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Filename Latest commit message Latest commit date
Linus Torvalds cbc98dcc38 signal handling: don't use BUG_ON() for debugging
[ Upstream commit a382f8fee42ca10c9bfce0d2352d4153f931f5dc ]

These are indeed "should not happen" situations, but it turns out recent
changes made the 'task_is_stopped_or_trace()' case trigger (fix for that
exists, is pending more testing), and the BUG_ON() makes it
unnecessarily hard to actually debug for no good reason.

It's been that way for a long time, but let's make it clear: BUG_ON() is
not good for debugging, and should never be used in situations where you
could just say "this shouldn't happen, but we can continue".

Use WARN_ON_ONCE() instead to make sure it gets logged, and then just
continue running.  Instead of making the system basically unusuable
because you crashed the machine while potentially holding some very core
locks (eg this function is commonly called while holding 'tasklist_lock'
for writing).

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-07-21 20:59:27 +02:00
arch ARM: dts: stm32: use the correct clock source for CEC on stm32mp151 2022-07-21 20:59:27 +02:00
block block: fix bio_clone_blkg_association() to associate with proper blkcg_gq 2022-06-14 18:11:50 +02:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:11:22 +02:00
crypto crypto: drbg - make reseeding from get_random_bytes() synchronous 2022-06-22 14:11:18 +02:00
Documentation ipv4: Fix data-races around sysctl_ip_dynaddr. 2022-07-21 20:59:22 +02:00
drivers soc: ixp4xx/npe: Fix unused match warning 2022-07-21 20:59:27 +02:00
fs ext4: fix race condition between ext4_write and ext4_convert_inline_data 2022-07-21 20:59:18 +02:00
include raw: Fix a data-race around sysctl_raw_l3mdev_accept. 2022-07-21 20:59:22 +02:00
init random: handle latent entropy and command line from random_init() 2022-06-22 14:11:17 +02:00
ipc ipc/mqueue: use get_tree_nodev() in mqueue_get_tree() 2022-06-14 18:11:41 +02:00
kernel signal handling: don't use BUG_ON() for debugging 2022-07-21 20:59:27 +02:00
lib ida: don't use BUG_ON() for debugging 2022-07-12 16:30:49 +02:00
LICENSES
mm mm/slub: add missing TID updates on slab deactivation 2022-07-12 16:30:46 +02:00
net net: tipc: fix possible refcount leak in tipc_sk_create() 2022-07-21 20:59:25 +02:00
samples
scripts modpost: fix section mismatch check for exported init/exit sections 2022-06-29 08:58:49 +02:00
security ima: Fix a potential integer overflow in ima_appraise_measurement 2022-07-21 20:59:19 +02:00
sound ASoC: madera: Fix event generation for rate controls 2022-07-21 20:59:26 +02:00
tools selftests: forwarding: fix error message in learning_test 2022-07-12 16:30:49 +02:00
usr
virt
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.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS MAINTAINERS: co-maintain random.c 2022-06-22 14:11:05 +02:00
Makefile Linux 5.4.206 2022-07-15 10:14:53 +02:00
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.