linux_dsm_epyc7002/drivers/gpu/drm
Chris Wilson 757a9395f3 drm/i915/gem: Avoid iterating an empty list
Our __sgt_iter assumes that the scattergather list has at least one
element. But during construction we may fail in allocating the first
page, and so mark the first element as the terminator. This is
unexpected!

[22555.524752] RIP: 0010:shmem_get_pages+0x506/0x710 [i915]
[22555.524759] Code: 49 8b 2c 24 31 c0 66 89 44 24 40 48 85 ed 0f 84 62 01 00 00 4c 8b 75 00 8b 5d 08 44 8b 7d 0c 48 8b 0d 7e 34 07 e2 49 83 e6 fc <49> 8b 16 41 01 df 48 89 cf 48 89 d0 48 c1 e8 2d 48 85 c9 0f 84 c8
[22555.524765] RSP: 0018:ffffc9000053f9d0 EFLAGS: 00010246
[22555.524770] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff8881ffffa000
[22555.524774] RDX: fffffffffffffff4 RSI: ffffffffffffffff RDI: ffffffff821efe00
[22555.524778] RBP: ffff8881b099ab00 R08: 0000000000000000 R09: 00000000fffffff4
[22555.524782] R10: 0000000000000002 R11: 00000000ffec0a02 R12: ffff8881cd3c8d60
[22555.524786] R13: 00000000fffffff4 R14: 0000000000000000 R15: 0000000000000000
[22555.524790] FS:  00007f4fbeb9b9c0(0000) GS:ffff8881f8580000(0000) knlGS:0000000000000000
[22555.524795] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[22555.524799] CR2: 0000000000000000 CR3: 00000001ec7f0004 CR4: 00000000001606e0
[22555.524803] Call Trace:
[22555.524919]  __i915_gem_object_get_pages+0x4f/0x60 [i915]

Fixes: 85d1225ec0 ("drm/i915: Introduce & use new lightweight SGL iterators")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: <stable@vger.kernel.org> # v4.8+
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Maciej Patelczyk <maciej.patelczyk@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200522132706.5133-1-chris@chris-wilson.co.uk
(cherry picked from commit 957ad9a02b)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
2020-05-25 15:40:43 +03:00
..
amd Topic pull request for topic/phy-compliance: 2020-04-16 14:52:59 +03:00
arc drm/bridge: Extend bridge API to disable connector creation 2020-02-26 13:31:23 +02:00
arm drm/komeda: mark PM functions as __maybe_unused 2020-03-06 11:25:58 +08:00
armada drm: Remove drm_fb_helper add, add all and remove connector calls 2020-03-06 14:19:58 +01:00
aspeed
ast drm/ast: Use simple encoder 2020-03-02 09:22:43 +01:00
atmel-hlcdc drm/bridge: Extend bridge API to disable connector creation 2020-02-26 13:31:23 +02:00
bochs Linux 5.6 2020-03-31 15:15:47 +10:00
bridge drm/bridge: analogix_dp: Split bind() into probe() and real bind() 2020-04-09 10:29:35 +02:00
cirrus drm/cirrus: add drm_driver.release callback. 2020-02-12 10:24:08 +01:00
etnaviv drm/etnaviv: fix TS cache flushing on GPUs with BLT engine 2020-03-20 18:40:44 +01:00
exynos drm/bridge: analogix_dp: Split bind() into probe() and real bind() 2020-04-09 10:29:35 +02:00
fsl-dcu drm/bridge: Extend bridge API to disable connector creation 2020-02-26 13:31:23 +02:00
gma500 drm: Remove drm_fb_helper add, add all and remove connector calls 2020-03-06 14:19:58 +01:00
hisilicon Linux 5.6-rc5 2020-03-11 07:27:21 +10:00
i2c drm/bridge: Extend bridge API to disable connector creation 2020-02-26 13:31:23 +02:00
i810 drm/i810: Don't include <drm/drm_pci.h> 2019-12-05 08:44:12 +01:00
i915 drm/i915/gem: Avoid iterating an empty list 2020-05-25 15:40:43 +03:00
imx drm/bridge: Extend bridge API to disable connector creation 2020-02-26 13:31:23 +02:00
