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Bottomley" , Helge Deller , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , Ian Abbott , H Hartley Sweeten , Tony Luck , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Matthew Brost , Thomas =?ISO-8859-1?Q?Hellstr=F6m?= , Rodrigo Vivi , Dmitry Torokhov , Matthias Schwarzott , Mauro Carvalho Chehab , Tony Nguyen , Przemek Kitszel , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Arend van Spriel , Rob Herring , Saravana Kannan , Krzysztof Kozlowski , Sylwester Nawrocki , Peter Griffin , Alim Akhtar , Linus Walleij , Anil Gurumurthy , Sudarsana Kalluru , "Martin K. 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On Tue, 2026-09-15 at 08:18 +0000, Bill Wendling wrote: > rpc_sockaddr2uaddr() formats the IP address into "addrbuf", formats the > port into a temporary "portbuf" buffer with snprintf(), and then appends > "portbuf" to "addrbuf" using strlcat(). >=20 > In preparation for removing the deprecated strlcat() API[1], capture the > length returned by rpc_ntop4() and rpc_ntop6_noscopeid() and format the > port directly onto the end of "addrbuf" with snprintf(). This eliminates > the strlcat() call and the temporary "portbuf" buffer. >=20 > Link: https://github.com/KSPP/linux/issues/370 [1] > Cc: codemender-patching+linux@google.com > Assisted-by: CoPilot:3.5-sonnet [editor_update_file, shell_command_run] > Signed-off-by: Bill Wendling > --- > Cc: Russell King > Cc: Huacai Chen > Cc: WANG Xuerui > Cc: Thomas Bogendoerfer > Cc: "James E.J. Bottomley" > Cc: Helge Deller > Cc: Thomas Gleixner > Cc: Ingo Molnar > Cc: Borislav Petkov > Cc: Dave Hansen > Cc: x86@kernel.org > Cc: "H. Peter Anvin" > Cc: Ian Abbott > Cc: H Hartley Sweeten > Cc: Tony Luck > Cc: Maarten Lankhorst > Cc: Maxime Ripard > Cc: Thomas Zimmermann > Cc: David Airlie > Cc: Simona Vetter > Cc: Matthew Brost > Cc: "Thomas Hellstr=C3=B6m" > Cc: Rodrigo Vivi > Cc: Dmitry Torokhov > Cc: Matthias Schwarzott > Cc: Mauro Carvalho Chehab > Cc: Tony Nguyen > Cc: Przemek Kitszel > Cc: Andrew Lunn > Cc: "David S. Miller" > Cc: Eric Dumazet > Cc: Jakub Kicinski > Cc: Paolo Abeni > Cc: Arend van Spriel > Cc: Rob Herring > Cc: Saravana Kannan > Cc: Krzysztof Kozlowski > Cc: Sylwester Nawrocki > Cc: Peter Griffin > Cc: Alim Akhtar > Cc: Linus Walleij > Cc: Anil Gurumurthy > Cc: Sudarsana Kalluru > Cc: "Martin K. Petersen" > Cc: Trond Myklebust > Cc: Anna Schumaker > Cc: Mike Marshall > Cc: Martin Brandenburg > Cc: Kees Cook > Cc: Jiri Pirko > Cc: Simon Horman > Cc: Chuck Lever > Cc: Jeff Layton > Cc: NeilBrown > Cc: Olga Kornievskaia > Cc: Dai Ngo > Cc: Tom Talpey > Cc: Jaroslav Kysela > Cc: Takashi Iwai > Cc: Bill Wendling > Cc: Andrew Morton > Cc: "Mike Rapoport (Microsoft)" > Cc: Kanglong Wang > Cc: Tiezhu Yang > Cc: Qiang Ma > Cc: Randy Dunlap > Cc: Pengpeng Hou > Cc: Ard Biesheuvel > Cc: Breno Leitao > Cc: Thorsten Blum > Cc: Harshit Mogalapalli > Cc: Greg