diff options
author | Richard Weinberger <richard@nod.at> | 2014-12-10 13:53:51 +0100 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-01-27 08:29:45 -0800 |
commit | b9d078ca4432b59f167e9c7824d8248353ede275 (patch) | |
tree | 4b84a50eb0888267c5d2d5e1555da07aa11465dd /drivers/Makefile | |
parent | dcd295f7bec22860063b1339162d18b811659c4b (diff) |
um: Skip futex_atomic_cmpxchg_inatomic() test
commit f911d731054ab3d82ee72a16b889e17ca3a2332a upstream.
futex_atomic_cmpxchg_inatomic() does not work on UML because
it triggers a copy_from_user() in kernel context.
On UML copy_from_user() can only be used if the kernel was called
by a real user space process such that UML can use ptrace()
to fetch the value.
Reported-by: Miklos Szeredi <miklos@szeredi.hu>
Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
Tested-by: Daniel Walter <d.walter@0x90.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/Makefile')
0 files changed, 0 insertions, 0 deletions