netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'.
general protection fault, probably for non-canonical address 0xdffffc0000000009: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000048-0x000000000000004f]
CPU: 0 PID: 12893 Comm: syz-executor.1 Not tainted 6.7.0-rc8-next-20240105-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:qdisc_block_add_dev net/sched/sch_api.c:1219 [inline]
RIP: 0010:qdisc_create+0x6a8/0x1440 net/sched/sch_api.c:1419
Code: ea 03 80 3c 02 00 0f 85 57 0c 00 00 4c 8b 6d 08 49 8d 45 48 48 89 c2 48 89 44 24 18 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 16 0c 00 00 31 d2 be f2 ff 00 00 48 89 df 41 ff
RSP: 0018:ffffc900034ef410 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff8880214ea000 RCX: ffffc90005b6a000
RDX: 0000000000000009 RSI: ffffffff889a4b28 RDI: ffffffff8f3b8688
RBP: ffffffff8f3b8680 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: ffffffff8a8f07c0 R12: ffff88801c5a8000
R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8f3b8680
FS:  00007f05a90026c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3172f000 CR3: 000000002cc85000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 tc_modify_qdisc+0x4d5/0x1c30 net/sched/sch_api.c:1817
 rtnetlink_rcv_msg+0x3c7/0xe00 net/core/rtnetlink.c:6615
 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2543
 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]
 netlink_unicast+0x53b/0x810 net/netlink/af_netlink.c:1367
 netlink_sendmsg+0x8b4/0xd70 net/netlink/af_netlink.c:1908
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0xd5/0x180 net/socket.c:745
 ____sys_sendmsg+0x6ac/0x940 net/socket.c:2584
 ___sys_sendmsg+0x135/0x1d0 net/socket.c:2638
 __sys_sendmsg+0x117/0x1e0 net/socket.c:2667
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xd0/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x62/0x6a
RIP: 0033:0x7f05a827cd29
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 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 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f05a90020c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f05a83abf80 RCX: 00007f05a827cd29
RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000003
RBP: 00007f05a82c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f05a83abf80 R15: 00007ffd6844dd78
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:qdisc_block_add_dev net/sched/sch_api.c:1219 [inline]
RIP: 0010:qdisc_create+0x6a8/0x1440 net/sched/sch_api.c:1419
Code: ea 03 80 3c 02 00 0f 85 57 0c 00 00 4c 8b 6d 08 49 8d 45 48 48 89 c2 48 89 44 24 18 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 16 0c 00 00 31 d2 be f2 ff 00 00 48 89 df 41 ff
RSP: 0018:ffffc900034ef410 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff8880214ea000 RCX: ffffc90005b6a000
RDX: 0000000000000009 RSI: ffffffff889a4b28 RDI: ffffffff8f3b8688
RBP: ffffffff8f3b8680 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: ffffffff8a8f07c0 R12: ffff88801c5a8000
R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8f3b8680
FS:  00007f05a90026c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31021000 CR3: 000000002cc85000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	03 80 3c 02 00 0f    	add    0xf00023c(%rax),%eax
   6:	85 57 0c             	test   %edx,0xc(%rdi)
   9:	00 00                	add    %al,(%rax)
   b:	4c 8b 6d 08          	mov    0x8(%rbp),%r13
   f:	49 8d 45 48          	lea    0x48(%r13),%rax
  13:	48 89 c2             	mov    %rax,%rdx
  16:	48 89 44 24 18       	mov    %rax,0x18(%rsp)
  1b:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  22:	fc ff df
  25:	48 c1 ea 03          	shr    $0x3,%rdx
* 29:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2d:	0f 85 16 0c 00 00    	jne    0xc49
  33:	31 d2                	xor    %edx,%edx
  35:	be f2 ff 00 00       	mov    $0xfff2,%esi
  3a:	48 89 df             	mov    %rbx,%rdi
  3d:	41                   	rex.B
  3e:	ff                   	.byte 0xff