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RTNL: assertion failed at ./include/net/netdev_lock.h (72)
WARNING: ./include/net/netdev_lock.h:72 at netdev_assert_locked_ops_compat include/net/netdev_lock.h:72 [inline], CPU#0: syz.5.1135/10819
WARNING: ./include/net/netdev_lock.h:72 at netdev_queue_get_dma_dev+0x483/0x500 net/core/netdev_queues.c:43, CPU#0: syz.5.1135/10819
Modules linked in:
CPU: 0 UID: 0 PID: 10819 Comm: syz.5.1135 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:netdev_assert_locked_ops_compat include/net/netdev_lock.h:72 [inline]
RIP: 0010:netdev_queue_get_dma_dev+0x48f/0x500 net/core/netdev_queues.c:43
Code: 75 d7 eb dd e8 82 a2 07 f8 90 0f 0b 90 e9 e0 fc ff ff e8 74 a2 07 f8 48 8d 3d 4d 6f a8 06 48 c7 c6 fa 54 2b 8e ba 48 00 00 00 <67> 48 0f b9 3a e9 be fc ff ff 44 89 f9 80 e1 07 38 c1 0f 8c 9b fb
RSP: 0018:ffffc900039af9e0 EFLAGS: 00010283
RAX: ffffffff89bfe28c RBX: ffff888053700000 RCX: 0000000000080000
RDX: 0000000000000048 RSI: ffffffff8e2b54fa RDI: ffffffff906851e0
RBP: 0000000000000000 R08: ffffffff9003cbe7 R09: 1ffffffff200797c
R10: dffffc0000000000 R11: fffffbfff200797d R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f9a7b39c6c0(0000) GS:ffff888124f0c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fefa1f556c8 CR3: 0000000074954000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 zcrx_register_netdev+0x213/0x520 io_uring/zcrx.c:831
 io_register_zcrx+0x953/0xc00 io_uring/zcrx.c:983
 __io_uring_register io_uring/register.c:942 [inline]
 __do_sys_io_uring_register io_uring/register.c:1040 [inline]
 __se_sys_io_uring_register+0xc23/0x1ab0 io_uring/register.c:1017
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x510 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9a7a59e0d9
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:00007f9a7b39c028 EFLAGS: 00000246 ORIG_RAX: 00000000000001ab
RAX: ffffffffffffffda RBX: 00007f9a7a825fa0 RCX: 00007f9a7a59e0d9
RDX: 0000200000000100 RSI: 0000000000000020 RDI: 0000000000000003
RBP: 00007f9a7a635024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9a7a826038 R14: 00007f9a7a825fa0 R15: 00007ffec57ef608
 </TASK>
----------------
Code disassembly (best guess):
   0:	75 d7                	jne    0xffffffd9
   2:	eb dd                	jmp    0xffffffe1
   4:	e8 82 a2 07 f8       	call   0xf807a28b
   9:	90                   	nop
   a:	0f 0b                	ud2
   c:	90                   	nop
   d:	e9 e0 fc ff ff       	jmp    0xfffffcf2
  12:	e8 74 a2 07 f8       	call   0xf807a28b
  17:	48 8d 3d 4d 6f a8 06 	lea    0x6a86f4d(%rip),%rdi        # 0x6a86f6b
  1e:	48 c7 c6 fa 54 2b 8e 	mov    $0xffffffff8e2b54fa,%rsi
  25:	ba 48 00 00 00       	mov    $0x48,%edx
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	e9 be fc ff ff       	jmp    0xfffffcf2
  34:	44 89 f9             	mov    %r15d,%ecx
  37:	80 e1 07             	and    $0x7,%cl
  3a:	38 c1                	cmp    %al,%cl
  3c:	0f                   	.byte 0xf
  3d:	8c                   	.byte 0x8c
  3e:	9b                   	fwait
  3f:	fb                   	sti