[Bug 1913315] Re: qemu-system-x86_64 crash: in memory_region_access_valid+0x13

[Launchpad Bug Tracker]

[Expired for QEMU because there has been no activity for 60 days.]

** Changed in: qemu
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1913315

Title:
  qemu-system-x86_64 crash: in memory_region_access_valid+0x13

Status in QEMU:
  Expired

Bug description:
  Recently we started to get intermittent qemu crashes. There is
  catchsegv report:

  ```
  + qemu-system-x86_64 -m 77766M -smp 8 -nodefaults -nographic -no-reboot 
-fsdev local,id=root,path=/,security_model=none,multidevs=remap -device 
virtio-9p-pci,fsdev=root,mount_tag=/dev/root -device virtio-rng-pci -serial 
mon:stdio -kernel 
/usr/src/tmp/kernel-image-rt-buildroot/boot/vmlinuz-4.19.165-rt-alt1.rt70 
-initrd /usr/src/tmp/initramfs-4.19.165-rt-alt1.rt70.img -bios bios.bin -append 
'console=ttyS0 mitigations=off nokaslr quiet panic=-1 no_timer_check'
  *** signal 11
  Register dump:

   RAX: 0000000000000000   RBX: 0000034000000340   RCX: 0000000000000001
   RDX: 0000000000000004   RSI: 0000000000000300   RDI: 0000034000000340
   RBP: 0000000000000300   R8 : 0000000000000000   R9 : 0000034000000340
   R10: 0000000000000370   R11: 0000000000000002   R12: 0000000000000004
   R13: 0000000000000004   R14: 000055b473fef5e0   R15: 0000000000000002
   RSP: 00007fd7edffae90

   RIP: 000055b4717ef653   EFLAGS: 00010206

   CS: 0033   FS: 0000   GS: 0000

   Trap: 0000000e   Error: 00000004   OldMask: 7ffbfa77   CR2: 00000388

   FPUCW: 0000037f   FPUSW: 00000000   TAG: 00000000
   RIP: 00000000   RDP: 00000000

   ST(0) 0000 0000000000000000   ST(1) 0000 0000000000000000
   ST(2) 0000 0000000000000000   ST(3) 0000 0000000000000000
   ST(4) 0000 0000000000000000   ST(5) 0000 0000000000000000
   ST(6) 0000 0000000000000000   ST(7) 0000 0000000000000000
   mxcsr: 1fa0
   XMM0:  00000000000000000000000000000000 XMM1:  
00000000000000000000000000000000
   XMM2:  00000000000000000000000000000000 XMM3:  
00000000000000000000000000000000
   XMM4:  00000000000000000000000000000000 XMM5:  
00000000000000000000000000000000
   XMM6:  00000000000000000000000000000000 XMM7:  
00000000000000000000000000000000
   XMM8:  00000000000000000000000000000000 XMM9:  
00000000000000000000000000000000
   XMM10: 00000000000000000000000000000000 XMM11: 
00000000000000000000000000000000
   XMM12: 00000000000000000000000000000000 XMM13: 
00000000000000000000000000000000
   XMM14: 00000000000000000000000000000000 XMM15: 
00000000000000000000000000000000

  Backtrace:
  qemu-system-x86_64(memory_region_access_valid+0x13)[0x55b4717ef653]
  qemu-system-x86_64(memory_region_dispatch_write+0x48)[0x55b4717ef8c8]
  qemu-system-x86_64(+0x69fdfc)[0x55b471851dfc]
  qemu-system-x86_64(helper_le_stl_mmu+0x2c5)[0x55b471858995]
  [0x7feaed070925]

  ```
  QEMU release 5.2.0.

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