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Eric Dumazet 80f8a66ded Revert "wifi: mac80211: fix memory leak in ieee80211_if_add()" This reverts commit `13e5afd3d7`. ieee80211_if_free() is already called from free_netdev(ndev) because ndev->priv_destructor == ieee80211_if_free syzbot reported: general protection fault, probably for non-canonical address 0xdffffc0000000004: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027] CPU: 0 PID: 10041 Comm: syz-executor.0 Not tainted 6.2.0-rc2-syzkaller-00388-g55b98837e37d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:pcpu_get_page_chunk mm/percpu.c:262 [inline] RIP: 0010:pcpu_chunk_addr_search mm/percpu.c:1619 [inline] RIP: 0010:free_percpu mm/percpu.c:2271 [inline] RIP: 0010:free_percpu+0x186/0x10f0 mm/percpu.c:2254 Code: 80 3c 02 00 0f 85 f5 0e 00 00 48 8b 3b 48 01 ef e8 cf b3 0b 00 48 ba 00 00 00 00 00 fc ff df 48 8d 78 20 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 3b 0e 00 00 48 8b 58 20 48 b8 00 00 00 00 00 fc RSP: 0018:ffffc90004ba7068 EFLAGS: 00010002 RAX: 0000000000000000 RBX: ffff88823ffe2b80 RCX: 0000000000000004 RDX: dffffc0000000000 RSI: ffffffff81c1f4e7 RDI: 0000000000000020 RBP: ffffe8fffe8fc220 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 1ffffffff2179ab2 R12: ffff8880b983d000 R13: 0000000000000003 R14: 0000607f450fc220 R15: ffff88823ffe2988 FS: 00007fcb349de700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32220000 CR3: 000000004914f000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> netdev_run_todo+0x6bf/0x1100 net/core/dev.c:10352 ieee80211_register_hw+0x2663/0x4040 net/mac80211/main.c:1411 mac80211_hwsim_new_radio+0x2537/0x4d80 drivers/net/wireless/mac80211_hwsim.c:4583 hwsim_new_radio_nl+0xa09/0x10f0 drivers/net/wireless/mac80211_hwsim.c:5176 genl_family_rcv_msg_doit.isra.0+0x1e6/0x2d0 net/netlink/genetlink.c:968 genl_family_rcv_msg net/netlink/genetlink.c:1048 [inline] genl_rcv_msg+0x4ff/0x7e0 net/netlink/genetlink.c:1065 netlink_rcv_skb+0x165/0x440 net/netlink/af_netlink.c:2564 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1076 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline] netlink_unicast+0x547/0x7f0 net/netlink/af_netlink.c:1356 netlink_sendmsg+0x91b/0xe10 net/netlink/af_netlink.c:1932 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xd3/0x120 net/socket.c:734 ____sys_sendmsg+0x712/0x8c0 net/socket.c:2476 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2530 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2559 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Reported-by: syzbot <syzkaller@googlegroups.com> Fixes: `13e5afd3d7` ("wifi: mac80211: fix memory leak in ieee80211_if_add()") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Zhengchao Shao <shaozhengchao@huawei.com> Cc: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Kalle Valo <kvalo@kernel.org> Link: https://lore.kernel.org/r/20230113124326.3533978-1-edumazet@google.com		2023-01-16 17:28:52 +02:00
arch	Including fixes from bpf, wifi, and netfilter.	2023-01-05 12:40:50 -08:00
block	block-6.2-2022-12-29	2022-12-29 16:57:29 -08:00
certs	certs: make system keyring depend on built-in x509 parser	2022-09-24 04:31:18 +09:00
crypto	This update includes the following changes:	2022-12-14 12:31:09 -08:00
Documentation	rxrpc: Move call state changes from sendmsg to I/O thread	2023-01-06 09:43:33 +00:00
drivers	wifi: mt76: dma: fix a regression in adding rx buffers	2023-01-16 17:27:17 +02:00
fs	rxrpc: Move call state changes from recvmsg to I/O thread	2023-01-06 09:43:33 +00:00
include	wifi: mac80211: Proper mark iTXQs for resumption	2023-01-10 13:24:12 +01:00
init	Kbuild updates for v6.2	2022-12-19 12:33:32 -06:00
io_uring	io_uring: check for valid register opcode earlier	2022-12-23 06:40:32 -07:00
ipc	Non-MM patches for 6.2-rc1.	2022-12-12 17:28:58 -08:00
kernel	Including fixes from bpf, wifi, and netfilter.	2023-01-05 12:40:50 -08:00
lib	kunit: alloc_string_stream_fragment error handling bug fix	2022-12-26 16:01:36 -07:00
LICENSES	LICENSES: Add the copyleft-next-0.3.1 license	2022-11-08 15:44:01 +01:00
mm	hugetlb: really allocate vma lock for all sharable vmas	2022-12-21 14:31:52 -08:00
net	Revert "wifi: mac80211: fix memory leak in ieee80211_if_add()"	2023-01-16 17:28:52 +02:00
rust	rust: types: add `Opaque` type	2022-12-04 01:59:16 +01:00
samples	Char/Misc driver changes for 6.2-rc1	2022-12-16 03:49:24 -08:00
scripts	fixdep: remove unneeded <stdarg.h> inclusion	2022-12-30 17:26:19 +09:00
security	kernel hardening fixes for v6.2-rc1	2022-12-23 12:00:24 -08:00
sound	ALSA: hda/hdmi: Static PCM mapping again with AMD HDMI codecs	2022-12-28 14:05:06 +01:00
tools	af_unix: selftest: Fix the size of the parameter to connect()	2023-01-09 08:16:13 +00:00
usr	usr/gen_init_cpio.c: remove unnecessary -1 values from int file	2022-10-03 14:21:44 -07:00
virt	Merge branch 'kvm-late-6.1-fixes' into HEAD	2022-12-28 07:19:14 -05:00
.clang-format	iommufd for 6.2	2022-12-14 09:15:43 -08:00
.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	.gitignore: ignore *.rpm	2022-12-30 17:22:14 +09:00
.mailmap	Non-MM patches for 6.2-rc1.	2022-12-12 17:28:58 -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: zram: zsmalloc: Add an additional co-maintainer	2022-12-15 16:37:49 -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	Including fixes from bpf, wifi, and netfilter.	2023-01-05 12:40:50 -08:00
Makefile	Linux 6.2-rc2	2023-01-01 13:53:16 -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.