[OOPS] uart_block_til_ready 2.5.63

[OOPS] uart_block_til_ready 2.5.63

[Ed Tomlinson]

Found this in my log a couple of hours after booting .63

Feb 24 21:14:44 oscar kernel:  printing eip:
Feb 24 21:14:44 oscar kernel: c01aed4a
Feb 24 21:14:44 oscar kernel: Oops: 0000
Feb 24 21:14:44 oscar kernel: CPU:    0
Feb 24 21:14:44 oscar kernel: EIP:    0060:[uart_block_til_ready+362/428]    Not tainted
Feb 24 21:14:44 oscar kernel: EFLAGS: 00010246
Feb 24 21:14:44 oscar kernel: EIP is at uart_block_til_ready+0x16a/0x1ac
Feb 24 21:14:44 oscar kernel: eax: 00000000   ebx: da504000   ecx: dfd54818   edx: dfd4e3c0
Feb 24 21:14:44 oscar kernel: esi: da505e68   edi: 00000202   ebp: da505e7c   esp: da505e40
Feb 24 21:14:44 oscar kernel: ds: 007b   es: 007b   ss: 0068
Feb 24 21:14:44 oscar kernel: Process bkupsd (pid: 956, threadinfo=da504000 task=da72a700)
Feb 24 21:14:44 oscar kernel: Stack: c02d4100 00000001 00000000 c032f234 dfd54818 00000000 da72a700 c0113718
Feb 24 21:14:44 oscar kernel:        00000000 00000000 00000000 da72a700 c0113718 dfd4e410 dfd4e410 da505eb8
Feb 24 21:14:44 oscar kernel:        c01af0a4 da747320 dfd4e3c0 00000000 00000100 00000000 00000001 dfd4e3c0
Feb 24 21:14:44 oscar kernel: Call Trace:
Feb 24 21:14:44 oscar kernel:  [default_wake_function+0/24] default_wake_function+0x0/0x18
Feb 24 21:14:44 oscar kernel:  [default_wake_function+0/24] default_wake_function+0x0/0x18
Feb 24 21:14:44 oscar kernel:  [uart_open+544/664] uart_open+0x220/0x298
Feb 24 21:14:44 oscar kernel:  [tty_open+479/908] tty_open+0x1df/0x38c
Feb 24 21:14:44 oscar kernel:  [tty_open+525/908] tty_open+0x20d/0x38c
Feb 24 21:14:44 oscar kernel:  [link_path_walk+1626/2008] link_path_walk+0x65a/0x7d8
Feb 24 21:14:44 oscar kernel:  [get_chrfops+216/488] get_chrfops+0xd8/0x1e8
Feb 24 21:14:44 oscar kernel:  [chrdev_open+94/156] chrdev_open+0x5e/0x9c
Feb 24 21:14:44 oscar kernel:  [dentry_open+252/480] dentry_open+0xfc/0x1e0
Feb 24 21:14:44 oscar kernel:  [filp_open+64/72] filp_open+0x40/0x48
Feb 24 21:14:44 oscar kernel:  [sys_open+52/112] sys_open+0x34/0x70
Feb 24 21:14:44 oscar kernel:  [syscall_call+7/11] syscall_call+0x7/0xb
Feb 24 21:14:44 oscar kernel:
Feb 24 21:14:44 oscar kernel: Code: f6 80 1c 01 00 00 02 75 2d 8b 4d 08 51 e8 10 6e 00 00 85 c0
Feb 24 21:15:26 oscar kernel:  <6>

Ideas?
Ed Tomlinson

Re: [OOPS] uart_block_til_ready 2.5.63

[Russell King]

On Mon, Feb 24, 2003 at 09:42:25PM -0500, Ed Tomlinson wrote:
> Feb 24 21:14:44 oscar kernel: Code: f6 80 1c 01 00 00 02 75 2d 8b 4d 08 51 e8 10 6e 00 00 85 c0

Can someone decode this Code: line into something useful please?
(maybe we should put in an instruction decoder as well as kallsyms
into the kernel? 8))

-- 
Russell King (rmk@arm.linux.org.uk)                The developer of ARM Linux
             http://www.arm.linux.org.uk/personal/aboutme.html

Re: [OOPS] uart_block_til_ready 2.5.63

[Andrew Morton]

Russell King <rmk@arm.linux.org.uk> wrote:
>
> On Mon, Feb 24, 2003 at 09:42:25PM -0500, Ed Tomlinson wrote:
> > Feb 24 21:14:44 oscar kernel: Code: f6 80 1c 01 00 00 02 75 2d 8b 4d 08 51 e8 10 6e 00 00 85 c0
> 
> Can someone decode this Code: line into something useful please?

You can just feed that single line into ksymooops.  As long
as you have an x86 machine ;)

mnm:/home/akpm> echo "Code: f6 80 1c 01 00 00 02 75 2d 8b 4d 08 51 e8 10 6e 00 00 85 c0" | ksymoops
....

Code;  00000000 Before first symbol
00000000 <_EIP>:
Code;  00000000 Before first symbol
   0:   f6 80 1c 01 00 00 02      testb  $0x2,0x11c(%eax)
Code;  00000007 Before first symbol
   7:   75 2d                     jne    36 <_EIP+0x36>
Code;  00000009 Before first symbol
   9:   8b 4d 08                  mov    0x8(%ebp),%ecx
Code;  0000000c Before first symbol
   c:   51                        push   %ecx
Code;  0000000d Before first symbol
   d:   e8 10 6e 00 00            call   6e22 <_EIP+0x6e22>
Code;  00000012 Before first symbol
  12:   85 c0                     test   %eax,%eax


1 warning and 1 error issued.  Results may not be reliable.

Re: [OOPS] uart_block_til_ready 2.5.63

[Randy.Dunlap]

On Tue, 25 Feb 2003 09:35:44 +0000
Russell King <rmk@arm.linux.org.uk> wrote:

| On Mon, Feb 24, 2003 at 09:42:25PM -0500, Ed Tomlinson wrote:
| > Feb 24 21:14:44 oscar kernel: Code: f6 80 1c 01 00 00 02 75 2d 8b 4d 08 51 e8 10 6e 00 00 85 c0
| 
| Can someone decode this Code: line into something useful please?
| (maybe we should put in an instruction decoder as well as kallsyms
| into the kernel? 8))

Is there a bingrep, so that you can grep for that binary string in
vmlinux (or whatever it's named)?

If not and you haven't already written one, you can use my
binoffset program for that.  It might help your search time.
It's at
  http://www.osdl.org/archive/rddunlap/patches/ikconfig/binoffset.c

--
~Randy