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Filename Latest commit message Latest commit date
Dan Carpenter 7a79654b90 net: hso: check for allocation failure in hso_create_bulk_serial_device() 
[ Upstream commit 31db0dbd72444abe645d90c20ecb84d668f5af5e ]

In current kernels, small allocations never actually fail so this
patch shouldn't affect runtime.

Originally this error handling code written with the idea that if
the "serial->tiocmget" allocation failed, then we would continue
operating instead of bailing out early.  But in later years we added
an unchecked dereference on the next line.

	serial->tiocmget->serial_state_notification = kzalloc();
        ^^^^^^^^^^^^^^^^^^

Since these allocations are never going fail in real life, this is
mostly a philosophical debate, but I think bailing out early is the
correct behavior that the user would want.  And generally it's safer to
bail as soon an error happens.

Fixes: af0de1303c ("usb: hso: obey DMA rules in tiocmget")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-06-03 08:59:14 +02:00
arch openrisc: Define memory barrier mb 2021-06-03 08:59:11 +02:00
block blk-mq: Swap two calls in blk_mq_exit_queue() 2021-05-19 10:08:30 +02:00
certs
crypto
Documentation Documentation: seccomp: Fix user notification documentation 2021-06-03 08:59:03 +02:00
drivers net: hso: check for allocation failure in hso_create_bulk_serial_device() 2021-06-03 08:59:14 +02:00
fs SMB3: incorrect file id in requests compounded with open 2021-06-03 08:59:12 +02:00
include net: sched: fix tx action rescheduling issue during deactivation 2021-06-03 08:59:13 +02:00
init
ipc
kernel bpf: No need to simulate speculative domain for immediates 2021-05-28 13:10:26 +02:00
lib lib: stackdepot: turn depot_lock spinlock to raw_spinlock 2021-05-22 11:38:30 +02:00
LICENSES
mm mm/hugetlb: fix F_SEAL_FUTURE_WRITE 2021-05-19 10:08:29 +02:00
net net: sched: fix tx action reschedule issue with stopped queue 2021-06-03 08:59:13 +02:00
samples
scripts scripts: switch explicitly to Python 3 2021-05-22 11:38:30 +02:00
security
sound ASoC: cs42l42: Regmap must use_single_read/write 2021-06-03 08:59:13 +02:00
tools perf jevents: Fix getting maximum number of fds 2021-06-03 08:59:08 +02:00
usr
virt KVM: arm64: Initialize VCPU mdcr_el2 before loading it 2021-05-22 11:38:30 +02:00
.clang-format
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Makefile Linux 5.4.123 2021-05-28 13:10:27 +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.