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SubjectReproducible oops in 2.5.7-pre2
This oops happens _always_ when I try to boot with 2.4.7-pre2. It happens just after:
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0
found reiserfs format "3.6" with standard journal
This is the oops:


command line of ksymoops: ksymoops --no-ksyms --no-lsmod -o /lib/modules/2.5.7-pre2 -m /boot/System.map-2.5.7-pre2

ksymoops 2.4.3 on i686 2.4.19-pre3-ac5. Options used
-V (default)
-K (specified)
-L (specified)
-o /lib/modules/2.5.7-pre2/ (specified)
-m /boot/System.map-2.5.7-pre2 (specified)

No modules in ksyms, skipping objects
Unable to handle kernel NULL pointer dereference at virtual address 00000010
c0135800
Oops: 0000
CPU: 0
EIP: 0010:[<c0135800>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010246
eax: 00001000 ebx: 0000000a ecx: 00000004 edx: 00000000
esi: 00000004 edi: 00002012 ebp: 00000000 esp: c1069d6c
ds: 0018 es: 0018 ss: 0018
Stack: 00001000 00002012 00000000 c1fabc00 c1fabc00 c0135eff 00000000 00002012
00001000 c1fabc00 c2800000 c28113ec c0136107 00000000 00002012 00001000
c1fabc00 c0172a09 00000000 00002012 00001000 00000400 00000000 c1fabd54
Call Trace: [<c0135eff>] [<c0136107>] [<c0172a09>] [<c0134fb0>] [<c0164cef>]
[<c0165604>] [<c017c120>] [<c013ad79>] [<c0139a24>] [<c01659e7>]
[<c01654d8>] [<c0139bf2>] [c014a549>] [<c014a800>] [<c014a664>]
[<c014ac34>] [<c01f1606>] [<c0105269>] [<c016507f>] [<c0105614>]
Code: 66 8b 45 10 b0 00 8a 55 10 01 d0 25 ff ff 00 00 89 44 24 10

>>EIP; c0135800 <__get_hash_table+1c/c4> <=====
Trace; c0135efe <__getblk+16/3c>
Trace; c0136106 <__bread+16/70>
Trace; c0172a08 <journal_init+f0/6ac>
Trace; c0134fb0 <__wait_on_buffer+84/90>
Trace; c0164cee <read_bitmaps+d2/174>
Trace; c0165604 <reiserfs_fill_super+12c/4a0>
Trace; c017c120 <sprintf+14/18>
Trace; c013ad78 <bdevname+30/3a>
Trace; c0139a24 <get_sb_bdev+1cc/230>
Trace; c01659e6 <reiserfs_get_sb+1e/24>
Trace; c01654d8 <reiserfs_fill_super+0/4a0>
Trace; c0139bf2 <do_kern_mount+4a/c4>
Trace; c014ac34 <sys_mount+a4/114>
Trace; c01f1606 <inet_dump_ifaddr+10e/17c>
Trace; c0105268 <prepare_namespace+a8/e0>
Trace; c016507e <read_super_block+1ca/1cc>
Trace; c0105614 <kernel_thread+28/38>
Code; c0135800 <__get_hash_table+1c/c4>
00000000 <_EIP>:
Code; c0135800 <__get_hash_table+1c/c4> <=====
0: 66 8b 45 10 mov 0x10(%ebp),%ax <=====
Code; c0135804 <__get_hash_table+20/c4>
4: b0 00 mov $0x0,%al
Code; c0135806 <__get_hash_table+22/c4>
6: 8a 55 10 mov 0x10(%ebp),%dl
Code; c0135808 <__get_hash_table+24/c4>
9: 01 d0 add %edx,%eax
Code; c013580a <__get_hash_table+26/c4>
b: 25 ff ff 00 00 and $0xffff,%eax
Code; c0135810 <__get_hash_table+2c/c4>
10: 89 44 24 10 mov %eax,0x10(%esp,1)

Kernel panic: Attempted to kill init!

Another thing with 2.5.7-pre2 kernel is that i can't compile it without having nfs server sopport enabled.
This is the error:
arch/i386/kernel/kernel.o: In function 'sys_call_table':
arch/i386/kernel/kernel.o(.data+0x304): undefined reference to 'sys_nfsservctl'
make: *** [vmlinux] Error 1

I think the problem is in include/linux/nfsd/syscall.h:

/*
* Kernel syscall implementation
*/
#if defined(CONFIG_NFSD) || defined(CONFIG_NFSD_MODULE)
extern asmlinkage long sys_nfsservctl(int, struct nfsctl_arg *, void);
#else
#define sys_nsfservctl sys_ni_syscall
#endif



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