diff options
| author | Christoph Hellwig <[email protected]> | 2020-06-25 20:30:43 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2020-06-26 00:27:38 -0700 |
| commit | 10d5e97c1bf816facbc7c431c6caf47ee35fc1ed (patch) | |
| tree | 02dc287ce6fbfabe7d1a65c64c76ab58cecbafe7 | |
| parent | 800e26b81311dcc0080b8784f80620bb8f2baaa5 (diff) | |
arm64: use PAGE_KERNEL_ROX directly in alloc_insn_page
Use PAGE_KERNEL_ROX directly instead of allocating RWX and setting the
page read-only just after the allocation.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Christoph Hellwig <[email protected]>
Acked-by: David Hildenbrand <[email protected]>
Acked-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Catalin Marinas <[email protected]>
Cc: Dexuan Cui <[email protected]>
Cc: Jessica Yu <[email protected]>
Cc: Vitaly Kuznetsov <[email protected]>
Cc: Wei Liu <[email protected]>
Cc: Will Deacon <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | arch/arm64/kernel/probes/kprobes.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/arch/arm64/kernel/probes/kprobes.c b/arch/arm64/kernel/probes/kprobes.c index d1c95dcf1d78..cbe49cd117cf 100644 --- a/arch/arm64/kernel/probes/kprobes.c +++ b/arch/arm64/kernel/probes/kprobes.c @@ -120,15 +120,9 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p) void *alloc_insn_page(void) { - void *page; - - page = vmalloc_exec(PAGE_SIZE); - if (page) { - set_memory_ro((unsigned long)page, 1); - set_vm_flush_reset_perms(page); - } - - return page; + return __vmalloc_node_range(PAGE_SIZE, 1, VMALLOC_START, VMALLOC_END, + GFP_KERNEL, PAGE_KERNEL_ROX, VM_FLUSH_RESET_PERMS, + NUMA_NO_NODE, __func__); } /* arm kprobe: install breakpoint in text */ |