Bug 104831
| Summary: | Linux drm_legacy_lock_free+0x40/0x120 kernel NULL pointer dereference | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | niubl (448354223) |
| Component: | Video(Other) | Assignee: | drivers_video-other |
| Status: | RESOLVED OBSOLETE | ||
| Severity: | normal | CC: | byhankswang |
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | 4.2 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: | crash dmesg | ||
You need to describe the details of run time environment. Just run on Ubuntu 14.04? (In reply to byhankswang from comment #1) > You need to describe the details of run time environment. Just run on Ubuntu > 14.04? run as root on Ubuntu 14.04 . I test on Uubntu 14.04 X86_64. Please file a bug at https://bugs.freedesktop.org/ or dri-devel@lists.freedesktop.org for a likely better response. |
Created attachment 188031 [details] crash dmesg POC(run as root): #include <fcntl.h> #include <errno.h> #include <stdio.h> main() { int fd; int i = 20; fd = open("/dev/dri/card0", O_RDONLY); ioctl(fd, 0x4008642b, &i); fprintf(stderr, "the errno is %d\n", errno); }