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| author | Dennis Zhou <dennisz@fb.com> | 2017-06-21 17:51:09 +0200 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2017-06-21 18:00:45 +0200 |
| commit | 11df02bf9bc1f6fd8416d22c08275e31f8c4f30d (patch) | |
| tree | 186cdfac873dbecd6ad4a6d6b5d91d959ac51bfc /mm/percpu.c | |
| parent | percpu_counter: Rename __percpu_counter_add to percpu_counter_add_batch (diff) | |
| download | linux-11df02bf9bc1f6fd8416d22c08275e31f8c4f30d.tar.xz linux-11df02bf9bc1f6fd8416d22c08275e31f8c4f30d.zip | |
percpu: resolve err may not be initialized in pcpu_alloc
From 4a42ecc735cff0015cc73c3d87edede631f4b885 Mon Sep 17 00:00:00 2001
From: Dennis Zhou <dennisz@fb.com>
Date: Wed, 21 Jun 2017 08:07:15 -0700
Add error message to out of space failure for atomic allocations in
percpu allocation path to fix -Wmaybe-uninitialized.
Signed-off-by: Dennis Zhou <dennisz@fb.com>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'mm/percpu.c')
| -rw-r--r-- | mm/percpu.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/mm/percpu.c b/mm/percpu.c index a5bc3634d2a9..bd4130a69bbc 100644 --- a/mm/percpu.c +++ b/mm/percpu.c @@ -956,8 +956,10 @@ restart: * tasks to create chunks simultaneously. Serialize and create iff * there's still no empty chunk after grabbing the mutex. */ - if (is_atomic) + if (is_atomic) { + err = "atomic alloc failed, no space left"; goto fail; + } if (list_empty(&pcpu_slot[pcpu_nr_slots - 1])) { chunk = pcpu_create_chunk(); |