trusted_key: syz.4.779 sent an empty control message without MSG_MORE.
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 2 UID: 0 PID: 8900 Comm: syz.4.779 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:memcpy_sglist+0x3eb/0x760 crypto/scatterwalk.c:177
Code: e8 0a e8 4d fd 4d 85 ff 48 8b 14 24 0f 85 09 02 00 00 48 89 14 24 e8 14 ed 4d fd 48 8b 14 24 48 8d 7a 08 48 89 f8 48 c1 e8 03 <0f> b6 04 18 84 c0 74 08 3c 03 0f 8e 22 03 00 00 48 8d 7a 0c 44 8b
RSP: 0018:ffffc9000cd77950 EFLAGS: 00010202
RAX: 0000000000000001 RBX: dffffc0000000000 RCX: ffffc90030e01000
RDX: 0000000000000000 RSI: ffffffff84ba5bec RDI: 0000000000000008
RBP: ffff888000a820a0 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000002 R11: ffff888026295388 R12: ffff88802b6b5d40
R13: 000000000000000e R14: 00000000000000d2 R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff888097340000(0063) knlGS:00000000f53ddb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000080001000 CR3: 000000004d447000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 _aead_recvmsg crypto/algif_aead.c:186 [inline]
 aead_recvmsg+0x60a/0x1180 crypto/algif_aead.c:240
 sock_recvmsg_nosec net/socket.c:1078 [inline]
 sock_recvmsg+0x1a4/0x1f0 net/socket.c:1100
 ____sys_recvmsg+0x218/0x640 net/socket.c:2812
 ___sys_recvmsg+0x16a/0x1a0 net/socket.c:2854
 __sys_recvmsg+0x16d/0x220 net/socket.c:2887
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0xe3/0x8c0 arch/x86/entry/syscall_32.c:307
 do_fast_syscall_32+0x32/0x70 arch/x86/entry/syscall_32.c:332
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf6feef6c
Code: d2 74 05 c1 e8 0c 89 02 8b 5d fc 31 c0 c9 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 2e 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 58 b8
RSP: 002b:00000000f53dd50c EFLAGS: 00000292 ORIG_RAX: 0000000000000174
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000080000c40
RDX: 0000000040000122 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:memcpy_sglist+0x3eb/0x760 crypto/scatterwalk.c:177
Code: e8 0a e8 4d fd 4d 85 ff 48 8b 14 24 0f 85 09 02 00 00 48 89 14 24 e8 14 ed 4d fd 48 8b 14 24 48 8d 7a 08 48 89 f8 48 c1 e8 03 <0f> b6 04 18 84 c0 74 08 3c 03 0f 8e 22 03 00 00 48 8d 7a 0c 44 8b
RSP: 0018:ffffc9000cd77950 EFLAGS: 00010202
RAX: 0000000000000001 RBX: dffffc0000000000 RCX: ffffc90030e01000
RDX: 0000000000000000 RSI: ffffffff84ba5bec RDI: 0000000000000008
RBP: ffff888000a820a0 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000002 R11: ffff888026295388 R12: ffff88802b6b5d40
R13: 000000000000000e R14: 00000000000000d2 R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff888097340000(0063) knlGS:00000000f53ddb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000080001000 CR3: 000000004d447000 CR4: 0000000000352ef0
----------------
Code disassembly (best guess):
   0:	e8 0a e8 4d fd       	call   0xfd4de80f
   5:	4d 85 ff             	test   %r15,%r15
   8:	48 8b 14 24          	mov    (%rsp),%rdx
   c:	0f 85 09 02 00 00    	jne    0x21b
  12:	48 89 14 24          	mov    %rdx,(%rsp)
  16:	e8 14 ed 4d fd       	call   0xfd4ded2f
  1b:	48 8b 14 24          	mov    (%rsp),%rdx
  1f:	48 8d 7a 08          	lea    0x8(%rdx),%rdi
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	0f b6 04 18          	movzbl (%rax,%rbx,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	74 08                	je     0x3a
  32:	3c 03                	cmp    $0x3,%al
  34:	0f 8e 22 03 00 00    	jle    0x35c
  3a:	48 8d 7a 0c          	lea    0xc(%rdx),%rdi
  3e:	44                   	rex.R
  3f:	8b                   	.byte 0x8b