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Date: Sat, 21 Apr 2018 19:26:52 +0900 From: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp> To: ebiederm@...ssion.com, dvyukov@...gle.com Cc: syzbot+84371b6062cb639d797e@...kaller.appspotmail.com, syzkaller-bugs@...glegroups.com, viro@...IV.linux.org.uk, linux-fsdevel@...r.kernel.org, linux-mm@...ck.org, netdev@...r.kernel.org Subject: Re: WARNING: refcount bug in should_fail Eric W. Biederman wrote: > Al Viro <viro@...IV.linux.org.uk> writes: > > > On Mon, Apr 02, 2018 at 10:59:34PM +0100, Al Viro wrote: > > > >> FWIW, I'm going through the ->kill_sb() instances, fixing that sort > >> of bugs (most of them preexisting, but I should've checked instead > >> of assuming that everything's fine). Will push out later tonight. > > > > OK, see vfs.git#for-linus. Caught: 4 old bugs (allocation failure > > in fill_super oopses ->kill_sb() in hypfs, jffs2 and orangefs resp. > > and double-dput in late failure exit in rpc_fill_super()) > > and 5 regressions from register_shrinker() failure recovery. > > One issue with your vfs.git#for-linus branch. > > It is missing Fixes tags and Cc: stable on those patches. > As the bug came in v4.15 those tags would really help the stable > maintainers get the recent regression fixes applied. OK. The patch was sent to linux.git as commit 8e04944f0ea8b838. #syz fix: mm,vmscan: Allow preallocating memory for register_shrinker().
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