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Chris Wilson 37df0edf70 drm/i915/gem: Report error for vmap() failure
Convert the NULL pointer from a failed vmap() to ERR_PTR(-ENOMEM) for
propagation.

<1> [269.830447] BUG: kernel NULL pointer dereference, address: 0000000000000000
<1> [269.830455] #PF: supervisor write access in kernel mode
<1> [269.830457] #PF: error_code(0x0002) - not-present page
<6> [269.830459] PGD 0 P4D 0
<4> [269.830465] Oops: 0002 [#1] PREEMPT SMP PTI
<4> [269.830469] CPU: 3 PID: 5789 Comm: i915_selftest Tainted: G     U            5.10.0-rc6-CI-CI_DRM_9412+ #1
<4> [269.830472] Hardware name: Intel Corp. Geminilake/GLK RVP2 LP4SD (07), BIOS GELKRVPA.X64.0062.B30.1708222146 08/22/2017
<4> [269.830636] RIP: 0010:igt_client_fill+0x1b9/0x5f0 [i915]
<4> [269.830640] Code: e8 0c 32 02 00 48 89 c5 48 3d 00 f0 ff ff 0f 87 e9 02 00 00 48 8b 8b 78 06 00 00 44 89 f0 48 89 ef 35 af be ad de 48 c1 e9 02 <f3> ab 0f b6 83 80 03 00 00 89 c2 c0 ea 03 83 e2 02 75 09 83 c8 20
<4> [269.830642] RSP: 0018:ffffc900007a79e8 EFLAGS: 00010206
<4> [269.830645] RAX: 00000000df0bf37b RBX: ffff88811d8af3c0 RCX: 00000000010afc00
<4> [269.830647] RDX: 0000000000000000 RSI: ffffffff822f2b17 RDI: 0000000000000000
<4> [269.830648] RBP: 0000000000000000 R08: ffff888111c80930 R09: 00000000fffffffe
<4> [269.830650] R10: 0000000000000000 R11: 00000000ffbc70e4 R12: ffff88811090f700
<4> [269.830652] R13: ffff88810df60180 R14: 0000000001a64dd4 R15: 0000000000000000
<4> [269.830655] FS:  00007f137b07de40(0000) GS:ffff88817b980000(0000) knlGS:0000000000000000
<4> [269.830657] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [269.830659] CR2: 0000000000000000 CR3: 0000000115984000 CR4: 0000000000350ee0
<4> [269.830661] Call Trace:
<4> [269.830780]  __i915_subtests.cold.7+0x42/0x92 [i915]
<4> [269.830886]  ? __i915_nop_teardown+0x10/0x10 [i915]
<4> [269.830989]  ? __i915_live_setup+0x30/0x30 [i915]
<4> [269.831104]  __run_selftests.part.3+0xf7/0x14c [i915]
<4> [269.831939]  i915_live_selftests.cold.5+0x1f/0x47 [i915]
<4> [269.832027]  i915_pci_probe+0x93/0x1d0 [i915]
<4> [269.832037]  ? _raw_spin_unlock_irqrestore+0x2f/0x50
<4> [269.832043]  pci_device_probe+0x9e/0x110
<4> [269.832049]  really_probe+0x1c4/0x430
<4> [269.832053]  driver_probe_device+0xd9/0x140
<4> [269.832056]  device_driver_attach+0x4a/0x50
<4> [269.832059]  __driver_attach+0x83/0x140
<4> [269.832062]  ? device_driver_attach+0x50/0x50
<4> [269.832064]  ? device_driver_attach+0x50/0x50
<4> [269.832067]  bus_for_each_dev+0x75/0xc0
<4> [269.832070]  bus_add_driver+0x14b/0x1f0
<4> [269.832073]  driver_register+0x66/0xb0
<4> [269.832160]  i915_init+0x70/0x87 [i915]
<4> [269.832164]  ? 0xffffffffa05e3000
<4> [269.832168]  do_one_initcall+0x56/0x2e0
<4> [269.832174]  ? kmem_cache_alloc_trace+0x6a4/0x770
<4> [269.832180]  do_init_module+0x55/0x200
<4> [269.832184]  load_module+0x22a2/0x2480
<4> [269.832191]  ? __do_sys_finit_module+0xad/0x110
<4> [269.832194]  __do_sys_finit_module+0xad/0x110
<4> [269.832199]  do_syscall_64+0x33/0x80
<4> [269.832202]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
<4> [269.832204] RIP: 0033:0x7f137a718839
<4> [269.832208] Code: 00 f3 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 1f f6 2c 00 f7 d8 64 89 01 48
<4> [269.832210] RSP: 002b:00007ffc4267d308 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
