v9fs_dir_readdir: fix double-free on p9stat_read error

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commit 81c99089bc upstream.

p9stat_read will call p9stat_free on error, we should only free the
struct content on success.

There also is no need to "p9stat_init" st as the read function will
zero the whole struct for us anyway, so clean up the code a bit while
we are here.

Link: http://lkml.kernel.org/r/1535410108-20650-1-git-send-email-asmadeus@codewreck.org
Signed-off-by: Dominique Martinet <dominique.martinet@cea.fr>
Reported-by: syzbot+d4252148d198410b864f@syzkaller.appspotmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Dominique Martinet 2018-08-27 15:12:05 +09:00 • committed by Greg Kroah-Hartman

parent 9f9e2bd0bb

commit 829567dd91

1 changed files with 0 additions and 11 deletions

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fs/9p/vfs_dir.c

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