Bug List: (19 of 104)
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Bug 1745822 - qemu-kvm core dumped when hotplug 384 vcpu to win2019 guest
Summary: qemu-kvm core dumped when hotplug 384 vcpu to win2019 guest
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: qemu-kvm
Version: 8.1
Hardware: x86_64
OS: Windows
low
low
Target Milestone: rc
: ---
Assignee: Amnon Ilan
QA Contact: Yiqian Wei
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2019-08-27 03:48 UTC by Yiqian Wei
Modified: 2021-01-25 09:25 UTC (History)
8 users (show)

Fixed In Version: qemu-kvm-4.2.0-25.module+el8.3.0+6986+29a4dcd7
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2021-01-24 15:48:35 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
execute hotplug_384vcpu.sh script (1.82 KB, application/x-shellscript)
2019-08-27 03:48 UTC, Yiqian Wei 		no flags Details
View All

Description Yiqian Wei 2019-08-27 03:48:12 UTC 
Created attachment 1608375 [details]
execute hotplug_384vcpu.sh script

Description of problem:
In the hotplug 384 vcpu process,qemu-kvm core dump 

Version-Release number of selected component (if applicable):
host version:
qemu-kvm-2.12.0-85.module+el8.1.0+4046+aa244b40.x86_64
kernel-4.18.0-136.el8.x86_64
seabios-1.11.1-4.module+el8.1.0+4010+d6842f29.x86_64

How reproducible:
100%

Steps to Reproduce:
1.execute "hotplug_384vcpu.sh" script
#sh hotplug_384vcpu.sh q35

Actual results: qemu-kvm core dumped
...
(qemu) QEMU 2.12.0 monitor - type 'help' for more information
(qemu) device_add SandyBridge-x86_64-cpu,socket-id=1,core-id=41,thread-id=1,id=core179
(qemu) free(): invalid next size (normal)
Ncat: Connection reset by peer.
hotplug_384vcpu.sh: line 63: 208589 Aborted                 (core dumped) $CLI
Ncat: Connection refused.
Ncat: Connection refused
...

Expected results:
qemu-kvm no core dumped,can hotplug 384 vcpu to win2019 guest,guest work well

Additional info:
1)host name:lenovo-sr950-01.khw2.lab.eng.bos.redhat.com
2)with rhel8.1.0 guest,not hit this issue.
3)(gdb) bt
#0  0x00007faeea4d38df in raise () at /lib64/libc.so.6
#1  0x00007faeea4bdcf5 in abort () at /lib64/libc.so.6
#2  0x00007faeea516c17 in __libc_message () at /lib64/libc.so.6
#3  0x00007faeea51d53c in .annobin_top_check.start () at /lib64/libc.so.6
#4  0x00007faeea51ee3c in _int_free () at /lib64/libc.so.6
#5  0x00007faeeef6d2e2 in g_free () at /lib64/libglib-2.0.so.0
#6  0x0000559f1e20d3c9 in m_free ()
#7  0x0000559f1e211846 in tcp_input ()
#8  0x0000559f1e20cbb0 in slirp_input ()
#9  0x0000559f1e1fcaa4 in net_slirp_receive ()
#10 0x0000559f1e1f4f3e in qemu_deliver_packet_iov ()
#11 0x0000559f1e1f7858 in qemu_net_queue_send_iov ()
#12 0x0000559f1e1f7dbb in net_hub_port_receive_iov ()
#13 0x0000559f1e1f4e77 in qemu_deliver_packet_iov ()
#14 0x0000559f1e1f7858 in qemu_net_queue_send_iov ()
#15 0x0000559f1e18c3b1 in net_tx_pkt_do_sw_fragmentation ()
#16 0x0000559f1e18d033 in net_tx_pkt_send ()
#17 0x0000559f1e1912c8 in e1000e_start_xmit.isra ()
#18 0x0000559f1e1913d1 in e1000e_set_tdt ()
#19 0x0000559f1e01a596 in memory_region_write_accessor ()
#20 0x0000559f1e0189e6 in access_with_adjusted_size ()
#21 0x0000559f1e01c84a in memory_region_dispatch_write ()
#22 0x0000559f1dfcaaa3 in flatview_write ()
#23 0x0000559f1dfcf243 in address_space_write ()
#24 0x0000559f1e02b878 in kvm_cpu_exec ()
#25 0x0000559f1e00821e in qemu_kvm_cpu_thread_fn ()
#26 0x00007faeea8672de in start_thread () at /lib64/libpthread.so.0
#27 0x00007faeea598133 in clone () at /lib64/libc.so.6
Comment 2 Yiqian Wei 2019-08-28 03:17:57 UTC 
reproduce this bug with "qemu-kvm-2.12.0-65.module+el8.0.0+4068+6a1b8d73.4.x86_64",so this bug is not regression.
Comment 3 Yiqian Wei 2019-08-28 05:34:17 UTC 
cannot reproduce this bug with fast train.

fast train version:
qemu-kvm-4.1.0-5.module+el8.1.0+4076+b5e41ebc.x86_64
Comment 4 Yiqian Wei 2019-08-28 07:15:38 UTC 
can reproduce this bug with slow train.

host version:
qemu-kvm-2.12.0-85.module+el8.1.0+4046+aa244b40.x86_64
kernel-4.18.0-136.el8.x86_64
seabios-1.11.1-4.module+el8.1.0+4010+d6842f29.x86_64

 
(gdb) bt
#0  0x00007ffff2fb2050 in __condvar_dec_grefs () at /lib64/libpthread.so.0
#1  0x00007ffff2fb24a6 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#2  0x0000555555b7145d in qemu_cond_wait_impl ()
#3  0x0000555555877ab3 in qemu_wait_io_event ()
#4  0x00005555558791f8 in qemu_kvm_cpu_thread_fn ()
#5  0x00007ffff2fac2de in start_thread () at /lib64/libpthread.so.0
#6  0x00007ffff2cdd133 in clone () at /lib64/libc.so.6
(gdb)
Comment 8 Ademar Reis 2020-02-05 23:03:58 UTC 
QEMU has been recently split into sub-components and as a one-time operation to avoid breakage of tools, we are setting the QEMU sub-component of this BZ to "General". Please review and change the sub-component if necessary the next time you review this BZ. Thanks
Comment 9 Yiqian Wei 2020-06-15 11:32:57 UTC 
reproduce this bug version:
qemu-kvm-2.12.0-99.module+el8.2.0+6760+8b4be739.1.x86_64
kernel-4.18.0-213.el8.x86_64
virtio-win-prewhql-0.1-185
guest:win2019

verified this bug version:
qemu-kvm-4.2.0-25.module+el8.3.0+6986+29a4dcd7.x86_64
kernel-4.18.0-213.el8.x86_64
virtio-win-prewhql-0.1-185
guest:win2019


changed to verified status
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Bug List: (19 of 104)