netdevice: dummy0: failed to sync uc/mc addresses
WARNING: net/core/dev_addr_lists.c:1278 at netif_rx_mode_run+0x64d/0xda0 net/core/dev_addr_lists.c:1278, CPU#0: syz.2.2370/18389
Modules linked in:
CPU: 0 UID: 0 PID: 18389 Comm: syz.2.2370 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:netif_rx_mode_run+0x653/0xda0 net/core/dev_addr_lists.c:1278
Code: 25 00 00 00 4c 89 e7 e8 7b f6 20 02 48 85 c0 74 07 49 c7 c5 00 26 f3 8c e8 6a f9 a4 f8 48 8d 3d 73 5c 83 07 4c 89 f2 4c 89 ee <67> 48 0f b9 3a 48 8b 7c 24 30 e8 be 2e 28 02 e9 de fc ff ff e8 44
RSP: 0018:ffffc90002d4f8e0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000064 RCX: ffffffff8963112f
RDX: ffffffff8cf32a20 RSI: ffff888059084120 RDI: ffffffff90e66dd0
RBP: ffffc90002d4faa0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000064 R11: 0000000000000000 R12: ffff888059084120
R13: ffff888059084120 R14: ffffffff8cf32a20 R15: 00000000fffffff4
FS:  0000000000000000(0000) GS:ffff888097174000(0063) knlGS:00000000f53d6b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000080000000 CR3: 000000004da49000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 netif_rx_mode_sync+0x43/0xa0 net/core/dev_addr_lists.c:1428
 dev_ifsioc+0x636/0x1f10 net/core/dev_ioctl.c:596
 dev_ioctl+0x342/0x1070 net/core/dev_ioctl.c:816
 sock_do_ioctl+0x1a0/0x280 net/socket.c:1327
 compat_sock_ioctl_trans net/socket.c:3613 [inline]
 compat_sock_ioctl+0x568/0x760 net/socket.c:3639
 __do_compat_sys_ioctl fs/ioctl.c:695 [inline]
 __se_compat_sys_ioctl fs/ioctl.c:638 [inline]
 __ia32_compat_sys_ioctl+0x2cf/0x360 fs/ioctl.c:638
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0xe7/0x950 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: 0023:0xf7f13fcc
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:00000000f53d650c EFLAGS: 00000292 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000008931
RDX: 0000000080000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess):
   0:	25 00 00 00 4c       	and    $0x4c000000,%eax
   5:	89 e7                	mov    %esp,%edi
   7:	e8 7b f6 20 02       	call   0x220f687
   c:	48 85 c0             	test   %rax,%rax
   f:	74 07                	je     0x18
  11:	49 c7 c5 00 26 f3 8c 	mov    $0xffffffff8cf32600,%r13
  18:	e8 6a f9 a4 f8       	call   0xf8a4f987
  1d:	48 8d 3d 73 5c 83 07 	lea    0x7835c73(%rip),%rdi        # 0x7835c97
  24:	4c 89 f2             	mov    %r14,%rdx
  27:	4c 89 ee             	mov    %r13,%rsi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	48 8b 7c 24 30       	mov    0x30(%rsp),%rdi
  34:	e8 be 2e 28 02       	call   0x2282ef7
  39:	e9 de fc ff ff       	jmp    0xfffffd1c
  3e:	e8                   	.byte 0xe8
  3f:	44                   	rex.R