imrcpan/erofs-linux
1
0 Fork 0
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git synced 2026-10-31 22:34:33 +01:00
Code Issues Packages Projects Releases Wiki Activity

parisc: Fix ptrace check on syscall return

Browse Source 
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: Helge Deller <[email protected]>
Fixes: ecd3d4bc06 ("parisc: stop using task->ptrace for {single,block}step flags")
Cc: Kyle McMartin <[email protected]>
Cc: [email protected]
This commit is contained in:
Helge Deller committed 2021-11-01 07:35:58 +01:00
1 parent 9cc2fa4f4a
commit 8779e05ba8
1 file changed
+1 -1
Download Patch File Download Diff File Expand all files Collapse all files
arch/parisc/kernel/entry.S
+1 -1
View File
@@ -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