| Message ID | 20240620084042.515243-1-vicamo.yang@canonical.com |
|---|---|
| Headers | show |
| Series | Fix amdgpu hangs on DCN 3.5 at bootup | expand |
On Thu, Jun 20, 2024 at 04:40:41PM +0800, You-Sheng Yang wrote: > BugLink: https://bugs.launchpad.net/bugs/2066233 > > [Impact] > > Newer VBIOS on DCN 3.5 bumped the version of IntegratedInfo table from 2.2 to > 2.3. This version uses same structure. Version 2.3 is missing from the > construct_integrated_info() parser, so it leads to NULL pointer dereference. > > ``` > Call Trace: > <TASK> > ? show_regs+0x72/0x90 > ? __die+0x25/0x80 > ? page_fault_oops+0x154/0x4c0 > ? ttm_bo_kmap+0x11d/0x310 [ttm] > ? dma_resv_wait_timeout+0x48/0xe0 > ? do_user_addr_fault+0x30e/0x6e0 > ? exc_page_fault+0x84/0x1b0 > ? asm_exc_page_fault+0x27/0x30 > ? dcn35_clk_mgr_construct+0x183/0x2210 [amdgpu] > ? dcn35_clk_mgr_construct+0x15a/0x2210 [amdgpu] > ? dcn35_hwseq_create+0x23/0x470 [amdgpu] > ``` > > [Fix] > > Fix landed to upstream v6.9-rc7: 9a35d205f466 ("drm/amd/display: Atom > Integrated System Info v2_2 for DCN35") > > [Test Case] > > AMDGPU should then be initialized successfully without NULL pointer deref dump > at boot. > > [Where problems could occur] > > No. New hardware revision with same data only. > > [Other Info] > > While this has been landed to v6.9-rc7, expect every kernel version older than > that with planned support to the new VBIOS update should be fixed. So far > linux/noble and linux-oem-6.8/noble are nominated by chip vendor. > > Gabe Teeger (1): > drm/amd/display: Atom Integrated System Info v2_2 for DCN35 > > drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c | 1 + > 1 file changed, 1 insertion(+) > > -- > 2.43.0 > > > -- > kernel-team mailing list > kernel-team@lists.ubuntu.com > https://lists.ubuntu.com/mailman/listinfo/kernel-team Acked-by: Manuel Diewald <manuel.diewald@canonical.com>
On Thu, Jun 20, 2024 at 04:40:41PM +0800, You-Sheng Yang wrote: > BugLink: https://bugs.launchpad.net/bugs/2066233 Clean cherry-pick. Acked-by: Paolo Pisati <paolo.pisati@canonical.com>
On 20.06.24 10:40, You-Sheng Yang wrote: > BugLink: https://bugs.launchpad.net/bugs/2066233 > > [Impact] > > Newer VBIOS on DCN 3.5 bumped the version of IntegratedInfo table from 2.2 to > 2.3. This version uses same structure. Version 2.3 is missing from the > construct_integrated_info() parser, so it leads to NULL pointer dereference. > > ``` > Call Trace: > <TASK> > ? show_regs+0x72/0x90 > ? __die+0x25/0x80 > ? page_fault_oops+0x154/0x4c0 > ? ttm_bo_kmap+0x11d/0x310 [ttm] > ? dma_resv_wait_timeout+0x48/0xe0 > ? do_user_addr_fault+0x30e/0x6e0 > ? exc_page_fault+0x84/0x1b0 > ? asm_exc_page_fault+0x27/0x30 > ? dcn35_clk_mgr_construct+0x183/0x2210 [amdgpu] > ? dcn35_clk_mgr_construct+0x15a/0x2210 [amdgpu] > ? dcn35_hwseq_create+0x23/0x470 [amdgpu] > ``` > > [Fix] > > Fix landed to upstream v6.9-rc7: 9a35d205f466 ("drm/amd/display: Atom > Integrated System Info v2_2 for DCN35") > > [Test Case] > > AMDGPU should then be initialized successfully without NULL pointer deref dump > at boot. > > [Where problems could occur] > > No. New hardware revision with same data only. > > [Other Info] > > While this has been landed to v6.9-rc7, expect every kernel version older than > that with planned support to the new VBIOS update should be fixed. So far > linux/noble and linux-oem-6.8/noble are nominated by chip vendor. > > Gabe Teeger (1): > drm/amd/display: Atom Integrated System Info v2_2 for DCN35 > > drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c | 1 + > 1 file changed, 1 insertion(+) > Applied to noble:linux/master-next. Thanks. -Stefan
BugLink: https://bugs.launchpad.net/bugs/2066233 [Impact] Newer VBIOS on DCN 3.5 bumped the version of IntegratedInfo table from 2.2 to 2.3. This version uses same structure. Version 2.3 is missing from the construct_integrated_info() parser, so it leads to NULL pointer dereference. ``` Call Trace: <TASK> ? show_regs+0x72/0x90 ? __die+0x25/0x80 ? page_fault_oops+0x154/0x4c0 ? ttm_bo_kmap+0x11d/0x310 [ttm] ? dma_resv_wait_timeout+0x48/0xe0 ? do_user_addr_fault+0x30e/0x6e0 ? exc_page_fault+0x84/0x1b0 ? asm_exc_page_fault+0x27/0x30 ? dcn35_clk_mgr_construct+0x183/0x2210 [amdgpu] ? dcn35_clk_mgr_construct+0x15a/0x2210 [amdgpu] ? dcn35_hwseq_create+0x23/0x470 [amdgpu] ``` [Fix] Fix landed to upstream v6.9-rc7: 9a35d205f466 ("drm/amd/display: Atom Integrated System Info v2_2 for DCN35") [Test Case] AMDGPU should then be initialized successfully without NULL pointer deref dump at boot. [Where problems could occur] No. New hardware revision with same data only. [Other Info] While this has been landed to v6.9-rc7, expect every kernel version older than that with planned support to the new VBIOS update should be fixed. So far linux/noble and linux-oem-6.8/noble are nominated by chip vendor. Gabe Teeger (1): drm/amd/display: Atom Integrated System Info v2_2 for DCN35 drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c | 1 + 1 file changed, 1 insertion(+)