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| author | Mateusz Guzik <mguzik@redhat.com> | 2016-05-10 23:56:43 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-05-13 14:50:15 +0300 |
| commit | 4afd0565552c87f23834db9121dd9cf6955d0b43 (patch) | |
| tree | 0991f864de6a6d558e86f6b0453371ffcdbc3d70 | |
| parent | 0676b4e0a1940a6b7ae3156bd212ca9032a29c30 (diff) | |
| download | linux-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>
| -rw-r--r-- | arch/x86/kernel/process_64.c | 1 |
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 |