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author | Daniel Thompson <daniel.thompson@linaro.org> | 2024-04-24 17:03:38 +0300 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-06-16 14:51:09 +0300 |
commit | 97f51d56973e171f27d7321e8f65e19953b4408c (patch) | |
tree | e0eeeb83544a8345303a194db1853ad62db2dfbb /tools/rcu | |
parent | da1773e15774581f9fb44a6270df8f44fcab96fc (diff) | |
download | linux-97f51d56973e171f27d7321e8f65e19953b4408c.tar.xz |
kdb: Use format-specifiers rather than memset() for padding in kdb_read()
commit c9b51ddb66b1d96e4d364c088da0f1dfb004c574 upstream.
Currently when the current line should be removed from the display
kdb_read() uses memset() to fill a temporary buffer with spaces.
The problem is not that this could be trivially implemented using a
format string rather than open coding it. The real problem is that
it is possible, on systems with a long kdb_prompt_str, to write past
the end of the tmpbuffer.
Happily, as mentioned above, this can be trivially implemented using a
format string. Make it so!
Cc: stable@vger.kernel.org
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Justin Stitt <justinstitt@google.com>
Link: https://lore.kernel.org/r/20240424-kgdb_read_refactor-v3-5-f236dbe9828d@linaro.org
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/rcu')
0 files changed, 0 insertions, 0 deletions