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Re: [PATCH] QUIC: better sockaddr initialization

Roman Arutyunyan
May 21, 2023 05:08AM
Hi,

On Sun, May 21, 2023 at 04:42:30AM +0300, Maxim Dounin wrote:
> # HG changeset patch
> # User Maxim Dounin <mdounin@mdounin.ru>
> # Date 1684633125 -10800
> # Sun May 21 04:38:45 2023 +0300
> # Node ID 68fa4b86ed46138dd1a8fcf2cfd80206de068bec
> # Parent 235d482ef6bc8c40a956b2413865d42c94e0fc05
> QUIC: better sockaddr initialization.
>
> The qsock->sockaddr field is a ngx_sockaddr_t union, and therefore can hold
> any sockaddr (and union members, such qsock->sockaddr.sockaddr, can be used
> to access appropriate variant of the sockaddr). It is better to set it via
> qsock->sockaddr itself though, and not qsock->sockaddr.sockaddr, so static
> analyzers won't complain about out-of-bounds access.
>
> Prodded by Coverity (CID 1530403).
>
> diff --git a/src/event/quic/ngx_event_quic_udp.c b/src/event/quic/ngx_event_quic_udp.c
> --- a/src/event/quic/ngx_event_quic_udp.c
> +++ b/src/event/quic/ngx_event_quic_udp.c
> @@ -183,7 +183,7 @@ ngx_quic_recvmsg(ngx_event_t *ev)
>
> qsock = ngx_quic_get_socket(c);
>
> - ngx_memcpy(&qsock->sockaddr.sockaddr, sockaddr, socklen);
> + ngx_memcpy(&qsock->sockaddr, sockaddr, socklen);
> qsock->socklen = socklen;
>
> c->udp->buffer = &buf;
> _______________________________________________
> nginx-devel mailing list
> nginx-devel@nginx.org
> https://mailman.nginx.org/mailman/listinfo/nginx-devel

Looks good
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Subject Author Views Posted

[PATCH] QUIC: better sockaddr initialization

Maxim Dounin 371 May 20, 2023 09:44PM

Re: [PATCH] QUIC: better sockaddr initialization

Roman Arutyunyan 126 May 21, 2023 05:08AM

Re: [PATCH] QUIC: better sockaddr initialization

Maxim Dounin 130 May 21, 2023 08:58AM

Re: [PATCH] QUIC: better sockaddr initialization

Alejandro Colomar 147 May 21, 2023 05:32AM

Re: [PATCH] QUIC: better sockaddr initialization

Maxim Dounin 135 May 21, 2023 09:12AM

Re: [PATCH] QUIC: better sockaddr initialization

Alejandro Colomar 135 May 21, 2023 10:36AM

Re: [PATCH] QUIC: better sockaddr initialization

Maxim Dounin 131 May 21, 2023 05:24PM

Re: [PATCH] QUIC: better sockaddr initialization

Alejandro Colomar 167 May 21, 2023 07:08PM

Re: [PATCH] QUIC: better sockaddr initialization

Maxim Dounin 132 May 21, 2023 10:36PM

memcpy(3), strict aliasing, pointer provenance rules (was: [PATCH] QUIC: better sockaddr initialization)

Alejandro Colomar 191 May 22, 2023 10:26AM

Re: memcpy(3), strict aliasing, pointer provenance rules (was: [PATCH] QUIC: better sockaddr initialization)

Maxim Dounin 199 May 22, 2023 04:06PM



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