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Ido Schimmel efeb7dfea8 mlxsw: spectrum_acl_tcam: Fix NULL pointer dereference in error path 
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>
 		2024-01-18 09:48:08 -08:00
Documentation Networking changes for 6.8. 2024-01-11 10:07:29 -08:00
LICENSES LICENSES: Add the copyleft-next-0.3.1 license 2022-11-08 15:44:01 +01:00
arch Networking changes for 6.8. 2024-01-11 10:07:29 -08:00
block Many singleton patches against the MM code. The patch series which 2024-01-09 11:18:47 -08:00
certs This update includes the following changes: 2023-11-02 16:15:30 -10:00
crypto crypto: scomp - fix req->dst buffer overflow 2023-12-29 11:25:56 +08:00
drivers mlxsw: spectrum_acl_tcam: Fix NULL pointer dereference in error path 2024-01-18 09:48:08 -08:00
fs Networking changes for 6.8. 2024-01-11 10:07:29 -08:00
include net: netdev_queue: netdev_txq_completed_mb(): fix wake condition 2024-01-13 18:26:23 +00:00
init header cleanups for 6.8 2024-01-10 16:43:55 -08:00
io_uring Many singleton patches against the MM code. The patch series which 2024-01-09 11:18:47 -08:00
ipc shm: Slim down dependencies 2023-12-20 19:26:31 -05:00
kernel Networking changes for 6.8. 2024-01-11 10:07:29 -08:00
lib Networking changes for 6.8. 2024-01-11 10:07:29 -08:00
mm Networking changes for 6.8. 2024-01-11 10:07:29 -08:00
net ethtool: netlink: Add missing ethnl_ops_begin/complete 2024-01-18 13:21:06 +01:00
rust net: phy: add Rust Asix PHY driver 2023-12-15 09:35:50 +00:00
samples Networking changes for 6.8. 2024-01-11 10:07:29 -08:00
scripts Networking changes for 6.8. 2024-01-11 10:07:29 -08:00
security header cleanups for 6.8 2024-01-10 16:43:55 -08:00
sound linux_kselftest-kunit-6.8-rc1 2024-01-09 17:16:58 -08:00
tools mlxsw: spectrum_acl_erp: Fix error flow of pool allocation failure 2024-01-18 09:48:08 -08:00
usr usr/Kconfig: fix typos of "its" 2023-12-20 15:02:58 -08:00
virt vfs-6.8.misc 2024-01-08 10:26:08 -08:00
.clang-format iommu: Add for_each_group_device() 2023-05-23 08:15:51 +02:00
.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: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore kbuild: rpm-pkg: generate kernel.spec in rpmbuild/SPECS/ 2023-10-03 20:49:09 +09:00
.mailmap Networking changes for 6.8. 2024-01-11 10:07:29 -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: mark ax25 as Orphan 2024-01-11 16:25:04 -08:00
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: eth: mvneta: update entry 2024-01-14 13:12:26 +00:00
Makefile Quite a lot of kexec work this time around. Many singleton patches in 2024-01-09 11:46:20 -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.