------------[ cut here ]------------ memcpy: detected field-spanning write (size 28) of single field "&errmsg->msg" at net/netlink/af_netlink.c:2447 (size 16) WARNING: CPU: 2 PID: 3351 at net/netlink/af_netlink.c:2447 netlink_ack+0x8ac/0xb10 net/netlink/af_netlink.c:2447 Modules linked in: CPU: 2 PID: 3351 Comm: dhcpcd Not tainted 6.0.0-syzkaller-00679-g522667b24f08 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:netlink_ack+0x8ac/0xb10 net/netlink/af_netlink.c:2447 Code: fa ff ff e8 e6 bf e5 f9 b9 10 00 00 00 4c 89 ee 48 c7 c2 a0 2b fb 8a 48 c7 c7 00 2c fb 8a c6 05 c6 45 35 06 01 e8 60 74 a6 01 <0f> 0b e9 3a fa ff ff 41 be 00 01 00 00 41 bd 14 00 00 00 e9 ea fd RSP: 0018:ffffc900031f7758 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff88801cc47e80 RCX: 0000000000000000 RDX: ffff888014eb4140 RSI: ffffffff81601e78 RDI: fffff5200063eedd RBP: ffff88801be62300 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000000 R12: 0000000000000000 R13: 000000000000001c R14: ffff88801e32c000 R15: ffff88801e32c014 FS: 00007f8f8b715740(0000) GS:ffff88802ca00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffcbc5ea000 CR3: 000000001f453000 CR4: 0000000000150ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: netlink_rcv_skb+0x33d/0x420 net/netlink/af_netlink.c:2507 genl_rcv+0x24/0x40 net/netlink/genetlink.c:803 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x543/0x7f0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x917/0xe10 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:734 ____sys_sendmsg+0x712/0x8c0 net/socket.c:2482 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2536 __sys_sendmsg+0xf3/0x1c0 net/socket.c:2565 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f8f8b80d163 Code: 64 89 02 48 c7 c0 ff ff ff ff eb b7 66 2e 0f 1f 84 00 00 00 00 00 90 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 89 54 24 1c 48 RSP: 002b:00007ffcbc5e9c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8f8b80d163 RDX: 0000000000000000 RSI: 00007ffcbc5e9cb0 RDI: 0000000000000010 RBP: 00007ffcbc5edef8 R08: 0000000000000000 R09: 0000000000000000 R10: 00007f8f8b88cfc0 R11: 0000000000000246 R12: 0000000000000010 R13: 00007ffcbc5edd10 R14: 0000000000000000 R15: 0000558a3bd0e290