4.9-stable review patch. If anyone has any objections, please let me know.
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From: James Simmons jsimmons@infradead.org
[ Upstream commit 1b60f6dfa38403ff7c4d0b4b7ecdb810f9789a2a ]
In ll_xattr_set_common() detect the removexattr() case correctly by testing for a NULL value as well as XATTR_REPLACE.
Signed-off-by: John L. Hammond john.hammond@intel.com Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-10787 Reviewed-on: https://review.whamcloud.com/ Reviewed-by: Dmitry Eremin dmitry.eremin@intel.com Reviewed-by: James Simmons uja.ornl@yahoo.com Signed-off-by: James Simmons jsimmons@infradead.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/staging/lustre/lustre/llite/xattr.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/staging/lustre/lustre/llite/xattr.c +++ b/drivers/staging/lustre/lustre/llite/xattr.c @@ -103,7 +103,11 @@ ll_xattr_set_common(const struct xattr_h __u64 valid; int rc;
- if (flags == XATTR_REPLACE) { + /* When setxattr() is called with a size of 0 the value is + * unconditionally replaced by "". When removexattr() is + * called we get a NULL value and XATTR_REPLACE for flags. + */ + if (!value && flags == XATTR_REPLACE) { ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_REMOVEXATTR, 1); valid = OBD_MD_FLXATTRRM; } else {