On 8/15/19 12:51 AM, Will Deacon wrote:
Hi Bart, On Sat, Aug 10, 2019 at 05:24:06PM -0700, syzbot wrote:syzbot has found a reproducer for the following crash on: HEAD commit: 451577f3 Merge tag 'kbuild-fixes-v5.3-3' of git://git.kern.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=120850a6600000 kernel config: https://syzkaller.appspot.com/x/.config?x=2031e7d221391b8a dashboard link: https://syzkaller.appspot.com/bug?extid=bd3bba6ff3fcea7a6ec6 compiler: clang version 9.0.0 (/home/glider/llvm/clang 80fee25776c2fb61e74c1ecb1a523375c2500b69) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=130ffe4a600000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17137d2c600000 The bug was bisected to: commit a0b0fd53e1e67639b303b15939b9c653dbe7a8c4 Author: Bart Van Assche <bvanassche@xxxxxxx> Date: Thu Feb 14 23:00:46 2019 +0000 locking/lockdep: Free lock classes that are no longer in use bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=152f6a9da00000 final crash: https://syzkaller.appspot.com/x/report.txt?x=172f6a9da00000 console output: https://syzkaller.appspot.com/x/log.txt?x=132f6a9da00000I know you don't think much to these reports, but please could you have a look (even if it's just to declare it a false positive)?
Hi Will, Had you already noticed the following message? https://lore.kernel.org/bpf/d76d7a63-7854-e92d-30cb-52546d333ffe@xxxxxxxxxxxxx/From that message: "Hey Bart, don't think it's related in any way to your commit. I'll allocate some time on working on this issue today, thanks!"
Bart.
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