Bug 1152875
| Summary: | qemu core dumped when hotplug memory twice with size=0.1G option | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Lin Chen <linchen> |
| Component: | qemu-kvm-rhev | Assignee: | Igor Mammedov <imammedo> |
| Status: | CLOSED ERRATA | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | 7.1 | CC: | drjones, hhuang, huding, juzhang, michen, mrezanin, virt-maint, xfu |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | qemu 2.2 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2015-12-04 16:19:18 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: | |||
caused by alignment issue, fix are posted upstream "not allowing non page aligned sizes/addresses" along with fixes for bug 1155581 fixed upstream in 2.2 release, we should get fixes in RHEV7.2 which is palnned to be based on 2.3 please retest when qemu 7.2 build is available. reproduce: host kernel:3.10.0-267.el7.x86_64 host qemu: qemu-kvm-rhev-2.1.2-21.el7.x86_64 QE retested this bug on the above environment,then got the same result. So, the bug is reproduced on the above environment. verify: host kernel:3.10.0-267.el7.x86_64 host qemu: qemu-kvm-rhev-2.3.0-4.el7.x86_64 QE retested this bug on the above environment. After hot-plug 0.1G memory, qemu didn't core dump and got error info:backend memory size must be multiple of 0x200000. So, the bug fixed. Based on Comment 7, set this bug to VERIFIED. Best regards, Huiqing 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, 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://rhn.redhat.com/errata/RHBA-2015-2546.html |
Description of problem: qemu core dumped when hotplug memory twice with size=0.1G option first time: (qemu) object_add memory-backend-ram,id=mem0,size=0.1G (qemu) device_add pc-dimm,id=dimm0,memdev=mem0 -->hotplug memory successfully second time: (qemu) object_add memory-backend-ram,id=mem1,size=0.1G (qemu) device_add pc-dimm,id=dimm1,memdev=mem1 -->get error message:kvm_set_phys_mem: error registering slot: Invalid argument And qemu core dumped Version-Release number of selected component (if applicable): inside host: uname -r 3.10.0-186.el7.x86_64 rpm -qa|grep qemu qemu-kvm-rhev-2.1.2-3.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1.boot guest with: /usr/libexec/qemu-kvm -m 4G,slots=10,maxmem=8G -numa node,cpus=0,nodeid=0 -numa node,cpus=1,nodeid=1 2.hotplug memory twice with size=0.1G option first time: (qemu) object_add memory-backend-ram,id=mem0,size=0.1G (qemu) device_add pc-dimm,id=dimm0,memdev=mem0 second time: (qemu) object_add memory-backend-ram,id=mem1,size=0.1G (qemu) device_add pc-dimm,id=dimm1,memdev=mem1 Actual results: first time: hotplug memory successfully second time: get error message:kvm_set_phys_mem: error registering slot: Invalid argument And qemu core dumped Expected results: hotplug memory successfully and shouldn't let qemu core dump when hotplug memory second time with size=0.1G option. Additional info: gdb information: (gdb) bt #0 0x00007ffff1ea1989 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56 #1 0x00007ffff1ea3098 in __GI_abort () at abort.c:90 #2 0x0000555555652dd7 in kvm_set_phys_mem (section=0x7fffffffc1a0, add=true) at /usr/src/debug/qemu-2.1.2/kvm-all.c:694 #3 0x0000555555654fdf in address_space_update_topology_pass (as=as@entry=0x555555cb03a0 <address_space_memory>, adding=adding@entry=true, new_view=<optimized out>, new_view=<optimized out>, old_view=0x5555563b4790, old_view=0x5555563b4790) at /usr/src/debug/qemu-2.1.2/memory.c:753 #4 0x00005555556570a0 in address_space_update_topology (as=0x555555cb03a0 <address_space_memory>) at /usr/src/debug/qemu-2.1.2/memory.c:768 #5 memory_region_transaction_commit () at /usr/src/debug/qemu-2.1.2/memory.c:809 #6 0x0000555555686b1c in pc_dimm_plug (errp=0x7fffffffc440, dev=0x5555563b0030, hotplug_dev=<optimized out>) at /usr/src/debug/qemu-2.1.2/hw/i386/pc.c:1614 #7 pc_machine_device_plug_cb (hotplug_dev=<optimized out>, dev=0x5555563b0030, errp=0x7fffffffc440) at /usr/src/debug/qemu-2.1.2/hw/i386/pc.c:1628 #8 0x0000555555782d65 in device_set_realized (obj=<optimized out>, value=<optimized out>, errp=0x7fffffffc568) at hw/core/qdev.c:850 #9 0x00005555557ff23e in property_set_bool (obj=0x5555563b0030, v=<optimized out>, opaque=0x5555563b09a0, name=<optimized out>, errp=0x7fffffffc568) at qom/object.c:1473 #10 0x00005555558019e7 in object_property_set_qobject (obj=0x5555563b0030, value=<optimized out>, name=0x5555558c0430 "realized", errp=0x7fffffffc568) at qom/qom-qobject.c:24 #11 0x0000555555800600 in object_property_set_bool (obj=obj@entry=0x5555563b0030, value=value@entry=true, name=name@entry=0x5555558c0430 "realized", errp=errp@entry=0x7fffffffc568) at qom/object.c:888 #12 0x000055555570fb2f in qdev_device_add (opts=opts@entry=0x5555563b4fa0) at qdev-monitor.c:554 #13 0x000055555570ff0a in do_device_add (mon=<optimized out>, qdict=<optimized out>, ret_data=<optimized out>) at qdev-monitor.c:677 #14 0x000055555564c08f in handle_user_command (mon=mon@entry=0x5555561a5400, cmdline=<optimized out>) at /usr/src/debug/qemu-2.1.2/monitor.c:4112 #15 0x000055555564c467 in monitor_command_cb (opaque=0x5555561a5400, cmdline=<optimized out>, readline_opaque=<optimized out>) at /usr/src/debug/qemu-2.1.2/monitor.c:5156 #16 0x000055555588ebdf in readline_handle_byte (rs=0x55555630de30, ch=<optimized out>) at util/readline.c:391 #17 0x000055555564c3f7 in monitor_read (opaque=<optimized out>, buf=<optimized out>, size=<optimized out>) at /usr/src/debug/qemu-2.1.2/monitor.c:5139 #18 0x000055555571bcd1 in qemu_chr_be_write (len=<optimized out>, buf=0x7fffffffc750 "\r\020", s=0x555556175d30) at qemu-char.c:213 #19 fd_chr_read (chan=<optimized out>, cond=<optimized out>, opaque=0x555556175d30) at qemu-char.c:920 #20 0x00007ffff64b2ac6 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0 #21 0x0000555555839048 in glib_pollfds_poll () at main-loop.c:190 #22 os_host_main_loop_wait (timeout=<optimized out>) at main-loop.c:235 #23 main_loop_wait (nonblocking=<optimized out>) at main-loop.c:484 #24 0x000055555561cc1e in main_loop () at vl.c:2010 ---Type <return> to continue, or q <return> to quit--- #25 main (argc=<optimized out>, argv=<optimized out>, envp=<optimized out>) at vl.c:4552