From owner-dev-commits-src-branches@freebsd.org Thu Jun 17 14:54:46 2021 Return-Path: Delivered-To: dev-commits-src-branches@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 57A4365463A; Thu, 17 Jun 2021 14:54:46 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4G5Q7p1Hfgz4vZC; Thu, 17 Jun 2021 14:54:46 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id EEED211806; Thu, 17 Jun 2021 14:54:45 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 15HEsjVP010665; Thu, 17 Jun 2021 14:54:45 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 15HEsjVb010664; Thu, 17 Jun 2021 14:54:45 GMT (envelope-from git) Date: Thu, 17 Jun 2021 14:54:45 GMT Message-Id: <202106171454.15HEsjVb010664@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Kristof Provost Subject: git: 719f6456fbde - stable/12 - dummynet: free(NULL, M_DUMMYNET); is safe MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: kp X-Git-Repository: src X-Git-Refname: refs/heads/stable/12 X-Git-Reftype: branch X-Git-Commit: 719f6456fbdee54f94109f945d7d945b2abf9589 Auto-Submitted: auto-generated X-BeenThere: dev-commits-src-branches@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Commits to the stable branches of the FreeBSD src repository List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 17 Jun 2021 14:54:46 -0000 The branch stable/12 has been updated by kp: URL: https://cgit.FreeBSD.org/src/commit/?id=719f6456fbdee54f94109f945d7d945b2abf9589 commit 719f6456fbdee54f94109f945d7d945b2abf9589 Author: Kristof Provost AuthorDate: 2021-05-21 14:55:07 +0000 Commit: Kristof Provost CommitDate: 2021-06-17 14:53:36 +0000 dummynet: free(NULL, M_DUMMYNET); is safe There's no need to check pointers for NULL before free()ing them. No functional change. MFC after: 2 weeks Sponsored by: Rubicon Communications, LLC ("Netgate") Differential Revision: https://reviews.freebsd.org/D30382 (cherry picked from commit 1b2dbe37fa32d7255faf7d1feec7bb31414a8102) --- sys/netpfil/ipfw/ip_dummynet.c | 46 ++++++++++++++++-------------------------- 1 file changed, 17 insertions(+), 29 deletions(-) diff --git a/sys/netpfil/ipfw/ip_dummynet.c b/sys/netpfil/ipfw/ip_dummynet.c index c412a45f7296..57565e0d7d23 100644 --- a/sys/netpfil/ipfw/ip_dummynet.c +++ b/sys/netpfil/ipfw/ip_dummynet.c @@ -758,8 +758,7 @@ fsk_detach(struct dn_fsk *fs, int flags) /* Free the RED parameters, they will be recomputed on * subsequent attach if needed. */ - if (fs->w_q_lookup) - free(fs->w_q_lookup, M_DUMMYNET); + free(fs->w_q_lookup, M_DUMMYNET); fs->w_q_lookup = NULL; qht_delete(fs, flags); #ifdef NEW_AQM @@ -911,10 +910,9 @@ schk_delete_cb(void *obj, void *arg) dn_ht_free(s->siht, 0); } else if (s->siht) si_destroy(s->siht, NULL); - if (s->profile) { - free(s->profile, M_DUMMYNET); - s->profile = NULL; - } + + free(s->profile, M_DUMMYNET); + s->profile = NULL; s->siht = NULL; if (s->fp->destroy) s->fp->destroy(s); @@ -1238,10 +1236,8 @@ config_red(struct dn_fsk *fs) } /* If the lookup table already exist, free and create it again. */ - if (fs->w_q_lookup) { - free(fs->w_q_lookup, M_DUMMYNET); - fs->w_q_lookup = NULL; - } + free(fs->w_q_lookup, M_DUMMYNET); + fs->w_q_lookup = NULL; if (V_dn_cfg.red_lookup_depth == 0) { printf("\ndummynet: net.inet.ip.dummynet.red_lookup_depth" "must be > 0\n"); @@ -1580,10 +1576,9 @@ config_link(struct dn_link *p, struct dn_id *arg) return EINVAL; } /* remove profile if exists */ - if (s->profile) { - free(s->profile, M_DUMMYNET); - s->profile = NULL; - } + free(s->profile, M_DUMMYNET); + s->profile = NULL; + /* copy all parameters */ s->link.oid = p->oid; s->link.link_nr = i; @@ -1707,8 +1702,7 @@ config_fs(struct dn_fs *nfs, struct dn_id *arg, int locked) if (!locked) DN_BH_WUNLOCK(); #ifdef NEW_AQM - if (ep != NULL) - free(ep, M_TEMP); + free(ep, M_TEMP); #endif return fs; } @@ -1907,8 +1901,7 @@ next: err = 0; error: DN_BH_WUNLOCK(); - if (pf) - free(pf, M_DUMMYNET); + free(pf, M_DUMMYNET); return err; } @@ -2136,10 +2129,8 @@ do_config(void *p, int l) break; off += o.len; } - if (arg != NULL) - free(arg, M_TEMP); - if (dn != NULL) - free(dn, M_TEMP); + free(arg, M_TEMP); + free(dn, M_TEMP); return err; } @@ -2325,8 +2316,7 @@ dummynet_get(struct sockopt *sopt, void **compat) break; DN_BH_WUNLOCK(); - if (start) - free(start, M_DUMMYNET); + free(start, M_DUMMYNET); start = NULL; if (need > sopt_valsize) break; @@ -2384,10 +2374,9 @@ dummynet_get(struct sockopt *sopt, void **compat) error = sooptcopyout(sopt, start, buf - start); } done: - if (cmd && cmd != &r.o) + if (cmd != &r.o) free(cmd, M_DUMMYNET); - if (start) - free(start, M_DUMMYNET); + free(start, M_DUMMYNET); return error; } @@ -2548,8 +2537,7 @@ ip_dn_ctl(struct sockopt *sopt) break; } - if (p != NULL) - free(p, M_TEMP); + free(p, M_TEMP); NET_EPOCH_EXIT_ET(et);