[Bug 104082] amdgpu 0000:07:00.0: swiotlb buffer is full (sz: 2097152 bytes)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104082

--- Comment #16 from Matthew Scheirer <matt.scheirer at gmail.com> ---
I get this as well with a 290 on 4.15 ONLY when DC is enabled. Its a dirty
enough taint to leave btrfs volumes in inconsistent states so its straight
crashing the kernel.

Feb 08 17:06:08 system kernel: RSP: 002b:00007f56c62fc1a8 EFLAGS: 00000246
Feb 08 17:06:08 system kernel: amdgpu 0000:01:00.0: swiotlb buffer is full (sz:
2097152 bytes)
Feb 08 17:06:08 system kernel: swiotlb: coherent allocation failed for device
0000:01:00.0 size=2097152
Feb 08 17:06:08 system kernel: CPU: 5 PID: 2216 Comm: Compositor Tainted: G    
      O     4.15.1-2-ARCH #1
Feb 08 17:06:08 system kernel: Hardware name: ASUS All Series/Z87I-DELUXE, BIOS
1204 11/26/2014
Feb 08 17:06:08 system kernel: Call Trace:
Feb 08 17:06:08 system kernel:  dump_stack+0x5c/0x85
Feb 08 17:06:08 system kernel:  swiotlb_alloc_coherent+0xe0/0x150
Feb 08 17:06:08 system kernel:  ttm_dma_pool_get_pages+0x1f3/0x5c0 [ttm]
Feb 08 17:06:08 system kernel:  ttm_dma_populate+0x24a/0x340 [ttm]
Feb 08 17:06:08 system kernel:  ttm_tt_bind+0x29/0x60 [ttm]
Feb 08 17:06:08 system kernel:  ttm_bo_handle_move_mem+0x5da/0x610 [ttm]
Feb 08 17:06:08 system kernel:  ttm_bo_validate+0x135/0x150 [ttm]
Feb 08 17:06:08 system kernel:  ttm_bo_init_reserved+0x3a7/0x480 [ttm]
Feb 08 17:06:08 system kernel:  amdgpu_bo_do_create+0x1b4/0x420 [amdgpu]
Feb 08 17:06:08 system kernel:  ? amdgpu_fill_buffer+0x310/0x310 [amdgpu]
Feb 08 17:06:08 system kernel:  amdgpu_bo_create+0x50/0x210 [amdgpu]
Feb 08 17:06:08 system kernel:  ? ttm_eu_backoff_reservation+0x4d/0x70 [ttm]
Feb 08 17:06:08 system kernel:  amdgpu_gem_object_create+0x7f/0x110 [amdgpu]
Feb 08 17:06:08 system kernel:  amdgpu_gem_create_ioctl+0x1e6/0x280 [amdgpu]
Feb 08 17:06:08 system kernel:  ? page_add_file_rmap+0x11/0x140
Feb 08 17:06:08 system kernel:  ? amdgpu_gem_object_close+0x1e0/0x1e0 [amdgpu]
Feb 08 17:06:08 system kernel:  drm_ioctl_kernel+0x5b/0xb0 [drm]
Feb 08 17:06:08 system kernel:  drm_ioctl+0x2d5/0x370 [drm]
Feb 08 17:06:08 system kernel:  ? amdgpu_gem_object_close+0x1e0/0x1e0 [amdgpu]
Feb 08 17:06:08 system kernel:  ? __handle_mm_fault+0xd30/0x1260
Feb 08 17:06:08 system kernel:  amdgpu_drm_ioctl+0x49/0x80 [amdgpu]
Feb 08 17:06:08 system kernel:  do_vfs_ioctl+0xa4/0x630
Feb 08 17:06:08 system kernel:  ? __do_page_fault+0x29d/0x500
Feb 08 17:06:08 system kernel:  ? SyS_futex+0x12d/0x180
Feb 08 17:06:08 system kernel:  SyS_ioctl+0x74/0x80
Feb 08 17:06:08 system kernel:  ? do_page_fault+0x32/0x110
Feb 08 17:06:08 system kernel:  entry_SYSCALL_64_fastpath+0x20/0x83
Feb 08 17:06:08 system kernel: RIP: 0033:0x7f56f7570d87

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