device veth0_vlan entered promiscuous mode
device veth1_vlan entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready
IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready
==================================================================
BUG: KASAN: use-after-free in __get_unaligned_cpu32 include/linux/unaligned/packed_struct.h:19 [inline]
BUG: KASAN: use-after-free in mc_hash drivers/net/macvlan.c:255 [inline]
BUG: KASAN: use-after-free in macvlan_broadcast+0x4b9/0x5c0 drivers/net/macvlan.c:281
Read of size 4 at addr ffff88808e0c4ac1 by task syz-executor106/7217

CPU: 0 PID: 7217 Comm: syz-executor106 Not tainted 4.14.162-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x142/0x197 lib/dump_stack.c:58
 print_address_description.cold+0x7c/0x1dc mm/kasan/report.c:252
 kasan_report_error mm/kasan/report.c:351 [inline]
 kasan_report mm/kasan/report.c:409 [inline]
 kasan_report.cold+0xa9/0x2af mm/kasan/report.c:393
 __asan_report_load_n_noabort+0xf/0x20 mm/kasan/report.c:440
 __get_unaligned_cpu32 include/linux/unaligned/packed_struct.h:19 [inline]
 mc_hash drivers/net/macvlan.c:255 [inline]
 macvlan_broadcast+0x4b9/0x5c0 drivers/net/macvlan.c:281
 macvlan_queue_xmit drivers/net/macvlan.c:522 [inline]
 macvlan_start_xmit+0x56b/0x72d drivers/net/macvlan.c:565
 __netdev_start_xmit include/linux/netdevice.h:4038 [inline]
 netdev_start_xmit include/linux/netdevice.h:4047 [inline]
 packet_direct_xmit+0x431/0x640 net/packet/af_packet.c:269
 packet_snd net/packet/af_packet.c:2994 [inline]
 packet_sendmsg+0x1dd4/0x5a60 net/packet/af_packet.c:3019
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xce/0x110 net/socket.c:656
 SYSC_sendto+0x206/0x310 net/socket.c:1763
 SyS_sendto+0x40/0x50 net/socket.c:1731
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x442b99
RSP: 002b:00007ffd9d1761d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000442b99
RDX: 000000000000000e RSI: 0000000020000080 RDI: 0000000000000003
RBP: 00007ffd9d176200 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000403af0 R14: 0000000000000000 R15: 0000000000000000

Allocated by task 4194:
 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59
 save_stack+0x45/0xd0 mm/kasan/kasan.c:447
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_kmalloc mm/kasan/kasan.c:551 [inline]
 kasan_kmalloc+0xce/0xf0 mm/kasan/kasan.c:529
 kasan_slab_alloc+0xf/0x20 mm/kasan/kasan.c:489
 kmem_cache_alloc+0x12e/0x780 mm/slab.c:3552
 dup_mmap kernel/fork.c:647 [inline]
 dup_mm kernel/fork.c:1199 [inline]
 copy_mm kernel/fork.c:1254 [inline]
 copy_process.part.0+0x455d/0x6a70 kernel/fork.c:1771
 copy_process kernel/fork.c:1586 [inline]
 _do_fork+0x19e/0xce0 kernel/fork.c:2070
 SYSC_clone kernel/fork.c:2180 [inline]
 SyS_clone+0x37/0x50 kernel/fork.c:2174
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7

Freed by task 5769:
 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59
 save_stack+0x45/0xd0 mm/kasan/kasan.c:447
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_slab_free+0x75/0xc0 mm/kasan/kasan.c:524
 __cache_free mm/slab.c:3496 [inline]
 kmem_cache_free+0x83/0x2b0 mm/slab.c:3758
 remove_vma+0x161/0x1b0 mm/mmap.c:177
 exit_mmap+0x314/0x4e0 mm/mmap.c:3073
 __mmput kernel/fork.c:930 [inline]
 mmput+0x114/0x440 kernel/fork.c:951
 exec_mmap fs/exec.c:1039 [inline]
 flush_old_exec+0x8c0/0x1b50 fs/exec.c:1271
 load_elf_binary+0x88e/0x4d60 fs/binfmt_elf.c:855
 search_binary_handler fs/exec.c:1638 [inline]
 search_binary_handler+0x149/0x6f0 fs/exec.c:1616
 exec_binprm fs/exec.c:1680 [inline]
 do_execveat_common.isra.0+0x1000/0x1dd0 fs/exec.c:1802
 do_execve fs/exec.c:1847 [inline]
 SYSC_execve fs/exec.c:1928 [inline]
 SyS_execve+0x39/0x50 fs/exec.c:1923
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7

The buggy address belongs to the object at ffff88808e0c4a50
 which belongs to the cache vm_area_struct of size 200
The buggy address is located 113 bytes inside of
 200-byte region [ffff88808e0c4a50, ffff88808e0c4b18)
The buggy address belongs to the page:
page:ffffea0002383100 count:1 mapcount:0 mapping:ffff88808e0c4000 index:0x0
flags: 0xfffe0000000100(slab)
raw: 00fffe0000000100 ffff88808e0c4000 0000000000000000 000000010000000f
raw: ffffea00024559e0 ffffea0002274c20 ffff88821f830c40 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88808e0c4980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88808e0c4a00: fb fb fc fc fc fc fc fc fc fc fb fb fb fb fb fb
>ffff88808e0c4a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                           ^
 ffff88808e0c4b00: fb fb fb fc fc fc fc fc fc fc fc fb fb fb fb fb
 ffff88808e0c4b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================