> -----Original Message----- > From: Xen-devel [mailto:[email protected]] On Behalf > Of Olaf Hering > Sent: 11 December 2018 15:31 > To: [email protected]; [email protected] > Subject: [Xen-devel] memory leak in block/xen_disk in qemu-3.x > > What are the live time rules of ioreq->buf? > > In my testing the memory usage of qemu is constantly growing from about > 250MB to several GB after a few days.
Are you perhaps running into the problem addressed by this patch? https://lists.gnu.org/archive/html/qemu-devel/2018-11/msg00244.html Paul > > Some debugging shows that ioreq_runio_qemu_aio() overwrites ioreq->buf, > which contributes to the leak. In addition, ioreq_reset() also just > globbers iorew->buf. While this was observed with a backport of xen_disk > changes to qemu-2.9, the code in xen_disk.c did not change in this > regard. I changed the code to call qemu_vfree(ioreq->buf) in the few > places that globber the pointer, that fixes the leak for me. > > Right now neither qemu-3.0 nor 3.1 for me, so I can not test > qemu.git#master if it eventually behaves different than > qemu.git#stable-2.9+backport. > > Olaf _______________________________________________ Xen-devel mailing list [email protected] https://lists.xenproject.org/mailman/listinfo/xen-devel
