Uploaded image for project: 'RHEL'
  1. RHEL
  2. RHEL-17369

[rt][post-copy migration] qemu-kvm: ../block/qcow2.c:5263: ImageInfoSpecific *qcow2_get_specific_info(BlockDriverState *, Error **): Assertion `false' failed.

    • qemu-kvm-8.2.0-5.el9
    • None
    • Moderate
    • CustomerScenariosInitiative
    • rhel-sst-virtualization
    • ssg_virtualization
    • 21
    • 26
    • None
    • QE ack
    • False
    • Hide

      None

      Show
      None
    • None
    • Red Hat Enterprise Linux
    • None
    • x86_64
    • Linux
    • None

      What were you trying to do that didn't work?
      The qemu-kvm crashes when post-copy migrating the rt-VM with vhost-user interfaces for multi times

      Please provide the package NVR for which bug is seen:
      host:
      qemu-kvm-8.1.0-4.el9.x86_64
      5.14.0-389.el9.x86_64+rt
      guest:
      5.14.0-389.el9.x86_64+rt

      How reproducible:
      100%

      Steps to reproduce
      1. create a ovs-dpdk
      2. start a rt-VM with three 1Q vhost-user interfaces
      3. post-copy migrate the VM
      4. repeat the migration multiple times

      In my case, the migration fails at the 3th times

      5. check the migration job/qemu-kvm log

      On the source host:

      initiating migration
      qemu-kvm: ../softmmu/runstate.c:199: void runstate_set(RunState): Assertion `new_state < RUN_STATE__MAX' failed.
       shutting down, reason=crashed
      

      On the target host:

      # cat /var/log/libvirt/qemu/rhel9.4.log
      qemu-kvm: ../block/qcow2.c:5263: ImageInfoSpecific *qcow2_get_specific_info(BlockDriverState *, Error **): Assertion `false' failed.
      shutting down, reason=failed
      

      Expected results
      The qemu-kvm will not crash

      Actual results
      The qemu-kvm crashes

      Additional info:
      (1) the VM's qemu-kvm coredump info on the source host:

      # coredumpctl info 
                 PID: 6701 (qemu-kvm)
                 UID: 0 (root)
                 GID: 107 (qemu)
              Signal: 6 (ABRT)
           Timestamp: Tue 2023-11-28 04:07:24 EST (1h 8min ago)
        Command Line: /usr/libexec/qemu-kvm -name guest=rhel9.4,debug-threads=on -S -object $'{"qom-type":"secret","id":"masterKey0","format>    Executable: /usr/libexec/qemu-kvm
       Control Group: /machine.slice/machine-qemu\x2d2\x2drhel9.4.scope/libvirt/emulator
                Unit: machine-qemu\x2d2\x2drhel9.4.scope
               Slice: machine.slice
             Boot ID: 2a7bcb0dc2b2436abbacb3aa393dfe7f
          Machine ID: 09f2cab20f914272bf3d34215f7fe2ab
            Hostname: dell-per740-03.lab.eng.pek2.redhat.com
             Storage: /var/lib/systemd/coredump/core.qemu-kvm.0.2a7bcb0dc2b2436abbacb3aa393dfe7f.6701.1701162444000000.zst (present)
        Size on Disk: 1.5M
             Message: Process 6701 (qemu-kvm) of user 0 dumped core.
                      
                      Stack trace of thread 6831:
                      #0  0x00007f246e4e265c __pthread_kill_implementation (libc.so.6 + 0xa365c)
                      #1  0x00007f246e493d06 raise (libc.so.6 + 0x54d06)
                      #2  0x00007f246e4677f3 abort (libc.so.6 + 0x287f3)
                      #3  0x00007f246e46771b __assert_fail_base.cold (libc.so.6 + 0x2871b)
                      #4  0x00007f246e48cca6 __assert_fail (libc.so.6 + 0x4dca6)
                      #5  0x00005637a610d8db runstate_set (qemu-kvm + 0x53b8db)
                      #6  0x00005637a613d60c migration_thread (qemu-kvm + 0x56b60c)
                      #7  0x00005637a65bcfea qemu_thread_start.llvm.17279737596791441160 (qemu-kvm + 0x9eafea)
                      #8  0x00007f246e4e0912 start_thread (libc.so.6 + 0xa1912)
                      #9  0x00007f246e47e314 __clone (libc.so.6 + 0x3f314)
                      
