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Chris Wilson f7073fb98e drm/i915/gem: Remove stolen node before releasing the region
If this stolen object holds the last reference to the region, we need to
remove our drm_mm_node before freeing the region's drm_mm.

<4> [431.679591] Memory manager not clean during takedown.
<4> [431.679633] WARNING: CPU: 0 PID: 110 at drivers/gpu/drm/drm_mm.c:999 drm_mm_takedown+0x51/0x100
<4> [431.679655] Modules linked in: i915 vgem btusb snd_hda_codec_hdmi btrtl btbcm btintel snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio bluetooth coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel ecdh_generic ecc r8169 realtek lpc_ich snd_intel_dspcfg snd_hda_codec snd_hwdep snd_hda_core snd_pcm pinctrl_cherryview prime_numbers [last unloaded: i915]
<4> [431.679883] CPU: 0 PID: 110 Comm: kworker/u4:3 Tainted: G     U            5.11.0-rc3-CI-CI_DRM_9583+ #1
<4> [431.679895] Hardware name:  /NUC5CPYB, BIOS PYBSWCEL.86A.0058.2016.1102.1842 11/02/2016
<4> [431.679905] Workqueue: i915 __i915_gem_free_work [i915]
<4> [431.680831] RIP: 0010:drm_mm_takedown+0x51/0x100
<4> [431.680850] Code: 44 24 08 65 48 33 04 25 28 00 00 00 0f 85 b6 00 00 00 48 83 c4 10 5b 5d 41 5c c3 48 89 fb 48 c7 c7 c8 b7 38 82 e8 00 d6 37 00 <0f> 0b 48 8b 3d 96 d5 d1 00 ba 00 10 00 00 be c0 0c 00 00 e8 d7 64
<4> [431.680862] RSP: 0018:ffffc90000ad7dc0 EFLAGS: 00010282
<4> [431.680879] RAX: 0000000000000000 RBX: ffff8881109aa140 RCX: 0000000000000001
<4> [431.680888] RDX: 0000000080000001 RSI: ffffffff8235a70f RDI: 00000000ffffffff
<4> [431.680897] RBP: ffff8881109aa178 R08: 0000000000000001 R09: 0000000000000001
<4> [431.680906] R10: 0000000025eaec48 R11: 00000000f5b271a7 R12: ffff88810a38ddc0
<4> [431.680916] R13: 00000000ffffffff R14: ffffffff82861b70 R15: ffff88810b715538
<4> [431.680925] FS:  0000000000000000(0000) GS:ffff88817b800000(0000) knlGS:0000000000000000
<4> [431.680935] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [431.680945] CR2: 000056377cfd7c48 CR3: 00000001045de000 CR4: 00000000001006f0
<4> [431.680954] Call Trace:
<4> [431.680977]  __intel_memory_region_destroy+0x24/0x50 [i915]
<4> [431.681340]  i915_gem_object_release_stolen+0x26/0x40 [i915]
<4> [431.681637]  __i915_gem_free_objects.isra.21+0x1ef/0x3b0 [i915]
<4> [431.681935]  process_one_work+0x270/0x5c0
<4> [431.682022]  worker_thread+0x37/0x380
<4> [431.682047]  ? process_one_work+0x5c0/0x5c0
<4> [431.682062]  kthread+0x146/0x170
<4> [431.682077]  ? kthread_park+0x80/0x80
<4> [431.682098]  ret_from_fork+0x22/0x30
<4> [431.682153] irq event stamp: 1872905
<4> [431.682162] hardirqs last  enabled at (1872911): [<ffffffff8112bd9a>] console_unlock+0x49a/0x580
<4> [431.682176] hardirqs last disabled at (1872916): [<ffffffff8112bd06>] console_unlock+0x406/0x580
<4> [431.682187] softirqs last  enabled at (1872850): [<ffffffff81e00342>] __do_softirq+0x342/0x48e
<4> [431.682201] softirqs last disabled at (1872845): [<ffffffff81c00f52>] asm_call_irq_on_stack+0x12/0x20
<4> [431.682214] ---[ end trace 5d3bcd818e2e3816 ]---
<3> [431.686188] [drm:drm_mm_takedown] *ERROR* node [0002d000 + 00004000]: inserted at
 drm_mm_insert_node_in_range+0x34a/0x5b0
 i915_gem_stolen_insert_node_in_range+0x7b/0xa0 [i915]
 _i915_gem_object_create_stolen+0x83/0xd0 [i915]
 i915_gem_object_create_region+0x61/0x140 [i915]
 intel_engine_create_ring+0x176/0x230 [i915]

Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/2927
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210112015000.16108-1-chris@chris-wilson.co.uk
2021-01-12 09:47:12 +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 doc: Fix build of documentation after i915 file rename 2020-12-15 06:22:31 -08:00
drivers drm/i915/gem: Remove stolen node before releasing the region 2021-01-12 09:47:12 +00:00
fs Fixes for 5.10-rc3: 2020-11-08 10:23:07 -08:00
include drm/i915/gt: Track the overall awake/busy time 2020-12-17 22:26:38 +00:00
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.