Re: [BUG] 2.6.12-rc3: unkillable java process in TASK_RUNNING on AMD64

[Andi Kleen]

Does this patch fix the problem?

Initialize workmask correct on interrupt signal handling

Readd missing clis in the interrupt return path.

Signed-off-by: Andi Kleen <ak@xxxxxxx>



diff -u linux-2.6.12rc3/arch/x86_64/kernel/entry.S-o linux-2.6.12rc3/arch/x86_64/kernel/entry.S
--- linux-2.6.12rc3/arch/x86_64/kernel/entry.S-o	2005-04-22 12:48:11.000000000 +0200
+++ linux-2.6.12rc3/arch/x86_64/kernel/entry.S	2005-04-27 15:52:49.305183345 +0200
@@ -296,6 +296,7 @@
 	call syscall_trace_leave
 	popq %rdi
 	andl $~(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SINGLESTEP),%edi
+	cli	
 	jmp int_restore_rest
 	
 int_signal:
@@ -307,6 +308,7 @@
 1:	movl $_TIF_NEED_RESCHED,%edi	
 int_restore_rest:
 	RESTORE_REST
+	cli	
 	jmp int_with_check
 	CFI_ENDPROC
 		
@@ -490,7 +492,8 @@
 	call do_notify_resume
 	RESTORE_REST
 	cli
-	GET_THREAD_INFO(%rcx)	
+	GET_THREAD_INFO(%rcx)
+	movl $_TIF_WORK_MASK,%edi	
 	jmp retint_check
 
 #ifdef CONFIG_PREEMPT
-
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