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Date: Wed, 18 May 2022 01:10:20 +0000 From: Al Viro <viro@...iv.linux.org.uk> To: syzbot <syzbot+5b1e53987f858500ec00@...kaller.appspotmail.com> Cc: hdanton@...a.com, linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com Subject: Re: [syzbot] WARNING in mntput_no_expire (3) On Wed, May 18, 2022 at 12:59:46AM +0000, Al Viro wrote: > On Tue, May 17, 2022 at 10:58:15PM +0000, Al Viro wrote: > > On Tue, May 17, 2022 at 03:49:07PM -0700, syzbot wrote: > > > Hello, > > > > > > syzbot has tested the proposed patch but the reproducer is still triggering an issue: > > > WARNING in mntput_no_expire > > > > Obvious question: which filesystem it is? > > FWIW, can't reproduce here - at least not with C reproducer + > -rc7^ kernel + .config from report + debian kvm image (bullseye, > with systemd shite replaced with sysvinit, which might be relevant). > > In case systemd-specific braindamage is needed to reproduce it... > Hell knows; at least mount --make-rshared / doesn't seem to suffice. ... doesn't reproduce with genuine systemd either. FWIW, 4-way SMP setup here.
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