Re: 4.4-rc3, KVM, br0 and instant hang

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"Jens" == Jens Axboe [off-list ref] writes:

Jens> On 12/05/2015 10:31 AM, John Stoffel wrote:

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"John" == John Stoffel [off-list ref] writes:

John> On Fri, Dec 04, 2015 at 11:28:33PM -0500, John Stoffel wrote:

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On my most recent bootup, I thought it was ok, since the VMs worked
for a while (10 minutes) and I was starting to re-compile the kernel
again to make more modules compiled in.  No luck, I got the following
crash dump (partial) on my netconsole box.

[ 1434.266524] ------------[ cut here ]------------
[ 1434.266643] WARNING: CPU: 2 PID: 179 at block/blk-merge.c:435 blk_rq_map_sg+0x2d9/0x2eb()

Jens> This is fixed in current -git, as of a few days ago.

Thanks!  I'll try that out and see how stable it is.  I assume it
doesn't matter if it's a deadline or cfq scheduler?

In any case, I see the pull in Linus' tree and I'm building a kernel
now to play with.

Thanks!
John