From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Eric Dumazet <edumazet@google.com>,
syzbot <syzkaller@googlegroups.com>,
"David S. Miller" <davem@davemloft.net>
Subject: [PATCH 4.9 09/36] dccp: initialize ireq->ir_mark
Date: Mon, 14 May 2018 08:48:43 +0200 [thread overview]
Message-ID: <20180514064805.006535967@linuxfoundation.org> (raw)
In-Reply-To: <20180514064804.252823817@linuxfoundation.org>
4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Eric Dumazet <edumazet@google.com>
commit b855ff827476adbdc2259e9895681d82b7b26065 upstream.
syzbot reported an uninit-value read of skb->mark in iptable_mangle_hook()
Thanks to the nice report, I tracked the problem to dccp not caring
of ireq->ir_mark for passive sessions.
BUG: KMSAN: uninit-value in ipt_mangle_out net/ipv4/netfilter/iptable_mangle.c:66 [inline]
BUG: KMSAN: uninit-value in iptable_mangle_hook+0x5e5/0x720 net/ipv4/netfilter/iptable_mangle.c:84
CPU: 0 PID: 5300 Comm: syz-executor3 Not tainted 4.16.0+ #81
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x185/0x1d0 lib/dump_stack.c:53
kmsan_report+0x142/0x240 mm/kmsan/kmsan.c:1067
__msan_warning_32+0x6c/0xb0 mm/kmsan/kmsan_instr.c:676
ipt_mangle_out net/ipv4/netfilter/iptable_mangle.c:66 [inline]
iptable_mangle_hook+0x5e5/0x720 net/ipv4/netfilter/iptable_mangle.c:84
nf_hook_entry_hookfn include/linux/netfilter.h:120 [inline]
nf_hook_slow+0x158/0x3d0 net/netfilter/core.c:483
nf_hook include/linux/netfilter.h:243 [inline]
__ip_local_out net/ipv4/ip_output.c:113 [inline]
ip_local_out net/ipv4/ip_output.c:122 [inline]
ip_queue_xmit+0x1d21/0x21c0 net/ipv4/ip_output.c:504
dccp_transmit_skb+0x15eb/0x1900 net/dccp/output.c:142
dccp_xmit_packet+0x814/0x9e0 net/dccp/output.c:281
dccp_write_xmit+0x20f/0x480 net/dccp/output.c:363
dccp_sendmsg+0x12ca/0x12d0 net/dccp/proto.c:818
inet_sendmsg+0x48d/0x740 net/ipv4/af_inet.c:764
sock_sendmsg_nosec net/socket.c:630 [inline]
sock_sendmsg net/socket.c:640 [inline]
___sys_sendmsg+0xec0/0x1310 net/socket.c:2046
__sys_sendmsg net/socket.c:2080 [inline]
SYSC_sendmsg+0x2a3/0x3d0 net/socket.c:2091
SyS_sendmsg+0x54/0x80 net/socket.c:2087
do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
entry_SYSCALL_64_after_hwframe+0x3d/0xa2
RIP: 0033:0x455259
RSP: 002b:00007f1a4473dc68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f1a4473e6d4 RCX: 0000000000455259
RDX: 0000000000000000 RSI: 0000000020b76fc8 RDI: 0000000000000015
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000004f0 R14: 00000000006fa720 R15: 0000000000000000
Uninit was stored to memory at:
kmsan_save_stack_with_flags mm/kmsan/kmsan.c:278 [inline]
kmsan_save_stack mm/kmsan/kmsan.c:293 [inline]
kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:684
__msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:521
ip_queue_xmit+0x1e35/0x21c0 net/ipv4/ip_output.c:502
dccp_transmit_skb+0x15eb/0x1900 net/dccp/output.c:142
dccp_xmit_packet+0x814/0x9e0 net/dccp/output.c:281
dccp_write_xmit+0x20f/0x480 net/dccp/output.c:363
dccp_sendmsg+0x12ca/0x12d0 net/dccp/proto.c:818
inet_sendmsg+0x48d/0x740 net/ipv4/af_inet.c:764
sock_sendmsg_nosec net/socket.c:630 [inline]
sock_sendmsg net/socket.c:640 [inline]
___sys_sendmsg+0xec0/0x1310 net/socket.c:2046
__sys_sendmsg net/socket.c:2080 [inline]
SYSC_sendmsg+0x2a3/0x3d0 net/socket.c:2091
SyS_sendmsg+0x54/0x80 net/socket.c:2087
do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
entry_SYSCALL_64_after_hwframe+0x3d/0xa2
Uninit was stored to memory at:
kmsan_save_stack_with_flags mm/kmsan/kmsan.c:278 [inline]
kmsan_save_stack mm/kmsan/kmsan.c:293 [inline]
kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:684
__msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:521
inet_csk_clone_lock+0x503/0x580 net/ipv4/inet_connection_sock.c:797
dccp_create_openreq_child+0x7f/0x890 net/dccp/minisocks.c:92
dccp_v4_request_recv_sock+0x22c/0xe90 net/dccp/ipv4.c:408
dccp_v6_request_recv_sock+0x290/0x2000 net/dccp/ipv6.c:414
dccp_check_req+0x7b9/0x8f0 net/dccp/minisocks.c:197
dccp_v4_rcv+0x12e4/0x2630 net/dccp/ipv4.c:840
ip_local_deliver_finish+0x6ed/0xd40 net/ipv4/ip_input.c:216
NF_HOOK include/linux/netfilter.h:288 [inline]
ip_local_deliver+0x43c/0x4e0 net/ipv4/ip_input.c:257
dst_input include/net/dst.h:449 [inline]
ip_rcv_finish+0x1253/0x16d0 net/ipv4/ip_input.c:397
NF_HOOK include/linux/netfilter.h:288 [inline]
ip_rcv+0x119d/0x16f0 net/ipv4/ip_input.c:493
__netif_receive_skb_core+0x47cf/0x4a80 net/core/dev.c:4562
__netif_receive_skb net/core/dev.c:4627 [inline]
process_backlog+0x62d/0xe20 net/core/dev.c:5307
napi_poll net/core/dev.c:5705 [inline]
net_rx_action+0x7c1/0x1a70 net/core/dev.c:5771
__do_softirq+0x56d/0x93d kernel/softirq.c:285
Uninit was created at:
kmsan_save_stack_with_flags mm/kmsan/kmsan.c:278 [inline]
kmsan_internal_poison_shadow+0xb8/0x1b0 mm/kmsan/kmsan.c:188
kmsan_kmalloc+0x94/0x100 mm/kmsan/kmsan.c:314
kmem_cache_alloc+0xaab/0xb90 mm/slub.c:2756
reqsk_alloc include/net/request_sock.h:88 [inline]
inet_reqsk_alloc+0xc4/0x7f0 net/ipv4/tcp_input.c:6145
dccp_v4_conn_request+0x5cc/0x1770 net/dccp/ipv4.c:600
dccp_v6_conn_request+0x299/0x1880 net/dccp/ipv6.c:317
dccp_rcv_state_process+0x2ea/0x2410 net/dccp/input.c:612
dccp_v4_do_rcv+0x229/0x340 net/dccp/ipv4.c:682
dccp_v6_do_rcv+0x16d/0x1220 net/dccp/ipv6.c:578
sk_backlog_rcv include/net/sock.h:908 [inline]
__sk_receive_skb+0x60e/0xf20 net/core/sock.c:513
dccp_v4_rcv+0x24d4/0x2630 net/dccp/ipv4.c:874
ip_local_deliver_finish+0x6ed/0xd40 net/ipv4/ip_input.c:216
NF_HOOK include/linux/netfilter.h:288 [inline]
