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authorMateusz Guzik <mguzik@redhat.com>2016-05-10 23:56:43 +0300
committerIngo Molnar <mingo@kernel.org>2016-05-13 14:50:15 +0300
commit4afd0565552c87f23834db9121dd9cf6955d0b43 (patch)
tree0991f864de6a6d558e86f6b0453371ffcdbc3d70 /arch
parent0676b4e0a1940a6b7ae3156bd212ca9032a29c30 (diff)
downloadlinux-4afd0565552c87f23834db9121dd9cf6955d0b43.tar.xz
x86/arch_prctl/64: Restore accidentally removed put_cpu() in ARCH_SET_GS
This fixes an oversight in: 731e33e39a5b95 ("Remove FSBASE/GSBASE < 4G optimization") Signed-off-by: Mateusz Guzik <mguzik@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Link: http://lkml.kernel.org/r/1462913803-29634-1-git-send-email-mguzik@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/process_64.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index 4285f6adcc5e..6b16c36f0939 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -541,6 +541,7 @@ long do_arch_prctl(struct task_struct *task, int code, unsigned long addr)
load_gs_index(0);
ret = wrmsrl_safe(MSR_KERNEL_GS_BASE, addr);
}
+ put_cpu();
break;
case ARCH_SET_FS:
/* Not strictly needed for fs, but do it for symmetry