ingenic drm/bridge: Extend bridge API to disable connector creation 2020-02-26 13:31:23 +02:00
lib
lima drm-misc-next for 5.7: 2020-02-21 05:44:40 +10:00
mcde drm/bridge: Extend bridge API to disable connector creation 2020-02-26 13:31:23 +02:00
mediatek sound updates for 5.7-rc1 2020-04-02 15:50:04 -07:00
meson drm/meson: Add YUV420 output support 2020-03-10 10:51:24 +01:00
mga drm/mga: Don't include <drm/drm_pci.h> 2019-12-05 08:44:16 +01:00
mgag200 drm/mgag200: Use simple encoder 2020-03-02 09:22:49 +01:00
msm IOMMU Updates for Linux v5.7 2020-04-08 11:00:00 -07:00
mxsfb drm/panel: decouple connector from drm_panel 2019-12-09 22:57:26 +01:00
nouveau drm fixes for 5.7-rc1 2020-04-07 20:24:34 -07:00
omapdrm ARM: driver updates 2020-04-03 15:05:35 -07:00
panel drm/panel-simple: drop use of data-mapping property 2020-03-25 21:59:22 +01:00
panfrost drm-misc-next for 5.7: 2020-03-12 12:42:56 +10:00
pl111 drm/pl111: Support Integrator IM-PD1 module 2020-02-16 14:31:30 +01:00
qxl drm/qxl: Use simple encoder 2020-03-02 09:22:56 +01:00
r128 drm/r128: Don't include <drm/drm_pci.h> 2019-12-05 08:44:23 +01:00
radeon pci-v5.7-changes 2020-04-03 14:25:02 -07:00
rcar-du drm/bridge: Extend bridge API to disable connector creation 2020-02-26 13:31:23 +02:00
rockchip drm/bridge: analogix_dp: Split bind() into probe() and real bind() 2020-04-09 10:29:35 +02:00
savage drm/savage: Don't include <drm/drm_pci.h> 2019-12-05 08:44:34 +01:00
scheduler drm/scheduler: fix rare NULL ptr race 2020-03-26 10:22:36 -04:00
selftests drm/modes: Make sure to parse valid rotation value from cmdline 2020-02-12 18:32:54 +01:00
shmobile
sis drm/sis: Don't include <drm/drm_pci.h> 2019-12-05 08:44:55 +01:00
sti drm/bridge: Extend bridge API to disable connector creation 2020-02-26 13:31:23 +02:00
stm drm/bridge: Extend bridge API to disable connector creation 2020-02-26 13:31:23 +02:00
sun4i Linux 5.6-rc5 2020-03-11 07:27:21 +10:00
tdfx drm/tdfx: Don't include <drm/drm_pci.h> 2019-12-05 08:45:01 +01:00
tegra drm/tegra: Changes for v5.7-rc1 2020-03-19 10:11:09 +10:00
tidss drm/tidss: Drop pointless static qualifier in dispc_find_csc() 2020-02-28 14:48:58 +02:00
tilcdc drm/bridge: Extend bridge API to disable connector creation 2020-02-26 13:31:23 +02:00
tiny drm/tiny: fix sparse warning: incorrect type in assignment (different base types) 2020-03-14 08:31:30 +01:00
ttm drm fixes for 5.7-rc1 (part two) 2020-04-10 12:38:28 -07:00
tve200 drm: get drm_bridge_panel connector via helper 2019-12-09 22:57:26 +01:00
udl drm/udl: Clear struct drm_connector_funcs.dpms 2020-02-10 09:24:09 +01:00
v3d drm/v3d: Replace wait_for macros to remove use of msleep 2020-03-04 22:15:34 -08:00
vboxvideo drm/vboxvideo: Add missing remove_conflicting_pci_framebuffers call, v2 2020-03-26 17:03:03 +01:00
vc4 drm/vc4: Fix HDMI mode validation 2020-03-27 13:38:47 +01:00
vgem drm/vgem: Close use-after-free race in vgem_gem_create 2020-02-06 19:04:41 +01:00
via Merge branch 'akpm' (patches from Andrew) 2020-01-31 12:16:36 -08:00
virtio drm/virtio: fix OOB in virtio_gpu_object_create 2020-04-06 15:10:37 +02:00
vkms drm/vkms: Convert to CRTC VBLANK callbacks 2020-02-13 13:10:10 +01:00
vmwgfx Merge branch 'ttm-transhuge' of git://people.freedesktop.org/~thomash/linux into drm-next 2020-04-03 09:07:49 +10:00
