[Bug 221376] New: AMD RADEON RX 9070 XT - modprobe amdgpu is fail.

[Bug 221376] New: AMD RADEON RX 9070 XT - modprobe amdgpu is fail.

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=221376

            Bug ID: 221376
           Summary: AMD RADEON RX 9070 XT - modprobe amdgpu is fail.
           Product: Drivers
           Version: 2.5
          Hardware: Intel
                OS: Linux
            Status: NEW
          Severity: blocking
          Priority: P3
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: chanisorn.chitsillapavorakul@gmail.com
        Regression: No

Created attachment 309877
  --> https://bugzilla.kernel.org/attachment.cgi?id=309877&action=edit
Hardware info, Boot log, .config, cpuinfo, pciinfo, iomem, ...

Hi / Sawasdee

I found issue about amdgpu while i run "modprobe amdgpu".
My graphic card is AMD RADEON RX 9070 XT.

Best regards
Chanisorn C.

-----------------------------------------------------------------

[  665.195522] Oops: invalid opcode: 0000 [#1] SMP NOPTI
[  665.200616] CPU: 12 UID: 0 PID: 348 Comm: kworker/12:1 Not tainted
6.18.22-x86_64 #1 PREEMPT(none)  32b191964ca8e3668a1a99e4763aaa24b9f95a74
[  665.213239] Hardware name: GIGABYTE MD72-HB1-00/MD72-HB1-00, BIOS F40
12/09/2025
[  665.220645] Workqueue: events work_for_cpu_fn
[  665.225018] RIP: 0010:drm_mm_init+0xc1/0xd0
[  665.229219] Code: 83 05 c2 c5 11 04 01 48 c7 83 f0 00 00 00 00 00 00 00 e8
a2 79 cd ff 48 83 05 b2 c5 11 04 01 5b c3 cc cc cc cc 0f 1f 40 00 90 <0f> 0b 66
66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90
[  665.247994] RSP: 0018:ffa000000d723b60 EFLAGS: 00010246
[  665.253238] RAX: 0000000000000000 RBX: ff11004093c27400 RCX:
000000000000001c
[  665.260380] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
ff11004093c27480
[  665.267522] RBP: 0000000000000003 R08: 0000000000000dc0 R09:
00000000ffffffff
[  665.274686] R10: ff11004093c27400 R11: 0000000000000100 R12:
ff1100408b60f048
[  665.281847] R13: 0000000000000000 R14: 0000000000000000 R15:
000000000000000b
[  665.288985] FS:  0000000000000000(0000) GS:ff11007ffa92d000(0000)
knlGS:0000000000000000
[  665.297080] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  665.302841] CR2: 00007f15ed7d9f55 CR3: 000000000986a002 CR4:
0000000000771ef0
[  665.309987] PKRU: 55555554
[  665.312721] Call Trace:
[  665.315183]  <TASK>
[  665.317294]  ttm_range_man_init_nocheck+0x9d/0x180 [ttm
e3a55dbbe0be4b816fb72e148a49c41281811431]
[  665.326196]  amdgpu_ttm_init.cold+0x45e/0x5cc [amdgpu
48030e986eac021fd575f848f833ad5701b3f0f1]
[  665.336132]  ? vprintk_default+0x24/0x40
[  665.340076]  ? __pfx_amdgpu_bo_destroy+0x10/0x10 [amdgpu
48030e986eac021fd575f848f833ad5701b3f0f1]
[  665.349758]  amdgpu_bo_init.cold+0x5e/0x77 [amdgpu
48030e986eac021fd575f848f833ad5701b3f0f1]
[  665.358984]  gmc_v12_0_sw_init+0x470/0x6f0 [amdgpu
48030e986eac021fd575f848f833ad5701b3f0f1]
[  665.368144]  amdgpu_device_ip_init+0x8f/0xb43 [amdgpu
48030e986eac021fd575f848f833ad5701b3f0f1]
[  665.377685]  ? __pfx_drm_mode_config_init_release+0x10/0x10
[  665.383282]  ? __drmm_add_action_or_reset+0x22/0x60
[  665.388177]  amdgpu_device_init.cold+0x1495/0x1abe [amdgpu
48030e986eac021fd575f848f833ad5701b3f0f1]
[  665.398113]  ? pci_read_config_byte+0x51/0x60
[  665.402483]  amdgpu_driver_load_kms+0x1a/0x80 [amdgpu
48030e986eac021fd575f848f833ad5701b3f0f1]
