From 66606567dedf395e0857f531976efad4cbbd39ea Mon Sep 17 00:00:00 2001 From: Charles Haithcock Date: Sun, 1 Nov 2020 17:07:56 -0800 Subject: [PATCH] mm, oom: keep oom_adj under or at upper limit when printing For oom_score_adj values in the range [942,999], the current calculations will print 16 for oom_adj. This patch simply limits the output so output is inline with docs. Signed-off-by: Charles Haithcock Signed-off-by: Andrew Morton Acked-by: Michal Hocko Cc: Alexey Dobriyan Link: https://lkml.kernel.org/r/20201020165130.33927-1-chaithco@redhat.com Signed-off-by: Linus Torvalds --- fs/proc/base.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/proc/base.c b/fs/proc/base.c index 0f707003dda5..b362523a9829 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -1049,6 +1049,8 @@ static ssize_t oom_adj_read(struct file *file, char __user *buf, size_t count, oom_adj = (task->signal->oom_score_adj * -OOM_DISABLE) / OOM_SCORE_ADJ_MAX; put_task_struct(task); + if (oom_adj > OOM_ADJUST_MAX) + oom_adj = OOM_ADJUST_MAX; len = snprintf(buffer, sizeof(buffer), "%d\n", oom_adj); return simple_read_from_buffer(buf, count, ppos, buffer, len); }