2.5.47-mm2 - oops with scp

2.5.47-mm2 - oops with scp

[Paul Larson]

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This has been opened as bug #21 on bugme.osdl.org.
http://bugme.osdl.org/show_bug.cgi?id=21

When trying to scp a file to the victim machine, I got this message then
the oops:

Attempt to release alive inet socket cdb59b60

ksymoops 2.4.4 on i686 2.4.18-3.  Options used
     -V (default)
     -K (specified)
     -L (specified)
     -O (specified)
     -m System.map (specified)

Unable to handle kernel paging request at virtual address 5a5a5a5a
c0115eea
*pde = 00000000
Oops: 0002
CPU:    0
EIP:    0060:[<c0115eea>]    Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010082
eax: cdb59b8c   ebx: 5a5a5a5a   ecx: cdb3dea0   edx: cdb3de94
esi: 00000202   edi: 00000001   ebp: 00001354   esp: cdb3de68
ds: 0068   es: 0068   ss: 0068
Stack: cdb3c000 cdb59b60 c02a51db 00000000 ce3f8740 c0114e50 00000000
00000000
       0001c67f cdb3de9c c011d9e5 00000001 ce3f8740 c0114e50 cdb59b8c
5a5a5a5a
       000005a8 4b87ad6e c011d950 c033b929 cdb3c000 cdb59b60 c02bec57
cdb59b60
Call Trace: [<c02a51db>]  [<c0114e50>]  [<c011d9e5>]  [<c0114e50>] 
[<c011d950>]
 [<c02bec57>]  [<c0114e50>]  [<c0114e50>]  [<c02c7e52>]  [<c02d7b57>] 
[<c02a28c0>]  [<c02a311d>]  [<c013e0a2>]  [<c02a3d81>]  [<c013c9ed>] 
[<c013ca45>]  [<c010a62f>]
Code: 89 0b 56 9d 5b 5e c3 eb 0d 90 90 90 90 90 90 90 90 90 90 90

>>EIP; c0115eea <add_wait_queue_exclusive+1a/30>   <=====
Trace; c02a51db <__lock_sock+7b/f0>
Trace; c0114e50 <default_wake_function+0/40>
Trace; c011d9e5 <schedule_timeout+85/a0>
Trace; c0114e50 <default_wake_function+0/40>
Trace; c011d950 <process_timeout+0/10>
Trace; c02bec57 <tcp_close+337/690>
Trace; c0114e50 <default_wake_function+0/40>
Trace; c0114e50 <default_wake_function+0/40>
Trace; c02c7e52 <tcp_send_fin+1b2/280>
Trace; c02d7b57 <inet_release+47/50>
Trace; c02a28c0 <sock_release+10/50>
Trace; c02a311d <sock_close+2d/40>
Trace; c013e0a2 <__fput+32/d0>
Trace; c02a3d81 <sys_shutdown+31/40>
Trace; c013c9ed <filp_close+4d/60>
Trace; c013ca45 <sys_close+45/60>
Trace; c010a62f <syscall_call+7/b>
Code;  c0115eea <add_wait_queue_exclusive+1a/30>
00000000 <_EIP>:
Code;  c0115eea <add_wait_queue_exclusive+1a/30>   <=====
   0:   89 0b                     mov    %ecx,(%ebx)   <=====
Code;  c0115eec <add_wait_queue_exclusive+1c/30>
   2:   56                        push   %esi
Code;  c0115eed <add_wait_queue_exclusive+1d/30>
   3:   9d                        popf
Code;  c0115eee <add_wait_queue_exclusive+1e/30>
   4:   5b                        pop    %ebx
Code;  c0115eef <add_wait_queue_exclusive+1f/30>
   5:   5e                        pop    %esi
Code;  c0115ef0 <add_wait_queue_exclusive+20/30>
   6:   c3                        ret
Code;  c0115ef1 <add_wait_queue_exclusive+21/30>
   7:   eb 0d                     jmp    16 <_EIP+0x16> c0115f00
<remove_wait_queue+0/20>
Code;  c0115ef3 <add_wait_queue_exclusive+23/30>
   9:   90                        nop
Code;  c0115ef4 <add_wait_queue_exclusive+24/30>
   a:   90                        nop
Code;  c0115ef5 <add_wait_queue_exclusive+25/30>
   b:   90                        nop
Code;  c0115ef6 <add_wait_queue_exclusive+26/30>
   c:   90                        nop
Code;  c0115ef7 <add_wait_queue_exclusive+27/30>
   d:   90                        nop
Code;  c0115ef8 <add_wait_queue_exclusive+28/30>
   e:   90                        nop
Code;  c0115ef9 <add_wait_queue_exclusive+29/30>
   f:   90                        nop
Code;  c0115efa <add_wait_queue_exclusive+2a/30>
  10:   90                        nop
Code;  c0115efb <add_wait_queue_exclusive+2b/30>
  11:   90                        nop
Code;  c0115efc <add_wait_queue_exclusive+2c/30>
  12:   90                        nop
Code;  c0115efd <add_wait_queue_exclusive+2d/30>
  13:   90                        nop

<0>Kernel panic: Aiee, killing interrupt handler!

Steps to reproduce:
scp anyfile user@target:/tmp

It asks for the password, and finishes copying the file.  After it's
complete
though, the server crashes.


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Re: 2.5.47-mm2 - oops with scp

[Andrew Morton]

Paul Larson wrote:
> 
> This has been opened as bug #21 on bugme.osdl.org.
> http://bugme.osdl.org/show_bug.cgi?id=21
> 
> When trying to scp a file to the victim machine, I got this message then
> the oops:
> 
> Attempt to release alive inet socket cdb59b60
> 

That's a bug I added to tcp_init_xmit_timers().   The right
code is in Linus's tree as of this morning.

I really don't know what I was thinking of, making that change :(
I guess after the thousandth timer, the brain fried.
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