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d5e4d0a5e6
User space could send an invalid INET_DIAG_REQ_PROTOCOL attribute
as caught by syzbot.
BUG: KMSAN: uninit-value in inet_diag_lock_handler net/ipv4/inet_diag.c:55 [inline]
BUG: KMSAN: uninit-value in __inet_diag_dump+0x58c/0x720 net/ipv4/inet_diag.c:1147
CPU: 0 PID: 8505 Comm: syz-executor174 Not tainted 5.9.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x21c/0x280 lib/dump_stack.c:118
kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:122
__msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:219
inet_diag_lock_handler net/ipv4/inet_diag.c:55 [inline]
__inet_diag_dump+0x58c/0x720 net/ipv4/inet_diag.c:1147
inet_diag_dump_compat+0x2a5/0x380 net/ipv4/inet_diag.c:1254
netlink_dump+0xb73/0x1cb0 net/netlink/af_netlink.c:2246
__netlink_dump_start+0xcf2/0xea0 net/netlink/af_netlink.c:2354
netlink_dump_start include/linux/netlink.h:246 [inline]
inet_diag_rcv_msg_compat+0x5da/0x6c0 net/ipv4/inet_diag.c:1288
sock_diag_rcv_msg+0x24f/0x620 net/core/sock_diag.c:256
netlink_rcv_skb+0x6d7/0x7e0 net/netlink/af_netlink.c:2470
sock_diag_rcv+0x63/0x80 net/core/sock_diag.c:275
netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline]
netlink_unicast+0x11c8/0x1490 net/netlink/af_netlink.c:1330
netlink_sendmsg+0x173a/0x1840 net/netlink/af_netlink.c:1919
sock_sendmsg_nosec net/socket.c:651 [inline]
sock_sendmsg net/socket.c:671 [inline]
____sys_sendmsg+0xc82/0x1240 net/socket.c:2353
___sys_sendmsg net/socket.c:2407 [inline]
__sys_sendmsg+0x6d1/0x820 net/socket.c:2440
__do_sys_sendmsg net/socket.c:2449 [inline]
__se_sys_sendmsg+0x97/0xb0 net/socket.c:2447
__x64_sys_sendmsg+0x4a/0x70 net/socket.c:2447
do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x441389
Code: e8 fc ab 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 1b 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fff3b02ce98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441389
RDX: 0000000000000000 RSI: 0000000020001500 RDI: 0000000000000003
RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8
R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000402130
R13: 00000000004021c0 R14: 0000000000000000 R15: 0000000000000000
Uninit was created at:
kmsan_save_stack_with_flags mm/kmsan/kmsan.c:143 [inline]
kmsan_internal_poison_shadow+0x66/0xd0 mm/kmsan/kmsan.c:126
kmsan_slab_alloc+0x8a/0xe0 mm/kmsan/kmsan_hooks.c:80
slab_alloc_node mm/slub.c:2907 [inline]
__kmalloc_node_track_caller+0x9aa/0x12f0 mm/slub.c:4511
__kmalloc_reserve net/core/skbuff.c:142 [inline]
__alloc_skb+0x35f/0xb30 net/core/skbuff.c:210
alloc_skb include/linux/skbuff.h:1094 [inline]
netlink_alloc_large_skb net/netlink/af_netlink.c:1176 [inline]
netlink_sendmsg+0xdb9/0x1840 net/netlink/af_netlink.c:1894
sock_sendmsg_nosec net/socket.c:651 [inline]
sock_sendmsg net/socket.c:671 [inline]
____sys_sendmsg+0xc82/0x1240 net/socket.c:2353
___sys_sendmsg net/socket.c:2407 [inline]
__sys_sendmsg+0x6d1/0x820 net/socket.c:2440
__do_sys_sendmsg net/socket.c:2449 [inline]
__se_sys_sendmsg+0x97/0xb0 net/socket.c:2447
__x64_sys_sendmsg+0x4a/0x70 net/socket.c:2447
do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Fixes:
|
||
|---|---|---|
| .. | ||
| 6lowpan | ||
| 9p | ||
| 802 | ||
| 8021q | ||
| appletalk | ||
| atm | ||
| ax25 | ||
| batman-adv | ||
| bluetooth | ||
| bpf | ||
| bpfilter | ||
| bridge | ||
| caif | ||
| can | ||
| ceph | ||
| core | ||
| dcb | ||
| dccp | ||
| decnet | ||
| dns_resolver | ||
| dsa | ||
| ethernet | ||
| ethtool | ||
| hsr | ||
| ieee802154 | ||
| ife | ||
| ipv4 | ||
| ipv6 | ||
| iucv | ||
| kcm | ||
| key | ||
| l2tp | ||
| l3mdev | ||
| lapb | ||
| llc | ||
| mac80211 | ||
| mac802154 | ||
| mpls | ||
| mptcp | ||
| ncsi | ||
| netfilter | ||
| netlabel | ||
| netlink | ||
| netrom | ||
| nfc | ||
| nsh | ||
| openvswitch | ||
| packet | ||
| phonet | ||
| psample | ||
| qrtr | ||
| rds | ||
| rfkill | ||
| rose | ||
| rxrpc | ||
| sched | ||
| sctp | ||
| smc | ||
| strparser | ||
| sunrpc | ||
| switchdev | ||
| tipc | ||
| tls | ||
| unix | ||
| vmw_vsock | ||
| wimax | ||
| wireless | ||
| x25 | ||
| xdp | ||
| xfrm | ||
| compat.c | ||
| devres.c | ||
| Kconfig | ||
| Makefile | ||
| socket.c | ||
| sysctl_net.c | ||