4.14-stable review patch. If anyone has any objections, please let me know.
------------------ From: Dave Hansen <dave.han...@linux.intel.com> [ Upstream commit a50093d60464dd51d1ae0c2267b0abe9e1de77f3 ] There is some noisy debug code at the end of the signal handler. It was disabled by an early, unconditional "return". However, that return also hid a dprint_in_signal=0, which kept dprint_in_signal=1 and effectively locked us into permanent dprint_in_signal=1 behavior. Remove the return and the dead code, fixing dprint_in_signal. Signed-off-by: Dave Hansen <dave.han...@linux.intel.com> Cc: Andrew Morton <a...@linux-foundation.org> Cc: Dave Hansen <dave.han...@intel.com> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Michael Ellermen <m...@ellerman.id.au> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Ram Pai <linux...@us.ibm.com> Cc: Shuah Khan <sh...@kernel.org> Cc: Thomas Gleixner <t...@linutronix.de> Cc: linux...@kvack.org Link: http://lkml.kernel.org/r/20180509171342.846b9...@viggo.jf.intel.com Signed-off-by: Ingo Molnar <mi...@kernel.org> Signed-off-by: Sasha Levin <alexander.le...@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org> --- tools/testing/selftests/x86/protection_keys.c | 16 ---------------- 1 file changed, 16 deletions(-) --- a/tools/testing/selftests/x86/protection_keys.c +++ b/tools/testing/selftests/x86/protection_keys.c @@ -325,22 +325,6 @@ void signal_handler(int signum, siginfo_ dprintf1("WARNING: set PRKU=0 to allow faulting instruction to continue\n"); pkru_faults++; dprintf1("<<<<==================================================\n"); - return; - if (trapno == 14) { - fprintf(stderr, - "ERROR: In signal handler, page fault, trapno = %d, ip = %016lx\n", - trapno, ip); - fprintf(stderr, "si_addr %p\n", si->si_addr); - fprintf(stderr, "REG_ERR: %lx\n", - (unsigned long)uctxt->uc_mcontext.gregs[REG_ERR]); - exit(1); - } else { - fprintf(stderr, "unexpected trap %d! at 0x%lx\n", trapno, ip); - fprintf(stderr, "si_addr %p\n", si->si_addr); - fprintf(stderr, "REG_ERR: %lx\n", - (unsigned long)uctxt->uc_mcontext.gregs[REG_ERR]); - exit(2); - } dprint_in_signal = 0; }
