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| author | Al Viro <viro@zeniv.linux.org.uk> | 2017-03-21 02:08:07 +0100 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-03-28 22:43:25 +0200 |
| commit | db68ce10c4f0a27c1ff9fa0e789e5c41f8c4ea63 (patch) | |
| tree | 77eda1d247853a2d414e0047c620b3c72bb11a1a /kernel/trace/bpf_trace.c | |
| parent | add asm-generic/extable.h (diff) | |
| download | linux-db68ce10c4f0a27c1ff9fa0e789e5c41f8c4ea63.tar.xz linux-db68ce10c4f0a27c1ff9fa0e789e5c41f8c4ea63.zip | |
new helper: uaccess_kernel()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'kernel/trace/bpf_trace.c')
| -rw-r--r-- | kernel/trace/bpf_trace.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c index cee9802cf3e0..f806dbd66de9 100644 --- a/kernel/trace/bpf_trace.c +++ b/kernel/trace/bpf_trace.c @@ -96,7 +96,7 @@ BPF_CALL_3(bpf_probe_write_user, void *, unsafe_ptr, const void *, src, if (unlikely(in_interrupt() || current->flags & (PF_KTHREAD | PF_EXITING))) return -EPERM; - if (unlikely(segment_eq(get_fs(), KERNEL_DS))) + if (unlikely(uaccess_kernel())) return -EPERM; if (!access_ok(VERIFY_WRITE, unsafe_ptr, size)) return -EPERM; |