Re: [Qemu-block] strange crash in tracked_request_begin

2016-03-08 Thread Stefan Hajnoczi
On Mon, Mar 07, 2016 at 08:00:49PM +0100, Christian Borntraeger wrote: > On 03/07/2016 06:01 PM, Stefan Hajnoczi wrote: > > On Mon, Mar 07, 2016 at 01:29:08PM +0100, Christian Borntraeger wrote: > >> Folks, > >> > >> I had a crash of a qemu guest in tracked_request_begin. > >> The testcase was a gu

Re: [Qemu-block] strange crash in tracked_request_begin

2016-03-07 Thread Christian Borntraeger
On 03/07/2016 06:01 PM, Stefan Hajnoczi wrote: > On Mon, Mar 07, 2016 at 01:29:08PM +0100, Christian Borntraeger wrote: >> Folks, >> >> I had a crash of a qemu guest in tracked_request_begin. >> The testcase was a guest with ramdisk/kernel that reboots in a >> loop. (about 10 times per second) wit

Re: [Qemu-block] strange crash in tracked_request_begin

2016-03-07 Thread Stefan Hajnoczi
On Mon, Mar 07, 2016 at 01:29:08PM +0100, Christian Borntraeger wrote: > Folks, > > I had a crash of a qemu guest in tracked_request_begin. > The testcase was a guest with ramdisk/kernel that reboots in a > loop. (about 10 times per second) with a single null-co disk > attached. No idea how to r

Re: [Qemu-block] strange crash in tracked_request_begin

2016-03-07 Thread Christian Borntraeger
On 03/07/2016 02:35 PM, Paolo Bonzini wrote: > > > On 07/03/2016 13:29, Christian Borntraeger wrote: >> Folks, >> >> I had a crash of a qemu guest in tracked_request_begin. >> The testcase was a guest with ramdisk/kernel that reboots in a >> loop. (about 10 times per second) with a single null-c

[Qemu-block] strange crash in tracked_request_begin

2016-03-07 Thread Christian Borntraeger
Folks, I had a crash of a qemu guest in tracked_request_begin. The testcase was a guest with ramdisk/kernel that reboots in a loop. (about 10 times per second) with a single null-co disk attached. No idea how to reproduce this, seems to be a lucky hit. (gdb) bt #0 0x101db5ba in tracked

Re: [Qemu-block] strange crash in tracked_request_begin

2016-03-07 Thread Paolo Bonzini
On 07/03/2016 13:29, Christian Borntraeger wrote: > Folks, > > I had a crash of a qemu guest in tracked_request_begin. > The testcase was a guest with ramdisk/kernel that reboots in a > loop. (about 10 times per second) with a single null-co disk > attached. Does it use a separate iothread?