Bug 1392359

Summary: [abrt] qemu-img: strrchr(): qemu-img killed by SIGSEGV: TAINTED
Product: Red Hat Enterprise Linux 7 Reporter: Kevin Wolf <kwolf>
Component: qemu-kvm-rhevAssignee: Kevin Wolf <kwolf>
Status: CLOSED NOTABUG QA Contact: Ping Li <pingl>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 7.3CC: aliang, chayang, coli, hhan, juzhang, michen, mrezanin, ngu, pingl, virt-maint, xuwei
Target Milestone: rc   
Target Release: ---   
Hardware: x86_64   
OS: Unspecified   
URL: https://retrace.fedoraproject.org/faf/reports/bthash/96bc40bb944e1bb40a32bb19a182d102ce00f2c7
Whiteboard: abrt_hash:19eca6ee1558e2b40b3f7f59ad89eed8a80e648b;
Fixed In Version: qemu-kvm-rhev-2.8.0-1.el7 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: 1392298 Environment:
Last Closed: 2017-04-25 09:14:36 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1392298    
Bug Blocks:    

Description Kevin Wolf 2016-11-07 10:10:21 UTC 
This affects qemu-kvm-rhev in 7.3 as well.


+++ This bug was initially created as a clone of Bug #1392298 +++

Description of problem:
Command `qemu info nfs://localhost`

Version-Release number of selected component:
qemu-img-2.7.0-7.fc26

Additional info:
reporter:       libreport-2.8.0
backtrace_rating: 4
cmdline:        qemu-img info nfs://localhost
crash_function: strrchr
executable:     /usr/bin/qemu-img
global_pid:     30089
kernel:         4.9.0-0.rc3.git1.1.fc26.x86_64
pkg_fingerprint: 812A 6B4B 64DA B85D
pkg_vendor:     Fedora Project
runlevel:       N 5
type:           CCpp
uid:            1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 strrchr at ../sysdeps/x86_64/strrchr.S:32
 #1 nfs_client_open at /usr/src/debug/qemu-2.7.0/block/nfs.c:300
 #2 nfs_file_open at /usr/src/debug/qemu-2.7.0/block/nfs.c:447
 #3 bdrv_open_common at /usr/src/debug/qemu-2.7.0/block.c:984
 #4 bdrv_open_inherit at /usr/src/debug/qemu-2.7.0/block.c:1687
 #5 bdrv_open_child at /usr/src/debug/qemu-2.7.0/block.c:1449
 #6 bdrv_open_inherit at /usr/src/debug/qemu-2.7.0/block.c:1648
 #7 bdrv_open at /usr/src/debug/qemu-2.7.0/block.c:1778
 #8 blk_new_open at /usr/src/debug/qemu-2.7.0/block/block-backend.c:160
 #9 img_open_file at /usr/src/debug/qemu-2.7.0/qemu-img.c:296


--- Additional comment from Kevin Wolf on 2016-11-07 11:00:36 CET ---

Fixed with upstream commits 94d6a7a7 and aa2623d8. The first one does the actual
fix (by rewriting the code), but it doesn't build without the second commit.

Resetting the assignee as I can't change Fedora packages.
Comment 3 Kevin Wolf 2017-04-25 09:14:36 UTC 
Ping Li pointed out that we don't even compile in the NFS driver in RHEL, so this
bug report is obviously invalid here. It is valid only for Fedora. Sorry for the
noise.

(But I did check that it is indeed fixed in our source tree, so even if we
decide to enable the driver one day, we're okay.)