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| author | Andy Lutomirski <luto@kernel.org> | 2020-02-24 13:24:58 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-06-11 15:14:33 +0200 |
| commit | 24ae0c91cbc57c2deb0401bd653453a508acdcee (patch) | |
| tree | 757bf36dcca535e0e58bee390fa9b9d0423d6cfc /crypto/blake2b_generic.c | |
| parent | 1f1fbc70c10e81f70e9fbe2102d439c883269811 (diff) | |
x86/hw_breakpoint: Prevent data breakpoints on cpu_entry_area
A data breakpoint near the top of an IST stack will cause unrecoverable
recursion. A data breakpoint on the GDT, IDT, or TSS is terrifying.
Prevent either of these from happening.
Co-developed-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Lai Jiangshan <jiangshanlai@gmail.com>
Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Link: https://lkml.kernel.org/r/20200505134058.272448010@linutronix.de
Diffstat (limited to 'crypto/blake2b_generic.c')
0 files changed, 0 insertions, 0 deletions