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| author | Naveen N Rao <naveen@kernel.org> | 2023-11-23 10:17:05 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-02-05 23:14:14 +0300 |
| commit | 28b8ba8eebf26f66d9f2df4ba550b6b3b136082c (patch) | |
| tree | 450e3610ddd81a9e50607d7d8f362faa18d05f54 /kernel/kexec_file.c | |
| parent | 39ba91d29fdb66e96ef9a7ebd3c700bc93c740b6 (diff) | |
| download | linux-28b8ba8eebf26f66d9f2df4ba550b6b3b136082c.tar.xz | |
powerpc/lib: Validate size for vector operations
[ Upstream commit 8f9abaa6d7de0a70fc68acaedce290c1f96e2e59 ]
Some of the fp/vmx code in sstep.c assume a certain maximum size for the
instructions being emulated. The size of those operations however is
determined separately in analyse_instr().
Add a check to validate the assumption on the maximum size of the
operations, so as to prevent any unintended kernel stack corruption.
Signed-off-by: Naveen N Rao <naveen@kernel.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Build-tested-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20231123071705.397625-1-naveen@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'kernel/kexec_file.c')
0 files changed, 0 insertions, 0 deletions