Messages in this thread | | | Date | Wed, 11 Apr 2001 18:20:29 +0100 (IST) | From | Dave Airlie <> | Subject | RE: skb allocation problems (More Brain damage!) |
| |
What compiler are you using to compile the kernel?
Dave.
On Wed, 11 Apr 2001 Imran.Patel@nokia.com wrote:
> > Well, I don't know then. You have to debug it. It's probably > > something stupid > > (if fundamental services like alloc_skb/kfree_skb were > > completely buggy > > someone surely would have noticed earlier) > > yep, at first i thought it was because of sume stupidity in my module...but > now it seems that actually it is not my code which is doing something > stupid....just now i have found out that even simple ping faces similar > problems ....here is the output that i get when i ping from the host > 192.168.102.29 (runs 2.4.1) to 192.168.102.22 (runs 2.4.3) (Note:I don't > insert any kernel modules of my own on these machines): > > > PING 192.168.102.22 (192.168.102.22) from 192.168.102.29 : 100(128) bytes of > data. > 108 bytes from hobbes.sr.ntc.nokia.com (192.168.102.22): icmp_seq=0 ttl=255 > time=36.5 ms > wrong data byte #36 should be 0x24 but was 0x45 > 19 45 d4 3a e 7a a 0 8 9 a b c d e f 10 11 12 13 14 15 16 17 18 19 > 1a 1b 1c 1d 1e 1f > 20 21 22 23 45 0 0 80 0 0 40 0 ff 1 2d f8 c0 a8 66 16 c0 a8 66 1d 0 > 0 0 0 4 c 0 0 > 19 45 d4 3a e 7a a 0 8 9 a b c d e f 10 11 12 13 14 15 16 17 18 19 > 1a 1b > > --- 192.168.102.22 ping statistics --- > 1 packets transmitted, 1 packets received, 0% packet loss > round-trip min/avg/max = 36.5/36.5/36.5 ms > > > Note that the problem starts with byte #36 which goes on like " 45 0 0 80 0 > ......." which is in fact the outer IP header!! So certainly there are > buffer overruns on the other end (host 192.168.102.22).... > > And as a I said earlier, only ping packets with size within certain range > create this problem......Something is terribly wrong here!! But as I am not > a Linux mm guru, i can't tell what is wrong here! > > > regards, > imran > >
-- David Airlie, Software Engineer http://www.skynet.ie/~airlied / airlied@skynet.ie pam_smb / Linux DecStation / Linux VAX / ILUG person
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |