1096575 – qemu-kvm will core dump when boot two scsi-hd devices with the same "scsi-id and lun"(no specify memory size)

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Bug 1096575 - qemu-kvm will core dump when boot two scsi-hd devices with the same "scsi-id and lun"(no specify memory size)

Summary: qemu-kvm will core dump when boot two scsi-hd devices with the same "scsi-id ...

Keywords:
Status:	CLOSED DUPLICATE of bug 1096576
Alias:	None
Product:	Red Hat Enterprise Linux 7
Classification:	Red Hat
Component:	qemu-kvm
Sub Component:
Version:	7.0
Hardware:	x86_64
OS:	Linux
Priority:	medium
Severity:	medium
Target Milestone:	rc
Target Release:	---
Assignee:	Fam Zheng
QA Contact:	Virtualization Bugs
Docs Contact:
URL:
Whiteboard:
Depends On:
Blocks:	1096577
TreeView+	depends on / blocked

Reported:	2014-05-12 04:53 UTC by Jun Li
Modified:	2014-06-11 06:10 UTC (History)
CC List:	9 users (show)
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Clone Of:
Clones:	1096577 (view as bug list)
Environment:
Last Closed:	2014-06-11 06:10:42 UTC
Target Upstream Version:
Embargoed:

Attachments	(Terms of Use)

Description Jun Li 2014-05-12 04:53:15 UTC

Description of problem:
boot qemu-kvm attach two scsi-hd devices with the same "scsi-id and lun" and do not specify the memory size(using the defaults memory size), qemu-kvm will core dump.

Version-Release number of selected component (if applicable):
qemu-kvm-1.5.3-60.el7_0.2.x86_64
3.10.0-123.el7.x86_64
seabios-bin-1.7.2.2-12.el7.x86_64

How reproducible:
100%

Steps to Reproduce:
1.boot qemu-kvm using the following cli:
# gdb --agrs /usr/libexec/qemu-kvm \
-device virtio-scsi-pci,id=scsi0 \
-drive file=/home/juli/sn1.qcow2,if=none,id=disk1 \
-device scsi-hd,drive=disk1,id=sys-disk1,scsi-id=0,lun=0,bootindex=0 \
-boot menu=on -monitor stdio -S \
-drive file=/home/juli/sn1.qcow2,if=none,id=disk2 \
-device scsi-hd,drive=disk2,id=sys-disk2,scsi-id=0,lun=0,bootindex=3 
2.
3.

Actual results:
(gdb) bt
#0  qdev_get_fw_dev_path_helper (dev=0x555556b00480, 
    p=p@entry=0x7fffffffddd0 "0", size=128) at hw/core/qdev.c:506
#1  0x00005555556718b3 in qdev_get_fw_dev_path (dev=<optimized out>)
    at hw/core/qdev.c:525
#2  0x00005555557439c5 in get_boot_devices_list (
    size=size@entry=0x7fffffffded0) at vl.c:1229
#3  0x00005555556a1220 in fw_cfg_machine_ready (n=0x555556aa6bd0, 
    data=<optimized out>) at hw/nvram/fw_cfg.c:503
#4  0x0000555555854ca7 in notifier_list_notify (
    list=list@entry=0x5555560602c8 <machine_init_done_notifiers>, 
    data=data@entry=0x0) at util/notify.c:39
#5  0x0000555555601ec4 in qemu_run_machine_init_done_notifiers () at vl.c:2692
#6  main (argc=<optimized out>, argv=<optimized out>, envp=<optimized out>)
    at vl.c:4333


Expected results:
No core dump.

Additional info:
When set -m 512M, qemu-kvm will core dump, too.
# gdb --args /usr/libexec/qemu-kvm -device virtio-scsi-pci,id=scsi0 -drive file=/home/juli/sn1.qcow2,if=none,id=disk1 -device scsi-hd,drive=disk1,id=sys-disk1,scsi-id=0,lun=0,bootindex=0 -boot menu=on -monitor stdio -S -drive file=/home/juli/sn1.qcow2,if=none,id=disk2 -device scsi-hd,drive=disk2,id=sys-disk2,scsi-id=0,lun=0,bootindex=3 -m 512M
(gdb) bt
#0  0x0000555555671027 in qdev_get_fw_dev_path_helper (dev=0x7, 
    p=p@entry=0x7fffffffddc0 "0", size=128) at hw/core/qdev.c:504
#1  0x000055555567103d in qdev_get_fw_dev_path_helper (dev=0x555556ac61c0, 
    p=p@entry=0x7fffffffddc0 "0", size=128) at hw/core/qdev.c:506
#2  0x00005555556718b3 in qdev_get_fw_dev_path (dev=<optimized out>)
    at hw/core/qdev.c:525
#3  0x00005555557439c5 in get_boot_devices_list (
    size=size@entry=0x7fffffffdec0) at vl.c:1229
#4  0x00005555556a1220 in fw_cfg_machine_ready (n=0x555556acc260, 
    data=<optimized out>) at hw/nvram/fw_cfg.c:503
#5  0x0000555555854ca7 in notifier_list_notify (
    list=list@entry=0x5555560602c8 <machine_init_done_notifiers>, 
    data=data@entry=0x0) at util/notify.c:39
#6  0x0000555555601ec4 in qemu_run_machine_init_done_notifiers () at vl.c:2692
#7  main (argc=<optimized out>, argv=<optimized out>, envp=<optimized out>)
    at vl.c:4333
----
When set memory size >=889M, will no core dump.

Comment 2 Fam Zheng 2014-06-11 06:10:42 UTC


*** This bug has been marked as a duplicate of bug 1096576 ***

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