On 08/15, Diogo Jahchan Koike wrote:
> No problem whatsoever.
Thanks. I removed the original patch from -next. Chao, please post a fixed
version.
>
> Thanks,
>
> Em qua., 14 de ago. de 2024, 21:51, Chao Yu <c...@kernel.org> escreveu:
>
> > On 2024/8/15 5:16, Diogo Jahchan Koike wrote:
> > > fix reader lock unreleased in error path.
> >
> > Thank you for catching this, if you don't mind, I'd like to merge it to
> > original patch, since it is still in dev-test branch.
> >
> > Thanks,
> >
> > >
> > > Fixes: 374a8881ce4c ("f2fs: atomic: fix to forbid dio in atomic_file")
> > > Reported-by: syzbot+733300ca0a9baca7e...@syzkaller.appspotmail.com
> > > Closes: https://syzkaller.appspot.com/bug?extid=733300ca0a9baca7e245
> > > Signed-off-by: Diogo Jahchan Koike <djahchanko...@gmail.com>
> > > ---
> > > fs/f2fs/file.c | 4 ++++
> > > 1 file changed, 4 insertions(+)
> > >
> > > diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
> > > index 51f6ffd5f4e2..c9eda5dbd11f 100644
> > > --- a/fs/f2fs/file.c
> > > +++ b/fs/f2fs/file.c
> > > @@ -2172,6 +2172,7 @@ static int f2fs_ioc_start_atomic_write(struct file
> > *filp, bool truncate)
> > > ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
> > > if (ret) {
> > > f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
> > > + f2fs_up_write(&fi->i_gc_rwsem[READ]);
> > > goto out;
> > > }
> > >
> > > @@ -2181,6 +2182,7 @@ static int f2fs_ioc_start_atomic_write(struct file
> > *filp, bool truncate)
> > > pinode = f2fs_iget(inode->i_sb, fi->i_pino);
> > > if (IS_ERR(pinode)) {
> > > f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
> > > + f2fs_up_write(&fi->i_gc_rwsem[READ]);
> > > ret = PTR_ERR(pinode);
> > > goto out;
> > > }
> > > @@ -2189,6 +2191,7 @@ static int f2fs_ioc_start_atomic_write(struct file
> > *filp, bool truncate)
> > > iput(pinode);
> > > if (ret) {
> > > f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
> > > + f2fs_up_write(&fi->i_gc_rwsem[READ]);
> > > goto out;
> > > }
> > >
> > > @@ -2202,6 +2205,7 @@ static int f2fs_ioc_start_atomic_write(struct file
> > *filp, bool truncate)
> > > ret = f2fs_do_truncate_blocks(fi->cow_inode, 0, true);
> > > if (ret) {
> > > f2fs_up_write(&fi->i_gc_rwsem[WRITE]);
> > > + f2fs_up_write(&fi->i_gc_rwsem[READ]);
> > > goto out;
> > > }
> > > }
> >
> >
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