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Eric Dumazet 4f412ae89e netfilter: ipset: call ip_set_free() instead of kfree()
[ Upstream commit c4e8fa9074 ]

Whenever ip_set_alloc() is used, allocated memory can either
use kmalloc() or vmalloc(). We should call kvfree() or
ip_set_free()

invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 21935 Comm: syz-executor.3 Not tainted 5.8.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__phys_addr+0xa7/0x110 arch/x86/mm/physaddr.c:28
Code: 1d 7a 09 4c 89 e3 31 ff 48 d3 eb 48 89 de e8 d0 58 3f 00 48 85 db 75 0d e8 26 5c 3f 00 4c 89 e0 5b 5d 41 5c c3 e8 19 5c 3f 00 <0f> 0b e8 12 5c 3f 00 48 c7 c0 10 10 a8 89 48 ba 00 00 00 00 00 fc
RSP: 0000:ffffc900018572c0 EFLAGS: 00010046
RAX: 0000000000040000 RBX: 0000000000000001 RCX: ffffc9000fac3000
RDX: 0000000000040000 RSI: ffffffff8133f437 RDI: 0000000000000007
RBP: ffffc90098aff000 R08: 0000000000000000 R09: ffff8880ae636cdb
R10: 0000000000000000 R11: 0000000000000000 R12: 0000408018aff000
R13: 0000000000080000 R14: 000000000000001d R15: ffffc900018573d8
FS:  00007fc540c66700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc9dcd67200 CR3: 0000000059411000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 virt_to_head_page include/linux/mm.h:841 [inline]
 virt_to_cache mm/slab.h:474 [inline]
 kfree+0x77/0x2c0 mm/slab.c:3749
 hash_net_create+0xbb2/0xd70 net/netfilter/ipset/ip_set_hash_gen.h:1536
 ip_set_create+0x6a2/0x13c0 net/netfilter/ipset/ip_set_core.c:1128
 nfnetlink_rcv_msg+0xbe8/0xea0 net/netfilter/nfnetlink.c:230
 netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2469
 nfnetlink_rcv+0x1ac/0x420 net/netfilter/nfnetlink.c:564
 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1329
 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1918
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:672
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2352
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2406
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2439
 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45cb19
Code: Bad RIP value.
RSP: 002b:00007fc540c65c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000004fed80 RCX: 000000000045cb19
RDX: 0000000000000000 RSI: 0000000020001080 RDI: 0000000000000003
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000095e R14: 00000000004cc295 R15: 00007fc540c666d4

Fixes: f66ee0410b ("netfilter: ipset: Fix "INFO: rcu detected stall in hash_xxx" reports")
Fixes: 03c8b234e6 ("netfilter: ipset: Generalize extensions support")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-07-16 08:16:37 +02:00
Documentation dt-bindings: display: mediatek: control dpi pins mode to avoid leakage 2020-06-22 09:30:58 +02:00
LICENSES LICENSES: Rename other to deprecated 2019-05-03 06:34:32 -06:00
arch x86/entry: Increase entry_stack size to a full page 2020-07-16 08:16:36 +02:00
block block: release bip in a right way in error path 2020-07-16 08:16:36 +02:00
certs PKCS#7: Refactor verify_pkcs7_signature() 2019-08-05 18:40:18 -04:00
crypto crypto: af_alg - fix use-after-free in af_alg_accept() due to bh_lock_sock() 2020-07-09 09:37:52 +02:00
drivers drm/mediatek: Check plane visibility in atomic_update 2020-07-16 08:16:37 +02:00
fs cifs: update ctime and mtime during truncate 2020-07-16 08:16:35 +02:00
include crypto: af_alg - fix use-after-free in af_alg_accept() due to bh_lock_sock() 2020-07-09 09:37:52 +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 sched/core: Check cpus_mask, not cpus_ptr in __set_cpus_allowed_ptr(), to fix mask corruption 2020-07-16 08:16:36 +02:00
lib test_objagg: Fix potential memory leak in error handling 2020-06-30 15:37:04 -04:00
mm mm, compaction: make capture control handling safe wrt interrupts 2020-07-09 09:37:57 +02:00
net netfilter: ipset: call ip_set_free() instead of kfree() 2020-07-16 08:16:37 +02:00
samples samples/vfs: avoid warning in statx override 2020-07-09 09:37:54 +02:00
scripts recordmcount: support >64k sections 2020-06-30 15:37:05 -04:00
security selinux: fix double free 2020-06-24 17:50:48 +02:00
sound ALSA: hda: Intel: add missing PCI IDs for ICL-H, TGL-H and EKL 2020-07-16 08:16:33 +02:00
tools selftests: tpm: Use /bin/sh instead of /bin/bash 2020-07-09 09:37:51 +02:00
usr initramfs: restore default compression behavior 2020-04-08 09:08:38 +02:00
virt KVM: arm64: Save the host's PtrAuth keys in non-preemptible context 2020-06-17 16:40:38 +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 5.4.51 2020-07-09 09:37:57 +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.