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| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2019-07-01 19:33:54 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2019-07-09 13:57:27 +0200 |
| commit | 39ca5fb4920a96eeab478be2cfa6a2369fef6b02 (patch) | |
| tree | 0592e2fb936d42a40835340099b9fa81d54577ff /arch | |
| parent | 222a21d29521d144f3dd7a0bc4d4020e448f0126 (diff) | |
| download | linux-stable-39ca5fb4920a96eeab478be2cfa6a2369fef6b02.tar.gz linux-stable-39ca5fb4920a96eeab478be2cfa6a2369fef6b02.tar.bz2 linux-stable-39ca5fb4920a96eeab478be2cfa6a2369fef6b02.zip | |
x86/ldt: Initialize the context lock for init_mm
The mutex mm->context->lock for init_mm is not initialized for init_mm.
This wasn't a problem because it remained unused. This changed however
since commit
4fc19708b165c ("x86/alternatives: Initialize temporary mm for patching")
Initialize the mutex for init_mm.
Fixes: 4fc19708b165c ("x86/alternatives: Initialize temporary mm for patching")
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Nadav Amit <namit@vmware.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Link: https://lkml.kernel.org/r/20190701173354.2pe62hhliok2afea@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/mmu.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/mmu.h b/arch/x86/include/asm/mmu.h index 5ff3e8af2c20..e78c7db87801 100644 --- a/arch/x86/include/asm/mmu.h +++ b/arch/x86/include/asm/mmu.h @@ -59,6 +59,7 @@ typedef struct { #define INIT_MM_CONTEXT(mm) \ .context = { \ .ctx_id = 1, \ + .lock = __MUTEX_INITIALIZER(mm.context.lock), \ } void leave_mm(int cpu); |