                      Stack trace of thread 6720:
                      #0  0x00007f246e4dd4aa __futex_abstimed_wait_common (libc.so.6 + 0x9e4aa)
                      #1  0x00007f246e4dfcb0 pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0xa0cb0)
                      #2  0x00005637a65bc5d6 qemu_cond_wait_impl (qemu-kvm + 0x9ea5d6)
                      #3  0x00005637a60ffb9b qemu_wait_io_event (qemu-kvm + 0x52db9b)
                      #4  0x00005637a634f161 kvm_vcpu_thread_fn (qemu-kvm + 0x77d161)
                      #5  0x00005637a65bcfea qemu_thread_start.llvm.17279737596791441160 (qemu-kvm + 0x9eafea)
                      #6  0x00007f246e4e0912 start_thread (libc.so.6 + 0xa1912)
                      #7  0x00007f246e47e314 __clone (libc.so.6 + 0x3f314)
                      
                      Stack trace of thread 6721:
                      #0  0x00007f246e4dd4aa __futex_abstimed_wait_common (libc.so.6 + 0x9e4aa)
                      #1  0x00007f246e4dfcb0 pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0xa0cb0)
                      #2  0x00005637a65bc5d6 qemu_cond_wait_impl (qemu-kvm + 0x9ea5d6)
                      #3  0x00005637a60ffb9b qemu_wait_io_event (qemu-kvm + 0x52db9b)
                      #4  0x00005637a634f161 kvm_vcpu_thread_fn (qemu-kvm + 0x77d161)
                      #5  0x00005637a65bcfea qemu_thread_start.llvm.17279737596791441160 (qemu-kvm + 0x9eafea)
                      #6  0x00007f246e4e0912 start_thread (libc.so.6 + 0xa1912)
                      #7  0x00007f246e47e314 __clone (libc.so.6 + 0x3f314)
                      
                      Stack trace of thread 6722:
                      #0  0x00007f246e4dd4aa __futex_abstimed_wait_common (libc.so.6 + 0x9e4aa)
                      #1  0x00007f246e4dfcb0 pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0xa0cb0)
                      #2  0x00005637a65bc5d6 qemu_cond_wait_impl (qemu-kvm + 0x9ea5d6)
                      #3  0x00005637a60ffb9b qemu_wait_io_event (qemu-kvm + 0x52db9b)
                      #4  0x00005637a634f161 kvm_vcpu_thread_fn (qemu-kvm + 0x77d161)
                      #5  0x00005637a65bcfea qemu_thread_start.llvm.17279737596791441160 (qemu-kvm + 0x9eafea)
                      #6  0x00007f246e4e0912 start_thread (libc.so.6 + 0xa1912)
                      #7  0x00007f246e47e314 __clone (libc.so.6 + 0x3f314)
                      
                      Stack trace of thread 6723:
                      #0  0x00007f246e4dd4aa __futex_abstimed_wait_common (libc.so.6 + 0x9e4aa)
                      #1  0x00007f246e4dfcb0 pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0xa0cb0)
                      #2  0x00005637a65bc5d6 qemu_cond_wait_impl (qemu-kvm + 0x9ea5d6)
                      #3  0x00005637a60ffb9b qemu_wait_io_event (qemu-kvm + 0x52db9b)
                      #4  0x00005637a634f161 kvm_vcpu_thread_fn (qemu-kvm + 0x77d161)
                      #5  0x00005637a65bcfea qemu_thread_start.llvm.17279737596791441160 (qemu-kvm + 0x9eafea)
                      #6  0x00007f246e4e0912 start_thread (libc.so.6 + 0xa1912)
                      #7  0x00007f246e47e314 __clone (libc.so.6 + 0x3f314)
                      