ip_local_deliver+0x43c/0x4e0 net/ipv4/ip_input.c:257
dst_input include/net/dst.h:449 [inline]
ip_rcv_finish+0x1253/0x16d0 net/ipv4/ip_input.c:397
NF_HOOK include/linux/netfilter.h:288 [inline]
ip_rcv+0x119d/0x16f0 net/ipv4/ip_input.c:493
__netif_receive_skb_core+0x47cf/0x4a80 net/core/dev.c:4562
__netif_receive_skb net/core/dev.c:4627 [inline]
process_backlog+0x62d/0xe20 net/core/dev.c:5307
napi_poll net/core/dev.c:5705 [inline]
net_rx_action+0x7c1/0x1a70 net/core/dev.c:5771
__do_softirq+0x56d/0x93d kernel/softirq.c:285
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/dccp/ipv4.c | 1 +
net/dccp/ipv6.c | 1 +
2 files changed, 2 insertions(+)
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -620,6 +620,7 @@ int dccp_v4_conn_request(struct sock *sk
ireq = inet_rsk(req);
sk_rcv_saddr_set(req_to_sk(req), ip_hdr(skb)->daddr);
sk_daddr_set(req_to_sk(req), ip_hdr(skb)->saddr);
+ ireq->ir_mark = inet_request_mark(sk, skb);
ireq->ireq_family = AF_INET;
ireq->ir_iif = sk->sk_bound_dev_if;
--- a/net/dccp/ipv6.c
+++ b/net/dccp/ipv6.c
@@ -349,6 +349,7 @@ static int dccp_v6_conn_request(struct s
ireq->ir_v6_rmt_addr = ipv6_hdr(skb)->saddr;
ireq->ir_v6_loc_addr = ipv6_hdr(skb)->daddr;
ireq->ireq_family = AF_INET6;
+ ireq->ir_mark = inet_request_mark(sk, skb);
if (ipv6_opt_accepted(sk, skb, IP6CB(skb)) ||
np->rxopt.bits.rxinfo || np->rxopt.bits.rxoinfo ||
next prev parent reply other threads:[~2018-05-14 6:48 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-14 6:48 [PATCH 4.9 00/36] 4.9.100-stable review Greg Kroah-Hartman
2018-05-14 6:48 ` [PATCH 4.9 01/36] ipvs: fix rtnl_lock lockups caused by start_sync_thread Greg Kroah-Hartman
2018-05-14 6:48 ` [PATCH 4.9 02/36] IB/device: Convert ib-comp-wq to be CPU-bound Greg Kroah-Hartman
2018-05-14 6:48 ` [PATCH 4.9 03/36] kcm: Call strp_stop before strp_done in kcm_attach Greg Kroah-Hartman
2018-05-14 6:48 ` [PATCH 4.9 04/36] crypto: af_alg - fix possible uninit-value in alg_bind() Greg Kroah-Hartman
2018-05-14 6:48 ` [PATCH 4.9 05/36] netlink: fix uninit-value in netlink_sendmsg Greg Kroah-Hartman
2018-05-14 6:48 ` [PATCH 4.9 06/36] net: fix rtnh_ok() Greg Kroah-Hartman
2018-05-14 6:48 ` [PATCH 4.9 07/36] net: initialize skb->peeked when cloning Greg Kroah-Hartman
2018-05-14 6:48 ` [PATCH 4.9 08/36] net: fix uninit-value in __hw_addr_add_ex() Greg Kroah-Hartman
2018-05-14 6:48 ` Greg Kroah-Hartman [this message]
2018-05-14 6:48 ` [PATCH 4.9 10/36] soreuseport: initialise timewait reuseport field Greg Kroah-Hartman
2018-05-14 6:48 ` [PATCH 4.9 11/36] perf: Remove superfluous allocation error check Greg Kroah-Hartman
2018-05-14 6:48 ` [PATCH 4.9 12/36] tcp: fix TCP_REPAIR_QUEUE bound checking Greg Kroah-Hartman
2018-05-14 6:48 ` [PATCH 4.9 13/36] bdi: Fix oops in wb_workfn() Greg Kroah-Hartman
