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Roberto Sassu f749cb60a0 nfs: Fix KMSAN warning in decode_getfattr_attrs() 
commit dc270d7159699ad6d11decadfce9633f0f71c1db upstream.

Fix the following KMSAN warning:

CPU: 1 UID: 0 PID: 7651 Comm: cp Tainted: G    B
Tainted: [B]=BAD_PAGE
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009)
=====================================================
=====================================================
BUG: KMSAN: uninit-value in decode_getfattr_attrs+0x2d6d/0x2f90
 decode_getfattr_attrs+0x2d6d/0x2f90
 decode_getfattr_generic+0x806/0xb00
 nfs4_xdr_dec_getattr+0x1de/0x240
 rpcauth_unwrap_resp_decode+0xab/0x100
 rpcauth_unwrap_resp+0x95/0xc0
 call_decode+0x4ff/0xb50
 __rpc_execute+0x57b/0x19d0
 rpc_execute+0x368/0x5e0
 rpc_run_task+0xcfe/0xee0
 nfs4_proc_getattr+0x5b5/0x990
 __nfs_revalidate_inode+0x477/0xd00
 nfs_access_get_cached+0x1021/0x1cc0
 nfs_do_access+0x9f/0xae0
 nfs_permission+0x1e4/0x8c0
 inode_permission+0x356/0x6c0
 link_path_walk+0x958/0x1330
 path_lookupat+0xce/0x6b0
 filename_lookup+0x23e/0x770
 vfs_statx+0xe7/0x970
 vfs_fstatat+0x1f2/0x2c0
 __se_sys_newfstatat+0x67/0x880
 __x64_sys_newfstatat+0xbd/0x120
 x64_sys_call+0x1826/0x3cf0
 do_syscall_64+0xd0/0x1b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The KMSAN warning is triggered in decode_getfattr_attrs(), when calling
decode_attr_mdsthreshold(). It appears that fattr->mdsthreshold is not
initialized.

Fix the issue by initializing fattr->mdsthreshold to NULL in
nfs_fattr_init().

Cc: stable@vger.kernel.org # v3.5.x
Fixes: 88034c3d88 ("NFSv4.1 mdsthreshold attribute xdr")
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Signed-off-by: Anna Schumaker <anna.schumaker@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2024-11-14 13:19:37 +01:00
Documentation dt-bindings: net: xlnx,axi-ethernet: Correct phy-mode property value 2024-11-14 13:19:30 +01:00
LICENSES LICENSES: Add the copyleft-next-0.3.1 license 2022-11-08 15:44:01 +01:00
arch arm64: dts: rockchip: Correct GPIO polarity on brcm BT nodes 2024-11-14 13:19:29 +01:00
block block: fix sanity checks in blk_rq_map_user_bvec 2024-11-08 16:28:24 +01:00
certs certs: Reference revocation list for all keyrings 2023-08-17 20:12:41 +00:00
crypto crypto: simd - Do not call crypto_alloc_tfm during registration 2024-10-10 11:57:26 +02:00
drivers dm-unstriped: cast an operand to sector_t to prevent potential uint32_t overflow 2024-11-14 13:19:37 +01:00
fs nfs: Fix KMSAN warning in decode_getfattr_attrs() 2024-11-14 13:19:37 +01:00
include posix-cpu-timers: Clear TICK_DEP_BIT_POSIX_TIMER on clone 2024-11-14 13:19:37 +01:00
init rcu-tasks: Initialize data to eliminate RCU-tasks/do_exit() deadlocks 2024-11-08 16:28:22 +01:00
io_uring io_uring: always lock __io_cqring_overflow_flush 2024-11-08 16:28:27 +01:00
ipc sysctl: treewide: drop unused argument ctl_table_root::set_ownership(table) 2024-08-11 12:47:13 +02:00
kernel posix-cpu-timers: Clear TICK_DEP_BIT_POSIX_TIMER on clone 2024-11-14 13:19:37 +01:00
lib x86/traps: Enable UBSAN traps on x86 2024-11-08 16:28:26 +01:00
mm mm: don't install PMD mappings when THPs are disabled by the hw/process/vma 2024-11-08 16:28:27 +01:00
net rxrpc: Fix missing locking causing hanging calls 2024-11-14 13:19:32 +01:00
rust rust: sync: require `T: Sync` for `LockedBy::access` 2024-10-10 11:57:44 +02:00
samples samples/bpf: Fix compilation errors with cf-protection option 2024-10-04 16:29:19 +02:00
scripts kconfig: qconf: fix buffer overflow in debug links 2024-10-10 11:58:01 +02:00
security security/keys: fix slab-out-of-bounds in key_task_permission 2024-11-14 13:19:30 +01:00
sound ALSA: usb-audio: Add quirk for HP 320 FHD Webcam 2024-11-14 13:19:37 +01:00
tools tools/lib/thermal: Fix sampling handler context ptr 2024-11-14 13:19:33 +01:00
usr initramfs: Encode dependency on KBUILD_BUILD_TIMESTAMP 2023-06-06 17:54:49 +09:00
virt KVM: Use dedicated mutex to protect kvm_usage_count to avoid deadlock 2024-10-04 16:29:47 +02:00
.clang-format iommu: Add for_each_group_device() 2023-05-23 08:15:51 +02:00
.cocciconfig
…
.get_maintainer.ignore get_maintainer: add Alan to .get_maintainer.ignore 2022-08-20 15:17:44 -07:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore Remove *.orig pattern from .gitignore 2024-10-04 16:29:44 +02:00
.mailmap 20 hotfixes. 12 are cc:stable and the remainder address post-6.5 issues 2023-10-24 09:52:16 -10:00
.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 USB: Remove Wireless USB and UWB documentation 2023-08-09 14:17:32 +02:00
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 membarrier: riscv: Add full memory barrier in switch_mm() 2024-09-12 11:11:45 +02:00
Makefile Linux 6.6.60 2024-11-08 16:28:28 +01:00
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.