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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-07-03 19:39:53 +0200 |
|---|---|---|
| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-07-03 19:39:53 +0200 |
| commit | dee4dcba78baf712cab403d47d9db319ab7f95d6 (patch) | |
| tree | 418478faf06786701a56268672f73d6b0b4eb239 /results/classifier/108/debug/1180924 | |
| parent | 4d9e26c0333abd39bdbd039dcdb30ed429c475ba (diff) | |
| download | emulator-bug-study-dee4dcba78baf712cab403d47d9db319ab7f95d6.tar.gz emulator-bug-study-dee4dcba78baf712cab403d47d9db319ab7f95d6.zip | |
restructure results
Diffstat (limited to 'results/classifier/108/debug/1180924')
| -rw-r--r-- | results/classifier/108/debug/1180924 | 67 |
1 files changed, 0 insertions, 67 deletions
diff --git a/results/classifier/108/debug/1180924 b/results/classifier/108/debug/1180924 deleted file mode 100644 index cc15906e..00000000 --- a/results/classifier/108/debug/1180924 +++ /dev/null @@ -1,67 +0,0 @@ -debug: 0.936 -permissions: 0.922 -semantic: 0.912 -other: 0.903 -performance: 0.892 -graphic: 0.882 -device: 0.867 -PID: 0.866 -KVM: 0.858 -vnc: 0.851 -files: 0.833 -boot: 0.833 -socket: 0.756 -network: 0.747 - -fails to handle a usb serial port with a specific vendorid - -If I run qemu-system-i386 with arguments --usb -usbdevice serial:vendorid=1221:pty -(this is what the documentation says about how I shoud add a usb device which has a serial port interface and which has a specific vendor id, I used the documentation located here: -http://qemu.weilnetz.de/qemu-doc.html -), it says -char device redirected to /dev/pts/<something> (label usbserial0) -qemu-system-i386: -usbdevice serial:vendorid=1221:pty: Property '.vendorid' not found -Aborted -and exits. Moreover, if I try to add such a device to a running machine by typing usb_add serial:vendorid=1221:pty in the machine's control terminal (to reach it, I press ctrl-alt-2), qemu also writes -char device redirected to /dev/pts/<something> (label usbserial0) -Aborted -to the terminal where I run it from and exits. To the quest OS this looks like a power failure which causes all the programs inside the virtual machine to lose their unsaved data. -I have tested this with qemu-1.5.0-rc2, actually, the issue occured in a similar way since 1.0.1, but did not occur in 0.11.1. -The issue is reproducible always, even if I don't specify any hard disk in the command line, i. e. -$ qemu-system-i386 -usb -usbdevice serial:vendorid=1221:pty -, so I believe it is guest OS -independent. - - Hi, - ->> (this is what the documentation says about how I shoud add a usb device which has a serial port interface and which has a specific vendor id, I used the documentation located here: ->> http://qemu.weilnetz.de/qemu-doc.html ->> ), it says ->> char device redirected to /dev/pts/<something> (label usbserial0) ->> qemu-system-i386: -usbdevice serial:vendorid=1221:pty: Property '.vendorid' not found ->> Aborted -> [...] -> -> Regression; this definitely worked when I wrote docs/qdev-device-use.txt. - -> Not a release blocker, since it regressed a long time ago (v0.12). - -Guess the docs should be updated, unless someone can come up with a -reasonable use case for the vendorid + deviceid properties. - -cheers, - Gerd - - -I think the ability to specify a different vendorid + deviceid can be useful. Suppose there is a USB device such that the specifications are open and officially published, but the driver is proprietary. (As far as I know, this is similar to the situation with ATI video cards, but they are not USB devices.) And I suspect that the driver is buggy (i. e. it does not send the data according to the specifications). I want to figure out where exactly it works incorrectly to submit a bug report to the developer of the driver. Or suppose I have a physical device, but it works a bit incorrectly. I want to figure out where exactly the problem is, in the driver or in the device. Since I am not sure that the device is OK, I don't want to write my own driver and interact with the device, maybe I will damage it even more. In both cases, I can emulate the device according to the specifications, install the driver in a guest system, and then see whether the driver sends correct data or where and when exactly the data are incorrect. - -Anyway, I think it is more or less ok if qemu crashes right after it starts due to bad command line parameters (nevertherless, the functionality lost this way could be useful as I explained). But I think IT IS NOT OK WHEN A WORKING VM WITH PROGRAMS INSIDE CRASHES after user enters a bad command in the machine's control terminal, unless the user explicitly requests termination (e. g. enters the q command). - -Regressed in commit f29783f72ea77dfbd7ea0c993d62d253d4c4e023. - -I've just run into this in a similar circumstance: trying to reverse-engineer a driver for a phone to which I can only connect via Bluetooth. No problem, I can just have it pretend to be a USB device. Except that I can't, because the driver won't recognise it. - -The crash has now been fixed here: -http://git.qemu.org/?p=qemu.git;a=commitdiff;h=aa612b364ecbe1dc -Please also note that the "-usbdevice serial" syntax is considered as deprecated nowadays - use "-device usb-serial" instead. - |