| Summary: | [REGRESSION] NULL pointer dereference when waking up monitor | ||||||
|---|---|---|---|---|---|---|---|
| Product: | DRI | Reporter: | mr.nuke.me | ||||
| Component: | DRM/AMDgpu | Assignee: | Default DRI bug account <dri-devel> | ||||
| Status: | RESOLVED MOVED | QA Contact: | |||||
| Severity: | normal | ||||||
| Priority: | medium | CC: | harry.wentland, nicholas.kazlauskas, sunpeng.li | ||||
| Version: | XOrg git | ||||||
| Hardware: | Other | ||||||
| OS: | All | ||||||
| Whiteboard: | |||||||
| i915 platform: | i915 features: | ||||||
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Does the patch attached to bug 107153 help? I was not able to observe any improvement with the patch in bug 107153 I should have mentioned that the monitor is connected via DP. -- GitLab Migration Automatic Message -- This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity. You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/457. |
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Created attachment 140719 [details] dmesg I'm noticing this with linux-17.6 on an RX 480, but did not experience this problem with linux-4.16 and earlier. I let the machine without any input for a while, and it automatically puts the monitor to sleep. To wake up the screen, I move the mouse or hit the keyboard. About a third of the time, the login screen comes up, and there's no response. SSH then dmesg points to an amazingly well crafted NULL pointer dereference in [amdgpu]. Surprisingly, this isn't some 4billionk triple-gazillion monitor setup, which I've always had driver issues with. This issue happens with a single display. For fast access, this is the backtrace: [59233.951991] Call Trace: [59233.952068] dm_update_crtcs_state+0x26c/0x4d0 [amdgpu] [59233.952140] amdgpu_dm_atomic_check+0x1b1/0x3b0 [amdgpu] [59233.952172] drm_atomic_check_only+0x360/0x4f0 [drm] [59233.952192] drm_atomic_commit+0x13/0x50 [drm] [59233.952211] drm_atomic_connector_commit_dpms+0xdb/0x100 [drm] [59233.952230] drm_mode_obj_set_property_ioctl+0x178/0x280 [drm] [59233.952249] ? drm_mode_connector_set_obj_prop+0x80/0x80 [drm] [59233.952266] drm_mode_connector_property_set_ioctl+0x39/0x60 [drm] [59233.952283] drm_ioctl_kernel+0x5b/0xb0 [drm] [59233.952300] drm_ioctl+0x1b3/0x370 [drm] [59233.952318] ? drm_mode_connector_set_obj_prop+0x80/0x80 [drm] [59233.952375] amdgpu_drm_ioctl+0x49/0x80 [amdgpu] [59233.952382] do_vfs_ioctl+0xa4/0x610 [59233.952386] ksys_ioctl+0x60/0x90 [59233.952389] __x64_sys_ioctl+0x16/0x20 [59233.952394] do_syscall_64+0x5b/0x160 [59233.952399] entry_SYSCALL_64_after_hwframe+0x44/0xa9