xen drm/xen: fix passing zero to 'PTR_ERR' warning 2020-03-31 17:14:51 +02:00
zte drm/zte: plane_state->fb iff plane_state->crtc 2020-01-28 15:43:58 +01:00
drm_agpsupport.c drm: use DIV_ROUND_UP helper macro for calculations 2019-11-04 18:17:36 +01:00
drm_atomic_helper.c drm/bridge: Add the necessary bits to support bus format negotiation 2020-01-31 16:39:53 +01:00
drm_atomic_state_helper.c drm/atomic-helper: fix kerneldoc 2020-02-15 13:21:22 +01:00
drm_atomic_uapi.c drm/atomic: Spell CRTC consistently 2019-12-22 11:13:00 +01:00
drm_atomic.c drm/bridge: Fix the bridge kernel doc 2020-02-18 16:50:45 +01:00
drm_auth.c drm/auth: Drop master_create/destroy hooks 2020-01-29 09:14:11 +01:00
drm_blend.c
drm_bridge_connector.c drm: Add helper to create a connector for a chain of bridges 2020-02-26 13:31:41 +02:00
drm_bridge.c drm: Add helper to create a connector for a chain of bridges 2020-02-26 13:31:41 +02:00
drm_bufs.c drm: bufs: Clean up documentation 2020-03-16 09:26:18 +01:00
drm_cache.c drm/gpu: Fix Memory barrier without comment Issue 2019-10-25 09:35:06 +02:00
drm_client_modeset.c Linux 5.6-rc5 2020-03-11 07:27:21 +10:00
drm_client.c drm/client: Dual licence the file in GPL-2 and MIT 2020-02-29 00:16:12 +01:00
drm_color_mgmt.c drm: Inline drm_color_lut_extract() 2019-11-29 21:29:17 +02:00
drm_connector.c drm/connector: Add helper to get a connector type name 2020-02-26 13:31:18 +02:00
drm_context.c drm: context: Clean up documentation 2020-03-16 09:23:55 +01:00
drm_crtc_helper_internal.h
drm_crtc_helper.c drm: drop unused drm_crtc callback 2020-02-15 21:15:17 +01:00
drm_crtc_internal.h drm: Add getfb2 ioctl 2020-01-14 16:22:17 -05:00
drm_crtc.c
drm_damage_helper.c
drm_debugfs_crc.c drm/crc: Actually allow to change the crc source 2020-01-28 16:49:22 +01:00
drm_debugfs.c drm/debugfs: also take per device driver features into account 2020-01-25 15:49:11 +02:00
drm_dma.c drm: fix parameters documentation style in drm_dma 2020-01-18 10:33:12 +01:00
drm_dp_aux_dev.c drm/dp_mst: Add MST support to DP DPCD R/W functions 2020-01-09 18:07:46 -05:00
drm_dp_cec.c
drm_dp_dual_mode_helper.c
drm_dp_helper.c drm: Add logging function for DP VSC SDP 2020-05-14 13:53:39 +03:00
drm_dp_mst_topology_internal.h
drm_dp_mst_topology.c Linux 5.6 2020-03-31 15:15:47 +10:00
drm_drv.c drm: Nerf drm_global_mutex BKL for good drivers 2020-02-11 15:03:09 +01:00
drm_dsc.c
drm_dumb_buffers.c
drm_edid_load.c
drm_edid.c drm/edid: Distribute switch variables for initialization 2020-03-16 10:54:08 +01:00
drm_encoder_slave.c
drm_encoder.c drm/bridge: Make the bridge chain a double-linked list 2019-12-09 10:03:01 +01:00
drm_fb_cma_helper.c drm/fb-cma-helpers: Fix include issue 2020-01-09 17:33:41 +01:00
drm_fb_helper.c drm: Remove unused arg from drm_fb_helper_init 2020-03-06 14:19:57 +01:00
drm_file.c drm/vmwgfx: Hook up the helpers to align buffer objects 2020-03-24 18:50:35 +01:00
drm_flip_work.c
drm_format_helper.c drm/format_helper: Dual licence the file in GPL 2 and MIT 2020-02-17 10:27:13 +01:00
drm_fourcc.c drm/fourcc: Fill out all block sizes for P210 2019-11-28 11:19:32 +01:00
drm_framebuffer.c drm: Add getfb2 ioctl 2020-01-14 16:22:17 -05:00
drm_gem_cma_helper.c
drm_gem_framebuffer_helper.c drm/gem-fb-helper: convert to drm device based logging 2019-12-19 15:55:10 +02:00