                      Stack trace of thread 6724:
                      #0  0x00007f246e4dd4aa __futex_abstimed_wait_common (libc.so.6 + 0x9e4aa)
                      #1  0x00007f246e4dfcb0 pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0xa0cb0)
                      #2  0x00005637a65bc5d6 qemu_cond_wait_impl (qemu-kvm + 0x9ea5d6)
                      #3  0x00005637a60ffb9b qemu_wait_io_event (qemu-kvm + 0x52db9b)
                      #4  0x00005637a634f161 kvm_vcpu_thread_fn (qemu-kvm + 0x77d161)
                      #5  0x00005637a65bcfea qemu_thread_start.llvm.17279737596791441160 (qemu-kvm + 0x9eafea)
                      #6  0x00007f246e4e0912 start_thread (libc.so.6 + 0xa1912)
                      #7  0x00007f246e47e314 __clone (libc.so.6 + 0x3f314)
                      
                      Stack trace of thread 6725:
                      #0  0x00007f246e4dd4aa __futex_abstimed_wait_common (libc.so.6 + 0x9e4aa)
                      #1  0x00007f246e4dfcb0 pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0xa0cb0)
                      #2  0x00005637a65bc5d6 qemu_cond_wait_impl (qemu-kvm + 0x9ea5d6)
                      #3  0x00005637a60ffb9b qemu_wait_io_event (qemu-kvm + 0x52db9b)
                      #4  0x00005637a634f161 kvm_vcpu_thread_fn (qemu-kvm + 0x77d161)
                      #5  0x00005637a65bcfea qemu_thread_start.llvm.17279737596791441160 (qemu-kvm + 0x9eafea)
                      #6  0x00007f246e4e0912 start_thread (libc.so.6 + 0xa1912)
                      #7  0x00007f246e47e314 __clone (libc.so.6 + 0x3f314)
                      
                      Stack trace of thread 6701:
                      #0  0x00007f246e5819be ppoll (libc.so.6 + 0x1429be)
                      #1  0x00005637a65d64f6 main_loop_wait (qemu-kvm + 0xa044f6)
                      #2  0x00005637a610e637 qemu_main_loop (qemu-kvm + 0x53c637)
                      #3  0x00005637a5f59cba qemu_default_main (qemu-kvm + 0x387cba)
                      #4  0x00007f246e47eeb0 __libc_start_call_main (libc.so.6 + 0x3feb0)
                      #5  0x00007f246e47ef60 __libc_start_main@@GLIBC_2.34 (libc.so.6 + 0x3ff60)
                      #6  0x00005637a5f593d5 _start (qemu-kvm + 0x3873d5)
                      
                      Stack trace of thread 6706:
                      #0  0x00007f246e47de5d syscall (libc.so.6 + 0x3ee5d)
                      #1  0x00005637a65bcd4f qemu_event_wait (qemu-kvm + 0x9ead4f)
                      #2  0x00005637a65cae49 call_rcu_thread (qemu-kvm + 0x9f8e49)
                      #3  0x00005637a65bcfea qemu_thread_start.llvm.17279737596791441160 (qemu-kvm + 0x9eafea)
                      #4  0x00007f246e4e0912 start_thread (libc.so.6 + 0xa1912)
                      #5  0x00007f246e47e450 __clone3 (libc.so.6 + 0x3f450)
                      
                      Stack trace of thread 6719:
                      #0  0x00007f246e5818bf __poll (libc.so.6 + 0x1428bf)
                      #1  0x00007f246e8751fc g_main_context_iterate.constprop.0 (libglib-2.0.so.0 + 0xaa1fc)
                      #2  0x00007f246e81f5a3 g_main_loop_run (libglib-2.0.so.0 + 0x545a3)
                      #3  0x00005637a63a9dbf iothread_run (qemu-kvm + 0x7d7dbf)
                      #4  0x00005637a65bcfea qemu_thread_start.llvm.17279737596791441160 (qemu-kvm + 0x9eafea)
                      #5  0x00007f246e4e0912 start_thread (libc.so.6 + 0xa1912)
                      #6  0x00007f246e47e314 __clone (libc.so.6 + 0x3f314)
                      
