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| author | Jeremy Kerr <jk@ozlabs.org> | 2020-05-05 12:12:50 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-06-22 09:05:15 +0200 |
| commit | a8696209ca848f38f0ab6d22d9636479a0dfea2c (patch) | |
| tree | 7b1fabe1b62855d946fbe0c0a39d4bc4d15da0b0 /fs/xfs | |
| parent | 1ac03c4b21aa3a177128785cc08ca1127390be05 (diff) | |
powerpc/spufs: fix copy_to_user while atomic
[ Upstream commit 88413a6bfbbe2f648df399b62f85c934460b7a4d ]
Currently, we may perform a copy_to_user (through
simple_read_from_buffer()) while holding a context's register_lock,
while accessing the context save area.
This change uses a temporary buffer for the context save area data,
which we then pass to simple_read_from_buffer.
Includes changes from Christoph Hellwig <hch@lst.de>.
Fixes: bf1ab978be23 ("[POWERPC] coredump: Add SPU elf notes to coredump.")
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
[hch: renamed to function to avoid ___-prefixes]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'fs/xfs')
0 files changed, 0 insertions, 0 deletions