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Guchun Chen 56488df9f4 drm/amdgpu: fix NULL pointer dereference [ Upstream commit `3c3dc65433` ] ttm->sg needs to be checked before accessing its child member. Call Trace: amdgpu_ttm_backend_destroy+0x12/0x70 [amdgpu] ttm_bo_cleanup_memtype_use+0x3a/0x60 [ttm] ttm_bo_release+0x17d/0x300 [ttm] amdgpu_bo_unref+0x1a/0x30 [amdgpu] amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu+0x78b/0x8b0 [amdgpu] kfd_ioctl_alloc_memory_of_gpu+0x118/0x220 [amdgpu] kfd_ioctl+0x222/0x400 [amdgpu] ? kfd_dev_is_large_bar+0x90/0x90 [amdgpu] __x64_sys_ioctl+0x8e/0xd0 ? __context_tracking_exit+0x52/0x90 do_syscall_64+0x33/0x80 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f97f264d317 Code: b3 66 90 48 8b 05 71 4b 2d 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 41 4b 2d 00 f7 d8 64 89 01 48 RSP: 002b:00007ffdb402c338 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f97f3cc63a0 RCX: 00007f97f264d317 RDX: 00007ffdb402c380 RSI: 00000000c0284b16 RDI: 0000000000000003 RBP: 00007ffdb402c380 R08: 00007ffdb402c428 R09: 00000000c4000004 R10: 00000000c4000004 R11: 0000000000000246 R12: 00000000c0284b16 R13: 0000000000000003 R14: 00007f97f3cc63a0 R15: 00007f8836200000 Signed-off-by: Guchun Chen <guchun.chen@amd.com> Acked-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-05-11 14:47:30 +02:00
arch	ARM: dts: at91: change the key code of the gpio key	2021-05-11 14:47:20 +02:00
block	block: return -EBUSY when there are open partitions in blkdev_reread_part	2021-04-28 13:39:59 +02:00
certs	certs: Fix blacklist flag type confusion	2021-03-04 11:37:59 +01:00
crypto	crypto: api - check for ERR pointers in crypto_destroy_tfm()	2021-05-11 14:47:16 +02:00
Documentation	dt-bindings: net: ethernet-controller: fix typo in NVMEM	2021-04-14 08:42:12 +02:00
drivers	drm/amdgpu: fix NULL pointer dereference	2021-05-11 14:47:30 +02:00
fs	btrfs: convert logic BUG_ON()'s in replace_path to ASSERT()'s	2021-05-11 14:47:22 +02:00
include	power: supply: bq27xxx: fix power_avg for newer ICs	2021-05-11 14:47:24 +02:00
init	init/Kconfig: make COMPILE_TEST depend on HAS_IOMEM	2021-04-10 13:36:11 +02:00
ipc	ipc: adjust proc_ipc_sem_dointvec definition to match prototype	2020-09-05 12:14:29 -07:00
kernel	sched/fair: Ignore percpu threads for imbalance pulls	2021-05-11 14:47:29 +02:00
lib	dyndbg: fix parsing file query without a line-range suffix	2021-05-11 14:47:11 +02:00
LICENSES	LICENSES/deprecated: add Zlib license text	2020-09-16 14:33:49 +02:00
mm	mm: ptdump: fix build failure	2021-04-21 13:00:57 +02:00
net	net: qrtr: Avoid potential use after free in MHI send	2021-05-07 11:04:31 +02:00
samples	samples, bpf: Add missing munmap in xdpsock	2021-03-17 17:06:12 +01:00
scripts	kasan: fix hwasan build for gcc	2021-04-28 13:40:02 +02:00
security	KEYS: trusted: Fix TPM reservation for seal/unseal	2021-04-28 13:39:59 +02:00
sound	ALSA: usb-audio: Add MIDI quirk for Vox ToneLab EX	2021-05-07 11:04:33 +02:00
tools	selftests/resctrl: Fix checking for < 0 for unsigned values	2021-05-11 14:47:27 +02:00
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: Use kvm_pfn_t for local PFN variable in hva_to_pfn_remapped()	2021-02-26 10:13:01 +01:00
.clang-format	RDMA 5.10 pull request	2020-10-17 11:18:18 -07:00
.cocciconfig
.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	mailmap: add two more addresses of Uwe Kleine-König	2020-12-06 10:19:07 -08:00
COPYING	COPYING: state that all contributions really are covered by this file	2020-02-10 13:32:20 -08:00
CREDITS	MAINTAINERS: Move Jason Cooper to CREDITS	2020-11-30 10:20:34 +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	MAINTAINERS: move the staging subsystem to lists.linux.dev	2021-03-25 09:04:18 +01:00
Makefile	Linux 5.10.35	2021-05-07 11:04:33 +02:00
README	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00

README

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.