                      Stack trace of thread 6726:
                      #0  0x00007f246e4dd4aa __futex_abstimed_wait_common (libc.so.6 + 0x9e4aa)
                      #1  0x00007f246e4dfcb0 pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0xa0cb0)
                      #2  0x00005637a65bc5d6 qemu_cond_wait_impl (qemu-kvm + 0x9ea5d6)
                      #3  0x00005637a5f96416 vnc_worker_thread.llvm.11853996392063472260 (qemu-kvm + 0x3c4416)
                      #4  0x00005637a65bcfea qemu_thread_start.llvm.17279737596791441160 (qemu-kvm + 0x9eafea)
                      #5  0x00007f246e4e0912 start_thread (libc.so.6 + 0xa1912)
                      #6  0x00007f246e47e314 __clone (libc.so.6 + 0x3f314)
                      ELF object binary architecture: AMD x86-64
      
      

      The VM's qemu-kvm coredump info on the target host:

      # coredumpctl info 
                 PID: 8056 (qemu-kvm)
                 UID: 0 (root)
                 GID: 107 (qemu)
              Signal: 6 (ABRT)
           Timestamp: Tue 2023-11-28 04:07:17 EST (11min ago)
        Command Line: /usr/libexec/qemu-kvm -name guest=rhel9.4,debug-threads=on -S -object $'{"qom-type":"secret","id":"masterKey0","format>    Executable: /usr/libexec/qemu-kvm
       Control Group: /machine.slice/machine-qemu\x2d3\x2drhel9.4.scope/libvirt/emulator
                Unit: machine-qemu\x2d3\x2drhel9.4.scope
               Slice: machine.slice
             Boot ID: 7428ee06060749d0ae5fa1dae8e735bf
          Machine ID: 503064eaf1da4850a8d6d6b5e700f55e
            Hostname: dell-per740-02.lab.eng.pek2.redhat.com
             Storage: /var/lib/systemd/coredump/core.qemu-kvm.0.7428ee06060749d0ae5fa1dae8e735bf.8056.1701162437000000.zst (present)
        Size on Disk: 3.3M
             Message: Process 8056 (qemu-kvm) of user 0 dumped core.
                      
                      Stack trace of thread 8056:
                      #0  0x00007fa522b7f65c __pthread_kill_implementation (libc.so.6 + 0xa365c)
                      #1  0x00007fa522b30d06 raise (libc.so.6 + 0x54d06)
                      #2  0x00007fa522b047f3 abort (libc.so.6 + 0x287f3)
                      #3  0x00007fa522b0471b __assert_fail_base.cold (libc.so.6 + 0x2871b)
                      #4  0x00007fa522b29ca6 __assert_fail (libc.so.6 + 0x4dca6)
                      #5  0x00005612ae9b9ddf qcow2_get_specific_info (qemu-kvm + 0x861ddf)
                      #6  0x00005612ae998b79 bdrv_do_query_node_info (qemu-kvm + 0x840b79)
                      #7  0x00005612ae998249 bdrv_query_image_info (qemu-kvm + 0x840249)
                      #8  0x00005612ae997f9b bdrv_block_device_info (qemu-kvm + 0x83ff9b)
                      #9  0x00005612ae999201 qmp_query_block (qemu-kvm + 0x841201)
                      #10 0x00005612aea4e39e qmp_marshal_query_block (qemu-kvm + 0x8f639e)
                      #11 0x00005612aeb31ebf do_qmp_dispatch_bh (qemu-kvm + 0x9d9ebf)
                      #12 0x00005612aeb5a1c1 aio_bh_poll (qemu-kvm + 0xa021c1)
                      #13 0x00005612aeb3ea1e aio_poll (qemu-kvm + 0x9e6a1e)
                      #14 0x00005612ae93194d bdrv_poll_co.llvm.15611130193470015796 (qemu-kvm + 0x7d994d)
                      #15 0x00005612ae932f56 bdrv_invalidate_cache (qemu-kvm + 0x7daf56)
                      #16 0x00005612ae946c2c bdrv_activate (qemu-kvm + 0x7eec2c)
                      #17 0x00005612ae946ed8 bdrv_activate_all (qemu-kvm + 0x7eeed8)
                      #18 0x00005612ae6dad93 loadvm_postcopy_handle_run_bh (qemu-kvm + 0x582d93)
                      #19 0x00005612aeb5a1c1 aio_bh_poll (qemu-kvm + 0xa021c1)
                      #20 0x00005612aeb3ddd4 aio_dispatch (qemu-kvm + 0x9e5dd4)
                      #21 0x00005612aeb5b60f aio_ctx_dispatch (qemu-kvm + 0xa0360f)
                      #22 0x00007fa522ebcf4f g_main_context_dispatch (libglib-2.0.so.0 + 0x54f4f)
                      #23 0x00005612aeb5c56e main_loop_wait (qemu-kvm + 0xa0456e)
                      #24 0x00005612ae694637 qemu_main_loop (qemu-kvm + 0x53c637)
                      #25 0x00005612ae4dfcba qemu_default_main (qemu-kvm + 0x387cba)
                      #26 0x00007fa522b1beb0 __libc_start_call_main (libc.so.6 + 0x3feb0)
                      #27 0x00007fa522b1bf60 __libc_start_main@@GLIBC_2.34 (libc.so.6 + 0x3ff60)
                      #28 0x00005612ae4df3d5 _start (qemu-kvm + 0x3873d5)
                      
