loop0: detected capacity change from 0 to 1024
EXT4-fs: Ignoring removed bh option
EXT4-fs (loop0): stripe (2) is not aligned with cluster size (16), stripe is disabled
EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.
CIFS: No dialect specified on mount. Default has changed to a more secure dialect, SMB2.1 or later (e.g. SMB3.1.1), from CIFS (SMB1). To use the less secure SMB1 dialect to access old servers which do not support SMB3.1.1 (or even SMB3 or SMB2.1) specify vers=1.0 on mount.
CIFS: Attempting to mount //127.0.0.1/share
CIFS: VFS: \\127.0.0.1 Error -32 sending data on socket to server
------------[ cut here ]------------
server->in_flight == 0
WARNING: fs/smb/client/smb2ops.c:104 at smb2_add_credits+0x1249/0x2b70 fs/smb/client/smb2ops.c:104, CPU#0: syz.0.0/5318
Modules linked in:
CPU: 0 UID: 0 PID: 5318 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:smb2_add_credits+0x1249/0x2b70 fs/smb/client/smb2ops.c:104
Code: de 83 e6 01 31 ff e8 96 22 b7 fe f6 c3 01 75 0a e8 8c 1d b7 fe e9 22 13 00 00 0f 1f 44 00 00 e8 7d 1d b7 fe e9 13 13 00 00 90 <0f> 0b 90 80 3d 84 31 53 0d 01 0f 85 9e 03 00 00 e8 62 1d b7 fe 49
RSP: 0018:ffffc9000dbd7198 EFLAGS: 00010246
RAX: ffffffff8310b7c8 RBX: 1ffff11006ee2861 RCX: ffff888030abcb00
RDX: 0000000000000002 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000002000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: ffffffff8310e520 R12: ffff888037714308
R13: ffffc9000dbd73b0 R14: ffff888037714000 R15: 0000000000000000
FS:  00007fe4850066c0(0000) GS:ffff88808c2c2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe4842c5200 CR3: 000000003efc3000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 add_credits fs/smb/client/cifsglob.h:894 [inline]
 compound_send_recv+0x13b4/0x2b90 fs/smb/client/transport.c:978
 cifs_send_recv+0x42/0x60 fs/smb/client/transport.c:1105
 SMB2_sess_sendreceive+0x22f/0x780 fs/smb/client/smb2pdu.c:1655
 SMB2_sess_auth_rawntlmssp_negotiate+0x308/0xaf0 fs/smb/client/smb2pdu.c:1851
 SMB2_sess_setup+0x475/0x8b0 fs/smb/client/smb2pdu.c:2045
 cifs_setup_session+0x86b/0x1130 fs/smb/client/connect.c:4170
 cifs_get_smb_ses+0x114d/0x1ff0 fs/smb/client/connect.c:2503
 cifs_mount_get_session+0xf1/0x450 fs/smb/client/connect.c:3587
 get_session fs/smb/client/dfs.c:65 [inline]
 dfs_mount_share+0x22e/0x990 fs/smb/client/dfs.c:275
 cifs_mount+0xcc/0xbf0 fs/smb/client/connect.c:3869
 cifs_smb3_do_mount+0x2d0/0x8a0 fs/smb/client/cifsfs.c:1026
 smb3_get_tree_common fs/smb/client/fs_context.c:897 [inline]
 smb3_get_tree+0x2dd/0x400 fs/smb/client/fs_context.c:917
 vfs_get_tree+0x92/0x2a0 fs/super.c:1933
 fc_mount fs/namespace.c:1198 [inline]
 do_new_mount_fc fs/namespace.c:3772 [inline]
 do_new_mount+0x319/0xdc0 fs/namespace.c:3848
 do_mount fs/namespace.c:4181 [inline]
 __do_sys_mount fs/namespace.c:4397 [inline]
 __se_sys_mount+0x31d/0x420 fs/namespace.c:4374
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe48419e159
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:00007fe485005fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fe484425fa0 RCX: 00007fe48419e159
RDX: 0000200000000200 RSI: 0000200000000100 RDI: 0000200000000500
RBP: 00007fe48423506b R08: 0000200000000300 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe484426038 R14: 00007fe484425fa0 R15: 00007ffc88f3c788
 </TASK>