general protection fault in tipc_crypto_key

general protection fault in tipc_crypto_key_distr
Status: upstream: reported on 2020/12/23 11:13
Reported-by: syzbot+fff41d21ca02315bd004@syzkaller.appspotmail.com
First crash: 119d, last: 68d

Sample crash report:

RBP: 00007fe79facf1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffe1fe0411f R14: 00007fe79facf300 R15: 0000000000022000
general protection fault, probably for non-canonical address 0xdffffc0000000004: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027]
CPU: 1 PID: 12572 Comm: syz-executor.4 Not tainted 5.11.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:tipc_aead_key_size include/uapi/linux/tipc.h:254 [inline]
RIP: 0010:tipc_crypto_key_xmit net/tipc/crypto.c:2245 [inline]
RIP: 0010:tipc_crypto_key_distr+0x218/0xa70 net/tipc/crypto.c:2211
Code: 02 00 0f 85 51 08 00 00 48 8b 45 00 49 8d 4d 20 48 89 ca 48 89 4c 24 10 48 c1 ea 03 48 89 04 24 48 b8 00 00 00 00 00 fc ff df <0f> b6 14 02 48 89 c8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 3d
RSP: 0018:ffffc900177673f0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff888025ca6200 RCX: 0000000000000020
RDX: 0000000000000004 RSI: ffffffff887a3af7 RDI: ffff888025ca6240
RBP: ffff88804cf4ac00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fe79facf700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8f1e944108 CR3: 0000000024661000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __tipc_nl_node_set_key net/tipc/node.c:3008 [inline]
 tipc_nl_node_set_key+0xcb4/0xf30 net/tipc/node.c:3023
 genl_family_rcv_msg_doit+0x228/0x320 net/netlink/genetlink.c:739
 genl_family_rcv_msg net/netlink/genetlink.c:783 [inline]
 genl_rcv_msg+0x328/0x580 net/netlink/genetlink.c:800
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2494
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:811
 netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330
 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1919
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:672
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2345
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2399
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2432
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x465b09
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe79facf188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007fe79facf1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffe1fe0411f R14: 00007fe79facf300 R15: 0000000000022000
Modules linked in:
---[ end trace 9f7ba0869be500a4 ]---
RIP: 0010:tipc_aead_key_size include/uapi/linux/tipc.h:254 [inline]
RIP: 0010:tipc_crypto_key_xmit net/tipc/crypto.c:2245 [inline]
RIP: 0010:tipc_crypto_key_distr+0x218/0xa70 net/tipc/crypto.c:2211
Code: 02 00 0f 85 51 08 00 00 48 8b 45 00 49 8d 4d 20 48 89 ca 48 89 4c 24 10 48 c1 ea 03 48 89 04 24 48 b8 00 00 00 00 00 fc ff df <0f> b6 14 02 48 89 c8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 3d
RSP: 0018:ffffc900177673f0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff888025ca6200 RCX: 0000000000000020
RDX: 0000000000000004 RSI: ffffffff887a3af7 RDI: ffff888025ca6240
RBP: ffff88804cf4ac00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fe79facf700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d421000 CR3: 0000000024661000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (2):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Title
ci-upstream-net-this-kasan-gce	2021/02/06 01:23	net	b3d2c7b8	23a562df	.config	log	report			info	general protection fault in tipc_crypto_key_distr
ci-upstream-net-kasan-gce	2020/12/17 04:39	net-next	3db1a3fa	04201c06	.config	log	report			info