| Summary: | Xorg crashes under Zaphod mode when adding/removing display (bisected) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Product: | xorg | Reporter: | James Le Cuirot <chewi> | ||||||
| Component: | Driver/Radeon | Assignee: | xf86-video-ati maintainers <xorg-driver-ati> | ||||||
| Status: | RESOLVED FIXED | QA Contact: | Xorg Project Team <xorg-team> | ||||||
| Severity: | normal | ||||||||
| Priority: | medium | CC: | airlied | ||||||
| Version: | git | ||||||||
| Hardware: | x86-64 (AMD64) | ||||||||
| OS: | Linux (All) | ||||||||
| Whiteboard: | |||||||||
| i915 platform: | i915 features: | ||||||||
| Attachments: |
|
||||||||
|
Description
James Le Cuirot
2015-12-16 21:58:30 UTC
Dave, any ideas offhand? (In reply to James Le Cuirot from comment #0) > [172723.305] (EE) 3: /usr/lib64/xorg/modules/drivers/radeon_drv.so > (0x7fdbbdd19000+0x4d510) [0x7fdbbdd66510] > http://cgit.freedesktop.org/xorg/driver/xf86-video-ati/tree/src/ > drmmode_display.c?id=78fbca095ae9887a2d3de48bb07975e2d1126e68#n1567 This line doesn't seem to match up with the rest of the backtrace. Please get a backtrace with gdb. Here you go.
#0 0x00007fdde79f7510 in snprintf (__fmt=<optimized out>, __n=<optimized out>, __s=<optimized out>) at /usr/include/bits/stdio2.h:64
#1 drmmode_create_name (koutput=0x24aaa30, koutput=0x24aaa30, num_hdmi=0x0, num_dvi=0x0, path_blob=0x0, name=0x7ffff5023790 "\240!F\002", pScrn=0x1f5bd80) at drmmode_display.c:1475
#2 drmmode_output_init (pScrn=pScrn@entry=0x1f5bd80, drmmode=drmmode@entry=0x1f5cd30, num=0, num_dvi=num_dvi@entry=0x0, num_hdmi=num_hdmi@entry=0x0, dynamic=1, mode_res=0x1f671b0)
at drmmode_display.c:1538
#3 0x00007fdde79fa2c9 in radeon_mode_hotplug (scrn=0x1f5bd80, drmmode=0x1f5cd30) at drmmode_display.c:2403
#4 0x00007fdde79fa387 in drmmode_handle_uevents (fd=<optimized out>, closure=0x1f5cd30) at drmmode_display.c:2426
#5 0x00000000004767fa in xf86Wakeup ()
#6 0x000000000043cc0b in WakeupHandler ()
#7 0x000000000058876d in WaitForSomething ()
#8 0x0000000000437dd1 in ?? ()
#9 0x000000000043c0bb in ?? ()
#10 0x00007fddec4dc620 in __libc_start_main () from /lib64/libc.so.6
#11 0x0000000000426639 in _start ()
Still a problem as of 7bc089ee9740a3ef91f16e36786d8ed64e165acd and Linux 4.5-rc5. I've had to hold back to xorg-server 1.17 because 7.50 won't build against 1.18. radeon_mode_hotplug() calls drmmode_output_init() with num_dvi=NULL, num_hdmi=NULL. drmmode_create_name() dereferences them. Created attachment 122886 [details] [review] Handle Zaphod mode correctly in radeon_mode_hotplug Does this patch fix the problem? (In reply to Michel Dänzer from comment #5) > Created attachment 122886 [details] [review] [review] > Handle Zaphod mode correctly in radeon_mode_hotplug > > Does this patch fix the problem? That does appear to have fixed it, thanks very much. commit c801f9f10a5d72d935faf21e72f7e7808fb4f05f Author: Michel Dänzer <michel.daenzer@amd.com> Date: Wed Apr 13 11:12:38 2016 +0900 Handle Zaphod mode correctly in radeon_mode_hotplug |
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.