24641993a7
[ Upstream commit 7e8436728e22181c3f12a5dbabd35ed3a8b8c593 ]
If one of the slot allocate failed, should cleanup all the other
allocated slots, otherwise, the allocated slots will leak:
unreferenced object 0xffff8881115aa100 (size 64):
comm ""mount.nfs"", pid 679, jiffies 4294744957 (age 115.037s)
hex dump (first 32 bytes):
00 cc 19 73 81 88 ff ff 00 a0 5a 11 81 88 ff ff ...s......Z.....
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<000000007a4c434a>] nfs4_find_or_create_slot+0x8e/0x130
[<000000005472a39c>] nfs4_realloc_slot_table+0x23f/0x270
[<00000000cd8ca0eb>] nfs40_init_client+0x4a/0x90
[<00000000128486db>] nfs4_init_client+0xce/0x270
[<000000008d2cacad>] nfs4_set_client+0x1a2/0x2b0
[<000000000e593b52>] nfs4_create_server+0x300/0x5f0
[<00000000e4425dd2>] nfs4_try_get_tree+0x65/0x110
[<00000000d3a6176f>] vfs_get_tree+0x41/0xf0
[<0000000016b5ad4c>] path_mount+0x9b3/0xdd0
[<00000000494cae71>] __x64_sys_mount+0x190/0x1d0
[<000000005d56bdec>] do_syscall_64+0x35/0x80
[<00000000687c9ae4>] entry_SYSCALL_64_after_hwframe+0x46/0xb0
Fixes: abf79bb341bf ("NFS: Add a slot table to struct nfs_client for NFSv4.0 transport blocking")
Signed-off-by: Zhang Xiaoxu <zhangxiaoxu5@huawei.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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.