No description
  • C 98.2%
  • Assembly 1%
  • Makefile 0.3%
  • Shell 0.2%
  • Python 0.1%
Find a file
Repository files (latest commit first)
Filename Latest commit message Latest commit date
Changbin Du 73f48c1004 x86/nmi: Remove irq_work from the long duration NMI handler
[ Upstream commit 248ed51048c40d36728e70914e38bffd7821da57 ]

First, printk() is NMI-context safe now since the safe printk() has been
implemented and it already has an irq_work to make NMI-context safe.

Second, this NMI irq_work actually does not work if a NMI handler causes
panic by watchdog timeout. It has no chance to run in such case, while
the safe printk() will flush its per-cpu buffers before panicking.

While at it, repurpose the irq_work callback into a function which
concentrates the NMI duration checking and makes the code easier to
follow.

 [ bp: Massage. ]

Signed-off-by: Changbin Du <changbin.du@gmail.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20200111125427.15662-1-changbin.du@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-02-24 08:36:45 +01:00
arch x86/nmi: Remove irq_work from the long duration NMI handler 2020-02-24 08:36:45 +01:00
block block, bfq: do not plug I/O for bfq_queues with no proc refs 2020-02-24 08:36:31 +01:00
certs
crypto crypto: testmgr - don't try to decrypt uninitialized buffers 2020-02-14 16:34:18 -05:00
Documentation fbdev: fix numbering of fbcon options 2020-02-24 08:36:42 +01:00
drivers bnxt: Detach page from page pool before sending up the stack 2020-02-24 08:36:45 +01:00
fs udf: Fix free space reporting for metadata and virtual partitions 2020-02-24 08:36:44 +01:00
include rcu: Use WRITE_ONCE() for assignments to ->pprev for hlist_nulls 2020-02-24 08:36:45 +01:00
init
ipc ipc/msg.c: consolidate all xxxctl_down() functions 2020-02-11 04:35:07 -08:00
kernel padata: validate cpumask without removed CPU during offline 2020-02-24 08:36:34 +01:00
lib lib/test_kasan.c: fix memory leak in kmalloc_oob_krealloc_more() 2020-02-11 04:35:14 -08:00
LICENSES
mm mm/mmu_gather: invalidate TLB correctly on batch allocation failure and flush 2020-02-11 04:35:42 -08:00
net netfilter: nft_tunnel: add the missing ERSPAN_VERSION nla_policy 2020-02-24 08:36:37 +01:00
samples samples/bpf: Set -fno-stack-protector when building BPF programs 2020-02-24 08:36:36 +01:00
scripts kconfig: fix broken dependency in randconfig-generated .config 2020-02-24 08:36:32 +01:00
security selinux: ensure we cleanup the internal AVC counters on error in avc_update() 2020-02-24 08:36:39 +01:00
sound ASoC: Intel: sof_rt5682: Ignore the speaker amp when there isn't one. 2020-02-24 08:36:43 +01:00
tools usbip: Fix unsafe unaligned pointer usage 2020-02-24 08:36:44 +01:00
usr
virt KVM: arm64: Treat emulated TVAL TimerValue as a signed 32-bit integer 2020-02-14 16:34:18 -05:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS MAINTAINERS: correct entries for ISDN/mISDN section 2020-02-11 04:35:06 -08:00
Makefile Linux 5.4.21 2020-02-19 19:53:10 +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.