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* [2.32 COMMITED] aarch64: fix static PIE start code for BTI [BZ #27068]
@ 2021-01-21 16:05 Szabolcs Nagy
  0 siblings, 0 replies; only message in thread
From: Szabolcs Nagy @ 2021-01-21 16:05 UTC (permalink / raw)
  To: libc-stable; +Cc: Guillaume Gardet

From: Guillaume Gardet <guillaume.gardet@arm.com>

A bti c was missing from rcrt1.o which made all -static-pie
binaries fail at program startup on BTI enabled systems.

Fixes bug 27068.

(cherry picked from commit d4136903a29baabeec8987b53081def8b4a49826)
---
 sysdeps/aarch64/start.S | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sysdeps/aarch64/start.S b/sysdeps/aarch64/start.S
index 108f602721..1998ea95d4 100644
--- a/sysdeps/aarch64/start.S
+++ b/sysdeps/aarch64/start.S
@@ -99,6 +99,7 @@ ENTRY(_start)
 	   because crt1.o and rcrt1.o share code and the later must avoid the
 	   use of GOT relocations before __libc_start_main is called.  */
 __wrap_main:
+	BTI_C
 	b	main
 #endif
 END(_start)
-- 
2.17.1


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2021-01-21 16:05 [2.32 COMMITED] aarch64: fix static PIE start code for BTI [BZ #27068] Szabolcs Nagy

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