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| author | Daniel Thompson <[email protected]> | 2020-02-13 15:16:40 +0000 |
|---|---|---|
| committer | Daniel Thompson <[email protected]> | 2020-04-01 16:59:11 +0100 |
| commit | ad99b5105c0823ff02126497f4366e6a8009453e (patch) | |
| tree | 44e3f94cbac26b7e9208a2b4b1cabb30c77acabc /scripts/gcc-plugins/gcc-generate-gimple-pass.h | |
| parent | d228bee8201a7ea77c414f1298b2f572f42c6113 (diff) | |
kdb: Censor attempts to set PROMPT without ENABLE_MEM_READ
Currently the PROMPT variable could be abused to provoke the printf()
machinery to read outside the current stack frame. Normally this
doesn't matter becaues md is already a much better tool for reading
from memory.
However the md command can be disabled by not setting KDB_ENABLE_MEM_READ.
Let's also prevent PROMPT from being modified in these circumstances.
Whilst adding a comment to help future code reviewers we also remove
the #ifdef where PROMPT in consumed. There is no problem passing an
unused (0) to snprintf when !CONFIG_SMP.
argument
Reported-by: Wang Xiayang <[email protected]>
Signed-off-by: Daniel Thompson <[email protected]>
Reviewed-by: Douglas Anderson <[email protected]>
Diffstat (limited to 'scripts/gcc-plugins/gcc-generate-gimple-pass.h')
0 files changed, 0 insertions, 0 deletions