"Brian F. Feldman" <[EMAIL PROTECTED]> wrote: > Thanks for the patches to try! They unfortunately didn't fix the crash I > have, but I found out why it's occurring. > > See ohci.c:1389: > if (std->td.td_cbp != 0) > len -= le32toh(std->td.td_be) - > le32toh(std->td.td_cbp) + 1; > > In one of my transfers (look in my log for the 2560 byte one) that statement > actually adds 8192 to len, which is utterly bogus because you can see it > only allocates 2560 -- hence when it tries to finish the transfer it > memcpy()'s way too much memory and my kernel segfaults. If I #if 0 this out, > I'm left only with "umass0: BBB reset failed, STALLED" messages... which is > a lot better than before! I don't know under what situations that bit of > code makes sense, but it definitely needs more reviewing! > > Please check out my debugging messages and tell me if you see any hints as > to why the transfers are getting stalled. I should have looked at the > debugging messages long ago, I guess. Thanks! > > http://green.homeunix.org/~green/ohci-debugging.txt.gz
BTW, replying to myself -- it seems to be something missing from the multi-allocation transfers (>8KB), because I can do up to 8KB transfers perfectly fine now, but 10KB ones, for example, like mdir(8) does are the ones that give me BBB stalls. -- Brian Fundakowski Feldman \'[ FreeBSD ]''''''''''\ <> [EMAIL PROTECTED] \ The Power to Serve! \ Opinions expressed are my own. \,,,,,,,,,,,,,,,,,,,,,,\ _______________________________________________ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "[EMAIL PROTECTED]"
