Re: [bug] stuck localhost TCP connections, v2.6.26-rc3+

Håkon Løvdal
2008-06-19T00:30:34Z

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2008/6/11 Ilpo JÃ¤rvinen <ilpo.jarvinen@helsinki.fi>:> On Wed, 11 Jun 2008, HÃ¥kon LÃ¸vdal wrote:>> I do not have any good explanation (bad memory?). When checking the>> copytest003.capture.bz2 file in the http server storage directory>> I get the same results as you. However I also have the original file>> stored still and comparing them with cmp -l gives>> 20558656 124 104>> so obviously a bit has been flipped.>> ...Yeah, which is a bad thing because now we don't know if that same error> causes the TCP stops too.>>> I have now replaced the erroneous file with a good copy, so you should>> be able to download again.>> I'll have a look if there's some common denominator but this whole issue> might well be due to hw failure.>
Hi. I tested the old pc with memtest86 and memtest86+ for 16 and 50hours without any errors detected, so apparently the ram is ok.
I now just did another test from a freshley booted old pc, standingidle for around 2 hours before I started the testing (no network activitybefore I plugged in the cable just before starting testing).
The copying failed after just 2.62GB, so the logs are short andnice. Stored on same server as earlier, new 2008-06-19 directory. Onething I noticed in the dmesg output on the old pc was the following:
BUG: unable to handle kernel paging request at virtual address ffff3cffprinting eip: ffff3cff *pde = 00793067 *pte = 00000000Oops: 0000 [#1] PREEMPTModules linked in: ...Pid: 18103, comm: sshd Not tainted (2.6.24-gafd564a8 #4)...Call Trace: [<f8c45b39>] nf_conntrack_find_get+0x36/0x3a [nf_conntrack] [<f8c46379>] nf_conntrack_in+0x135/0x3e8 [nf_conntrack] [<c0423c5d>] local_bh_disable+0xa/0xb [<c0626d54>] _read_lock_bh+0x12/0x1a...
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