======================================
| [   15.438745][  T241] ==================================================================
| [   15.438935][  T241] BUG: KASAN: slab-use-after-free in macvlan_fill_info (drivers/net/macvlan.c:1740 (discriminator 2)) macvlan
| [   15.439147][  T241] Read of size 4 at addr ff110000138328b8 by task (udev-worker)/241
| [   15.439338][  T241]
[   15.439409][  T241] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.439412][  T241] Call Trace:
[   15.439415][  T241]  <TASK>
[   15.439416][  T241]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   15.439426][  T241]  print_address_description.constprop.0 (mm/kasan/report.c:378)
[   15.439433][  T241]  print_report (mm/kasan/report.c:482)
[   15.439436][  T241]  ? __virt_addr_valid (./include/linux/rcupdate.h:937 ./include/linux/mmzone.h:2281 arch/x86/mm/physaddr.c:54)
[   15.439441][  T241]  ? __virt_addr_valid (./include/linux/rcupdate.h:963 (discriminator 1) ./include/linux/mmzone.h:2291 (discriminator 1) arch/x86/mm/physaddr.c:54 (discriminator 1))
[   15.439445][  T241]  kasan_report (mm/kasan/report.c:595)
[   15.439449][  T241]  ? macvlan_fill_info (drivers/net/macvlan.c:1740 (discriminator 2)) macvlan
[   15.439454][  T241]  ? macvlan_fill_info (drivers/net/macvlan.c:1740 (discriminator 2)) macvlan
[   15.439458][  T241] macvlan_fill_info (drivers/net/macvlan.c:1740 (discriminator 2)) macvlan
[   15.439462][  T241]  ? __asan_memcpy (mm/kasan/shadow.c:106 (discriminator 1))
[   15.439466][  T241]  ? macvlan_port_create (drivers/net/macvlan.c:1265) macvlan
[   15.439470][  T241]  ? rtnl_xdp_fill (./include/net/netlink.h:1394 net/core/rtnetlink.c:1793)
[   15.439475][  T241]  ? __asan_memcpy (mm/kasan/shadow.c:106 (discriminator 1))
[   15.439478][  T241]  rtnl_link_fill (net/core/rtnetlink.c:905 net/core/rtnetlink.c:926)
[   15.439482][  T241]  rtnl_fill_ifinfo.isra.0 (net/core/rtnetlink.c:2185)
[   15.439487][  T241]  ? rtnl_fill_vf (./include/linux/skbuff.h:2720)
[   15.439490][  T241]  ? trace_kmalloc (./include/trace/events/kmem.h:57 (discriminator 22))
[   15.439495][  T241]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   15.439499][  T241]  ? __kmalloc_node_track_caller_noprof (mm/slub.c:5297 mm/slub.c:5408)
[   15.439505][  T241]  ? __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:695 (discriminator 2))
[   15.439509][  T241]  ? napi_skb_cache_get (./include/linux/local_lock_internal.h:61)
[   15.439513][  T241]  rtnl_getlink (net/core/rtnetlink.c:4280)
[   15.439518][  T241]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   15.439521][  T241]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   15.439525][  T241]  ? rtnl_dump_ifinfo (./include/net/netlink.h:1236)
[   15.439528][  T241]  ? mark_usage (kernel/locking/lockdep.c:4674)
[   15.439530][  T241]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   15.439532][  T241]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   15.439545][  T241]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   15.439548][  T241]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   15.439551][  T241]  ? mark_usage (kernel/locking/lockdep.c:4674)
[   15.439553][  T241]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   15.439555][  T241]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   15.439558][  T241]  ? is_bpf_text_address (./include/linux/rcupdate.h:300 (discriminator 2) ./include/linux/rcupdate.h:838 (discriminator 2) kernel/bpf/core.c:747 (discriminator 2))
[   15.439563][  T241]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   15.439566][  T241]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   15.439569][  T241]  ? rtnl_dump_ifinfo (./include/net/netlink.h:1236)
[   15.439571][  T241]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[   15.439575][  T241]  ? rtnl_dump_ifinfo (./include/net/netlink.h:1236)
[   15.439578][  T241]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7062)
[   15.439581][  T241]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 2) kernel/locking/lockdep.c:3821 (discriminator 2) kernel/locking/lockdep.c:3876 (discriminator 2))
[   15.439583][  T241]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   15.439586][  T241]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   15.439589][  T241]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[   15.439592][  T241]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   15.439595][  T241]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   15.439602][  T241]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   15.439605][  T241]  ? netlink_ack (./include/linux/skbuff.h:2720)
[   15.439610][  T241]  ? netlink_deliver_tap (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   15.439612][  T241]  ? netlink_deliver_tap (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   15.439616][  T241]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   15.439619][  T241]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   15.439622][  T241]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   15.439625][  T241]  ? sched_numa_find_closest (kernel/sched/topology.c:2257)
[   15.439629][  T241]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   15.439633][  T241]  ? netlink_unicast (./include/net/net_namespace.h:419 (discriminator 7))
[   15.439636][  T241]  ? __might_fault (mm/memory.c:7340 (discriminator 5))
[   15.439640][  T241]  ? __might_fault (mm/memory.c:7340 (discriminator 5))
[   15.439643][  T241]  __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[   15.439648][  T241]  ? __ia32_sys_getpeername (net/socket.c:2219)
[   15.439652][  T241]  ? __pmd_alloc (./include/linux/mm.h:1682)
[   15.439660][  T241]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[   15.439666][  T241]  __x64_sys_sendto (net/socket.c:2272 net/socket.c:2268 net/socket.c:2268)
[   15.439669][  T241]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   15.439674][  T241]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   15.439676][  T241]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[   15.439679][  T241]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   15.439681][  T241]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[   15.439684][  T241]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   15.439687][  T241]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   15.439691][  T241] RIP: 0033:0x7fd5d4ee608e
[   15.439695][  T241] Code: 4d 89 d8 e8 94 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 94 bd 00 00       	call   0xbd9c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   15.439698][  T241] RSP: 002b:00007ffdd4474270 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   15.439703][  T241] RAX: ffffffffffffffda RBX: 0000556954a434d0 RCX: 00007fd5d4ee608e
[   15.439705][  T241] RDX: 0000000000000020 RSI: 0000556954a46060 RDI: 0000000000000012
[   15.439707][  T241] RBP: 00007ffdd4474280 R08: 00007ffdd44742d0 R09: 0000000000000080
[   15.439708][  T241] R10: 0000000000000000 R11: 0000000000000202 R12: 0000556954bc0fb0


Finger prints:
print_report:kasan_report:macvlan_fill_info:rtnl_link_fill:rtnl_getlink