| Bug ID | 107300 |
|---|---|
| Summary | [REGRESSION] NULL pointer dereference when waking up monitor |
| Product | DRI |
| Version | XOrg git |
| Hardware | Other |
| OS | All |
| Status | NEW |
| Severity | normal |
| Priority | medium |
| Component | DRM/AMDgpu |
| Assignee | dri-devel@lists.freedesktop.org |
| Reporter | mr.nuke.me@gmail.com |
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
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