Bug 1809553
| Summary: | core dump instead of error message on '' backing file | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux Advanced Virtualization | Reporter: | Attila Fazekas <afazekas> |
| Component: | qemu-kvm | Assignee: | Connor Kuehl <ckuehl> |
| qemu-kvm sub component: | qcow2 | QA Contact: | Xueqiang Wei <xuwei> |
| Status: | CLOSED ERRATA | Docs Contact: | |
| Severity: | medium | ||
| Priority: | low | CC: | ckuehl, coli, jferlan, jinzhao, juzhang, mrezanin, virt-maint |
| Version: | 8.2 | Keywords: | EasyFix, Triaged |
| Target Milestone: | rc | ||
| Target Release: | 8.0 | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | qemu-kvm-5.2.0-1.module+el8.4.0+9091+650b220a | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2021-05-25 06:41:21 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
|
Description
Attila Fazekas
2020-03-03 12:00:23 UTC
Reproduced this bug in latest rhel8.2.
Tested with:
qemu-kvm-4.2.0-13.module+el8.2.0+5898+fb4bceae
kernel-4.18.0-176.el8
Steps:
# qemu-img create -f qcow2 -b '' foo
qemu-img: block.c:5811: bdrv_img_create: Assertion `full_backing' failed.
Aborted (core dumped)
(gdb) bt
#0 0x00007f63f144770f in raise () from /lib64/libc.so.6
#1 0x00007f63f1431b25 in abort () from /lib64/libc.so.6
#2 0x00007f63f14319f9 in __assert_fail_base.cold.0 () from /lib64/libc.so.6
#3 0x00007f63f143fcc6 in __assert_fail () from /lib64/libc.so.6
#4 0x0000555cab927423 in bdrv_img_create (filename=0x7ffe78e89474 "foo", fmt=0x7ffe78e8946a "qcow2", base_filename=<optimized out>,
base_fmt=<optimized out>, options=<optimized out>, img_size=<optimized out>, flags=0, quiet=false, errp=0x7ffe78e87708) at block.c:5811
#5 0x0000555cab913a20 in img_create (argc=6, argv=0x7ffe78e87880) at qemu-img.c:553
#6 0x0000555cab91234d in main (argc=6, argv=<optimized out>) at qemu-img.c:5079
Tried with 8.1 qemu package, hit the same issue. But not with 8.0 qemu package. With 8.1 qemu package. # qemu-img create -f qcow2 -b '' foo qemu-img: block.c:5769: bdrv_img_create: Assertion `full_backing' failed. Aborted (core dumped) # qemu-img --version qemu-img version 4.1.0 (qemu-kvm-4.1.0-23.module+el8.1.1+5748+5fcc84a8.1) Copyright (c) 2003-2019 Fabrice Bellard and the QEMU Project developers With 8.0 package. # qemu-img create -f qcow2 -b '' foo qemu-img: foo: The 'file' block driver requires a file name Could not open backing image to determine size. # qemu-img --version qemu-img version 3.1.0 (qemu-kvm-3.1.0-30.module+el8.0.1+4607+7ea9baa9.2) Copyright (c) 2003-2018 Fabrice Bellard and the QEMU Project developers Tested with qemu 5.1, hit this issue. Versions: kernel-4.18.0-234.el8.x86_64 qemu-kvm-5.1.0-4.module+el8.3.0+7846+ae9b566f # qemu-img create -f qcow2 -b '' foo qemu-img: /builddir/build/BUILD/qemu-5.1.0/block.c:6139: bdrv_img_create: Assertion `full_backing' failed. Aborted (core dumped) A patch for this issue has been accepted upstream: https://lists.gnu.org/archive/html/qemu-devel/2020-08/msg06721.html We'll let the rebase pick this up for RHEL AV 8.4.0 Tested with qemu-kvm-5.2.0-1.module+el8.4.0+9091+650b220a, not hit this issue. Versions: kernel-4.18.0-259.el8.x86_64 qemu-kvm-5.2.0-1.module+el8.4.0+9091+650b220a # qemu-img create -f qcow2 -b '' foo qemu-img: foo: Expected backing file name, got empty string According to Comment 8, set status to VERIFIED. Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (virt:av bug fix and enhancement update), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2021:2098 |