https://github.com/torvalds/linux
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Tip revision: ff1176468d368232b684f75e82563369208bc371 authored by Linus Torvalds on 25 July 2021, 22:35:14 UTC
Linux 5.14-rc3
Tip revision: ff11764
stub_segv.c
/*
 * Copyright (C) 2004 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
 * Licensed under the GPL
 */

#include <sysdep/stub.h>
#include <sysdep/faultinfo.h>
#include <sysdep/mcontext.h>
#include <sys/ucontext.h>

void __attribute__ ((__section__ (".__syscall_stub")))
stub_segv_handler(int sig, siginfo_t *info, void *p)
{
	int stack;
	ucontext_t *uc = p;
	struct faultinfo *f = (void *)(((unsigned long)&stack) & ~(UM_KERN_PAGE_SIZE - 1));

	GET_FAULTINFO_FROM_MC(*f, &uc->uc_mcontext);
	trap_myself();
}

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