netlink: 'syz-executor.1': attribute type 1 has an invalid length. general protection fault, probably for non-canonical address 0xdffffc0000000c05: 0000 [#1] PREEMPT SMP KASAN KASAN: probably user-memory-access in range [0x0000000000006028-0x000000000000602f] CPU: 0 PID: 29995 Comm: syz-executor.1 Not tainted 5.7.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:j1939_priv_set net/can/j1939/main.c:145 [inline] RIP: 0010:j1939_netdev_start+0x356/0x640 net/can/j1939/main.c:280 Code: 80 3c 02 00 0f 85 b3 02 00 00 4c 8b a3 a0 05 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d bc 24 28 60 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 7f 02 00 00 49 89 ac 24 28 60 00 00 48 c7 c7 60 RSP: 0018:ffffc9000cd6fd38 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffff8880a8f30000 RCX: ffffc90004b29000 RDX: 0000000000000c05 RSI: ffffffff86ffc220 RDI: 0000000000006028 RBP: ffff888094e7c000 R08: ffff88806d448500 R09: fffff520019adf9a R10: 0000000000000003 R11: fffff520019adf99 R12: 0000000000000000 R13: ffff888094e7d058 R14: ffff8880a8f30568 R15: ffff888094e7c050 FS: 00007fcabae85700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000b90004 CR3: 000000005deb9000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: j1939_sk_bind+0x692/0x990 net/can/j1939/socket.c:469 __sys_bind+0x20e/0x250 net/socket.c:1662 __do_sys_bind net/socket.c:1673 [inline] __se_sys_bind net/socket.c:1671 [inline] __x64_sys_bind+0x6f/0xb0 net/socket.c:1671 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x45c829 Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fcabae84c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000031 RAX: ffffffffffffffda RBX: 00000000004d97e0 RCX: 000000000045c829 RDX: 0000000000000018 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000030 R14: 00000000004c2d0e R15: 00007fcabae856d4 Modules linked in: ---[ end trace b2959aa993a2bc8c ]--- RIP: 0010:j1939_priv_set net/can/j1939/main.c:145 [inline] RIP: 0010:j1939_netdev_start+0x356/0x640 net/can/j1939/main.c:280 Code: 80 3c 02 00 0f 85 b3 02 00 00 4c 8b a3 a0 05 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d bc 24 28 60 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 7f 02 00 00 49 89 ac 24 28 60 00 00 48 c7 c7 60 RSP: 0018:ffffc9000cd6fd38 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffff8880a8f30000 RCX: ffffc90004b29000 RDX: 0000000000000c05 RSI: ffffffff86ffc220 RDI: 0000000000006028 RBP: ffff888094e7c000 R08: ffff88806d448500 R09: fffff520019adf9a R10: 0000000000000003 R11: fffff520019adf99 R12: 0000000000000000 R13: ffff888094e7d058 R14: ffff8880a8f30568 R15: ffff888094e7c050 FS: 00007fcabae85700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000b90004 CR3: 000000005deb9000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400