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charset="us-ascii"; Format="flowed" Sender: devel-bounces@openvz.org Errors-To: devel-bounces@openvz.org On 10/29/26 13:05, Konstantin Khorenko wrote: > > -- > Best regards, > > Konstantin Khorenko, > Virtuozzo Linux Kernel Team > > On 10/28/26 09:14, Alexander Ivanov wrote: > > The second > > submission also overwrites bio[], bio_nr and the iovecs of bios that > > are still in flight. > > It also frees the bounce buffer and bio[] of the first submission under > bios that are still in flight, so this is a use-after-free, not only a > counter leak. Worth a sentence here. > > > + if (unlikely(req->inflight)) > > + return -EBUSY; > > Please add a vhostblk_vq_err() here naming the head. Now the host log > only shows the caller's generic "Failed to process guest request" with > -16. Fixed in the next version. > > A separate ticket, not for this patch: vhost_blk_req_done() ignores a > failed vhost_vq_work_queue(). After vhost_worker_killed() (QEMU > SIGKILLed with bios in flight) vq->worker is NULL, the completion is > lost, forget_request() never runs and release hangs in > vhost_blk_flush() the same way. > > Please file a ticket an post it here for the reference. > > Reviewed-by: Konstantin Khorenko https://virtuozzo.atlassian.net/browse/VSTOR-152380 > > -- > Best regards, > > Konstantin Khorenko, > Virtuozzo Linux Kernel Team _______________________________________________ Devel mailing list Devel@openvz.org https://lists.openvz.org/mailman/listinfo/devel