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Index: head/sys/powerpc/powerpc/sigcode64.S
===================================================================
--- head/sys/powerpc/powerpc/sigcode64.S
+++ head/sys/powerpc/powerpc/sigcode64.S
@@ -63,9 +63,13 @@
addi 3,1,112+SF_UC /* restore sp, and get &frame->sf_uc */
li 0,SYS_sigreturn
sc /* sigreturn(scp) */
+ /*
+ * If we get back to here, it means sigreturn failed.
+ * As such, we are now stuck in the wrong context.
+ * Exit immediately without touching the stack.
+ */
li 0,SYS_exit
sc /* exit(errno) */
- nop /* align to doubleword */
endsigcode64:
.data

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