0.2> dis -l bnx2_open
0xffffffffa01f32e1 <bnx2_open>: push %rbp
0xffffffffa01f32e2 <bnx2_open+1>: mov %rsp,%rbp
0xffffffffa01f32e5 <bnx2_open+4>: push %r15
0xffffffffa01f32e7 <bnx2_open+6>: push %r14
0xffffffffa01f32e9 <bnx2_open+8>: push %r13
0xffffffffa01f32eb <bnx2_open+10>: push %r12
0xffffffffa01f32ed <bnx2_open+12>: mov %rdi,%r12
0xffffffffa01f32f0 <bnx2_open+15>: push %rbx
0xffffffffa01f32f1 <bnx2_open+16>: lea 0x640(%rdi),%rbx
0xffffffffa01f32f8 <bnx2_open+23>: sub $0x8,%rsp
0xffffffffa01f32fc <bnx2_open+27>: callq 0xffffffff8129477b <netif_carrier_off>
No source lines.
===================
If I do the same steps on my 5.1.9 version of crash, I get:
crash> help | grep version
crash version: 5.1.9 gdb version: 7.0
crash> help -k | grep proc_version
proc_version: Linux version 3.1.4-clim-2-amd64 (buildd@hpdebuild) (gcc
version 4.4.5 (Debian 4.4.5-8) ) #1 SMP Fri Dec 16 00:12:55 UTC 2011
crash> mod -S /usr/lib/debug/lib/modules/3.1.4-clim-2-amd64
...
crash> dis -l rpc_sleep_on_priority
/build/buildd/linux-3.1-clim-3.1.4-clim/debian/build/build_amd64_none_amd64/net/sunrpc/sched.c: 350
0xffffffffa038f71b <rpc_sleep_on_priority>: push %rbp
0xffffffffa038f71c <rpc_sleep_on_priority+1>: mov %rsp,%rbp
0xffffffffa038f71f <rpc_sleep_on_priority+4>: push %r12
0xffffffffa038f721 <rpc_sleep_on_priority+6>: mov %ecx,%r12d
0xffffffffa038f724 <rpc_sleep_on_priority+9>: push %rbx
0xffffffffa038f725 <rpc_sleep_on_priority+10>: mov %rdi,%rbx
0xffffffffa038f728 <rpc_sleep_on_priority+13>: sub $0x10,%rsp
/build/buildd/linux-3.1-clim-3.1.4-clim/debian/build/build_amd64_none_amd64/arch/x86/include/asm/bitops.h: 312
0xffffffffa038f72c <rpc_sleep_on_priority+17>: mov 0x70(%rsi),%rax
/build/buildd/linux-3.1-clim-3.1.4-clim/debian/build/build_amd64_none_amd64/net/sunrpc/sched.c: 352
0xffffffffa038f730 <rpc_sleep_on_priority+21>: test $0x4,%al
0xffffffffa038f732 <rpc_sleep_on_priority+23>: jne
0xffffffffa038f738 <rpc_sleep_on_priority+29>
0xffffffffa038f734 <rpc_sleep_on_priority+25>: ud2a
So 5.1.9 works, and 6.0.2 fails if I load all modules with mod -S.
That's interesting.
Bob Montgomery
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