RE: Kernel panic

"Abu M. Muttalib" <abum@xxxxxxxxx> · Tue, 13 Jun 2006 10:52:15 +0530

HI,

Though I am not much into these stuff, but I tried to 
look at the code, in af_itet.c at line no 174 an assertion is failed, going by 
the stack trace it can be observed that some socket is being tried to close 
though its active and is in use.

For 
more concrete answer see the kernelnewbies mailing list.

~Abu. 

  -----Original Message-----
From: Antaryami Sahu 
  [mailto:sahu_nal@xxxxxxxxxxxxxx]
Sent: Tuesday, June 13, 2006 9:46 
  AM
To: abum@xxxxxxxxx
Subject: Kernel 
  panic

Hai Abum,

  I am using Linux-2.4.20-8. 

I did some 
  modification inside 
  <tcp_output.c/tcp_transmit_skb()>

But,

1) During <FTP 
  202.41.64.203>, I got some error message like,
" Attempt to release TCP 
  socket in state 1 c3d34580 "

"Attempt to release alive inet socket 
  C3d09580" 

"KERNEL: assertion (atomic_read(&sk->wmem_alloc) == 
  0) failed at af_inet.c(174) "

After  bye another error message , 
  i.e
  " Segmentation Fault"

2) Also during < Telnet 
  202.41.64.203 > , one error message will come,i.e
    " 
  recvmsg bug: copied B60AIAFF Seq B60AIB0B"

Below is the 
  /var/log/message contents ----

2037 Jun 12 12:32:35 ibm21  -- 
  root[1283]: ROOT LOGIN ON tty1
  2038 Jun 12 12:32:41 ibm21 kernel: 
  Inside loop 0
  2039 Jun 12 12:32:41 ibm21 kernel: Value of err = 
  0
  2040 Jun 12 12:32:41 ibm21 kernel: Inside loop 1
  2041 
  Jun 12 12:32:41 ibm21 kernel: Value of err = 0
  2042 Jun 12 12:32:41 
  ibm21 kernel: Inside loop 2
  2043 Jun 12 12:32:41 ibm21 kernel: Value 
  of err = 0
  2044 Jun 12 12:32:44 ibm21 kernel: Attempt to release TCP 
  socket in state 2 c        3d09580
  2045 Jun 12 
  12:32:44 ibm21 kernel:  Address of copy_skb_header(skbuff.c) = 32  
        23299536<6>Inside loop 0
  2046 Jun 12 
  12:32:44 ibm21 kernel: Value of err = 0
  2047 Jun 12 12:32:44 ibm21 
  kernel: Inside loop 1
  2048 Jun 12 12:32:44 ibm21 kernel: Value of 
  err = 0
  2049 Jun 12 12:32:44 ibm21 kernel: Inside loop 2

  2050 Jun 12 12:32:44 ibm21 kernel: Value of err = 0
  2051 Jun 12 
  12:32:44 ibm21 kernel: Attempt to release alive inet socket c3d09    
      580
  2052 Jun 12 12:32:44 ibm21 kernel: KERNEL: 
  assertion (atomic_read(&sk->wmem_a        lloc) == 
  0) failed at af_inet.c(174)

Please guide me how to solve above 
  error.

Regards
Antaryami 
Regards 

Antaryami Sahu 

Bangalore