From: Kirill Tkhai Date: Fri, 26 Jul 2013 13:21:12 +0000 (+0400) Subject: sparc64: Fix not SRA'ed %o5 in 32-bit traced syscall X-Git-Tag: firefly_0821_release~176^2~5419^2~6 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ab2abda6377723e0d5fbbfe5f5aa16a5523344d1;p=firefly-linux-kernel-4.4.55.git sparc64: Fix not SRA'ed %o5 in 32-bit traced syscall (From v1 to v2: changed comment) On the way linux_sparc_syscall32->linux_syscall_trace32->goto 2f, register %o5 doesn't clear its second 32-bit. Fix that. Signed-off-by: Kirill Tkhai CC: David Miller Signed-off-by: David S. Miller --- diff --git a/arch/sparc/kernel/syscalls.S b/arch/sparc/kernel/syscalls.S index 868ed222206c..d950197a17e1 100644 --- a/arch/sparc/kernel/syscalls.S +++ b/arch/sparc/kernel/syscalls.S @@ -152,7 +152,7 @@ linux_syscall_trace32: srl %i4, 0, %o4 srl %i1, 0, %o1 srl %i2, 0, %o2 - ba,pt %xcc, 2f + ba,pt %xcc, 5f srl %i3, 0, %o3 linux_syscall_trace: @@ -182,13 +182,13 @@ linux_sparc_syscall32: srl %i1, 0, %o1 ! IEU0 Group ldx [%g6 + TI_FLAGS], %l0 ! Load - srl %i5, 0, %o5 ! IEU1 + srl %i3, 0, %o3 ! IEU0 srl %i2, 0, %o2 ! IEU0 Group andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT), %g0 bne,pn %icc, linux_syscall_trace32 ! CTI mov %i0, %l5 ! IEU1 - call %l7 ! CTI Group brk forced - srl %i3, 0, %o3 ! IEU0 +5: call %l7 ! CTI Group brk forced + srl %i5, 0, %o5 ! IEU1 ba,a,pt %xcc, 3f /* Linux native system calls enter here... */