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eeca958dce
The ceph_inode_xattr needs to be released when removing an xattr. Easily
reproducible running the 'generic/020' test from xfstests or simply by
doing:
attr -s attr0 -V 0 /mnt/test && attr -r attr0 /mnt/test
While there, also fix the error path.
Here's the kmemleak splat:
unreferenced object 0xffff88001f86fbc0 (size 64):
comm "attr", pid 244, jiffies 4294904246 (age 98.464s)
hex dump (first 32 bytes):
40 fa 86 1f 00 88 ff ff 80 32 38 1f 00 88 ff ff @........28.....
00 01 00 00 00 00 ad de 00 02 00 00 00 00 ad de ................
backtrace:
[<ffffffff81560199>] kmemleak_alloc+0x49/0xa0
[<ffffffff810f3e5b>] kmem_cache_alloc+0x9b/0xf0
[<ffffffff812b157e>] __ceph_setxattr+0x17e/0x820
[<ffffffff812b1c57>] ceph_set_xattr_handler+0x37/0x40
[<ffffffff8111fb4b>] __vfs_removexattr+0x4b/0x60
[<ffffffff8111fd37>] vfs_removexattr+0x77/0xd0
[<ffffffff8111fdd1>] removexattr+0x41/0x60
[<ffffffff8111fe65>] path_removexattr+0x75/0xa0
[<ffffffff81120aeb>] SyS_lremovexattr+0xb/0x10
[<ffffffff81564b20>] entry_SYSCALL_64_fastpath+0x13/0x94
[<ffffffffffffffff>] 0xffffffffffffffff
Cc: stable@vger.kernel.org
Signed-off-by: Luis Henriques <lhenriques@suse.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.