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| author | Jeremy Kerr <jk@ozlabs.org> | 2020-05-05 12:12:50 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-06-20 10:23:21 +0200 |
| commit | cbd4cbc1e68408305476174479579276accd3595 (patch) | |
| tree | 468bd20cda38b5c9a653598cb9c026073e934549 /scripts/objdiff | |
| parent | 7bd9c798d971d4c9cca25d897ac368145e6f51bb (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 'scripts/objdiff')
0 files changed, 0 insertions, 0 deletions