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dfdf674d3c
android_kernel_samsung_a7y1.../drivers/gpu/drm
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Imre Deak dfdf674d3c drm/mst: Fix MST sideband up-reply failure handling 
[ Upstream commit d8fd3722207f154b53c80eee2cf4977c3fc25a92 ]

Fix the breakage resulting in the stacktrace below, due to tx queue
being full when trying to send an up-reply. txmsg->seqno is -1 in this
case leading to a corruption of the mstb object by

	txmsg->dst->tx_slots[txmsg->seqno] = NULL;

in process_single_up_tx_qlock().

[  +0,005162] [drm:process_single_tx_qlock [drm_kms_helper]] set_hdr_from_dst_qlock: failed to find slot
[  +0,000015] [drm:drm_dp_send_up_ack_reply.constprop.19 [drm_kms_helper]] failed to send msg in q -11
[  +0,000939] BUG: kernel NULL pointer dereference, address: 00000000000005a0
[  +0,006982] #PF: supervisor write access in kernel mode
[  +0,005223] #PF: error_code(0x0002) - not-present page
[  +0,005135] PGD 0 P4D 0
[  +0,002581] Oops: 0002 [#1] PREEMPT SMP NOPTI
[  +0,004359] CPU: 1 PID: 1200 Comm: kworker/u16:3 Tainted: G     U            5.2.0-rc1+ #410
[  +0,008433] Hardware name: Intel Corporation Ice Lake Client Platform/IceLake U DDR4 SODIMM PD RVP, BIOS ICLSFWR1.R00.3175.A00.1904261428 04/26/2019
[  +0,013323] Workqueue: i915-dp i915_digport_work_func [i915]
[  +0,005676] RIP: 0010:queue_work_on+0x19/0x70
[  +0,004372] Code: ff ff ff 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 41 56 49 89 f6 41 55 41 89 fd 41 54 55 53 48 89 d3 9c 5d fa e8 e7 81 0c 00 <f0> 48 0f ba 2b 00 73 31 45 31 e4 f7 c5 00 02 00 00 74 13 e8 cf 7f
[  +0,018750] RSP: 0018:ffffc900007dfc50 EFLAGS: 00010006
[  +0,005222] RAX: 0000000000000046 RBX: 00000000000005a0 RCX: 0000000000000001
[  +0,007133] RDX: 000000000001b608 RSI: 0000000000000000 RDI: ffffffff82121972
[  +0,007129] RBP: 0000000000000202 R08: 0000000000000000 R09: 0000000000000001
[  +0,007129] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88847bfa5096
[  +0,007131] R13: 0000000000000010 R14: ffff88849c08f3f8 R15: 0000000000000000
[  +0,007128] FS:  0000000000000000(0000) GS:ffff88849dc80000(0000) knlGS:0000000000000000
[  +0,008083] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  +0,005749] CR2: 00000000000005a0 CR3: 0000000005210006 CR4: 0000000000760ee0
[  +0,007128] PKRU: 55555554
[  +0,002722] Call Trace:
[  +0,002458]  drm_dp_mst_handle_up_req+0x517/0x540 [drm_kms_helper]
[  +0,006197]  ? drm_dp_mst_hpd_irq+0x5b/0x9c0 [drm_kms_helper]
[  +0,005764]  drm_dp_mst_hpd_irq+0x5b/0x9c0 [drm_kms_helper]
[  +0,005623]  ? intel_dp_hpd_pulse+0x205/0x370 [i915]
[  +0,005018]  intel_dp_hpd_pulse+0x205/0x370 [i915]
[  +0,004836]  i915_digport_work_func+0xbb/0x140 [i915]
[  +0,005108]  process_one_work+0x245/0x610
[  +0,004027]  worker_thread+0x37/0x380
[  +0,003684]  ? process_one_work+0x610/0x610
[  +0,004184]  kthread+0x119/0x130
[  +0,003240]  ? kthread_park+0x80/0x80
[  +0,003668]  ret_from_fork+0x24/0x50

Cc: Lyude Paul <lyude@redhat.com>
Cc: Dave Airlie <airlied@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/20190523212433.9058-1-imre.deak@intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-04-07 13:24:56 +02:00
..
amd drm/amdgpu: Check for valid number of registers to read 2020-04-07 08:08:04 +02:00
armada A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
ast A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
atmel-hlcdc A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
bochs A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
bridge A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
cirrus A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
exynos A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
fsl-dcu A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
gma500 drm/gma500: fix memory disclosures due to uninitialized bytes 2020-04-07 13:20:48 +02:00
i2c drm/bridge: adv7511: Fix low refresh rate selection 2020-04-06 19:01:51 +02:00
i810 drm/i810: Prevent underflow in ioctl 2020-04-07 12:45:55 +02:00
i915 drm/i915/cmdparser: Fix jump whitelist clearing 2020-04-07 11:59:34 +02:00
imx A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
mga A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
mgag200 A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
msm A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
nouveau drm/nouveau/i2c: Enable i2c pads & busses during preinit 2020-04-06 20:04:25 +02:00
omapdrm A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
panel drm/panel: simple: Fix panel_simple_dsi_probe 2020-04-06 20:05:46 +02:00
qxl A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
r128 A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
radeon drm/radeon: fix r1xx/r2xx register checker for POT textures 2020-04-07 13:12:57 +02:00
rcar-du A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
rockchip A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
savage A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
shmobile A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
sis A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
sti A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
tdfx A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
tegra A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
tilcdc A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
ttm A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
udl A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
vc4 A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
vgem A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
via A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
virtio drm/virtio: Add memory barriers for capset cache. 2020-04-06 20:06:02 +02:00
vmwgfx drm/vmwgfx: NULL pointer dereference from vmw_cmd_dx_view_define() 2020-04-06 19:03:24 +02:00
ati_pcigart.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_agpsupport.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_atomic_helper.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_atomic.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_auth.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_bridge.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_bufs.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_cache.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_context.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_crtc_helper.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_crtc_internal.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_crtc.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_debugfs.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_dma.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_dp_helper.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_dp_mst_topology.c drm/mst: Fix MST sideband up-reply failure handling 2020-04-07 13:24:56 +02:00
drm_drv.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_edid_load.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_edid.c drm/edid: Add 6 bpc quirk for SDC panel in Lenovo G50 2020-04-07 09:26:48 +02:00
drm_encoder_slave.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_fb_cma_helper.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_fb_helper.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_flip_work.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_fops.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_gem_cma_helper.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_gem.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_global.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_hashtab.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_info.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_internal.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_ioc32.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_ioctl.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_irq.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_legacy.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_lock.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_memory.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_mipi_dsi.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_mm.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_modes.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_modeset_lock.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_of.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_panel.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_pci.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_plane_helper.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_platform.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_prime.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_probe_helper.c drm: Flush output polling on shutdown 2020-04-07 07:37:00 +02:00
drm_rect.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_scatter.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_sysfs.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_trace_points.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_trace.h A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_vm.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
drm_vma_manager.c A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
Kconfig A750FXXU4CTBC 2020-03-27 21:51:54 +05:30
Makefile A750FXXU4CTBC 2020-03-27 21:51:54 +05:30