[  665.411851]  amdgpu_pci_probe+0x28e/0x760 [amdgpu
48030e986eac021fd575f848f833ad5701b3f0f1]
[  665.421055]  local_pci_probe+0x51/0xc0
[  665.425013]  work_for_cpu_fn+0x1d/0x30
[  665.428929]  process_scheduled_works+0x2bc/0x680
[  665.433723]  worker_thread+0x1a6/0x4a0
[  665.437641]  ? _raw_spin_unlock_irqrestore+0x1d/0xa0
[  665.442778]  ? __pfx_worker_thread+0x10/0x10
[  665.447200]  kthread+0x1a4/0x3a0
[  665.450573]  ? __pfx_kthread+0x10/0x10
[  665.454462]  ret_from_fork+0x1f8/0x3b0
[  665.458352]  ? __pfx_kthread+0x10/0x10
[  665.462239]  ret_from_fork_asm+0x1a/0x30
[  665.466294]  </TASK>
[  665.468637] Modules linked in: amdgpu(+) amdxcp drm_ttm_helper ttm drm_exec
drm_panel_backlight_quirks gpu_sched drm_suballoc_helper drm_buddy
drm_display_helper cec rc_core igb i2c_algo_bit
[  665.485989] ---[ end trace 0000000000000000 ]---
Apr 18 12:55:32 localhost kernel: kernel BUG at drivers/gpu/drm/drm_mm.c:930!
[  666.125090] pstore: backend (erst) writing error (-28)
[  666.130558] RIP: 0010:drm_mm_init+0xc1/0xd0
Apr 18 12:55:33 [  666.134915] Code: 83 05 c2 c5 11 04 01 48 c7 83 f0 00 00 00
00 00 00 00 e8 a2 79 cd ff 48 83 05 b2 c5 11 04 01 5b c3 cc cc cc cc 0f 1f 40
00 90 <0f> 0b 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90
localhost kernel[  666.155476] RSP: 0018:ffa000000d723b60 EFLAGS: 00010246
: pstore: backen[  666.161693] RAX: 0000000000000000 RBX: ff11004093c27400 RCX:
000000000000001c
d (erst) writing[  666.170211] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
ff11004093c27480
 error (-28)
[  666.178730] RBP: 0000000000000003 R08: 0000000000000dc0 R09:
00000000ffffffff
[  666.187155] R10: ff11004093c27400 R11: 0000000000000100 R12:
ff1100408b60f048
[  666.194550] R13: 0000000000000000 R14: 0000000000000000 R15:
000000000000000b
[  666.201840] FS:  0000000000000000(0000) GS:ff11007ffa92d000(0000)
knlGS:0000000000000000
[  666.210081] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  666.215985] CR2: 00007f15ed7d9f55 CR3: 000000000986a002 CR4:
0000000000771ef0
[  666.223298] PKRU: 55555554

-----------------------------------------------------------------

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[Bug 221376] AMD RADEON RX 9070 XT - modprobe amdgpu is fail.

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=221376

Artem S. Tashkinov (aros@gmx.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |ANSWERED

--- Comment #1 from Artem S. Tashkinov (aros@gmx.com) ---
Please report here 

https://gitlab.freedesktop.org/drm/amd/-/issues

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[PATCH] drm/amdgpu: fix zero-size GDS range init on RDNA4

[arjan]

From: Arjan van de Ven <arjan@linux.intel.com>

RDNA4 (GFX 12) hardware removes the GDS, GWS, and OA on-chip memory
resources. The gfx_v12_0 initialisation code correctly leaves
adev->gds.gds_size, adev->gds.gws_size, and adev->gds.oa_size at
zero to reflect this.

amdgpu_ttm_init() unconditionally calls amdgpu_ttm_init_on_chip() for
each of these resources regardless of size. When the size is zero,
amdgpu_ttm_init_on_chip() forwards the call to ttm_range_man_init(),
which calls drm_mm_init(mm, 0, 0). drm_mm_init() immediately fires
DRM_MM_BUG_ON(start + size <= start) -- trivially true when size is
zero -- crashing the kernel during modprobe of amdgpu on an RX 9070 XT.

