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Yifan Zhang bc9e789053 amd/amdkfd: resolve a race in amdgpu_amdkfd_device_fini_sw [ Upstream commit `99d7181bca` ] There is race in amdgpu_amdkfd_device_fini_sw and interrupt. if amdgpu_amdkfd_device_fini_sw run in b/w kfd_cleanup_nodes and kfree(kfd), and KGD interrupt generated. kernel panic log: BUG: kernel NULL pointer dereference, address: 0000000000000098 amdgpu 0000:c8:00.0: amdgpu: Requesting 4 partitions through PSP PGD d78c68067 P4D d78c68067 kfd kfd: amdgpu: Allocated 3969056 bytes on gart PUD 1465b8067 PMD @ Oops: @002 [#1] SMP NOPTI kfd kfd: amdgpu: Total number of KFD nodes to be created: 4 CPU: 115 PID: @ Comm: swapper/115 Kdump: loaded Tainted: G S W OE K RIP: 0010:_raw_spin_lock_irqsave+0x12/0x40 Code: 89 e@ 41 5c c3 cc cc cc cc 66 66 2e Of 1f 84 00 00 00 00 00 OF 1f 40 00 Of 1f 44% 00 00 41 54 9c 41 5c fa 31 cO ba 01 00 00 00 <fO> OF b1 17 75 Ba 4c 89 e@ 41 Sc 89 c6 e8 07 38 5d RSP: 0018: ffffc90@1a6b0e28 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000018 0000000000000001 RSI: ffff8883bb623e00 RDI: 0000000000000098 ffff8883bb000000 RO8: ffff888100055020 ROO: ffff888100055020 0000000000000000 R11: 0000000000000000 R12: 0900000000000002 ffff888F2b97da0@ R14: @000000000000098 R15: ffff8883babdfo00 CS: 010 DS: 0000 ES: 0000 CRO: 0000000080050033 CR2: 0000000000000098 CR3: 0000000e7cae2006 CR4: 0000000002770ce0 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 0000000000000000 DR6: 00000000fffeO7FO DR7: 0000000000000400 PKRU: 55555554 Call Trace: <IRQ> kgd2kfd_interrupt+@x6b/0x1f@ [amdgpu] ? amdgpu_fence_process+0xa4/0x150 [amdgpu] kfd kfd: amdgpu: Node: 0, interrupt_bitmap: 3 YcpxFl Rant tErace amdgpu_irq_dispatch+0x165/0x210 [amdgpu] amdgpu_ih_process+0x80/0x100 [amdgpu] amdgpu: Virtual CRAT table created for GPU amdgpu_irq_handler+0x1f/@x60 [amdgpu] __handle_irq_event_percpu+0x3d/0x170 amdgpu: Topology: Add dGPU node [0x74a2:0x1002] handle_irq_event+0x5a/@xcO handle_edge_irq+0x93/0x240 kfd kfd: amdgpu: KFD node 1 partition @ size 49148M asm_call_irq_on_stack+0xf/@x20 </IRQ> common_interrupt+0xb3/0x130 asm_common_interrupt+0x1le/0x40 5.10.134-010.a1i5000.a18.x86_64 #1 Signed-off-by: Yifan Zhang <yifan1.zhang@amd.com> Reviewed-by: Philip Yang<Philip.Yang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		History 2025-11-13 15:34:30 -05:00
arch	sparc64: fix prototypes of reads[bwl]()	2025-11-13 15:34:28 -05:00
block	blk-cgroup: fix possible deadlock while configuring policy	2025-11-13 15:34:07 -05:00
certs	sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3	2024-09-20 19:52:48 +03:00
crypto	crypto: essiv - Check ssize for decryption and in-place encryption	2025-10-19 16:33:42 +02:00
Documentation	dpll: spec: add missing module-name and clock-id to pin-get reply	2025-11-13 15:33:59 -05:00
drivers	amd/amdkfd: resolve a race in amdgpu_amdkfd_device_fini_sw	2025-11-13 15:34:30 -05:00
fs	ext4: increase IO priority of fastcommit	2025-11-13 15:34:30 -05:00
