When an MST connector stays enabled during a commit the connector's MST
state needs to be added to the atomic state, but the corresponding MST
payload allocation shouldn't be set for deletion; fix such modesets by
ensuring the above even if the connector was already enabled before the
modeset.
The issue led to the following:
[ 761.992923] i915 0000:00:02.0: drm_WARN_ON(payload->delete)
[ 761.992949] WARNING: CPU: 6 PID: 1401 at drivers/gpu/drm/display/drm_dp_mst_topology.c:4221 drm_dp_atomic_find_time_slots+0x236/0x280 [drm_display_helper]
[ 761.992955] Modules linked in: snd_hda_intel i915 drm_buddy drm_display_helper drm_kms_helper ttm drm snd_hda_codec_hdmi snd_intel_dspcfg snd_hda_codec snd_hwdep snd_hda_core snd_pcm prime_numbers i2c_algo_bit syscopyarea sysfillrect sysimgblt fb_sys_fops x86_pkg_temp_thermal cdc_ether coretemp crct10dif_pclmul usbnet crc32_pclmul mii ghash_clmulni_intel e1000e mei_me ptp i2c_i801 pps_core mei i2c_smbus intel_lpss_pci fuse [last unloaded: drm]
[ 761.992986] CPU: 6 PID: 1401 Comm: testdisplay Tainted: G U 6.0.0-rc4-imre+ #565
[ 761.992989] Hardware name: Intel Corporation Alder Lake Client Platform/AlderLake-P DDR5 RVP, BIOS ADLPFWI1.R00.3135.A00.
2203251419 03/25/2022
[ 761.992990] RIP: 0010:drm_dp_atomic_find_time_slots+0x236/0x280 [drm_display_helper]
[ 761.992994] Code: 4c 8b 67 50 4d 85 e4 75 03 4c 8b 27 e8 03 28 4e e1 48 c7 c1 8b 26 2c a0 4c 89 e2 48 c7 c7 a8 26 2c a0 48 89 c6 e8 31 d5 88 e1 <0f> 0b 49 8b 85 d0 00 00 00 4c 89 fa 48 c7 c6 a0 41 2c a0 48 8b 78
[ 761.992995] RSP: 0018:
ffffc9000177ba60 EFLAGS:
00010286
[ 761.992998] RAX:
0000000000000000 RBX:
ffff88810d2f1540 RCX:
0000000000000000
[ 761.992999] RDX:
0000000000000001 RSI:
ffffffff82368a25 RDI:
00000000ffffffff
[ 761.993000] RBP:
ffff888142299d80 R08:
ffff8884adbfdfe8 R09:
00000000ffefffff
[ 761.993001] R10:
ffff8884a6bfe000 R11:
ffff8884ac443c30 R12:
ffff888102972f90
[ 761.993002] R13:
ffff8881163e2cf0 R14:
00000000000003ac R15:
ffff88810c501000
[ 761.993003] FS:
00007f81e4c459c0(0000) GS:
ffff888496500000(0000) knlGS:
0000000000000000
[ 761.993004] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 761.993005] CR2:
0000555dac962a98 CR3:
0000000123a34006 CR4:
0000000000770ee0
[ 761.993006] PKRU:
55555554
[ 761.993007] Call Trace:
[ 761.993009] <TASK>
[ 761.993012] intel_dp_mst_compute_config+0x19a/0x350 [i915]
[ 761.993090] intel_atomic_check+0xf37/0x3180 [i915]
[ 761.993168] drm_atomic_check_only+0x5d3/0xa60 [drm]
[ 761.993182] drm_atomic_commit+0x56/0xc0 [drm]
[ 761.993192] ? drm_plane_get_damage_clips.cold+0x1c/0x1c [drm]
[ 761.993204] drm_atomic_helper_set_config+0x78/0xc0 [drm_kms_helper]
[ 761.993214] drm_mode_setcrtc+0x1ed/0x750 [drm]
[ 761.993232] ? drm_mode_getcrtc+0x180/0x180 [drm]
[ 761.993241] drm_ioctl_kernel+0xb5/0x150 [drm]
[ 761.993252] drm_ioctl+0x203/0x3d0 [drm]
[ 761.993261] ? drm_mode_getcrtc+0x180/0x180 [drm]
[ 761.993276] __x64_sys_ioctl+0x8a/0xb0
[ 761.993281] do_syscall_64+0x38/0x90
[ 761.993285] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 761.993287] RIP: 0033:0x7f81e551aaff
[ 761.993288] Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <41> 89 c0 3d 00 f0 ff ff 77 1f 48 8b 44 24 18 64 48 2b 04 25 28 00
[ 761.993290] RSP: 002b:
00007fff4304af10 EFLAGS:
00000246 ORIG_RAX:
0000000000000010
[ 761.993292] RAX:
ffffffffffffffda RBX:
00007fff4304afa0 RCX:
00007f81e551aaff
[ 761.993293] RDX:
00007fff4304afa0 RSI:
00000000c06864a2 RDI:
0000000000000004
[ 761.993294] RBP:
00000000c06864a2 R08:
0000000000000000 R09:
0000555dac8a9c68
[ 761.993294] R10:
0000000000000000 R11:
0000000000000246 R12:
00000000000008c4
[ 761.993295] R13:
0000000000000004 R14:
0000555dac8a9c68 R15:
00007fff4304b098
[ 761.993301] </TASK>
Fixes: 083351e96386 ("drm/display/dp_mst: Fix modeset tracking in drm_dp_atomic_release_vcpi_slots()")
Testcase: igt@testdisplay
Cc: Lyude Paul <lyude@redhat.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220907142542.1681994-1-imre.deak@intel.com
projects / platform / kernel / linux-rpi.git / commitdiff