On Tue, 4 Oct 2022 at 10:27, syzbot <syzbot+3a080099974c271cd7e9@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > > Hello, > > syzbot found the following issue on: > > HEAD commit: 725737e7c21d Merge tag 'statx-dioalign-for-linus' of git:/.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=10257034880000 > kernel config: https://syzkaller.appspot.com/x/.config?x=486af5e221f55835 > dashboard link: https://syzkaller.appspot.com/bug?extid=3a080099974c271cd7e9 > compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+3a080099974c271cd7e9@xxxxxxxxxxxxxxxxxxxxxxxxx +linux-hardening > ------------[ 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: 3 PID: 3351 at net/netlink/af_netlink.c:2447 netlink_ack+0x8ac/0xb10 net/netlink/af_netlink.c:2447 > Modules linked in: > CPU: 3 PID: 3351 Comm: dhcpcd Not tainted 6.0.0-syzkaller-00593-g725737e7c21d #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 36 c3 e5 f9 b9 10 00 00 00 4c 89 ee 48 c7 c2 20 3f fb 8a 48 c7 c7 80 3f fb 8a c6 05 e8 98 34 06 01 e8 26 77 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:ffffc900220e7758 EFLAGS: 00010282 > RAX: 0000000000000000 RBX: ffff88801a798a80 RCX: 0000000000000000 > RDX: ffff8880151c0180 RSI: ffffffff81611cb8 RDI: fffff5200441cedd > RBP: ffff88801ed850c0 R08: 0000000000000005 R09: 0000000000000000 > R10: 0000000080000000 R11: 0000000000000000 R12: 0000000000000000 > R13: 000000000000001c R14: ffff88801ec8e400 R15: ffff88801ec8e414 > FS: 00007faef0af8740(0000) GS:ffff88802cb00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 00007fff6adbe000 CR3: 0000000027683000 CR4: 0000000000150ee0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > <TASK> > 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: 0033:0x7faef0bf0163 > 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:00007fff6adbdc48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e > RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007faef0bf0163 > RDX: 0000000000000000 RSI: 00007fff6adbdc90 RDI: 0000000000000010 > RBP: 00007fff6adc1ed8 R08: 0000000000000000 R09: 0000000000000000 > R10: 00007faef0c6ffc0 R11: 0000000000000246 R12: 0000000000000010 > R13: 00007fff6adc1cf0 R14: 0000000000000000 R15: 000055e5ebce0290 > </TASK> > > > --- > This report is generated by a bot. It may contain errors. > See https://goo.gl/tpsmEJ for more information about syzbot. > syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. > > syzbot will keep track of this issue. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot. > > -- > You received this message because you are subscribed to the Google Groups "syzkaller-bugs" group. > To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller-bugs+unsubscribe@xxxxxxxxxxxxxxxx. > To view this discussion on the web visit https://groups.google.com/d/msgid/syzkaller-bugs/000000000000a793cc05ea313b87%40google.com.