                      Stack trace of thread 8075:
                      #0  0x00007fa522b7a4aa __futex_abstimed_wait_common (libc.so.6 + 0x9e4aa)
                      #1  0x00007fa522b7ccb0 pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0xa0cb0)
                      #2  0x00005612aeb425d6 qemu_cond_wait_impl (qemu-kvm + 0x9ea5d6)
                      #3  0x00005612ae685b9b qemu_wait_io_event (qemu-kvm + 0x52db9b)
                      #4  0x00005612ae8d5161 kvm_vcpu_thread_fn (qemu-kvm + 0x77d161)
                      #5  0x00005612aeb42fea qemu_thread_start.llvm.17279737596791441160 (qemu-kvm + 0x9eafea)
                      #6  0x00007fa522b7d912 start_thread (libc.so.6 + 0xa1912)
                      #7  0x00007fa522b1b314 __clone (libc.so.6 + 0x3f314)
                      
                      Stack trace of thread 8076:
                      #0  0x00007fa522b7a4aa __futex_abstimed_wait_common (libc.so.6 + 0x9e4aa)
                      #1  0x00007fa522b7ccb0 pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0xa0cb0)
                      #2  0x00005612aeb425d6 qemu_cond_wait_impl (qemu-kvm + 0x9ea5d6)
                      #3  0x00005612ae685b9b qemu_wait_io_event (qemu-kvm + 0x52db9b)
                      #4  0x00005612ae8d5161 kvm_vcpu_thread_fn (qemu-kvm + 0x77d161)
                      #5  0x00005612aeb42fea qemu_thread_start.llvm.17279737596791441160 (qemu-kvm + 0x9eafea)
                      #6  0x00007fa522b7d912 start_thread (libc.so.6 + 0xa1912)
                      #7  0x00007fa522b1b314 __clone (libc.so.6 + 0x3f314)
                      
                      Stack trace of thread 8077:
                      #0  0x00007fa522b7a4aa __futex_abstimed_wait_common (libc.so.6 + 0x9e4aa)
                      #1  0x00007fa522b7ccb0 pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0xa0cb0)
                      #2  0x00005612aeb425d6 qemu_cond_wait_impl (qemu-kvm + 0x9ea5d6)
                      #3  0x00005612ae685b9b qemu_wait_io_event (qemu-kvm + 0x52db9b)
                      #4  0x00005612ae8d5161 kvm_vcpu_thread_fn (qemu-kvm + 0x77d161)
                      #5  0x00005612aeb42fea qemu_thread_start.llvm.17279737596791441160 (qemu-kvm + 0x9eafea)
                      #6  0x00007fa522b7d912 start_thread (libc.so.6 + 0xa1912)
                      #7  0x00007fa522b1b314 __clone (libc.so.6 + 0x3f314)
                      
