trusted_key: syz.3.185 sent an empty control message without MSG_MORE. Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 1 UID: 0 PID: 6490 Comm: syz.3.185 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:memcpy_sglist+0x420/0x730 crypto/scatterwalk.c:177 Code: e8 f5 a4 61 fd f6 c3 01 0f 85 0a 01 00 00 e8 87 9f 61 fd 4c 89 f3 eb 07 e8 7d 9f 61 fd 31 db 4c 8d 7b 08 4c 89 f8 48 c1 e8 03 <0f> b6 04 28 84 c0 0f 85 1d 02 00 00 41 8b 07 89 44 24 04 49 8d 7d RSP: 0018:ffffc90007717698 EFLAGS: 00010202 RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000080000 RDX: ffffc9000ec82000 RSI: 00000000000001cd RDI: 00000000000001ce RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000 R10: a8df8408b91424bd R11: d264fe78af204976 R12: 000000000000000a R13: ffff888024e7a9c0 R14: ffff888033380880 R15: 0000000000000008 FS: 00007fe68e8366c0(0000) GS:ffff888126435000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c2d7dca CR3: 0000000035abe000 CR4: 00000000003526f0 Call Trace: _aead_recvmsg crypto/algif_aead.c:186 [inline] aead_recvmsg+0x719/0x1030 crypto/algif_aead.c:240 sock_recvmsg_nosec+0x10c/0x140 net/socket.c:1078 ____sys_recvmsg+0x3ef/0x4b0 net/socket.c:2810 ___sys_recvmsg+0x215/0x590 net/socket.c:2854 do_recvmmsg+0x33a/0x800 net/socket.c:2949 __sys_recvmmsg net/socket.c:3023 [inline] __do_sys_recvmmsg net/socket.c:3046 [inline] __se_sys_recvmmsg net/socket.c:3039 [inline] __x64_sys_recvmmsg+0x198/0x250 net/socket.c:3039 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe6905dc819 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe68e836028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007fe690855fa0 RCX: 00007fe6905dc819 RDX: 0000000000000002 RSI: 0000200000000180 RDI: 0000000000000004 RBP: 00007fe690672c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000010 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fe690856038 R14: 00007fe690855fa0 R15: 00007ffcfcede218 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:memcpy_sglist+0x420/0x730 crypto/scatterwalk.c:177 Code: e8 f5 a4 61 fd f6 c3 01 0f 85 0a 01 00 00 e8 87 9f 61 fd 4c 89 f3 eb 07 e8 7d 9f 61 fd 31 db 4c 8d 7b 08 4c 89 f8 48 c1 e8 03 <0f> b6 04 28 84 c0 0f 85 1d 02 00 00 41 8b 07 89 44 24 04 49 8d 7d RSP: 0018:ffffc90007717698 EFLAGS: 00010202 RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000080000 RDX: ffffc9000ec82000 RSI: 00000000000001cd RDI: 00000000000001ce RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000 R10: a8df8408b91424bd R11: d264fe78af204976 R12: 000000000000000a R13: ffff888024e7a9c0 R14: ffff888033380880 R15: 0000000000000008 FS: 00007fe68e8366c0(0000) GS:ffff888126435000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c2d7dca CR3: 0000000035abe000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: e8 f5 a4 61 fd call 0xfd61a4fa 5: f6 c3 01 test $0x1,%bl 8: 0f 85 0a 01 00 00 jne 0x118 e: e8 87 9f 61 fd call 0xfd619f9a 13: 4c 89 f3 mov %r14,%rbx 16: eb 07 jmp 0x1f 18: e8 7d 9f 61 fd call 0xfd619f9a 1d: 31 db xor %ebx,%ebx 1f: 4c 8d 7b 08 lea 0x8(%rbx),%r15 23: 4c 89 f8 mov %r15,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 0f b6 04 28 movzbl (%rax,%rbp,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 0f 85 1d 02 00 00 jne 0x253 36: 41 8b 07 mov (%r15),%eax 39: 89 44 24 04 mov %eax,0x4(%rsp) 3d: 49 rex.WB 3e: 8d .byte 0x8d 3f: 7d .byte 0x7d