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Filename Latest commit message Latest commit date
Trond Myklebust 7bf6bf130a NFSv4.0: Fix a use-after-free problem in the asynchronous open()
[ Upstream commit 2fdb05dc0931250574f0cb0ebeb5ed8e20f4a889 ]

Yang Erkun reports that when two threads are opening files at the same
time, and are forced to abort before a reply is seen, then the call to
nfs_release_seqid() in nfs4_opendata_free() can result in a
use-after-free of the pointer to the defunct rpc task of the other
thread.
The fix is to ensure that if the RPC call is aborted before the call to
nfs_wait_on_sequence() is complete, then we must call nfs_release_seqid()
in nfs4_open_release() before the rpc_task is freed.

Reported-by: Yang Erkun <yangerkun@huawei.com>
Fixes: 24ac23ab88 ("NFSv4: Convert open() into an asynchronous RPC call")
Reviewed-by: Yang Erkun <yangerkun@huawei.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-12-14 19:44:40 +01:00
arch um: Always dump trace for specified task in show_stack 2024-12-14 19:44:40 +01:00
block block: fix ordering between checking BLK_MQ_S_STOPPED request adding 2024-12-14 19:44:38 +01:00
certs
crypto crypto: pcrypt - Call crypto layer directly when padata_do_parallel() return -EBUSY 2024-12-14 19:44:23 +01:00
Documentation dt-bindings: clock: axi-clkgen: include AXI clk 2024-12-14 19:44:30 +01:00
drivers rpmsg: glink: Propagate TX failures in intentless mode as well 2024-12-14 19:44:39 +01:00
fs NFSv4.0: Fix a use-after-free problem in the asynchronous open() 2024-12-14 19:44:40 +01:00
include cgroup: Move rcu_head up near the top of cgroup_root 2024-12-14 19:44:35 +01:00
init initramfs: avoid filename buffer overrun 2024-12-14 19:44:21 +01:00
ipc ipc: replace costly bailout check in sysvipc_find_ipc() 2024-09-04 13:15:02 +02:00
kernel cgroup: Make operations on the cgroup root_list RCU safe 2024-12-14 19:44:35 +01:00
lib lib: string_helpers: silence snprintf() output truncation warning 2024-12-14 19:44:39 +01:00
LICENSES
mm mm: revert "mm: shmem: fix data-race in shmem_getattr()" 2024-12-14 19:44:19 +01:00
net SUNRPC: make sure cache entry active before cache_show 2024-12-14 19:44:39 +01:00
samples bpf: Fix the xdp_adjust_tail sample prog issue 2024-12-14 19:44:26 +01:00
scripts kbuild: Use uname for LINUX_COMPILE_HOST detection 2024-12-14 19:44:19 +01:00
security apparmor: fix 'Do simple duplicate message elimination' 2024-12-14 19:44:34 +01:00
sound ALSA: hda/realtek: Apply quirk for Medion E15433 2024-12-14 19:44:38 +01:00
tools perf trace: Avoid garbage when not printing a syscall's arguments 2024-12-14 19:44:32 +01:00
usr
virt KVM: Fix a data race on last_boosted_vcpu in kvm_vcpu_on_spin() 2024-11-08 16:20:47 +01:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore Remove *.orig pattern from .gitignore 2024-11-08 16:20:33 +01:00
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.286 2024-11-17 14:58:53 +01:00
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.