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#include <sys/types.h>
#include <sys/socket.h>
#include <linux/udp.h>
#include <linux/tcp.h>
#include <linux/in.h>

#include "corking.h"
#include "die.h"

void set_udp_cork(int fd)
{
	int ret, state = 1;

	ret = setsockopt(fd, IPPROTO_UDP, UDP_CORK, &state, sizeof(state));
	if (unlikely(ret))
		panic("Cannot cork UDP socket!\n");
}

void set_udp_uncork(int fd)
{
	int ret, state = 0;

	ret = setsockopt(fd, IPPROTO_UDP, UDP_CORK, &state, sizeof(state));
	if (unlikely(ret))
		panic("Cannot uncork UDP socket!\n");
}

void set_tcp_cork(int fd)
{
	int ret, state = 1;

	ret = setsockopt(fd, IPPROTO_TCP, TCP_CORK, &state, sizeof(state));
	if (unlikely(ret))
		panic("Cannot cork TCP socket!\n");
}

void set_tcp_uncork(int fd)
{
	int ret, state = 0;

	ret = setsockopt(fd, IPPROTO_TCP, TCP_CORK, &state, sizeof(state));
	if (unlikely(ret))
		panic("Cannot uncork TCP socket!\n");
}

void set_sock_cork(int fd, bool is_udp)
{
	if (is_udp)
		set_udp_cork(fd);
	else
		set_tcp_cork(fd);
}

void set_sock_uncork(int fd, bool is_udp)
{
	if (is_udp)
		set_udp_uncork(fd);
	else
		set_tcp_uncork(fd);
}
6499e3dfaeb0949241ab588'>tools/testing/selftests/powerpc/primitives/asm/asm-compat.h parent566cf877a1fcb6d6dc0126b076aad062054c2637 (diff)
perf/core: Fix use-after-free bug
Dmitry reported a KASAN use-after-free on event->group_leader. It turns out there's a hole in perf_remove_from_context() due to event_function_call() not calling its function when the task associated with the event is already dead. In this case the event will have been detached from the task, but the grouping will have been retained, such that group operations might still work properly while there are live child events etc. This does however mean that we can miss a perf_group_detach() call when the group decomposes, this in turn can then lead to use-after-free. Fix it by explicitly doing the group detach if its still required. Reported-by: Dmitry Vyukov <dvyukov@google.com> Tested-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org # v4.5+ Cc: syzkaller <syzkaller@googlegroups.com> Fixes: 63b6da39bb38 ("perf: Fix perf_event_exit_task() race") Link: http://lkml.kernel.org/r/20170126153955.GD6515@twins.programming.kicks-ass.net Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/testing/selftests/powerpc/primitives/asm/asm-compat.h')