|
From: | Farhan Ali |
Subject: | Re: [Qemu-devel] [PATCH] block/file-posix: add bdrv_attach_aio_context callback for host dev and cdrom |
Date: | Mon, 23 Jul 2018 12:42:02 -0400 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 |
On 07/23/2018 12:30 PM, Stefan Hajnoczi wrote:
On Fri, Jul 20, 2018 at 03:11:14PM -0400, Farhan Ali wrote:I am seeing another issue pop up, in a different test. Even though it's a different assertion, it might be related based on the call trace.Which test case?
This test case involved one guest with 2 disks, with an iothread for each disk. The guest was running a memory workload.
Stack trace of thread 276199: #0 0x000003ff8473e274 raise (libc.so.6) #1 0x000003ff847239a8 abort (libc.so.6) #2 0x000003ff847362ce __assert_fail_base (libc.so.6) #3 0x000003ff8473634c __assert_fail (libc.so.6) #4 0x000002aa30aba0c4 iov_memset (qemu-system-s390x) #5 0x000002aa30aba9a6 qemu_iovec_memset (qemu-system-s390x) #6 0x000002aa30a23e88 qemu_laio_process_completion (qemu-system-s390x)What are the values of laiocb->qiov->size and laiocb->ret?
The laiocb->qiov->size was 4096 and laiocb->ret was 8192
#7 0x000002aa30a23f68 qemu_laio_process_completions (qemu-system-s390x) #8 0x000002aa30a2418e qemu_laio_process_completions_and_submit (qemu-system-s390x) #9 0x000002aa30a24220 qemu_laio_poll_cb (qemu-system-s390x) #10 0x000002aa30ab22c4 run_poll_handlers_once (qemu-system-s390x) #11 0x000002aa30ab2e78 aio_poll (qemu-system-s390x) #12 0x000002aa30a29f4e bdrv_do_drained_begin (qemu-system-s390x) #13 0x000002aa30a2a276 bdrv_drain (qemu-system-s390x) #14 0x000002aa309d45aa bdrv_set_aio_context (qemu-system-s390x) #15 0x000002aa3085acfe virtio_blk_data_plane_stop (qemu-system-s390x) #16 0x000002aa3096994c virtio_bus_stop_ioeventfd.part.1 (qemu-system-s390x) #17 0x000002aa3087d1d6 virtio_vmstate_change (qemu-system-s390x) #18 0x000002aa308e8a12 vm_state_notify (qemu-system-s390x) #19 0x000002aa3080ed54 do_vm_stop (qemu-system-s390x) #20 0x000002aa307bea04 main (qemu-system-s390x) #21 0x000003ff84723dd2 __libc_start_main (libc.so.6) #22 0x000002aa307c0414 _start (qemu-system-s390x) The failing assertion is: qemu-kvm: util/iov.c:78: iov_memset: Assertion `offset == 0' failed.I wonder if the offset is beyond the end of the iovecs. Thanks, Stefan
Thanks Farhan
[Prev in Thread] | Current Thread | [Next in Thread] |