Kroah-Hartman > Cc: Lyude Paul > Cc: Ashutosh Desai > Cc: Imre Deak > Cc: Dmitry Baryshkov > Cc: Johan Hovold > Cc: Johannes Berg > Cc: Miri Korenblit > Cc: Alexander Stein > Cc: Cryolitia PukNgae > Cc: Jiaming Zhang > Cc: Will Porter > Cc: Cen Zhang > Cc: "C=C3=A1ssio Gabriel" > Cc: Rong Zhang > Cc: Arun Raghavan > Cc: linux-arm-kernel@lists.infradead.org > Cc: linux-kernel@vger.kernel.org > Cc: loongarch@lists.linux.dev > Cc: linux-mips@vger.kernel.org > Cc: linux-parisc@vger.kernel.org > Cc: linux-edac@vger.kernel.org > Cc: dri-devel@lists.freedesktop.org > Cc: intel-xe@lists.freedesktop.org > Cc: linux-input@vger.kernel.org > Cc: linux-media@vger.kernel.org > Cc: intel-wired-lan@lists.osuosl.org > Cc: netdev@vger.kernel.org > Cc: linux-wireless@vger.kernel.org > Cc: brcm80211@lists.linux.dev > Cc: brcm80211-dev-list.pdl@broadcom.com > Cc: devicetree@vger.kernel.org > Cc: linux-samsung-soc@vger.kernel.org > Cc: linux-gpio@vger.kernel.org > Cc: linux-scsi@vger.kernel.org > Cc: linux-nfs@vger.kernel.org > Cc: devel@lists.orangefs.org > Cc: linux-hardening@vger.kernel.org > Cc: linux-sound@vger.kernel.org > --- > net/sunrpc/addr.c | 16 ++++++++-------- > 1 file changed, 8 insertions(+), 8 deletions(-) >=20 > diff --git a/net/sunrpc/addr.c b/net/sunrpc/addr.c > index 97ff11973c49..a1e4173e5a53 100644 > --- a/net/sunrpc/addr.c > +++ b/net/sunrpc/addr.c > @@ -264,18 +264,20 @@ EXPORT_SYMBOL_GPL(rpc_pton); > */ > char *rpc_sockaddr2uaddr(const struct sockaddr *sap, gfp_t gfp_flags) > { > - char portbuf[RPCBIND_MAXUADDRPLEN]; > char addrbuf[RPCBIND_MAXUADDRLEN]; > unsigned short port; > + size_t len; > =20 > switch (sap->sa_family) { > case AF_INET: > - if (rpc_ntop4(sap, addrbuf, sizeof(addrbuf)) =3D=3D 0) > + len =3D rpc_ntop4(sap, addrbuf, sizeof(addrbuf)); > + if (len =3D=3D 0 || len >=3D sizeof(addrbuf)) > return NULL; > port =3D ntohs(((struct sockaddr_in *)sap)->sin_port); > break; > case AF_INET6: > - if (rpc_ntop6_noscopeid(sap, addrbuf, sizeof(addrbuf)) =3D=3D 0) > + len =3D rpc_ntop6_noscopeid(sap, addrbuf, sizeof(addrbuf)); > + if (len =3D=3D 0 || len >=3D sizeof(addrbuf)) > return NULL; > port =3D ntohs(((struct sockaddr_in6 *)sap)->sin6_port); > break; > @@ -283,11 +285,8 @@ char *rpc_sockaddr2uaddr(const struct sockaddr *sap,= gfp_t gfp_flags) > return NULL; > } > =20 > - if (snprintf(portbuf, sizeof(portbuf), > - ".%u.%u", port >> 8, port & 0xff) >=3D (int)sizeof(portbuf)) > - return NULL; > - > - if (strlcat(addrbuf, portbuf, sizeof(addrbuf)) >=3D sizeof(addrbuf)) > + if (snprintf(addrbuf + len, sizeof(addrbuf) - len, > + ".%u.%u", port >> 8, port & 0xff) >=3D sizeof(addrbuf) - len) > return NULL; > =20 > return kstrdup(addrbuf, gfp_flags); > @@ -352,3 +351,4 @@ size_t rpc_uaddr2sockaddr(struct net *net, const char= *uaddr, > return 0; > } > EXPORT_SYMBOL_GPL(rpc_uaddr2sockaddr); > + The last blank line here is not needed. The rest looks fine though. Reviewed-by: Jeff Layton