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| author | Randy Dunlap <randy.dunlap@oracle.com> | 2007-07-16 08:41:15 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-16 18:05:48 +0200 |
| commit | dcecc6c70013e3a5fa81b3081480c03e10670a23 (patch) | |
| tree | a45c6a35538004732ea4ce130f9fa5db5f8a1bf6 /Documentation | |
| parent | namespace: ensure clone_flags are always stored in an unsigned long (diff) | |
| download | linux-dcecc6c70013e3a5fa81b3081480c03e10670a23.tar.xz linux-dcecc6c70013e3a5fa81b3081480c03e10670a23.zip | |
doc/oops-tracing: add Code: decode info
Add info that the Code: bytes line contains <xy> or (wxyz) in some
architecture oops reports and what that means.
Add a script by Andi Kleen that reads the Code: line from an Oops report
file and generates assembly code from the hex bytes.
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/oops-tracing.txt | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/Documentation/oops-tracing.txt b/Documentation/oops-tracing.txt index 7d5b60dea551..23e6dde7eea6 100644 --- a/Documentation/oops-tracing.txt +++ b/Documentation/oops-tracing.txt @@ -86,6 +86,20 @@ stuff are the values reported by the Oops - you can just cut-and-paste and do a replace of spaces to "\x" - that's what I do, as I'm too lazy to write a program to automate this all). +Alternatively, you can use the shell script in scripts/decodecode. +Its usage is: decodecode < oops.txt + +The hex bytes that follow "Code:" may (in some architectures) have a series +of bytes that precede the current instruction pointer as well as bytes at and +following the current instruction pointer. In some cases, one instruction +byte or word is surrounded by <> or (), as in "<86>" or "(f00d)". These +<> or () markings indicate the current instruction pointer. Example from +i386, split into multiple lines for readability: + +Code: f9 0f 8d f9 00 00 00 8d 42 0c e8 dd 26 11 c7 a1 60 ea 2b f9 8b 50 08 a1 +64 ea 2b f9 8d 34 82 8b 1e 85 db 74 6d 8b 15 60 ea 2b f9 <8b> 43 04 39 42 54 +7e 04 40 89 42 54 8b 43 04 3b 05 00 f6 52 c0 + Finally, if you want to see where the code comes from, you can do cd /usr/src/linux |