mirror of
https://github.com/torvalds/linux.git
synced 2024-12-19 09:32:32 +00:00
ebc8827f75
In x86, faults exit by executing the iret instruction, which then reenables NMIs if we faulted in NMI context. Then if a fault happens in NMI, another NMI can nest after the fault exits. But we don't yet support nested NMIs because we have only one NMI stack. To prevent from that, check that vmalloc and kmemcheck faults don't happen in this context. Most of the other kernel faults in NMIs can be more easily spotted by finding explicit copy_from,to_user() calls on review. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> |
||
|---|---|---|
| .. | ||
| error.c | ||
| error.h | ||
| kmemcheck.c | ||
| Makefile | ||
| opcode.c | ||
| opcode.h | ||
| pte.c | ||
| pte.h | ||
| selftest.c | ||
| selftest.h | ||
| shadow.c | ||
| shadow.h | ||