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 <[email protected]>
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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