Re: Segfault in hw/scsi/scsi-disk.c caused by null pointer

2022-08-09 Thread Peter Maydell
On Tue, 9 Aug 2022 at 17:26, Denis Krienbühl wrote: > On 9 Aug 2022, at 18:15, Peter Maydell wrote: >> My wild guess is that there's a race condition somewhere such >> that when you're doing this huge amount of detaches, very rarely >> a disk is detached and deleted but this INQUIRY request is

Re: Segfault in hw/scsi/scsi-disk.c caused by null pointer

2022-08-09 Thread Denis Krienbühl
> On 9 Aug 2022, at 18:15, Peter Maydell wrote: > > My wild guess is that there's a race condition somewhere such > that when you're doing this huge amount of detaches, very rarely > a disk is detached and deleted but this INQUIRY request is > incorrectly still sent to the disk (which being a

Re: Segfault in hw/scsi/scsi-disk.c caused by null pointer

2022-08-09 Thread Peter Maydell
On Tue, 9 Aug 2022 at 16:37, Denis Krienbühl wrote: > We are running a Ceph 15.2.16 cluster at work, connect VMs to it using > librbd1 14.2.22, running on the QEMU 4.2 release by Ubuntu’s Cloud Archive > (4.2-3ubuntu6.23~cloud0). > > A few of our VMs randomly trigger a segfault in

Segfault in hw/scsi/scsi-disk.c caused by null pointer

2022-08-09 Thread Denis Krienbühl
Hi We are running a Ceph 15.2.16 cluster at work, connect VMs to it using librbd1 14.2.22, running on the QEMU 4.2 release by Ubuntu’s Cloud Archive (4.2-3ubuntu6.23~cloud0). A few of our VMs randomly trigger a segfault in qemu-system-x86_64. This seems to only happen when lots of volume