Commit 8779e05b authored by Helge Deller's avatar Helge Deller
Browse files

parisc: Fix ptrace check on syscall return 



The TIF_XXX flags are stored in the flags field in the thread_info
struct (TI_FLAGS), not in the flags field of the task_struct structure
(TASK_FLAGS).

It seems this bug didn't generate any important side-effects, otherwise it
wouldn't have went unnoticed for 12 years (since v2.6.32).

Signed-off-by: default avatarHelge Deller <deller@gmx.de>
Fixes: ecd3d4bc ("parisc: stop using task->ptrace for {single,block}step flags")
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: stable@vger.kernel.org
parent 9cc2fa4f

arch/parisc/kernel/entry.S

+1 −1
Original line number Diff line number Diff line
@@ -1834,7 +1834,7 @@ syscall_restore: 
	LDREG	TI_TASK-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r1



	/* Are we being ptraced? */

	ldw	TASK_FLAGS(%r1),%r19

	LDREG	TI_FLAGS-THREAD_SZ_ALGN-FRAME_SIZE(%r30),%r19

	ldi	_TIF_SYSCALL_TRACE_MASK,%r2

	and,COND(=)	%r19,%r2,%r0

	b,n	syscall_restore_rfi