CIFS: Attempting to mount //127.0.0.1/share
CIFS: VFS: \\127.0.0.1 Error -512 sending data on socket to server
------------[ cut here ]------------
WARNING: CPU: 0 PID: 10721 at fs/smb/client/smb2ops.c:97 smb2_add_credits+0x1365/0x2600 fs/smb/client/smb2ops.c:97
Modules linked in:
CPU: 0 PID: 10721 Comm: syz.4.1199 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:smb2_add_credits+0x1365/0x2600 fs/smb/client/smb2ops.c:97
Code: 03 42 80 3c 28 00 74 08 4c 89 e7 e8 b5 b1 3c ff 49 8b 34 24 48 c7 c7 a0 21 f7 8a e8 35 f1 e0 07 e9 eb f9 ff ff e8 1b 30 e4 fe <0f> 0b e9 d9 ef ff ff e8 0f 30 e4 fe c6 05 5e be d3 0b 01 48 c7 c7
RSP: 0018:ffffc900102a7400 EFLAGS: 00010283
RAX: ffffffff82a35255 RBX: ffff888030dd22c0 RCX: 0000000000080000
RDX: ffffc9001862c000 RSI: 0000000000064d9c RDI: 0000000000064d9d
RBP: 0000000000000200 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52002054e70 R12: 1ffff110061ba458
R13: dffffc0000000000 R14: ffff888030dd2000 R15: 0000000000000000
FS:  00007f1087ff66c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556f1ed9f8 CR3: 00000000698c9000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 add_credits fs/smb/client/cifsglob.h:857 [inline]
 compound_send_recv+0x1254/0x3040 fs/smb/client/transport.c:1193
 cifs_send_recv+0x40/0x50 fs/smb/client/transport.c:1317
 SMB2_negotiate+0x16b5/0x4270 fs/smb/client/smb2pdu.c:1144
 cifs_negotiate_protocol+0x445/0x670 fs/smb/client/connect.c:4008
 cifs_get_smb_ses+0x8d6/0x1b00 fs/smb/client/connect.c:2434
 cifs_mount_get_session+0xef/0x440 fs/smb/client/connect.c:3472
 get_session fs/smb/client/dfs.c:62 [inline]
 dfs_mount_share+0x1e9/0x7b0 fs/smb/client/dfs.c:285
 cifs_mount+0xbc/0x650 fs/smb/client/connect.c:3720
 cifs_smb3_do_mount+0x2e5/0x710 fs/smb/client/cifsfs.c:950
 smb3_get_tree_common fs/smb/client/fs_context.c:785 [inline]
 smb3_get_tree+0x5a5/0xa90 fs/smb/client/fs_context.c:805
 vfs_get_tree+0x8c/0x280 fs/super.c:1772
 do_new_mount+0x24a/0xa40 fs/namespace.c:3386
 do_mount fs/namespace.c:3726 [inline]
 __do_sys_mount fs/namespace.c:3935 [inline]
 __se_sys_mount+0x2e7/0x3d0 fs/namespace.c:3912
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f1089d9e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1087ff6028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f108a025fa0 RCX: 00007f1089d9e159
RDX: 0000200000000200 RSI: 0000200000000100 RDI: 0000200000000500
RBP: 00007f1089e35024 R08: 0000200000000300 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f108a026038 R14: 00007f108a025fa0 R15: 00007fff497ec238
 </TASK>