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Subject[PATCH] staging/lustre: use rcu_dereference to access rcu protected current->real_parent field
Date


Signed-off-by: Evgeny Budilovsky <budevg@gmail.com>
---
drivers/staging/lustre/lustre/llite/lproc_llite.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/lustre/lustre/llite/lproc_llite.c b/drivers/staging/lustre/lustre/llite/lproc_llite.c
index 77f68b5..7e61468 100644
--- a/drivers/staging/lustre/lustre/llite/lproc_llite.c
+++ b/drivers/staging/lustre/lustre/llite/lproc_llite.c
@@ -910,7 +910,8 @@ void ll_stats_ops_tally(struct ll_sb_info *sbi, int op, int count)
sbi->ll_stats_track_id == current->pid)
lprocfs_counter_add(sbi->ll_stats, op, count);
else if (sbi->ll_stats_track_type == STATS_TRACK_PPID &&
- sbi->ll_stats_track_id == current->real_parent->pid)
+ sbi->ll_stats_track_id ==
+ rcu_dereference(current->real_parent)->pid)
lprocfs_counter_add(sbi->ll_stats, op, count);
else if (sbi->ll_stats_track_type == STATS_TRACK_GID &&
sbi->ll_stats_track_id ==
--
1.8.1.2


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