alistair23-linux

redonkable

Fork of alistair23 Linux kernel for reMarkable from https://github.com/alistair23/linux

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Ido Schimmel 31489ed8c2 vxlan: Ensure FDB dump is performed under RCU [ Upstream commit `b5141915b5` ] The commit cited below removed the RCU read-side critical section from rtnl_fdb_dump() which means that the ndo_fdb_dump() callback is invoked without RCU protection. This results in the following warning [1] in the VXLAN driver, which relied on the callback being invoked from an RCU read-side critical section. Fix this by calling rcu_read_lock() in the VXLAN driver, as already done in the bridge driver. [1] WARNING: suspicious RCU usage 5.8.0-rc4-custom-01521-g481007553ce6 #29 Not tainted ----------------------------- drivers/net/vxlan.c:1379 RCU-list traversed in non-reader section!! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 1 lock held by bridge/166: #0: ffffffff85a27850 (rtnl_mutex){+.+.}-{3:3}, at: netlink_dump+0xea/0x1090 stack backtrace: CPU: 1 PID: 166 Comm: bridge Not tainted 5.8.0-rc4-custom-01521-g481007553ce6 #29 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-2.fc32 04/01/2014 Call Trace: dump_stack+0x100/0x184 lockdep_rcu_suspicious+0x153/0x15d vxlan_fdb_dump+0x51e/0x6d0 rtnl_fdb_dump+0x4dc/0xad0 netlink_dump+0x540/0x1090 __netlink_dump_start+0x695/0x950 rtnetlink_rcv_msg+0x802/0xbd0 netlink_rcv_skb+0x17a/0x480 rtnetlink_rcv+0x22/0x30 netlink_unicast+0x5ae/0x890 netlink_sendmsg+0x98a/0xf40 __sys_sendto+0x279/0x3b0 __x64_sys_sendto+0xe6/0x1a0 do_syscall_64+0x54/0xa0 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fe14fa2ade0 Code: Bad RIP value. RSP: 002b:00007fff75bb5b88 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00005614b1ba0020 RCX: 00007fe14fa2ade0 RDX: 000000000000011c RSI: 00007fff75bb5b90 RDI: 0000000000000003 RBP: 00007fff75bb5b90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00005614b1b89160 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Fixes: `5e6d243587` ("bridge: netlink dump interface at par with brctl") Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-08-11 15:33:40 +02:00
Documentation	doc: dt: bindings: usb: dwc3: Update entries for disabling SS instances in park mode	2020-07-22 09:32:59 +02:00
LICENSES	LICENSES: Rename other to deprecated	2019-05-03 06:34:32 -06:00
arch	Revert "powerpc/kasan: Fix shadow pages allocation failure"	2020-08-11 15:33:39 +02:00
block	block: fix get_max_segment_size() overflow on 32bit arch	2020-07-22 09:33:17 +02:00
certs	PKCS#7: Refactor verify_pkcs7_signature()	2019-08-05 18:40:18 -04:00
crypto	keys: asymmetric: fix error return code in software_key_query()	2020-07-22 09:33:04 +02:00
drivers	vxlan: Ensure FDB dump is performed under RCU	2020-08-11 15:33:40 +02:00
fs	xattr: break delegations in {set,remove}xattr	2020-08-11 15:33:39 +02:00
include	ipv6: fix memory leaks on IPV6_ADDRFORM path	2020-08-11 15:33:39 +02:00
init	x86: Fix early boot crash on gcc-10, third try	2020-05-20 08:20:34 +02:00
ipc	ipc/util.c: sysvipc_find_ipc() incorrectly updates position index	2020-05-20 08:20:16 +02:00
kernel	perf/core: Fix endless multiplex timer	2020-08-11 15:33:32 +02:00
lib	random32: remove net_rand_state from the latent entropy gcc plugin	2020-08-07 09:34:01 +02:00
mm	mm/filemap.c: don't bother dropping mmap_sem for zero size readahead	2020-08-05 09:59:41 +02:00
net	rxrpc: Fix race between recvmsg and sendmsg on immediate call failure	2020-08-11 15:33:40 +02:00
samples	samples/vfs: avoid warning in statx override	2020-07-09 09:37:54 +02:00
scripts	scripts: add dummy report mode to add_namespace.cocci	2020-08-11 15:33:35 +02:00
security	Smack: fix use-after-free in smk_write_relabel_self()	2020-08-11 15:33:35 +02:00
sound	ALSA: hda: fix NULL pointer dereference during suspend	2020-08-11 15:33:37 +02:00
tools	tools lib traceevent: Fix memory leak in process_dynamic_array_len	2020-08-11 15:33:38 +02:00
usr	initramfs: restore default compression behavior	2020-04-08 09:08:38 +02:00
virt	KVM: arm64: Don't inherit exec permission across page-table levels	2020-08-05 09:59:51 +02:00
.clang-format	clang-format: Update with the latest for_each macro list	2019-08-31 10:00:51 +02:00
.cocciconfig	…
.get_maintainer.ignore	Opt out of scripts/get_maintainer.pl	2019-05-16 10:53:40 -07:00
.gitattributes	.gitattributes: set git diff driver for C source code files	2016-10-07 18:46:30 -07:00
.gitignore	Modules updates for v5.4	2019-09-22 10:34:46 -07:00
.mailmap	ARM: SoC fixes	2019-11-10 13:41:59 -08:00
COPYING	COPYING: use the new text with points to the license files	2018-03-23 12:41:45 -06:00
CREDITS	MAINTAINERS: Remove Simon as Renesas SoC Co-Maintainer	2019-10-10 08:12:51 -07:00
Kbuild	kbuild: do not descend to ./Kbuild when cleaning	2019-08-21 21:03:58 +09:00
Kconfig	docs: kbuild: convert docs to ReST and rename to *.rst	2019-06-14 14:21:21 -06:00
MAINTAINERS	MAINTAINERS: Update drm/i915 bug filing URL	2020-02-28 17:22:19 +01:00
Makefile	Linux 5.4.57	2020-08-07 09:34:02 +02:00
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.