drm_gem_shmem_helper.c drm/shmem: drop pgprot_decrypted() 2020-03-02 07:13:19 +01:00
drm_gem_ttm_helper.c drm/ttm: fix mmap refcounting 2019-11-15 08:00:08 +01:00
drm_gem_vram_helper.c drm/vram: Add helpers to validate a display mode's memory requirements 2020-02-06 10:32:54 +01:00
drm_gem.c drm: Mark up racy check of drm_gem_object.handle_count 2020-03-16 10:31:35 +00:00
drm_hashtab.c
drm_hdcp.c drm/hdcp: optimizing the srm handling 2020-03-04 06:33:00 +05:30
drm_internal.h drm/hdcp: optimizing the srm handling 2020-03-04 06:33:00 +05:30
drm_ioc32.c
drm_ioctl.c drm: Add getfb2 ioctl 2020-01-14 16:22:17 -05:00
drm_irq.c drm/irq: remove check on dev->dev_private 2020-02-11 18:39:47 +02:00
drm_kms_helper_common.c
drm_lease.c drm/lease: fix WARNING in idr_destroy 2020-03-18 14:42:18 +01:00
drm_legacy_misc.c
drm_legacy.h
drm_lock.c drm: lock: Clean up documentation 2020-03-16 09:27:09 +01:00
drm_memory.c
drm_mipi_dbi.c drm/mipi-dbi: Remove sending of vblank event 2020-01-30 09:00:45 +01:00
drm_mipi_dsi.c drm/dsi: add helpers for DSI compression mode and PPS packets 2019-11-07 15:00:16 +02:00
drm_mm.c drm/mm: revert "Break long searches in fragmented address spaces" 2020-03-31 17:35:56 +02:00
drm_mode_config.c drm/modeset: Prime modeset lock vs dma_resv 2019-11-21 11:03:31 +01:00
drm_mode_object.c drm/property: Enforce more lifetime rules 2019-11-04 18:17:36 +01:00
drm_modes.c drm/modes: Make sure to parse valid rotation value from cmdline 2020-02-12 18:32:54 +01:00
drm_modeset_helper.c
drm_modeset_lock.c
drm_of.c drm: of: Add drm_of_lvds_get_dual_link_pixel_order 2019-12-18 02:40:16 +02:00
drm_panel_orientation_quirks.c
drm_panel.c drm/drm_panel: Fix EXPORT of drm_panel_of_backlight() one more time 2019-12-17 20:39:33 +01:00
drm_pci.c drm: Make drm_pci_agp_init legacy 2020-03-09 09:22:50 +00:00
drm_plane_helper.c
drm_plane.c
drm_prime.c drm/prime: fix extracting of the DMA addresses from a scatterlist 2020-04-05 10:44:12 -04:00
drm_print.c drm/print: convert debug category macros into an enum 2019-11-14 14:08:57 +02:00
drm_probe_helper.c drm: Stop accessing encoder->bridge directly 2019-12-09 10:02:45 +01:00
drm_property.c drm: limit to INT_MAX in create_blob ioctl 2019-12-04 19:44:13 -08:00
drm_rect.c drm/rect: update kerneldoc for drm_rect_clip_scaled() 2019-11-28 13:15:43 +01:00
drm_scatter.c drm: prevent a harmless integer overflow in drm_legacy_sg_alloc() 2020-02-29 00:16:12 +01:00
drm_scdc_helper.c
drm_self_refresh_helper.c drm/atomic: fix self-refresh helpers crtc state dereference 2019-11-06 13:00:21 -05:00
drm_simple_kms_helper.c drm/simple-kms: Fix documentation for drm_simple_encoder_init() 2020-03-06 09:24:29 +01:00
drm_syncobj.c drm/syncobj: Add documentation for timeline syncobj 2020-01-20 14:22:21 +01:00
drm_sysfs.c drm: sysfs: Use scnprintf() for avoiding potential buffer overflow 2020-03-11 14:54:09 +01:00
drm_trace_points.c
drm_trace.h
drm_vblank.c drm/vblank: Fix documentation of VBLANK timestamp helper 2020-03-06 09:24:54 +01:00
drm_vm.c drm: vm: Clean up documentation 2020-03-16 09:25:22 +01:00
drm_vma_manager.c
drm_vram_helper_common.c
drm_writeback.c
Kconfig drm: unbreak the DRM menu, broken by DRM_EXPORT_FOR_TESTS 2020-03-06 11:15:43 +00:00
Makefile drm: Add helper to create a connector for a chain of bridges 2020-02-26 13:31:41 +02:00