input: syz1 as /devices/virtual/input/input7
netlink: 12 bytes leftover after parsing attributes in process `syz.1.382'.
------------[ cut here ]------------
refcount_t: underflow; use-after-free.
WARNING: CPU: 3 PID: 7406 at lib/refcount.c:28 refcount_warn_saturate+0x14a/0x210 lib/refcount.c:28
Modules linked in:
CPU: 3 UID: 0 PID: 7406 Comm: syz.1.382 Not tainted 6.11.0-rc1-syzkaller-00063-g21b136cc63d2 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:refcount_warn_saturate+0x14a/0x210 lib/refcount.c:28
Code: ff 89 de e8 b8 f0 07 fd 84 db 0f 85 66 ff ff ff e8 0b f6 07 fd c6 05 aa 02 79 0b 01 90 48 c7 c7 c0 21 b0 8b e8 a7 3c ca fc 90 <0f> 0b 90 90 e9 43 ff ff ff e8 e8 f5 07 fd 0f b6 1d 85 02 79 0b 31
RSP: 0018:ffffc9000369fd58 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff814cc379
RDX: ffff88804b504880 RSI: ffffffff814cc386 RDI: 0000000000000001
RBP: ffff88804f010080 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 00000000ffffffff
R13: ffff88804f010080 R14: 0000000000000001 R15: 0000000000000100
FS:  00007f17a311e6c0(0000) GS:ffff88806b300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020003008 CR3: 000000004051c000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __refcount_sub_and_test include/linux/refcount.h:275 [inline]
 __refcount_dec_and_test include/linux/refcount.h:307 [inline]
 refcount_dec_and_test include/linux/refcount.h:325 [inline]
 sk_free net/core/sock.c:2260 [inline]
 sock_put include/net/sock.h:1884 [inline]
 sk_common_release+0x2ec/0x420 net/core/sock.c:3773
 inet_create net/ipv4/af_inet.c:396 [inline]
 inet_create+0xc56/0x1070 net/ipv4/af_inet.c:252
 __sock_create+0x32e/0x800 net/socket.c:1571
 sock_create net/socket.c:1622 [inline]
 __sys_socket_create net/socket.c:1659 [inline]
 __sys_socket+0x14f/0x260 net/socket.c:1706
 __do_sys_socket net/socket.c:1720 [inline]
 __se_sys_socket net/socket.c:1718 [inline]
 __x64_sys_socket+0x72/0xb0 net/socket.c:1718
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f17a23773b9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f17a311e048 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00007f17a2505f80 RCX: 00007f17a23773b9
RDX: 0000000000000100 RSI: 0000000000000001 RDI: 0000000000000002
RBP: 00007f17a23e48e6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f17a2505f80 R15: 00007fffb96d2db8
 </TASK>