Guard against this by returning 0 early from
amdgpu_ttm_init_on_chip() when size_in_page is zero. This skips TTM
resource manager registration for hardware resources that are absent,
without affecting any other GPU type.

Link: https://lore.kernel.org/all/bug-221376-2300@https.bugzilla.kernel.org%2F/
Link: https://bugzilla.kernel.org/show_bug.cgi?id=221376
Oops-Analysis: http://oops.fenrus.org/reports/bugzilla.korg/221376/report.html
Assisted-by: GitHub Copilot:Claude Sonnet 4.6 linux-kernel-oops-x86.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: amd-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Cc: linux-kernel@vger.kernel.org

---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index afaaab6496def..8075ac735321e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -75,6 +75,9 @@ static int amdgpu_ttm_init_on_chip(struct amdgpu_device *adev,
 				    unsigned int type,
 				    uint64_t size_in_page)
 {
+	if (!size_in_page)
+		return 0;
+
 	return ttm_range_man_init(&adev->mman.bdev, type,
 				  false, size_in_page);
 }

Re: [PATCH] drm/amdgpu: fix zero-size GDS range init on RDNA4

[Christian König]

On 4/20/26 23:57, arjan@linux.intel.com wrote:
> 
> RDNA4 (GFX 12) hardware removes the GDS, GWS, and OA on-chip memory
> resources. The gfx_v12_0 initialisation code correctly leaves
> adev->gds.gds_size, adev->gds.gws_size, and adev->gds.oa_size at
> zero to reflect this.
> 
> amdgpu_ttm_init() unconditionally calls amdgpu_ttm_init_on_chip() for
> each of these resources regardless of size. When the size is zero,
> amdgpu_ttm_init_on_chip() forwards the call to ttm_range_man_init(),
> which calls drm_mm_init(mm, 0, 0). drm_mm_init() immediately fires
> DRM_MM_BUG_ON(start + size <= start) -- trivially true when size is
> zero -- crashing the kernel during modprobe of amdgpu on an RX 9070 XT.

Mhm in general not a bad idea, but we are having tons of GFX 12 systems in our test machines and nothing is crashing there.

We are clearly missing something here. Is that on an upstream kernel or something backported?

Regards,
Christian.

> 
> Guard against this by returning 0 early from
> amdgpu_ttm_init_on_chip() when size_in_page is zero. This skips TTM
> resource manager registration for hardware resources that are absent,
> without affecting any other GPU type.
> 
> Link: https://lore.kernel.org/all/bug-221376-2300@https.bugzilla.kernel.org%2F/
> Link: https://bugzilla.kernel.org/show_bug.cgi?id=221376
> Oops-Analysis: http://oops.fenrus.org/reports/bugzilla.korg/221376/report.html
> Assisted-by: GitHub Copilot:Claude Sonnet 4.6 linux-kernel-oops-x86.
> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
> Cc: Alex Deucher <alexander.deucher@amd.com>
> Cc: "Christian König" <christian.koenig@amd.com>
> Cc: amd-gfx@lists.freedesktop.org
> Cc: dri-devel@lists.freedesktop.org
> Cc: linux-kernel@vger.kernel.org
> 
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c |    3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> index afaaab6496def..8075ac735321e 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> @@ -75,6 +75,9 @@ static int amdgpu_ttm_init_on_chip(struct amdgpu_device *adev,
>                                     unsigned int type,
>                                     uint64_t size_in_page)
>  {
> +       if (!size_in_page)
> +               return 0;
> +
>         return ttm_range_man_init(&adev->mman.bdev, type,
>                                   false, size_in_page);
>  }