* Bug in asm-i386/rwlock.h
@ 2002-06-04 14:08 Alexey Vyskubov
0 siblings, 0 replies; only message in thread
From: Alexey Vyskubov @ 2002-06-04 14:08 UTC (permalink / raw)
To: linux-kernel; +Cc: torvalds
Hello.
We suppose that include/asm-i386/rwlock.h contains a bug.
Under some circumstances (compiling some external modules + no
optimization + SMP) it's possible to get the following error:
/tmp/ccw7qDe1.s: Assembler messages:
/tmp/ccw7qDe1.s:6815: Error: bad expression
/tmp/ccw7qDe1.s:6815: Error: missing ')'
/tmp/ccw7qDe1.s:6815: Error: missing ')'
/tmp/ccw7qDe1.s:6815: Error: junk `ebx))' after expression
We believe that it's a typo in include/asm-i386/rwlock.h
--- include/asm-i386/rwlock.h.orig Tue Jun 4 16:32:38 2002
+++ include/asm-i386/rwlock.h Tue Jun 4 16:33:02 2002
@@ -61,7 +61,7 @@
::"a" (rw) : "memory")
#define __build_write_lock_const(rw, helper) \
- asm volatile(LOCK "subl $" RW_LOCK_BIAS_STR ",(%0)\n\t" \
+ asm volatile(LOCK "subl $" RW_LOCK_BIAS_STR ",%0\n\t" \
"jnz 2f\n" \
"1:\n" \
".section .text.lock,\"ax\"\n" \
--
Alexey Vyskubov
Dmitry Kasatkin
Nokia Research Center / Helsinki
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