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| author | Kees Cook <keescook@chromium.org> | 2020-06-03 23:09:38 +0300 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2020-07-16 22:35:15 +0300 |
| commit | 3f649ab728cda8038259d8f14492fe400fbab911 (patch) | |
| tree | d1552706b153fa98d4c9e99eb2d64913fda5e014 /net/sched/sch_sfq.c | |
| parent | d8b44b58a7073b4d74b3394131eb449e8469396b (diff) | |
| download | linux-3f649ab728cda8038259d8f14492fe400fbab911.tar.xz | |
treewide: Remove uninitialized_var() usage
Using uninitialized_var() is dangerous as it papers over real bugs[1]
(or can in the future), and suppresses unrelated compiler warnings
(e.g. "unused variable"). If the compiler thinks it is uninitialized,
either simply initialize the variable or make compiler changes.
In preparation for removing[2] the[3] macro[4], remove all remaining
needless uses with the following script:
git grep '\buninitialized_var\b' | cut -d: -f1 | sort -u | \
xargs perl -pi -e \
's/\buninitialized_var\(([^\)]+)\)/\1/g;
s:\s*/\* (GCC be quiet|to make compiler happy) \*/$::g;'
drivers/video/fbdev/riva/riva_hw.c was manually tweaked to avoid
pathological white-space.
No outstanding warnings were found building allmodconfig with GCC 9.3.0
for x86_64, i386, arm64, arm, powerpc, powerpc64le, s390x, mips, sparc64,
alpha, and m68k.
[1] https://lore.kernel.org/lkml/20200603174714.192027-1-glider@google.com/
[2] https://lore.kernel.org/lkml/CA+55aFw+Vbj0i=1TGqCR5vQkCzWJ0QxK6CernOU6eedsudAixw@mail.gmail.com/
[3] https://lore.kernel.org/lkml/CA+55aFwgbgqhbp1fkxvRKEpzyR5J8n1vKT1VZdz9knmPuXhOeg@mail.gmail.com/
[4] https://lore.kernel.org/lkml/CA+55aFz2500WfbKXAx8s67wrm9=yVJu65TpLgN_ybYNv0VEOKA@mail.gmail.com/
Reviewed-by: Leon Romanovsky <leonro@mellanox.com> # drivers/infiniband and mlx4/mlx5
Acked-by: Jason Gunthorpe <jgg@mellanox.com> # IB
Acked-by: Kalle Valo <kvalo@codeaurora.org> # wireless drivers
Reviewed-by: Chao Yu <yuchao0@huawei.com> # erofs
Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'net/sched/sch_sfq.c')
| -rw-r--r-- | net/sched/sch_sfq.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c index 5a6def5e4e6d..15f400dcb400 100644 --- a/net/sched/sch_sfq.c +++ b/net/sched/sch_sfq.c @@ -349,7 +349,7 @@ sfq_enqueue(struct sk_buff *skb, struct Qdisc *sch, struct sk_buff **to_free) unsigned int hash, dropped; sfq_index x, qlen; struct sfq_slot *slot; - int uninitialized_var(ret); + int ret; struct sk_buff *head; int delta; |