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(parent: 60cc43f) | patch
x86/ldt: Fix support_pte_mask filtering in map_ldt_struct()
authorJoerg Roedel <jroedel@suse.de>
Mon, 16 Apr 2018 09:43:57 +0000 (11:43 +0200)
committerLinus Torvalds <torvalds@linux-foundation.org>
Mon, 16 Apr 2018 18:20:34 +0000 (11:20 -0700)
commite6f39e87b6439939a14cb7fdd94086a082b63b87
tree6df2d211a3e49359466e8b0dd3183a5d2d285495tree | snapshot
parent60cc43fc888428bb2f18f08997432d426a243338commit | diff
x86/ldt: Fix support_pte_mask filtering in map_ldt_struct()

The |= operator will let us end up with an invalid PTE. Use
the correct &= instead.

[ The bug was also independently reported by Shuah Khan ]

Fixes: fb43d6cb91ef ('x86/mm: Do not auto-massage page protections')
Acked-by: Andy Lutomirski <luto@kernel.org>
Acked-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/x86/kernel/ldt.c diff | blob | history
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