WARNING: CPU: 0 PID: 8434 at lib/refcount.c:25 refcount_warn_saturate+0x169/0x1e0 lib/refcount.c:25 Modules linked in: CPU: 1 PID: 8434 Comm: syz-executor.0 Not tainted 5.12.0-rc6-next-20210409-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:refcount_warn_saturate+0x169/0x1e0 lib/refcount.c:25 Code: 09 31 ff 89 de e8 27 6f a6 fd 84 db 0f 85 36 ff ff ff e8 6a 68 a6 fd 48 c7 c7 c0 5a c2 89 c6 05 ec bb e5 09 01 e8 94 b2 00 05 <0f> 0b e9 17 ff ff ff e8 4b 68 a6 fd 0f b6 1d d1 bb e5 09 31 ff 89 RSP: 0018:ffffc90001a27d68 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff8880254ed580 RSI: ffffffff815c3165 RDI: fffff52000344f9f RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815bcfae R11: 0000000000000000 R12: ffff88802841a340 R13: ffff88807875814c R14: 0000000000000002 R15: 0000000000000001 FS: 0000000003069400(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32f24000 CR3: 0000000069afc000 CR4: 00000000001526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __refcount_add include/linux/refcount.h:199 [inline] __refcount_inc include/linux/refcount.h:250 [inline] refcount_inc include/linux/refcount.h:267 [inline] get_net include/net/net_namespace.h:231 [inline] sk_alloc+0xb19/0xbc0 net/core/sock.c:1768 inet_create net/ipv4/af_inet.c:322 [inline] inet_create+0x395/0xea0 net/ipv4/af_inet.c:248 __sock_create+0x353/0x790 net/socket.c:1408 sock_create net/socket.c:1459 [inline] __sys_socket+0xef/0x200 net/socket.c:1501 __do_sys_socket net/socket.c:1510 [inline] __se_sys_socket net/socket.c:1508 [inline] __x64_sys_socket+0x6f/0xb0 net/socket.c:1508 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x467ac7 Code: f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 29 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc2bdb6ed8 EFLAGS: 00000202 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007ffc2bdb7650 RCX: 0000000000467ac7 RDX: 0000000000000006 RSI: 0000000000000001 RDI: 0000000000000002 RBP: 0000000000000003 R08: 0000000000000000 R09: 00007ffc2bdb7450 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000032 R13: 000000000005be80 R14: 0000000000000000 R15: 00007ffc2bdb7690