diff options
Diffstat (limited to 'results/classifier/118/permissions/634')
| -rw-r--r-- | results/classifier/118/permissions/634 | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/results/classifier/118/permissions/634 b/results/classifier/118/permissions/634 new file mode 100644 index 000000000..6b5207d9d --- /dev/null +++ b/results/classifier/118/permissions/634 @@ -0,0 +1,111 @@ +permissions: 0.857 +virtual: 0.845 +KVM: 0.833 +peripherals: 0.818 +performance: 0.811 +register: 0.811 +device: 0.811 +hypervisor: 0.805 +VMM: 0.805 +TCG: 0.798 +risc-v: 0.797 +debug: 0.789 +user-level: 0.784 +socket: 0.780 +graphic: 0.772 +architecture: 0.759 +ppc: 0.756 +semantic: 0.755 +mistranslation: 0.752 +assembly: 0.731 +arm: 0.727 +vnc: 0.725 +network: 0.720 +PID: 0.679 +x86: 0.665 +boot: 0.663 +kernel: 0.652 +files: 0.593 +i386: 0.483 + +usbredir: assertion failure after suspend/resume when stopped +Description of problem: +Accessing a USB smart card ([Yubikey 5 NFC](https://www.yubico.com/product/yubikey-5-nfc/)) from the guest after host suspend/resume while the guest is stopped and the device is redirected causes QEMU to crash with "Segmentation fault" (with master) or the assertion failure (with Debian 1:6.1+dfsg-5): + + qemu-system-x86_64: ../../hw/usb/core.c:470: usb_packet_complete_one: Assertion `p->stream || QTAILQ_FIRST(&ep->queue) == p' failed. +Steps to reproduce: +1. Run `qemu-system-x86_64` with command line listed above. +2. Run `remote-viewer spice://localhost:3001` in another terminal. +3. Redirect the smart card to the guest in remote-viewer. +4. Run `gpg --card-status` in the guest. +5. Run `stop` in the QEMU monitor. +6. Run `rtcwake --mode mem --seconds 1` as root to suspend the host to S3, then resume. (or `ehco mem >/sys/power/state` or `systemctl suspend` then wake manually) +7. Run `cont` in QEMU monitor to resume the guest. +8. Stop redirecting the smart card to the guest in remote-viewer. +9. Start redirecting the smart card to the guest in remote-viewer. +10. Run `gpg --card-status` in the guest. Repeat if necessary. + +Note that after step 7 the train has left the rails. Executing `gpg --card-status` in the guest at this point would print: + + gpg: selecting card failed: no such device + gpg: OpenPGP card not available: no such device + +However, stopping and resuming redirection appears to be necessary to trigger the assertion failure. + +Also note that on Windows, it's not necessary to execute any `gpg` commands. QEMU will hit the assertion failure after step 9. +Additional information: +<details> +<summary>backtrace with version built from 2c3e83f92d</summary> + + Program terminated with signal SIGSEGV, Segmentation fault. + #0 0x00005623c09a5754 in usb_handle_packet + (dev=0x5623c3592500, p=p@entry=0x7f92e43c81c8) at ../hw/usb/core.c:441 + #1 0x00005623c09be239 in xhci_submit + (epctx=<optimized out>, xfer=<optimized out>, xhci=<optimized out>) + at ../hw/usb/hcd-xhci.c:1783 + #2 xhci_fire_transfer + (epctx=<optimized out>, xfer=<optimized out>, xhci=<optimized out>) + at ../hw/usb/hcd-xhci.c:1792 + #3 xhci_kick_epctx (epctx=0x7f92e43c7c30, streamid=0) + at ../hw/usb/hcd-xhci.c:1951 + #4 0x00005623c09bea1b in xhci_kick_ep + (xhci=<optimized out>, slotid=<optimized out>, epid=<optimized out>, streamid=<optimized out>) at ../hw/usb/hcd-xhci.c:1817 + #5 0x00005623c09bebd8 in xhci_doorbell_write + (ptr=0x7f92ec137970, reg=1, val=4, size=<optimized out>) + at ../hw/usb/hcd-xhci.c:3118 + #6 0x00005623c0abbc7f in memory_region_write_accessor + (mr=mr@entry=0x7f92ec137ed0, addr=4, value=value@entry=0x7f92eda403e8, size=size@entry=4, shift=<optimized out>, mask=mask@entry=4294967295, attrs=...) + at ../softmmu/memory.c:492 + #7 0x00005623c0ab953e in access_with_adjusted_size + (addr=addr@entry=4, value=value@entry=0x7f92eda403e8, size=size@entry=4, access_size_min=<optimized out>, access_size_max=<optimized out>, access_fn= + 0x5623c0abbc00 <memory_region_write_accessor>, mr=0x7f92ec137ed0, attrs=...) at ../softmmu/memory.c:554 + #8 0x00005623c0abd650 in memory_region_dispatch_write + (mr=mr@entry=0x7f92ec137ed0, addr=4, data=<optimized out>, op=<optimized out>, attrs=attrs@entry=...) at ../softmmu/memory.c:1511 + #9 0x00005623c0aad417 in flatview_write_continue + (fv=fv@entry=0x7f92e43c7140, addr=addr@entry=4227932164, attrs=attrs@entry=..., ptr=ptr@entry=0x7f92ef17f028, len=len@entry=4, addr1=<optimized out>, l=<optimized out>, mr=0x7f92ec137ed0) + at /home/kevin/tmp/qemu/include/qemu/host-utils.h:165 + #10 0x00005623c0ab09db in flatview_write + (len=4, buf=0x7f92ef17f028, attrs=..., addr=4227932164, fv=0x7f92e43c7140) + at ../softmmu/physmem.c:2820 + #11 address_space_write + (as=<optimized out>, addr=4227932164, attrs=..., buf=buf@entry=0x7f92ef17f028, len=4) at ../softmmu/physmem.c:2912 + #12 0x00005623c0ab0a9f in address_space_rw + (as=<optimized out>, addr=<optimized out>, attrs=..., + attrs@entry=..., buf=buf@entry=0x7f92ef17f028, len=<optimized out>, is_write=<optimized out>) at ../softmmu/physmem.c:2922 + #13 0x00005623c0ba2890 in kvm_cpu_exec (cpu=cpu@entry=0x5623c2729bc0) + at ../accel/kvm/kvm-all.c:2893 + #14 0x00005623c0ba3bbd in kvm_vcpu_thread_fn (arg=arg@entry=0x5623c2729bc0) + at ../accel/kvm/kvm-accel-ops.c:49 + #15 0x00005623c0d0a959 in qemu_thread_start (args=0x7f92eda40610) + at ../util/qemu-thread-posix.c:557 + #16 0x00007f92fd431eae in start_thread (arg=0x7f92eda45640) + at pthread_create.c:463 + #17 0x00007f92fca2fa5f in clone () + at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 + +</details> + +Let me know if there are any additional logs or information that would be useful. + +Thanks,\ +Kevin |