Oops on boot with 2.4.0-test13-pre7

Rich Baum (baumr1@coral.indstate.edu)
Sun, 31 Dec 2000 22:16:25 -0500


When I boot a version of test13-pre7 that was compiled with the
20001225 snapshot of gcc I get the following oops:

ksymoops 2.3.5 on i586 2.4.0-test11. Options used
-V (specified)
-K (specified)
-L (specified)
-o /lib/modules/2.4.0-test13-pre7/ (specified)
-m /boot/System.map-2.4.0-test13 (specified)

No modules in ksyms, skipping objects
Oops: 0000
CPU: 0
EIP: 0010:[<c0112a0d>]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010083
eax: cbfebfb0 ebx: c3585a59 ecx: fffffe44 edx: 00000003
esi: c0107b94 edi: cbf7423a ebp: cbf75fc8 esp: cbf75fa4
ds: 0018 es: 0018 ss: 0018
Process kupdate (pid: 6, stackpage=cbf75000)
Stack: 00000000 00000246 00000000 cbfebfb0 00000001
00000003 cbf74000 c0216576
cbf7423a cbf74000 c0107bc0 cbfebfa4 cbf74550 00000000
c020f803 00010f00
cbfebf6c cbfebfb8 0008e000 c01074b6 cbfebfa4 c0135cf0
cbfebf98
Call Trace: [<c0216576>] [<c0107bc0>] [<c020f803>]
[<c01074b6>] [<c0135cf0>]
Code: 8b 01 85 45 f0 74 ec 8b 7d dc 85 ff 0f 84 81 00 00 00 8b 45

>>EIP; c0112a0d <__wake_up+5d/140> <=====
Trace; c0216576 <tvecs+1c76/a3c0>
Trace; c0107bc0 <__up_wakeup+8/c>
Trace; c020f803 <stext_lock+433/5530>
Trace; c01074b6 <kernel_thread+26/30>
Trace; c0135cf0 <kupdate+0/f0>
Code; c0112a0d <__wake_up+5d/140>
00000000 <_EIP>:
Code; c0112a0d <__wake_up+5d/140> <=====
0: 8b 01 mov (%ecx),%eax <=====
Code; c0112a0f <__wake_up+5f/140>
2: 85 45 f0 test %eax,0xfffffff0(%ebp)
Code; c0112a12 <__wake_up+62/140>
5: 74 ec je fffffff3 <_EIP+0xfffffff3> c0112a00
<__wake_up+50/140>
Code; c0112a14 <__wake_up+64/140>
7: 8b 7d dc mov 0xffffffdc(%ebp),%edi
Code; c0112a17 <__wake_up+67/140>
a: 85 ff test %edi,%edi
Code; c0112a19 <__wake_up+69/140>
c: 0f 84 81 00 00 00 je 93 <_EIP+0x93> c0112aa0
<__wake_up+f0/140>
Code; c0112a1f <__wake_up+6f/140>
12: 8b 45 00 mov 0x0(%ebp),%eax

It appears to be a compiler bug since using egcs-1.1.2 works just
fine. If anyone was a patch to try and fix this I'll be happy to try it.
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