linux-kernel - Re: [PATCH V1] um: Fix compilation warnings

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Date:   Tue, 14 Feb 2023 22:57:01 +0100 (CET)
From:   Richard Weinberger <richard@....at>
To:     Srinivasarao Pathipati <quic_c_spathi@...cinc.com>
Cc:     anton ivanov <anton.ivanov@...bridgegreys.com>,
        Johannes Berg <johannes@...solutions.net>,
        linux-um <linux-um@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V1] um: Fix compilation warnings

----- Ursprüngliche Mail -----
> Von: "Srinivasarao Pathipati" <quic_c_spathi@...cinc.com>
> static void sig_handler_common(int sig, struct siginfo *si, mcontext_t *mc)
> {
> -	struct uml_pt_regs r;
> +	struct uml_pt_regs *r;
> 	int save_errno = errno;
> 
> -	r.is_user = 0;
> +	r = malloc(sizeof(struct uml_pt_regs));

I fear this is not correct since malloc() is not async-signal safe.

Thanks,
//richard