Re: assertion (cnt <= tp->packets_out) failed

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John Bäckstrand <[email protected]> wrote:
>
>  Someone asked if I could try to trigger this assertion again, and I'm 
>  afraid I probably cannot, I didnt do anything special at the time. But 
>  I've got something even better for you all, got a BUG from something 
>  tcp-related. Mind you, I am trying to find a possibly hardware-related 
>  issue here, so if this bug does not make any sense it might be my hardware!
> 
>  I would actually want to know it if this is likely hardware-related or 
>  not, since I have no idea if its RAM, CPU, motherboard or "only" a disk 
>  that is broken. I know _something_ is broken, due to lockups, and seeing 
>  a faulty disk indicated in a HDD diag, but only once, the disk is 
>  apparently fine 99% of the time.
> 
>  ---
>  John Bäckstrand
> 
> 
>  [148475.651000] ------------[ cut here ]------------
>  [148475.651050] kernel BUG at net/ipv4/tcp_output.c:918!

I think we've seen a couple of reports of this.

>  [148475.651078] invalid operand: 0000 [#1]
>  [148475.651103] Modules linked in: sha256 aes_i586 dm_crypt ipt_state 
>  ipt_multiport ipt_MASQUERADE iptable_filter netconsole md5 ipv6 
>  af_packet pdc202xx_new e1000 8139cp de2104x i2c_viapro via686a 
>  i2c_sensor i2c_core uhci_hcd usbcore 3c59x 8139too mii de4x5 crc32 
>  parport_pc parport reiserfs dm_mod ip_nat_ftp iptable_nat ip_tables 
>  ip_conntrack_ftp ip_conntrack rtc unix
>  [148475.651378] CPU:    0
>  [148475.651380] EIP:    0060:[<c0286619>]    Not tainted VLI
>  [148475.651383] EFLAGS: 00010287   (2.6.13-rc5sand4)

Can you tell us exactly which kernel this is based on?  If it's 2.6.13-rc5
then it would be better to be testing 2.6.13-rc5-git<latest>, because some
net fixes have been recently merged.

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