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30b2d7f8f1
There is a memory leak when mount cifs:
unreferenced object 0xffff888166059600 (size 448):
comm "mount.cifs", pid 51391, jiffies 4295596373 (age 330.596s)
hex dump (first 32 bytes):
fe 53 4d 42 40 00 00 00 00 00 00 00 01 00 82 00 .SMB@...........
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<0000000060609a61>] mempool_alloc+0xe1/0x260
[<00000000adfa6c63>] cifs_small_buf_get+0x24/0x60
[<00000000ebb404c7>] __smb2_plain_req_init+0x32/0x460
[<00000000bcf875b4>] SMB2_sess_alloc_buffer+0xa4/0x3f0
[<00000000753a2987>] SMB2_sess_auth_rawntlmssp_negotiate+0xf5/0x480
[<00000000f0c1f4f9>] SMB2_sess_setup+0x253/0x410
[<00000000a8b83303>] cifs_setup_session+0x18f/0x4c0
[<00000000854bd16d>] cifs_get_smb_ses+0xae7/0x13c0
[<000000006cbc43d9>] mount_get_conns+0x7a/0x730
[<000000005922d816>] cifs_mount+0x103/0xd10
[<00000000e33def3b>] cifs_smb3_do_mount+0x1dd/0xc90
[<0000000078034979>] smb3_get_tree+0x1d5/0x300
[<000000004371f980>] vfs_get_tree+0x41/0xf0
[<00000000b670d8a7>] path_mount+0x9b3/0xdd0
[<000000005e839a7d>] __x64_sys_mount+0x190/0x1d0
[<000000009404c3b9>] do_syscall_64+0x35/0x80
When build ntlmssp negotiate blob failed, the session setup request
should be freed.
Fixes: 49bd49f983 ("cifs: send workstation name during ntlmssp session setup")
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Zhang Xiaoxu <zhangxiaoxu5@huawei.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.