On Fri, Mar 25, 2022 at 3:47 AM Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote: > > On Thu, Mar 24, 2022 at 12:45 PM Linus Torvalds > <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote: > > > > On Thu, Mar 24, 2022 at 12:41 PM syzbot > > <syzbot+f8c45ccc7d5d45fc5965@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > > > > > > syzbot has tested the proposed patch and the reproducer did not trigger any issue: > > > > Heh, well that's unfortunate. > > > > I think the issue is that it triggered a new BUG() that didn't match > > the previous NULL pointer dereference, so it thinks things are > > "fixed". > > Oh, no, it's because it used the truncated patch that didn't do anything: > > > patch: https://syzkaller.appspot.com/x/patch.diff?x=1208043d700000 > > and maybe (due to the racy nature) nothing actually happened. > It is not easy to reproduce. I'm also trying to reproduce locally. #syz test: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git 5abc1e37afa0335c52608d640fd30910b2eeda21
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