]> www.infradead.org Git - users/jedix/linux-maple.git/commit
Revert "fuse: move initialization of fuse_file to fuse_writepages() instead of in...
authorMiklos Szeredi <mszeredi@redhat.com>
Mon, 21 Oct 2024 08:02:51 +0000 (10:02 +0200)
committerMiklos Szeredi <mszeredi@redhat.com>
Mon, 21 Oct 2024 08:02:51 +0000 (10:02 +0200)
commit184429a17f8ffc9e188dee9a4459165014025e71
tree9c4e1eb7eb68dfc6389e673bd3683ea3131242c1
parent20121d3f58f06e977ca43eb6efe1fb23b1d2f6d9
Revert "fuse: move initialization of fuse_file to fuse_writepages() instead of in callback"

This reverts commit 672c3b7457fcee9656c36a29a4b21ec4a652433e.

fuse_writepages() might be called with no dirty pages after all writable
opens were closed.  In this case __fuse_write_file_get() will return NULL
which will trigger the WARNING.

The exact conditions under which this is triggered is unclear and syzbot
didn't find a reproducer yet.

Reported-by: syzbot+217a976dc26ef2fa8711@syzkaller.appspotmail.com
Link: https://lore.kernel.org/all/CAJnrk1aQwfvb51wQ5rUSf9N8j1hArTFeSkHqC_3T-mU6_BCD=A@mail.gmail.com/
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
fs/fuse/file.c