From 7c4a6309e27f411743817fe74a832ec2d2798a4b Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Mon, 12 Dec 2022 19:20:37 -0800 Subject: [PATCH] ipvs: fix type warning in do_div() on 32 bit 32 bit platforms without 64bit div generate the following warning: net/netfilter/ipvs/ip_vs_est.c: In function 'ip_vs_est_calc_limits': include/asm-generic/div64.h:222:35: warning: comparison of distinct pointer types lacks a cast 222 | (void)(((typeof((n)) *)0) == ((uint64_t *)0)); \ | ^~ net/netfilter/ipvs/ip_vs_est.c:694:17: note: in expansion of macro 'do_div' 694 | do_div(val, loops); | ^~~~~~ include/asm-generic/div64.h:222:35: warning: comparison of distinct pointer types lacks a cast 222 | (void)(((typeof((n)) *)0) == ((uint64_t *)0)); \ | ^~ net/netfilter/ipvs/ip_vs_est.c:700:33: note: in expansion of macro 'do_div' 700 | do_div(val, min_est); | ^~~~~~ first argument of do_div() should be unsigned. We can't just cast as do_div() updates it as well, so we need an lval. Make val unsigned in the first place, all paths check that the value they assign to this variables are non-negative already. Fixes: 705dd3444081 ("ipvs: use kthreads for stats estimation") Signed-off-by: Jakub Kicinski Link: https://lore.kernel.org/r/20221213032037.844517-1-kuba@kernel.org Signed-off-by: Paolo Abeni --- net/netfilter/ipvs/ip_vs_est.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/netfilter/ipvs/ip_vs_est.c b/net/netfilter/ipvs/ip_vs_est.c index df56073..ce2a154 100644 --- a/net/netfilter/ipvs/ip_vs_est.c +++ b/net/netfilter/ipvs/ip_vs_est.c @@ -640,9 +640,10 @@ static int ip_vs_est_calc_limits(struct netns_ipvs *ipvs, int *chain_max) int i, loops, ntest; s32 min_est = 0; ktime_t t1, t2; - s64 diff, val; int max = 8; int ret = 1; + s64 diff; + u64 val; INIT_HLIST_HEAD(&chain); mutex_lock(&__ip_vs_mutex); -- 2.7.4