4.4-stable review patch. If anyone has any objections, please let me know.
------------------ From: Eric W. Biederman <[email protected]> commit 7de712ccc096b81d23cc0a941cd9b8cb3956605d upstream. While working on changing this code to use force_sig_fault I discovered that do_unaliged_user is sets si_signo to SIGBUS and passes SIGSEGV to force_sig_info. Which is just b0rked. The code is reporting a SIGBUS error so replace the SIGSEGV with SIGBUS. Cc: Chris Zankel <[email protected]> Cc: Max Filippov <[email protected]> Cc: [email protected] Cc: [email protected] Acked-by: Max Filippov <[email protected]> Fixes: 5a0015d62668 ("[PATCH] xtensa: Architecture support for Tensilica Xtensa Part 3") Signed-off-by: "Eric W. Biederman" <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- arch/xtensa/kernel/traps.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/xtensa/kernel/traps.c +++ b/arch/xtensa/kernel/traps.c @@ -309,7 +309,7 @@ do_unaligned_user (struct pt_regs *regs) info.si_errno = 0; info.si_code = BUS_ADRALN; info.si_addr = (void *) regs->excvaddr; - force_sig_info(SIGSEGV, &info, current); + force_sig_info(SIGBUS, &info, current); } #endif