                      Stack trace of thread 8078:
                      #0  0x00007fa522b7a4aa __futex_abstimed_wait_common (libc.so.6 + 0x9e4aa)
                      #1  0x00007fa522b7ccb0 pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0xa0cb0)
                      #2  0x00005612aeb425d6 qemu_cond_wait_impl (qemu-kvm + 0x9ea5d6)
                      #3  0x00005612ae685b9b qemu_wait_io_event (qemu-kvm + 0x52db9b)
                      #4  0x00005612ae8d5161 kvm_vcpu_thread_fn (qemu-kvm + 0x77d161)
                      #5  0x00005612aeb42fea qemu_thread_start.llvm.17279737596791441160 (qemu-kvm + 0x9eafea)
                      #6  0x00007fa522b7d912 start_thread (libc.so.6 + 0xa1912)
                      #7  0x00007fa522b1b314 __clone (libc.so.6 + 0x3f314)
                      
                      Stack trace of thread 8079:
                      #0  0x00007fa522b7a4aa __futex_abstimed_wait_common (libc.so.6 + 0x9e4aa)
                      #1  0x00007fa522b7ccb0 pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0xa0cb0)
                      #2  0x00005612aeb425d6 qemu_cond_wait_impl (qemu-kvm + 0x9ea5d6)
                      #3  0x00005612ae685b9b qemu_wait_io_event (qemu-kvm + 0x52db9b)
                      #4  0x00005612ae8d5161 kvm_vcpu_thread_fn (qemu-kvm + 0x77d161)
                      #5  0x00005612aeb42fea qemu_thread_start.llvm.17279737596791441160 (qemu-kvm + 0x9eafea)
                      #6  0x00007fa522b7d912 start_thread (libc.so.6 + 0xa1912)
                      #7  0x00007fa522b1b314 __clone (libc.so.6 + 0x3f314)
                      
                      Stack trace of thread 8080:
                      #0  0x00007fa522b7a4aa __futex_abstimed_wait_common (libc.so.6 + 0x9e4aa)
                      #1  0x00007fa522b7ccb0 pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0xa0cb0)
                      #2  0x00005612aeb425d6 qemu_cond_wait_impl (qemu-kvm + 0x9ea5d6)
                      #3  0x00005612ae685b9b qemu_wait_io_event (qemu-kvm + 0x52db9b)
                      #4  0x00005612ae8d5161 kvm_vcpu_thread_fn (qemu-kvm + 0x77d161)
                      #5  0x00005612aeb42fea qemu_thread_start.llvm.17279737596791441160 (qemu-kvm + 0x9eafea)
                      #6  0x00007fa522b7d912 start_thread (libc.so.6 + 0xa1912)
                      #7  0x00007fa522b1b314 __clone (libc.so.6 + 0x3f314)
                      
                      Stack trace of thread 8086:
                      #0  0x00007fa522ba92ba __memset_evex_unaligned_erms (libc.so.6 + 0xcd2ba)
                      #1  0x00005612ae885aff ram_load_postcopy (qemu-kvm + 0x72daff)
                      #2  0x00005612ae889204 ram_load (qemu-kvm + 0x731204)
                      #3  0x00005612ae6d6aac qemu_loadvm_state_main (qemu-kvm + 0x57eaac)
                      #4  0x00005612ae6daa0b postcopy_ram_listen_thread (qemu-kvm + 0x582a0b)
                      #5  0x00005612aeb42fea qemu_thread_start.llvm.17279737596791441160 (qemu-kvm + 0x9eafea)
                      #6  0x00007fa522b7d912 start_thread (libc.so.6 + 0xa1912)
                      #7  0x00007fa522b1b314 __clone (libc.so.6 + 0x3f314)
                      
                      Stack trace of thread 8084:
                      #0  0x00007fa522c1e8bf __poll (libc.so.6 + 0x1428bf)
                      #1  0x00005612ae6d0660 postcopy_ram_fault_thread (qemu-kvm + 0x578660)
                      #2  0x00005612aeb42fea qemu_thread_start.llvm.17279737596791441160 (qemu-kvm + 0x9eafea)
                      #3  0x00007fa522b7d912 start_thread (libc.so.6 + 0xa1912)
                      #4  0x00007fa522b1b314 __clone (libc.so.6 + 0x3f314)
                      
