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Ido Schimmel 75fa2d8b3c mlxsw: spectrum_acl_tcam: Fix NULL pointer dereference in error path commit `efeb7dfea8` upstream. When calling mlxsw_sp_acl_tcam_region_destroy() from an error path after failing to attach the region to an ACL group, we hit a NULL pointer dereference upon 'region->group->tcam' [1]. Fix by retrieving the 'tcam' pointer using mlxsw_sp_acl_to_tcam(). [1] BUG: kernel NULL pointer dereference, address: 0000000000000000 [...] RIP: 0010:mlxsw_sp_acl_tcam_region_destroy+0xa0/0xd0 [...] Call Trace: mlxsw_sp_acl_tcam_vchunk_get+0x88b/0xa20 mlxsw_sp_acl_tcam_ventry_add+0x25/0xe0 mlxsw_sp_acl_rule_add+0x47/0x240 mlxsw_sp_flower_replace+0x1a9/0x1d0 tc_setup_cb_add+0xdc/0x1c0 fl_hw_replace_filter+0x146/0x1f0 fl_change+0xc17/0x1360 tc_new_tfilter+0x472/0xb90 rtnetlink_rcv_msg+0x313/0x3b0 netlink_rcv_skb+0x58/0x100 netlink_unicast+0x244/0x390 netlink_sendmsg+0x1e4/0x440 ____sys_sendmsg+0x164/0x260 ___sys_sendmsg+0x9a/0xe0 __sys_sendmsg+0x7a/0xc0 do_syscall_64+0x40/0xe0 entry_SYSCALL_64_after_hwframe+0x63/0x6b Fixes: `22a677661f` ("mlxsw: spectrum: Introduce ACL core with simple TCAM implementation") Signed-off-by: Ido Schimmel <idosch@nvidia.com> Reviewed-by: Amit Cohen <amcohen@nvidia.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: Petr Machata <petrm@nvidia.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Link: https://lore.kernel.org/r/fb6a4542bbc9fcab5a523802d97059bffbca7126.1705502064.git.petrm@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> [ For the function mlxsw_sp_acl_to_tcam() is not exist in 6.1.y, pick mlxsw_sp_acl_to_tcam() from commit `74cbc3c03c` ] Signed-off-by: Bin Lan <bin.lan.cn@windriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		History 2024-12-14 19:53:56 +01:00
arch	perf/x86/intel: Hide Topdown metrics events if the feature is not enumerated	2024-12-14 19:53:56 +01:00
block	block: fix bio_split_rw_at to take zone_write_granularity into account	2024-12-14 19:53:15 +01:00
certs	certs: Fix build error when PKCS#11 URI contains semicolon	2023-02-09 11:28:11 +01:00
crypto	crypto: api - Add crypto_clone_tfm	2024-12-14 19:53:51 +01:00
Documentation	fs_parser: update mount_api doc to match function signature	2024-12-14 19:53:48 +01:00
drivers	mlxsw: spectrum_acl_tcam: Fix NULL pointer dereference in error path	2024-12-14 19:53:56 +01:00
fs	btrfs: qgroup: fix qgroup prealloc rsv leak in subvolume operations	2024-12-14 19:53:56 +01:00
include	crypto: api - Add crypto_tfm_get	2024-12-14 19:53:51 +01:00
init	initramfs: avoid filename buffer overrun	2024-12-14 19:53:14 +01:00
io_uring	io_uring: fix possible deadlock in io_register_iowq_max_workers()	2024-11-17 15:07:21 +01:00
ipc	sysctl: treewide: drop unused argument ctl_table_root::set_ownership(table)	2024-08-11 12:35:51 +02:00
kernel	rcu-tasks: Fix access non-existent percpu rtpcp variable in rcu_tasks_need_gpcb()	2024-12-14 19:53:56 +01:00
lib	lib/buildid: Fix build ID parsing logic	2024-11-22 15:37:32 +01:00
LICENSES	LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers	2021-12-16 14:33:10 +01:00
mm	mm: resolve faulty mmap_region() error path behaviour	2024-11-22 15:37:34 +01:00
net	ipmr: fix tables suspicious RCU usage	2024-12-14 19:53:52 +01:00
rust	rust: macros: provide correct provenance when constructing THIS_MODULE	2024-10-17 15:22:24 +02:00
samples	bpf: Fix the xdp_adjust_tail sample prog issue	2024-12-14 19:53:27 +01:00
scripts	kconfig: qconf: fix buffer overflow in debug links	2024-10-17 15:22:03 +02:00
security	apparmor: fix 'Do simple duplicate message elimination'	2024-12-14 19:53:53 +01:00
sound	ALSA: usb-audio: Fix out of bounds reads when finding clock sources	2024-12-14 19:53:54 +01:00
tools	selftests/mount_setattr: Fix failures on 64K PAGE_SIZE kernels	2024-12-14 19:53:48 +01:00
usr	usr/gen_init_cpio.c: remove unnecessary -1 values from int file	2022-10-03 14:21:44 -07:00
virt	KVM: Fix a data race on last_boosted_vcpu in kvm_vcpu_on_spin()	2024-06-27 13:46:21 +02:00
.clang-format	inet: ping: use hlist_nulls rcu iterator during lookup	2022-12-01 12:42:46 +01:00
.cocciconfig	scripts: add Linux .cocciconfig for coccinelle	2016-07-22 12:13:39 +02:00
.get_maintainer.ignore	get_maintainer: add Alan to .get_maintainer.ignore	2022-08-20 15:17:44 -07:00
.gitattributes	.gitattributes: use 'dts' diff driver for dts files	2019-12-04 19:44:11 -08:00
.gitignore	Remove *.orig pattern from .gitignore	2024-10-17 15:21:15 +02:00
.mailmap	9 hotfixes. 6 for MM, 3 for other areas. Four of these patches address	2022-12-10 17:10:52 -08:00
.rustfmt.toml	rust: add `.rustfmt.toml`	2022-09-28 09:02:20 +02:00
COPYING	COPYING: state that all contributions really are covered by this file	2020-02-10 13:32:20 -08:00
CREDITS	MAINTAINERS: Remove Michal Marek from Kbuild maintainers	2022-11-16 14:53:00 +09:00
Kbuild	Kbuild updates for v6.1	2022-10-10 12:00:45 -07:00
Kconfig	kbuild: ensure full rebuild when the compiler is updated	2020-05-12 13:28:33 +09:00
MAINTAINERS	MAINTAINERS: add leah to 6.1 MAINTAINERS file	2024-05-17 11:56:16 +02:00
Makefile	Linux 6.1.119	2024-11-22 15:37:35 +01:00
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.