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Filename Latest commit message Latest commit date
Allison Henderson f1f77b1164 net:rds: Fix possible deadlock in rds_message_put 
commit f1acf1ac84d2ae97b7889b87223c1064df850069 upstream.

Functions rds_still_queued and rds_clear_recv_queue lock a given socket
in order to safely iterate over the incoming rds messages. However
calling rds_inc_put while under this lock creates a potential deadlock.
rds_inc_put may eventually call rds_message_purge, which will lock
m_rs_lock. This is the incorrect locking order since m_rs_lock is
meant to be locked before the socket. To fix this, we move the message
item to a local list or variable that wont need rs_recv_lock protection.
Then we can safely call rds_inc_put on any item stored locally after
rs_recv_lock is released.

Fixes: bdbe6fbc6a ("RDS: recv.c")
Reported-by: syzbot+f9db6ff27b9bfdcfeca0@syzkaller.appspotmail.com
Reported-by: syzbot+dcd73ff9291e6d34b3ab@syzkaller.appspotmail.com
Signed-off-by: Allison Henderson <allison.henderson@oracle.com>
Link: https://lore.kernel.org/r/20240209022854.200292-1-allison.henderson@oracle.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-09-04 13:15:03 +02:00
arch openrisc: Call setup_memory() earlier in the init sequence 2024-09-04 13:14:57 +02:00
block
certs
crypto
Documentation overflow: Implement size_t saturating arithmetic helpers 2024-09-04 13:14:51 +02:00
drivers ata: libata-core: Fix null pointer dereference on error 2024-09-04 13:15:02 +02:00
fs filelock: Correct the filelock owner in fcntl_setlk/fcntl_setlk64 2024-09-04 13:15:02 +02:00
include kcm: Serialise kcm_sendmsg() for the same socket. 2024-09-04 13:14:59 +02:00
init
ipc ipc: replace costly bailout check in sysvipc_find_ipc() 2024-09-04 13:15:02 +02:00
kernel cgroup/cpuset: Prevent UAF in proc_cpuset_show() 2024-09-04 13:15:03 +02:00
lib overflow: Implement size_t saturating arithmetic helpers 2024-09-04 13:14:51 +02:00
LICENSES
mm memcg_write_event_control(): fix a user-triggerable oops 2024-09-04 13:14:50 +02:00
net net:rds: Fix possible deadlock in rds_message_put 2024-09-04 13:15:03 +02:00
samples
scripts kbuild: Fix '-S -c' in x86 stack protector scripts 2024-08-19 05:33:53 +02:00
security selinux: fix potential counting error in avc_add_xperms_decision() 2024-09-04 13:14:50 +02:00
sound ALSA: timer: Relax start tick time check for slave timer elements 2024-09-04 13:15:01 +02:00
tools tools: move alignment-related macros to new <linux/align.h> 2024-09-04 13:15:02 +02:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.282 2024-08-19 05:33:54 +02:00
README

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.