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dtrace: do not use copy_from_user when accessing kernel stack
authorKris Van Hees <kris.van.hees@oracle.com>
Tue, 12 Dec 2017 18:19:21 +0000 (13:19 -0500)
committerKris Van Hees <kris.van.hees@oracle.com>
Fri, 15 Dec 2017 05:28:13 +0000 (00:28 -0500)
commitd9d9e275a9a31fbd6f085bbd809d15753137d0a4
tree320ffdd9ac0062e78fba3eb82a5a8c297a742ad1tree
parent00e6db9038bf73605544ea430012f5272c348091commit | diff
dtrace: do not use copy_from_user when accessing kernel stack

The implementation of sdt_getarg() for x86_64 uses a copy_from_user
variant while reading from kernel stack which is obviously wrong.
This commit corrects that.

Orabug: 25949088
Signed-off-by: Kris Van Hees <kris.van.hees@oracle.com>
Reviewed-by: Tomas Jedlicka <tomas.jedlicka@oracle.com>
arch/x86/dtrace/sdt_x86_64.c diff | blob | history
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