Hi Folks!
couldn't believe it when I discovered that BUG_ON()
and friends is broken (at least on x86) ...
(while it was definitely working with 2.6.10 ;)
the following 'patch':
--- ./init/main.c.orig Thu Feb 17 19:25:21 2005
+++ ./init/main.c Sun Feb 27 05:13:45 2005
@@ -684,6 +684,8 @@ static int init(void * unused)
* trying to recover a really broken machine.
*/
+ BUG_ON(0==0);
+
if (execute_command)
run_init_process(execute_command);
results in this oops:
(look at the filename and linenumber ;)
Freeing unused kernel memory: 244k freed
------------[ cut here ]------------
kernel BUG at <bad filename>:9377!
invalid operand: 0000 [#1]
PREEMPT SMP
Modules linked in:
CPU: 1
EIP: 0060:[<c0100415>] Not tainted VLI
EFLAGS: 00010296 (2.6.11-rc1)
EIP is at init+0xf5/0x1a0
eax: 00000002 ebx: c04ed91c ecx: 00000001 edx: 00000001
esi: 00000000 edi: 00000000 ebp: 00000000 esp: c2113fdc
ds: 007b es: 007b ss: 0068
Process swapper (pid: 1, threadinfo=c2113000 task=c2114a80)
Stack: 00000000 00000002 00000000 c0100320 00000000 c0101375 00000000 00000000
00000000
Call Trace:
[<c0100320>] init+0x0/0x1a0
[<c0101375>] kernel_thread_helper+0x5/0x10
Code: 00 00 89 54 24 08 89 44 24 04 e8 97 f8 05 00 85 c0 78 6d c7 04 24 00 00 0
<0>Kernel panic - not syncing: Attempted to kill init!
this is still true/valid for 2.6.11-rc5 ...
best,
Herbert
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