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SubjectRe: [PATCH v2] kconfig: Clear "written" flag to avoid data loss
On Sat, Aug 3, 2019 at 7:02 PM M. Vefa Bicakci <> wrote:
> Prior to this commit, starting nconfig, xconfig or gconfig, and saving
> the .config file more than once caused data loss, where a .config file
> that contained only comments would be written to disk starting from the
> second save operation.
> This bug manifests itself because the SYMBOL_WRITTEN flag is never
> cleared after the first call to conf_write, and subsequent calls to
> conf_write then skip all of the configuration symbols due to the
> SYMBOL_WRITTEN flag being set.
> This commit resolves this issue by clearing the SYMBOL_WRITTEN flag
> from all symbols before conf_write returns.
> Fixes: 8e2442a5f86e ("kconfig: fix missing choice values in auto.conf")
> Cc: linux-stable <> # 4.19+
> Signed-off-by: M. Vefa Bicakci <>

Applied to linux-kbuild/fixes.

Best Regards
Masahiro Yamada

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