From: Miklos Szeredi <mszeredi@redhat.com>
To: Amir Goldstein <amir73il@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
Greg KH <gregkh@linuxfoundation.org>
Subject: Re: [PATCH 03/16] vfs: don't evict uninitialized inode
Date: Mon, 30 Jul 2018 09:41:33 +0200 [thread overview]
Message-ID: <CAOssrKfmR0beT4dXjg1dn6DBsPbmGBpS5xHpG9QtAAEgMWo_Xg@mail.gmail.com> (raw)
In-Reply-To: <CAOQ4uxgOLEpaZ=UwA_CG6CzYbsJBPV4unEV9D5mXrooLXO0+0w@mail.gmail.com>
On Mon, Jul 30, 2018 at 7:09 AM, Amir Goldstein <amir73il@gmail.com> wrote:
> On Mon, Jul 30, 2018 at 1:04 AM, Al Viro <viro@zeniv.linux.org.uk> wrote:
>> From: Miklos Szeredi <mszeredi@redhat.com>
>>
>> iput() ends up calling ->evict() on new inode, which is not yet initialized
>> by owning fs. So use destroy_inode() instead.
>>
>> Add to sb->s_inodes list only if inode is not in I_CREATING state (meaning
>> that it wasn't allocated with new_inode(), which already does the
>> insertion).
>>
>> Reported-by: Al Viro <viro@zeniv.linux.org.uk>
>> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
>> Fixes: 80ea09a002bf ("vfs: factor out inode_insert5()")
>
> Backport hint: this patch depends on the patch ("new primitive:
> discard_new_inode()") currently commit 22dc9a168272 in Al's for-next.
>
> Still trying to figure out the best format to channel this information to
> stable maintainers...
Why are we talking about stable? This regression was introduced in
4.18-rc1, spotted by Al *and* reported by testers. It needs to be
fixed in one way or other in 4.18.
I've nothing against applying "new primitive: discard_new_inode() now
+ this patch, but if it is deemed too risky at this point, we could
just revert the buggy commit 80ea09a002bf ("vfs: factor out
inode_insert5()") and its dependencies.
Thanks,
Miklos
next prev parent reply other threads:[~2018-07-30 7:41 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-29 22:03 [PATCHES][RFC] icache-related stuff Al Viro
2018-07-29 22:04 ` [PATCH 01/16] nfs_instantiate(): prevent multiple aliases for directory inode Al Viro
2018-07-29 22:04 ` [PATCH 02/16] new primitive: discard_new_inode() Al Viro
2018-07-29 22:04 ` [PATCH 03/16] vfs: don't evict uninitialized inode Al Viro
2018-07-30 5:09 ` Amir Goldstein
2018-07-30 7:41 ` Miklos Szeredi [this message]
2018-08-16 16:29 ` Amir Goldstein
2018-08-24 6:47 ` Amir Goldstein
2018-10-08 6:41 ` Miklos Szeredi
2018-10-08 13:23 ` Greg KH
2018-07-29 22:04 ` [PATCH 04/16] btrfs: switch to discard_new_inode() Al Viro
2018-08-01 15:25 ` David Sterba
2018-07-29 22:04 ` [PATCH 05/16] ufs: " Al Viro
2018-07-29 22:04 ` [PATCH 06/16] udf: " Al Viro
2018-07-29 22:04 ` [PATCH 07/16] ext2: make sure that partially set up inodes won't be returned by ext2_iget() Al Viro
2018-07-29 22:04 ` [PATCH 08/16] btrfs: btrfs_iget() never returns an is_bad_inode() inode Al Viro
2018-07-30 8:13 ` Nikolay Borisov
2018-07-29 22:04 ` [PATCH 09/16] btrfs: IS_ERR(p) && PTR_ERR(p) == n is a weird way to spell p == ERR_PTR(n) Al Viro
2018-07-30 8:06 ` Nikolay Borisov
2018-07-29 22:04 ` [PATCH 10/16] kill d_instantiate_no_diralias() Al Viro
2018-07-29 22:04 ` [PATCH 11/16] jfs: switch to discard_new_inode() Al Viro
2018-07-29 22:04 ` [PATCH 12/16] new helper: inode_fake_hash() Al Viro
2018-07-29 22:04 ` [PATCH 13/16] btrfs: lift make_bad_inode() into btrfs_iget() Al Viro
2018-07-30 8:15 ` Nikolay Borisov
2018-07-29 22:04 ` [PATCH 14/16] btrfs: simplify btrfs_iget() Al Viro
2018-07-30 8:17 ` Nikolay Borisov
2018-07-29 22:04 ` [PATCH 15/16] adfs: don't put inodes into icache Al Viro
2018-07-29 22:04 ` [PATCH 16/16] jfs: don't bother with make_bad_inode() in ialloc() Al Viro
2018-07-30 21:35 ` [PATCHES][RFC] icache-related stuff Linus Torvalds
2018-08-01 15:25 ` David Sterba
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