2018-05-14 6:48 ` [PATCH 4.9 14/36] KVM: PPC: Book3S HV: Fix trap number return from __kvmppc_vcore_entry Greg Kroah-Hartman
2018-05-14 6:48 ` [PATCH 4.9 15/36] f2fs: fix a dead loop in f2fs_fiemap() Greg Kroah-Hartman
2018-05-14 6:48 ` [PATCH 4.9 16/36] arm64: Add work around for Arm Cortex-A55 Erratum 1024718 Greg Kroah-Hartman
2018-05-14 6:48 ` [PATCH 4.9 17/36] gpioib: do not free unrequested descriptors Greg Kroah-Hartman
2018-05-14 6:48 ` [PATCH 4.9 18/36] gpio: fix aspeed_gpio unmask irq Greg Kroah-Hartman
2018-05-14 6:48 ` [PATCH 4.9 19/36] gpio: fix error path in lineevent_create Greg Kroah-Hartman
2018-05-14 6:48 ` [PATCH 4.9 20/36] rfkill: gpio: fix memory leak in probe error path Greg Kroah-Hartman
2018-05-14 6:48 ` [PATCH 4.9 21/36] libata: Apply NOLPM quirk for SanDisk SD7UB3Q*G1001 SSDs Greg Kroah-Hartman
2018-05-14 6:48 ` [PATCH 4.9 22/36] tracing: Fix regex_match_front() to not over compare the test string Greg Kroah-Hartman
2018-05-14 6:48 ` [PATCH 4.9 23/36] can: kvaser_usb: Increase correct stats counter in kvaser_usb_rx_can_msg() Greg Kroah-Hartman
2018-05-14 6:48 ` [PATCH 4.9 24/36] drm/vc4: Fix scaling of uni-planar formats Greg Kroah-Hartman
2018-05-14 6:48 ` [PATCH 4.9 25/36] drm/i915: Fix drm:intel_enable_lvds ERROR message in kernel log Greg Kroah-Hartman
2018-05-14 6:49 ` [PATCH 4.9 26/36] net: atm: Fix potential Spectre v1 Greg Kroah-Hartman
2018-05-14 6:49 ` [PATCH 4.9 27/36] atm: zatm: " Greg Kroah-Hartman
2018-05-14 6:49 ` [PATCH 4.9 28/36] Revert "Bluetooth: btusb: Fix quirk for Atheros 1525/QCA6174" Greg Kroah-Hartman
2018-05-14 6:49 ` [PATCH 4.9 29/36] thermal: exynos: Reading temperature makes sense only when TMU is turned on Greg Kroah-Hartman
2018-05-14 6:49 ` [PATCH 4.9 30/36] thermal: exynos: Propagate error value from tmu_read() Greg Kroah-Hartman
2018-05-14 6:49 ` [PATCH 4.9 31/36] tracing/uprobe_event: Fix strncpy corner case Greg Kroah-Hartman
2018-05-14 6:49 ` [PATCH 4.9 32/36] perf/x86: Fix possible Spectre-v1 indexing for hw_perf_event cache_* Greg Kroah-Hartman
2018-05-14 6:49 ` [PATCH 4.9 33/36] perf/x86/cstate: Fix possible Spectre-v1 indexing for pkg_msr Greg Kroah-Hartman
2018-05-14 6:49 ` [PATCH 4.9 34/36] perf/x86/msr: Fix possible Spectre-v1 indexing in the MSR driver Greg Kroah-Hartman
2018-05-14 6:49 ` [PATCH 4.9 35/36] perf/core: Fix possible Spectre-v1 indexing for ->aux_pages[] Greg Kroah-Hartman
2018-05-14 6:49 ` [PATCH 4.9 36/36] perf/x86: Fix possible Spectre-v1 indexing for x86_pmu::event_map() Greg Kroah-Hartman
2018-05-14 13:05 ` [PATCH 4.9 00/36] 4.9.100-stable review kernelci.org bot
2018-05-14 16:20 ` Guenter Roeck
2018-05-14 22:03 ` Shuah Khan
2018-05-15 5:40 ` Naresh Kamboju
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