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Xingjing DengandGreg Kroah-Hartman
13f2354ee1
[ Upstream commitb9d21c32dc] In conf_askvalue(), the 'def' argument (retrieved via sym_get_string_value) can be NULL. While current call sites ensure that 'def' is valid, calling printf("%s\n", def) is technically undefined behavior and could lead to a segmentation fault on certain libc implementations if the function were called with a NULL pointer in the future. Improve the robustness of conf_askvalue() by providing an empty string as a fallback. Additionally, remove the redundant re-initialization of the 'line' buffer inside the !sym_is_changeable(sym) block, as it is already properly initialized at the function entry. Fixes:1da177e4c3("Linux-2.6.12-rc2") Signed-off-by: Xingjing Deng <micro6947@gmail.com> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Link: https://patch.msgid.link/20260306021709.27068-1-micro6947@gmail.com Signed-off-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>