c533cf50fd
commitff90bdfb20upstream. The c->sup_node is allocated in function ubifs_read_sb_node but is not freed. This will cause memory leak as below: unreferenced object 0xbc9ce000 (size 4096): comm "mount", pid 500, jiffies 4294952946 (age 315.820s) hex dump (first 32 bytes): 31 18 10 06 06 7b f1 11 02 00 00 00 00 00 00 00 1....{.......... 00 10 00 00 06 00 00 00 00 00 00 00 08 00 00 00 ................ backtrace: [<d1c503cd>] ubifs_read_superblock+0x48/0xebc [<a20e14bd>] ubifs_mount+0x974/0x1420 [<8589ecc3>] legacy_get_tree+0x2c/0x50 [<5f1fb889>] vfs_get_tree+0x28/0xfc [<bbfc7939>] do_mount+0x4f8/0x748 [<4151f538>] ksys_mount+0x78/0xa0 [<d59910a9>] ret_fast_syscall+0x0/0x54 [<1cc40005>] 0x7ea02790 Free it in ubifs_umount and in the error path of mount_ubifs. Fixes:fd6150051b("ubifs: Store read superblock node") Signed-off-by: Quanyang Wang <quanyang.wang@windriver.com> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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.