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[ Upstream commitcf4f4c12de] When `xfs_sysfs_init` returns failed, `mp->m_errortag` needs to free. Otherwise kmemleak would report memory leak after mounting xfs image: unreferenced object 0xffff888101364900 (size 192): comm "mount", pid 13099, jiffies 4294915218 (age 335.207s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<00000000f08ad25c>] __kmalloc+0x41/0x1b0 [<00000000dca9aeb6>] kmem_alloc+0xfd/0x430 [<0000000040361882>] xfs_errortag_init+0x20/0x110 [<00000000b384a0f6>] xfs_mountfs+0x6ea/0x1a30 [<000000003774395d>] xfs_fs_fill_super+0xe10/0x1a80 [<000000009cf07b6c>] get_tree_bdev+0x3e7/0x700 [<00000000046b5426>] vfs_get_tree+0x8e/0x2e0 [<00000000952ec082>] path_mount+0xf8c/0x1990 [<00000000beb1f838>] do_mount+0xee/0x110 [<000000000e9c41bb>] __x64_sys_mount+0x14b/0x1f0 [<00000000f7bb938e>] do_syscall_64+0x3b/0x90 [<000000003fcd67a9>] entry_SYSCALL_64_after_hwframe+0x63/0xcd Fixes:c684010115("xfs: expose errortag knobs via sysfs") Signed-off-by: Zeng Heng <zengheng4@huawei.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com> Acked-by: Chandan Babu R <chandanbabu@kernel.org> 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.