                      Stack trace of thread 8089:
                      #0  0x00007fa522b7a4aa __futex_abstimed_wait_common (libc.so.6 + 0x9e4aa)
                      #1  0x00007fa522b7cfb4 pthread_cond_timedwait@@GLIBC_2.3.2 (libc.so.6 + 0xa0fb4)
                      #2  0x00005612aeb42768 qemu_cond_timedwait_ts.llvm.17279737596791441160 (qemu-kvm + 0x9ea768)
                      #3  0x00005612aeb4270b qemu_cond_timedwait_impl (qemu-kvm + 0x9ea70b)
                      #4  0x00005612aeb5f695 worker_thread (qemu-kvm + 0xa07695)
                      #5  0x00005612aeb42fea qemu_thread_start.llvm.17279737596791441160 (qemu-kvm + 0x9eafea)
                      #6  0x00007fa522b7d912 start_thread (libc.so.6 + 0xa1912)
                      #7  0x00007fa522b1b314 __clone (libc.so.6 + 0x3f314)
                      
                      Stack trace of thread 8061:
                      #0  0x00007fa522b1ae5d syscall (libc.so.6 + 0x3ee5d)
                      #1  0x00005612aeb42d4f qemu_event_wait (qemu-kvm + 0x9ead4f)
                      #2  0x00005612aeb50426 synchronize_rcu (qemu-kvm + 0x9f8426)
                      #3  0x00005612aeb50e65 call_rcu_thread (qemu-kvm + 0x9f8e65)
                      #4  0x00005612aeb42fea qemu_thread_start.llvm.17279737596791441160 (qemu-kvm + 0x9eafea)
                      #5  0x00007fa522b7d912 start_thread (libc.so.6 + 0xa1912)
                      #6  0x00007fa522b1b450 __clone3 (libc.so.6 + 0x3f450)
                      
                      Stack trace of thread 8074:
                      #0  0x00007fa522c1e8bf __poll (libc.so.6 + 0x1428bf)
                      #1  0x00007fa522f121fc g_main_context_iterate.constprop.0 (libglib-2.0.so.0 + 0xaa1fc)
                      #2  0x00007fa522ebc5a3 g_main_loop_run (libglib-2.0.so.0 + 0x545a3)
                      #3  0x00005612ae92fdbf iothread_run (qemu-kvm + 0x7d7dbf)
                      #4  0x00005612aeb42fea qemu_thread_start.llvm.17279737596791441160 (qemu-kvm + 0x9eafea)
                      #5  0x00007fa522b7d912 start_thread (libc.so.6 + 0xa1912)
                      #6  0x00007fa522b1b314 __clone (libc.so.6 + 0x3f314)
                      
                      Stack trace of thread 8081:
                      #0  0x00007fa522b7a4aa __futex_abstimed_wait_common (libc.so.6 + 0x9e4aa)
                      #1  0x00007fa522b7ccb0 pthread_cond_wait@@GLIBC_2.3.2 (libc.so.6 + 0xa0cb0)
                      #2  0x00005612aeb425d6 qemu_cond_wait_impl (qemu-kvm + 0x9ea5d6)
                      #3  0x00005612ae51c416 vnc_worker_thread.llvm.11853996392063472260 (qemu-kvm + 0x3c4416)
                      #4  0x00005612aeb42fea qemu_thread_start.llvm.17279737596791441160 (qemu-kvm + 0x9eafea)
                      #5  0x00007fa522b7d912 start_thread (libc.so.6 + 0xa1912)
                      #6  0x00007fa522b1b314 __clone (libc.so.6 + 0x3f314)
                      ELF object binary architecture: AMD x86-64
      

      (2) The VM xml can be as following:
      [1] http://10.73.72.41/log/bug/JIRA-17369/iommu/VM.xml
      [2] http://10.73.72.41/log/bug/JIRA-17369/non-iommu/VM.xml

              shajnocz@redhat.com Stefan Hajnoczi
              yanghliu@redhat.com YangHang Liu
              virt-maint virt-maint
              YangHang Liu YangHang Liu
              Votes:
              0 Vote for this issue
              Watchers:
              18 Start watching this issue

                Created:
                Updated:
                Resolved: