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| author | Jeremy Kerr <jk@ozlabs.org> | 2020-05-05 13:12:50 +0300 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2020-05-05 23:46:09 +0300 |
| commit | 88413a6bfbbe2f648df399b62f85c934460b7a4d (patch) | |
| tree | 638fe85310e0f969f7ed3c1eaabb4c842ef8b21b /arch/powerpc/platforms/cell/cpufreq_spudemand.c | |
| parent | 8f3d9f354286745c751374f5f1fcafee6b3f3136 (diff) | |
| download | linux-88413a6bfbbe2f648df399b62f85c934460b7a4d.tar.xz | |
powerpc/spufs: fix copy_to_user while atomic
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>
Diffstat (limited to 'arch/powerpc/platforms/cell/cpufreq_spudemand.c')
0 files changed, 0 insertions, 0 deletions