* Namhyung Kim <namhyung@xxxxxxxxx> wrote: > The %pT format specifier is for stack backtrace. Its handler > sprint_trace() does symbol lookup using (address-1) to ensure > the address will not point outside of the function. > > If there is a tail-call to the function marked "noreturn", > gcc optimized out the code after the call then causes saved > return address points outside of the function (i.e. the start > of the next function), so pollutes call trace somewhat. > This patch will fix it. > > Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxx> > Cc: linux-arch@xxxxxxxxxxxxxxx > --- > include/linux/kallsyms.h | 7 +++++++ > kernel/kallsyms.c | 40 ++++++++++++++++++++++++++++++++++++++++ > lib/vsprintf.c | 7 ++++++- > 3 files changed, 53 insertions(+), 1 deletions(-) Looks useful. Please include before/after stack dump examples in the changelog, to show the difference. Thanks, Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
