From: NeilBrown <neilb@suse.de>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-kernel@vger.kernel.org, Peng Tao <tao.peng@emc.com>,
Andreas Dilger <andreas.dilger@intel.com>
Subject: [PATCH] stating/lustre: fix misuse of current->parent.
Date: Fri, 18 Jul 2014 15:39:19 +1000 [thread overview]
Message-ID: <20140718153919.58e0164d@notabene.brown> (raw)
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current->parent is used by ptrace to redirect some signal delivery
to the ptracer. It should only be used by 'ptrace' or 'signal' code.
All other users should use current->real_parent, which is the real
parent.
Signed-off-by: NeilBrown <neilb@suse.de>
diff --git a/drivers/staging/lustre/lustre/llite/lproc_llite.c b/drivers/staging/lustre/lustre/llite/lproc_llite.c
index 77ee9e58cf87..5c5d2d6470f1 100644
--- a/drivers/staging/lustre/lustre/llite/lproc_llite.c
+++ b/drivers/staging/lustre/lustre/llite/lproc_llite.c
@@ -909,7 +909,7 @@ 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->parent->pid)
+ sbi->ll_stats_track_id == 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 ==
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reply other threads:[~2014-07-18 5:39 UTC|newest]
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