<4> [269.832214] RAX: ffffffffffffffda RBX: 000056288b88f0d0 RCX: 00007f137a718839
<4> [269.832216] RDX: 0000000000000000 RSI: 000056288b895850 RDI: 0000000000000007
<4> [269.832218] RBP: 000056288b895850 R08: 312d3d7374736574 R09: 000056288b88c020
<4> [269.832220] R10: 00007ffc4267d450 R11: 0000000000000246 R12: 0000000000000000
<4> [269.832222] R13: 000056288b8877a0 R14: 0000000000000020 R15: 0000000000000045
<4> [269.832226] Modules linked in: i915(+) vgem mei_hdcp snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio x86_pkg_temp_thermal coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel cdc_ether usbnet snd_intel_dspcfg mii snd_hda_codec snd_hwdep snd_hda_core r8169 snd_pcm realtek mei_me mei prime_numbers intel_lpss_pci i2c_hid pinctrl_geminilake [last unloaded: i915]
<4> [269.832264] CR2: 0000000000000000

Fixes: cb2ce93e5b ("drm/i915/gem: Differentiate oom failures from invalid map types")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201201215441.31900-1-chris@chris-wilson.co.uk
2020-12-02 09:51:21 +00:00
arch Linux 5.10-rc3 2020-11-10 14:36:36 +01:00
block blk-mq: mark flush request as IDLE in flush_end_io() 2020-10-30 08:33:49 -06:00
certs .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
crypto drivers-5.10-2020-10-12 2020-10-13 13:04:41 -07:00
Documentation Merge drm/drm-next into drm-misc-next 2020-11-10 17:11:37 +01:00
drivers drm/i915/gem: Report error for vmap() failure 2020-12-02 09:51:21 +00:00
fs Fixes for 5.10-rc3: 2020-11-08 10:23:07 -08:00
include dma-buf: Document that dma-buf size is fixed 2020-11-11 17:30:39 +01:00
init linux-kselftest-kunit-5.10-rc1 2020-10-18 14:45:59 -07:00
ipc ipc: adjust proc_ipc_sem_dointvec definition to match prototype 2020-09-05 12:14:29 -07:00
kernel fork: fix copy_process(CLONE_PARENT) race with the exiting ->real_parent 2020-11-08 11:18:39 -08:00
lib drm fixes for 5.10-rc3 2020-11-06 12:54:00 -08:00
LICENSES LICENSES/deprecated: add Zlib license text 2020-09-16 14:33:49 +02:00
mm Revert "mm: mmap: fix fput in error path v2" 2020-11-05 17:09:18 +01:00
net Networking fixes for 5.10-rc3, including fixes from wireless, can, 2020-11-06 11:50:28 -08:00
samples misc: mic: remove the MIC drivers 2020-10-28 19:12:03 +01:00
scripts Driver core documentation fixes for 5.10-rc3 2020-11-08 11:30:25 -08:00
security ima: Replace zero-length array with flexible-array member 2020-10-29 17:22:59 -05:00
sound ASoC: Fixes for v5.10 2020-11-05 18:19:32 +01:00
tools Linux 5.10-rc3 2020-11-10 14:36:36 +01:00
usr Merge branch 'work.fdpic' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-08-07 13:29:39 -07:00
virt kvm: x86/mmu: Support dirty logging for the TDP MMU 2020-10-23 03:42:13 -04:00
.clang-format RDMA 5.10 pull request 2020-10-17 11:18:18 -07:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore .gitignore: docs: ignore sphinx_*/ directories 2020-09-10 10:44:31 -06:00
.mailmap MAINTAINERS: jarkko.sakkinen@linux.intel.com -> jarkko@kernel.org 2020-10-16 11:11:19 -07:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Move Sangbeom Kim to credits 2020-10-26 10:11:18 +01:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS Merge drm/drm-next into drm-misc-next 2020-11-10 17:11:37 +01:00
Makefile Linux 5.10-rc3 2020-11-08 16:10:16 -08:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.