memory leak in `amdgpu_bo_create()`

Submitted by Paul Menzel

Assigned to Default DRI bug account

Link to original bug (#109389)

Description

Created attachment 143156
Output of kmemleak

With Linux 5.0-rc2+ the memory leaks below are reported by kmemleak.

unreferenced object 0xffff9f83850c5000 (size 2048):<br>
  comm "gnome-shell", pid 569, jiffies 4294682217 (age 9133.583s)<br>
  hex dump (first 32 bytes):<br>
    02 00 00 00 02 00 00 00 00 00 00 00 00 00 00 00  ................<br>
    02 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00  ................<br>
  backtrace:<br>
    [<000000001aec1dd8>] amdgpu_bo_create+0x40/0x220 [amdgpu]<br>
    [<000000007da39c30>] amdgpu_gem_object_create+0x9e/0x120 [amdgpu]<br>
    [<00000000099484e9>] amdgpu_gem_create_ioctl+0x1d3/0x290 [amdgpu]<br>
    [<000000009d8251d3>] drm_ioctl_kernel+0xa9/0xf0<br>
    [<0000000050b61811>] drm_ioctl+0x201/0x3a0<br>
    [<000000007c88aae3>] amdgpu_drm_ioctl+0x49/0x80 [amdgpu]<br>
    [<0000000083291747>] do_vfs_ioctl+0xa4/0x630<br>
    [<00000000722b6176>] ksys_ioctl+0x60/0x90<br>
    [<000000001bfa30dc>] __x64_sys_ioctl+0x16/0x20<br>
    [<000000007862c966>] do_syscall_64+0x55/0x170<br>
    [<00000000a8eeee88>] entry_SYSCALL_64_after_hwframe+0x44/0xa9<br>
    [<000000001242345f>] 0xffffffffffffffff<br>
unreferenced object 0xffff9f837cdd36c0 (size 64):<br>
  comm "gnome-shell", pid 569, jiffies 4294682217 (age 9133.583s)<br>
  hex dump (first 32 bytes):<br>
    d4 23 b4 d5 ab e2 45 94 d0 53 43 86 83 9f ff ff  .#....E..SC.....<br>
    01 00 00 00 04 00 00 00 60 ab cc 5c 83 9f ff ff  ........`..\....<br>
  backtrace:<br>
    [<000000000768e015>] ttm_bo_mem_space+0x41/0x4a0<br>
    [<00000000f11076b2>] ttm_bo_validate+0xc7/0x130<br>
    [<00000000c820992e>] ttm_bo_init_reserved+0x32f/0x390<br>
    [<00000000fcfd5ce2>] amdgpu_bo_do_create+0x1ed/0x420 [amdgpu]<br>
    [<000000001aec1dd8>] amdgpu_bo_create+0x40/0x220 [amdgpu]<br>
    [<000000007da39c30>] amdgpu_gem_object_create+0x9e/0x120 [amdgpu]<br>
    [<00000000099484e9>] amdgpu_gem_create_ioctl+0x1d3/0x290 [amdgpu]<br>
    [<000000009d8251d3>] drm_ioctl_kernel+0xa9/0xf0<br>
    [<0000000050b61811>] drm_ioctl+0x201/0x3a0<br>
    [<000000007c88aae3>] amdgpu_drm_ioctl+0x49/0x80 [amdgpu]<br>
    [<0000000083291747>] do_vfs_ioctl+0xa4/0x630<br>
    [<00000000722b6176>] ksys_ioctl+0x60/0x90<br>
    [<000000001bfa30dc>] __x64_sys_ioctl+0x16/0x20<br>
    [<000000007862c966>] do_syscall_64+0x55/0x170<br>
    [<00000000a8eeee88>] entry_SYSCALL_64_after_hwframe+0x44/0xa9<br>
    [<000000001242345f>] 0xffffffffffffffff<br>
```<br>
  <br>
**Attachment 143156**, "Output of kmemleak":  <br>
[20190118â__kmemleak.txt](/uploads/5a4a528614f9ce4e640ea86e483c503d/20190118â__kmemleak.txt)<br>




### See also
  * https://bugzilla.kernel.org/show_bug.cgi?id=202537
  * https://bugs.freedesktop.org/show_bug.cgi?id=107899