include	scsi: ufs: core: Disable timestamp functionality if not supported	2025-11-13 15:34:25 -05:00
init	init: handle bootloader identifier in kernel parameters	2025-10-19 16:33:50 +02:00
io_uring	io_uring/zctx: check chained notif contexts	2025-11-13 15:34:03 -05:00
ipc	ipc: fix to protect IPCS lookups using RCU	2025-06-27 11:11:22 +01:00
kernel	uprobe: Do not emulate/sstep original instruction when ip is changed	2025-11-13 15:34:07 -05:00
lib	kunit: test_dev_action: Correctly cast 'priv' pointer to long*	2025-11-13 15:33:57 -05:00
LICENSES	LICENSES: add 0BSD license text	2024-09-01 20:43:24 -07:00
mm	mm: prevent poison consumption when splitting THP	2025-10-29 14:08:57 +01:00
net	net: bridge: Install FDB for bridge MAC on VLAN 0	2025-11-13 15:34:29 -05:00
rust	mm/ksm: fix flag-dropping behavior in ksm_madvise	2025-10-23 16:20:47 +02:00
samples	ftrace/samples: Fix function size computation	2025-09-19 16:35:44 +02:00
scripts	gcc-plugins: Remove TODO_verify_il for GCC >= 16	2025-10-06 11:17:52 +02:00
security	KEYS: trusted_tpm1: Compare HMAC values in constant time	2025-10-19 16:33:51 +02:00
sound	ASoC: qcom: sc8280xp: explicitly set S16LE format in sc8280xp_be_hw_params_fixup()	2025-11-13 15:34:27 -05:00
tools	selftests: forwarding: Reorder (ar)ping arguments to obey POSIX getopt	2025-11-13 15:34:28 -05:00
usr	kbuild: hdrcheck: fix cross build with clang	2025-03-13 13:02:18 +01:00
virt	KVM: Allow CPU to reschedule while setting per-page memory attributes	2025-07-17 18:37:08 +02:00
.clang-format	clang-format: Update with v6.11-rc1's `for_each` macro list	2024-08-02 13:20:31 +02:00
.clippy.toml	rust: give Clippy the minimum supported Rust version	2025-08-01 09:48:44 +01:00
.cocciconfig	scripts: add Linux .cocciconfig for coccinelle	2016-07-22 12:13:39 +02:00
.editorconfig	.editorconfig: remove trim_trailing_whitespace option	2024-06-13 16:47:52 +02:00
.get_maintainer.ignore	Add Jeff Kirsher to .get_maintainer.ignore	2024-03-08 11:36:54 +00:00
.gitattributes	.gitattributes: set diff driver for Rust source code files	2023-05-31 17:48:25 +02:00
.gitignore	rust: introduce `.clippy.toml`	2025-03-13 13:01:42 +01:00
.mailmap	mailmap: add entry for Thorsten Blum	2024-11-07 14:14:59 -08:00
.rustfmt.toml	rust: add `.rustfmt.toml`	2022-09-28 09:02:20 +02:00
COPYING	COPYING: state that all contributions really are covered by this file	2020-02-10 13:32:20 -08:00
CREDITS	MAINTAINERS: Remove self from DSA entry	2024-11-03 12:52:38 -08:00
Kbuild	Kbuild updates for v6.1	2022-10-10 12:00:45 -07:00
Kconfig	kbuild: ensure full rebuild when the compiler is updated	2020-05-12 13:28:33 +09:00
MAINTAINERS	MAINTAINERS: Update Alexey Makhalov's email address	2025-05-22 14:29:46 +02:00
Makefile	Linux 6.12.57	2025-11-02 22:15:23 +09:00
README	README: Fix spelling	2024-03-18 03:36:32 -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 reStructuredText 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.