On 30/12/2011 8:00 μμ, Konstantinos Skarlatos wrote:
I just tested 3.1.5-1-ARCH on a virtual machine and it works, so it is probably a regression... On the same virtual machine 3.2-rc7 produces input/output error. The virtual machine is a fresh install of arch linux.On 30/12/2011 3:11 μμ, Jeff Layton wrote:I did not get a cFYI output from that test, but i redid a mount-ls-umount and am attaching the tcpdump Also here http://pastebin.com/J20uC6kU you can find the cifsFYI and the contents of /proc/fs/cifs/DebugData form the same testOn Fri, 30 Dec 2011 11:04:59 +0200 Konstantinos Skarlatos<k.skarlatos@xxxxxxxxx> wrote:On 29/12/2011 3:54 μμ, Konstantinos Skarlatos wrote:On Πέμπτη, 29 Δεκέμβριος 2011 3:39:30 μμ, Jeff Layton wrote:On Thu, 29 Dec 2011 12:30:18 +0200 Konstantinos Skarlatos<k.skarlatos@xxxxxxxxx> wrote:On 29/12/2011 4:04 πμ, Jeff Layton wrote:On Thu, 29 Dec 2011 02:08:57 +0200 Konstantinos Skarlatos<k.skarlatos@xxxxxxxxx> wrote:I mount via cifs a windows XP share, df gives me correct sizes, but when I ls the mount point i get input/output error. strace: http://pastebin.com/WXf8M1numount --verbose -t cifs -o username=administrator,password=blahblah//192.168.0.11/jobs /mnt/backups/montaz/jobs mount.cifs kernel mount options:ip=192.168.0.11,unc=\\192.168.0.11\jobs,,ver=1,user=administrator,pass=********df //192.168.0.11/jobs 114464 105196 9268 92% /mnt/backups/montaz/jobs ls /mnt/backups/montaz/jobs/ls: reading directory /mnt/backups/montaz/jobs/: Input/output errortotal 0 the fun thing is that i can cd to a lower level directory, and ls works fine there! only the mount point has the problem ls /mnt/backups/montaz/jobs/test total 44K drwxr-xr-x 1 root root 0 Apr 30 2010 blah blah/ ...... kernel version 3.2rc7 this seems to be related to : https://lkml.org/lkml/2011/8/1/427 Re: [3.0.0+][Regression][Bisected] CIFS: getdents() broken for large dirsHmmm, maybe. What makes you think that it's related? What sort of server are you seeing this against?Windows XP service pack 2 (greek)How many files are in the directory?140 folders and 20 filesAttached is a tcp dump of my session.I tried reproducing this here, but wasn't able to. Testing against my xp box worked fine. Most likely, the FIND_FILE responses are falling afoul of the code in coalesce_t2 or check2ndT2. Unfortunately that code is pretty complicated and I'm not certain what the problem actually is... One thing that's interesting is that the total data being sent in the request is rather large (16336 bytes). I think that's legit, but maybe it's exceeding the end of the buffer once we try to coalesce it. Would it be possible to get the cFYI output from this test?I do not know, and i am a bit afraid to downgrade this machine below 3.0 due to some changes arch linux has introduced recently. I can always set up a few virtual machines though, and i can even request permission from my company to give you shell access if you like. Which kernel versions would you like me to test?Is this a regression? Did it work with earlier kernels and only recently start failing?
here is the relevant pastebin http://pastebin.com/BwX2DqJC and attached is the tcpdumpAs a am a noob to all this, what should I do next in order to help you? maybe compile a 3.1 kernel from official sources to make sure no patches from arch linux interfere?
Attachment:
cifs-traffic.pcap
Description: Binary data
