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Hoang Le f845fe5819 Revert "tipc: use consistent GFP flags" This reverts commit `86c3a3e964`. The tipc_aead_init() function can be calling from an interrupt routine. This allocation might sleep with GFP_KERNEL flag, hence the following BUG is reported. [ 17.657509] BUG: sleeping function called from invalid context at include/linux/sched/mm.h:230 [ 17.660916] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 0, name: swapper/3 [ 17.664093] preempt_count: 302, expected: 0 [ 17.665619] RCU nest depth: 2, expected: 0 [ 17.667163] Preemption disabled at: [ 17.667165] [<0000000000000000>] 0x0 [ 17.669753] CPU: 3 PID: 0 Comm: swapper/3 Kdump: loaded Tainted: G W 5.16.0-rc4+ #1 [ 17.673006] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 17.675540] Call Trace: [ 17.676285] <IRQ> [ 17.676913] dump_stack_lvl+0x34/0x44 [ 17.678033] __might_resched.cold+0xd6/0x10f [ 17.679311] kmem_cache_alloc_trace+0x14d/0x220 [ 17.680663] tipc_crypto_start+0x4a/0x2b0 [tipc] [ 17.682146] ? kmem_cache_alloc_trace+0xd3/0x220 [ 17.683545] tipc_node_create+0x2f0/0x790 [tipc] [ 17.684956] tipc_node_check_dest+0x72/0x680 [tipc] [ 17.686706] ? ___cache_free+0x31/0x350 [ 17.688008] ? skb_release_data+0x128/0x140 [ 17.689431] tipc_disc_rcv+0x479/0x510 [tipc] [ 17.690904] tipc_rcv+0x71c/0x730 [tipc] [ 17.692219] ? __netif_receive_skb_core+0xb7/0xf60 [ 17.693856] tipc_l2_rcv_msg+0x5e/0x90 [tipc] [ 17.695333] __netif_receive_skb_list_core+0x20b/0x260 [ 17.697072] netif_receive_skb_list_internal+0x1bf/0x2e0 [ 17.698870] ? dev_gro_receive+0x4c2/0x680 [ 17.700255] napi_complete_done+0x6f/0x180 [ 17.701657] virtnet_poll+0x29c/0x42e [virtio_net] [ 17.703262] __napi_poll+0x2c/0x170 [ 17.704429] net_rx_action+0x22f/0x280 [ 17.705706] __do_softirq+0xfd/0x30a [ 17.706921] common_interrupt+0xa4/0xc0 [ 17.708206] </IRQ> [ 17.708922] <TASK> [ 17.709651] asm_common_interrupt+0x1e/0x40 [ 17.711078] RIP: 0010:default_idle+0x18/0x20 Fixes: `86c3a3e964` ("tipc: use consistent GFP flags") Acked-by: Jon Maloy <jmaloy@redhat.com> Signed-off-by: Hoang Le <hoang.h.le@dektech.com.au> Link: https://lore.kernel.org/r/20211217030059.5947-1-hoang.h.le@dektech.com.au Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2021-12-17 19:18:48 -08:00
arch	Networking fixes for 5.16-rc6, including fixes from mac80211, wifi, bpf.	2021-12-16 15:02:14 -08:00
block	block-5.16-2021-12-10	2021-12-11 09:25:07 -08:00
certs	certs: Add support for using elliptic curve keys for signing modules	2021-08-23 19:55:42 +03:00
crypto	Update to zstd-1.4.10	2021-11-13 15:32:30 -08:00
Documentation	Networking fixes for 5.16-rc6, including fixes from mac80211, wifi, bpf.	2021-12-16 15:02:14 -08:00
drivers	net: lantiq_xrx200: increase buffer reservation	2021-12-17 19:18:29 -08:00
fs	afs: Fix mmap	2021-12-16 09:10:13 -08:00
include	net: openvswitch: Fix matching zone id for invalid conns arriving from tc	2021-12-17 18:06:36 -08:00
init	kbuild: Fix -Wimplicit-fallthrough=5 error for GCC 5.x and 6.x	2021-11-14 18:59:49 -08:00
ipc	shm: extend forced shm destroy to support objects from several IPC nses	2021-11-20 10:35:54 -08:00
kernel	audit/stable-5.16 PR 20211216	2021-12-16 15:24:46 -08:00
lib	Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf	2021-12-08 16:06:44 -08:00
LICENSES	LICENSES/dual/CC-BY-4.0: Git rid of "smart quotes"	2021-07-15 06:31:24 -06:00
mm	Merge branch 'for-5.16-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu	2021-12-11 16:14:17 -08:00
net	Revert "tipc: use consistent GFP flags"	2021-12-17 19:18:48 -08:00
samples	ftrace/samples: Add module to test multi direct modify interface	2021-12-09 13:02:44 -05:00
scripts	recordmcount.pl: look for jgnop instruction as well as bcrl on s390	2021-12-12 18:52:26 +01:00
security	selinux: fix NULL-pointer dereference when hashtab allocation fails	2021-11-19 16:11:39 -05:00
sound	sound fixes for 5.16-rc5	2021-12-10 11:43:00 -08:00
tools	Networking fixes for 5.16-rc6, including fixes from mac80211, wifi, bpf.	2021-12-16 15:02:14 -08:00
usr	initramfs: Check timestamp to prevent broken cpio archive	2021-10-24 13:48:40 +09:00
virt	KVM: downgrade two BUG_ONs to WARN_ON_ONCE	2021-11-26 06:43:28 -05:00
.clang-format	clang-format: Update with the latest for_each macro list	2021-05-12 23:32:39 +02:00
.cocciconfig
.get_maintainer.ignore	Opt out of scripts/get_maintainer.pl	2019-05-16 10:53:40 -07:00
.gitattributes	.gitattributes: use 'dts' diff driver for dts files	2019-12-04 19:44:11 -08:00
.gitignore	.gitignore: ignore only top-level modules.builtin	2021-05-02 00:43:35 +09:00
.mailmap	mailmap: update email address for Guo Ren	2021-12-10 17:10:55 -08:00
COPYING	COPYING: state that all contributions really are covered by this file	2020-02-10 13:32:20 -08:00
CREDITS	MAINTAINERS: Move Daniel Drake to credits	2021-09-21 08:34:58 +03:00
Kbuild	kbuild: rename hostprogs-y/always to hostprogs/always-y	2020-02-04 01:53:07 +09:00
Kconfig	kbuild: ensure full rebuild when the compiler is updated	2020-05-12 13:28:33 +09:00
MAINTAINERS	Networking fixes for 5.16-rc6, including fixes from mac80211, wifi, bpf.	2021-12-16 15:02:14 -08:00
Makefile	Linux 5.16-rc5	2021-12-12 14:53:01 -08:00
README	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00

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.