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path: root/tools/perf/pmu-events/json.h
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#ifndef JSON_H
#define JSON_H 1

#include "jsmn.h"

jsmntok_t *parse_json(const char *fn, char **map, size_t *size, int *len);
void free_json(char *map, size_t size, jsmntok_t *tokens);
int json_line(char *map, jsmntok_t *t);
const char *json_name(jsmntok_t *t);
int json_streq(char *map, jsmntok_t *t, const char *s);
int json_len(jsmntok_t *t);

extern int verbose;

#include <stdbool.h>

extern int eprintf(int level, int var, const char *fmt, ...);
#define pr_fmt(fmt)	fmt

#define pr_err(fmt, ...) \
	eprintf(0, verbose, pr_fmt(fmt), ##__VA_ARGS__)

#define pr_info(fmt, ...) \
	eprintf(1, verbose, pr_fmt(fmt), ##__VA_ARGS__)

#define pr_debug(fmt, ...) \
	eprintf(2, verbose, pr_fmt(fmt), ##__VA_ARGS__)

#ifndef roundup
#define roundup(x, y) (                                \
{                                                      \
        const typeof(y) __y = y;                       \
        (((x) + (__y - 1)) / __y) * __y;               \
}                                                      \
)
#endif

#endif
77a1fcb6d6dc0126b076aad062054c2637'>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 'drivers/usb/host/whci/hw.c')