[Devel] [PATCH RHEL7 COMMIT] ms/netfilter: ipset: call ip_set_free() instead of kfree()
Konstantin Khorenko
khorenko at virtuozzo.com
Fri Jun 14 15:01:20 MSK 2024
The commit is pushed to "branch-rh7-3.10.0-1160.114.2.vz7.222.x-ovz" and will appear at https://src.openvz.org/scm/ovz/vzkernel.git
after rh7-3.10.0-1160.114.2.vz7.222.1
------>
commit 201eb26639d35fb3fc7414bf9a9e039e2b1cd89b
Author: Eric Dumazet <edumazet at google.com>
Date: Mon Jun 29 17:04:17 2020 -0700
ms/netfilter: ipset: call ip_set_free() instead of kfree()
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
mFixes: f66ee0410b1c ("netfilter: ipset: Fix "INFO: rcu detected stall in hash_xxx" reports")
mFixes: 03c8b234e61a ("netfilter: ipset: Generalize extensions support")
Signed-off-by: Eric Dumazet <edumazet at google.com>
Reported-by: syzbot <syzkaller at googlegroups.com>
Signed-off-by: Pablo Neira Ayuso <pablo at netfilter.org>
Found (but not fixes it) in the scope of
https://virtuozzo.atlassian.net/browse/PSBM-155867
(cherry picked from commit c4e8fa9074ad94f80e5c0dcaa16b313e50e958c5)
Signed-off-by: Konstantin Khorenko <khorenko at virtuozzo.com>
---
net/netfilter/ipset/ip_set_bitmap_ip.c | 2 +-
net/netfilter/ipset/ip_set_bitmap_ipmac.c | 2 +-
net/netfilter/ipset/ip_set_bitmap_port.c | 2 +-
net/netfilter/ipset/ip_set_hash_gen.h | 4 ++--
4 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/net/netfilter/ipset/ip_set_bitmap_ip.c b/net/netfilter/ipset/ip_set_bitmap_ip.c
index 488d6d05c65c..a8cd9b5ebf9f 100644
--- a/net/netfilter/ipset/ip_set_bitmap_ip.c
+++ b/net/netfilter/ipset/ip_set_bitmap_ip.c
@@ -317,7 +317,7 @@ bitmap_ip_create(struct net *net, struct ip_set *set, struct nlattr *tb[],
set->variant = &bitmap_ip;
if (!init_map_ip(set, map, first_ip, last_ip,
elements, hosts, netmask)) {
- kfree(map);
+ ip_set_free(map);
return -ENOMEM;
}
if (tb[IPSET_ATTR_TIMEOUT]) {
diff --git a/net/netfilter/ipset/ip_set_bitmap_ipmac.c b/net/netfilter/ipset/ip_set_bitmap_ipmac.c
index 794e0335a864..f0806e54c31a 100644
--- a/net/netfilter/ipset/ip_set_bitmap_ipmac.c
+++ b/net/netfilter/ipset/ip_set_bitmap_ipmac.c
@@ -367,7 +367,7 @@ bitmap_ipmac_create(struct net *net, struct ip_set *set, struct nlattr *tb[],
map->memsize = bitmap_bytes(0, elements - 1);
set->variant = &bitmap_ipmac;
if (!init_map_ipmac(set, map, first_ip, last_ip, elements)) {
- kfree(map);
+ ip_set_free(map);
return -ENOMEM;
}
if (tb[IPSET_ATTR_TIMEOUT]) {
diff --git a/net/netfilter/ipset/ip_set_bitmap_port.c b/net/netfilter/ipset/ip_set_bitmap_port.c
index b561ca8b3659..1306961e9174 100644
--- a/net/netfilter/ipset/ip_set_bitmap_port.c
+++ b/net/netfilter/ipset/ip_set_bitmap_port.c
@@ -251,7 +251,7 @@ bitmap_port_create(struct net *net, struct ip_set *set, struct nlattr *tb[],
map->memsize = bitmap_bytes(0, map->elements);
set->variant = &bitmap_port;
if (!init_map_port(set, map, first_port, last_port)) {
- kfree(map);
+ ip_set_free(map);
return -ENOMEM;
}
if (tb[IPSET_ATTR_TIMEOUT]) {
diff --git a/net/netfilter/ipset/ip_set_hash_gen.h b/net/netfilter/ipset/ip_set_hash_gen.h
index c2a4d769ac7a..596bb2662b0e 100644
--- a/net/netfilter/ipset/ip_set_hash_gen.h
+++ b/net/netfilter/ipset/ip_set_hash_gen.h
@@ -686,7 +686,7 @@ mtype_resize(struct ip_set *set, bool retried)
}
t->hregion = ip_set_alloc(ahash_sizeof_regions(htable_bits));
if (!t->hregion) {
- kfree(t);
+ ip_set_free(t);
ret = -ENOMEM;
goto out;
}
@@ -1534,7 +1534,7 @@ IPSET_TOKEN(HTYPE, _create)(struct net *net, struct ip_set *set,
}
t->hregion = ip_set_alloc(ahash_sizeof_regions(hbits));
if (!t->hregion) {
- kfree(t);
+ ip_set_free(t);
kfree(h);
return -ENOMEM;
}
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