On Mon, Jan 18, 2016 at 08:30:21PM +0100, Mike Belopuhov wrote: > On Mon, Jan 18, 2016 at 20:25 +0100, Mike Belopuhov wrote: > > On Sun, Jan 17, 2016 at 20:46 -0800, Jonathon Sisson wrote: > > > Hi, > > > > > > First off, thank you for OpenBSD in general, and thank you specifically > > > for the PV drivers on OpenBSD =) The day of migrating workloads to AWS > > > gets ever closer for me, and I appreciate everything the OpenBSD dev > > > team does. > > > > > > I've found what appears to be a repeatable crash that results in this: > > > > > > panic: xnf0: save vs spell: 214 > > > > > > Stopped at Debugger+0x9: leave > > > TID PID UID PRFLAGS PFLAGS CPU COMMAND > > > 14532 9243 0 0x3 0x4000000 1 python2.7 > > > * 7215 9243 0 0x3 0x4000000 0 python2.7 > > > > > > Debugger() at Debugger+0x9 > > > panic() at panic+0xfe > > > xnf_encap() at xnf_encap+0x1a9 > > > xnf_start() at xnf_start+0x7f > > > ifq_serialize() at ifq_serialize+0xd9 > > > if_enqueue() at if_enqueue+0x71 > > > ether_output() at ether_output+0x166 > > > ip_output() at ip_output+0x6d3 > > > tcp_output() at tcp_output+0x87e > > > tcp_usrreq() at tcp_usrreq+0x3fc > > > sosend() at sosend+0x3d8 > > > dofilewritev() at dofilewritev+0x205 > > > sys_write() at sys_write+0x89 > > > syscall() at syscall+0x368 > > > --- syscall (number 4) --- > > > end of kernel > > > end trace frame: 0x9a8c96a2800, count: 1 > > > 0x9a91790279a: > > > --db_more-- > > > > > > I'm unable to run further commands at the console, as AWS does not > > > provide console. > > > > > > I'm using this test machine to build CURRENT and upload it to an s3 > > > bucket that I've been using for STABLE builds. The python code is > > > the awscli installed via py-pip running on Python 2.7.11. The precise > > > command is: > > > > > > aws s3 sync /usr/rel/ s3://$AWS_BUCKET_NAME/path/ > > > > > > If there is any further testing I can provide, I am more than happy > > > to provide any details you need. > > > > > > -Jonathon > > > > > > > Can you please try the diff below on top of a -current kernel > > (I've pushed some additional Xen fixes just now). > > > > You should be able to copy the kernel into the AWS instance. > > > > My math wasn't correct here and txeof would unload a chain before > > we would've processed all descriptors/fragments. > > > > A slight amendment to the diff (forgot one chunk). > Updated sources, applied the patch and recompiled kernel.
I can't reproduce now with the same upload commands. Even with a bit heavier testing I've been unable to get the instance to panic again. Thanks! I really appreciate the PV drivers =) -Jonathon
