ovl: fix getcwd() failure after unsuccessful rmdir

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commit ce9113bbcb upstream.

ovl_remove_upper() should do d_drop() only after it successfully
removes the dir, otherwise a subsequent getcwd() system call will
fail, breaking userspace programs.

This is to fix: https://bugzilla.kernel.org/show_bug.cgi?id=110491

Signed-off-by: Rui Wang <rui.y.wang@intel.com>
Reviewed-by: Konstantin Khlebnikov <koct9i@gmail.com>
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Rui Wang 2016-01-08 23:09:59 +08:00 • committed by Greg Kroah-Hartman

parent b3600dd647

commit 2f639e2e95

1 changed files with 2 additions and 1 deletions

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fs/overlayfs/dir.c

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