Messages in this thread | | | Date | Tue, 10 May 2022 15:50:57 +0200 | Subject | Re: [syzbot] INFO: task hung in synchronize_rcu (3) | From | Paolo Bonzini <> |
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On 5/10/22 15:45, Sean Christopherson wrote: >> >> KVM: x86: Don't re-acquire SRCU lock in complete_emulated_io() >> >> bisection log:https://syzkaller.appspot.com/x/bisect.txt?x=16dc2e49f00000 >> start commit: ea4424be1688 Merge tag 'mtd/fixes-for-5.17-rc8' of git://g.. >> git tree: upstream >> kernel config:https://syzkaller.appspot.com/x/.config?x=442f8ac61e60a75e >> dashboard link:https://syzkaller.appspot.com/bug?extid=0c6da80218456f1edc36 >> syz repro:https://syzkaller.appspot.com/x/repro.syz?x=1685af9e700000 >> C reproducer:https://syzkaller.appspot.com/x/repro.c?x=11b09df1700000 >> >> If the result looks correct, please mark the issue as fixed by replying with: >> >> #syz fix: KVM: x86: Don't re-acquire SRCU lock in complete_emulated_io() >> >> For information about bisection process see:https://goo.gl/tpsmEJ#bisection > #syz fix: KVM: x86: Don't re-acquire SRCU lock in complete_emulated_io() >
Are you sure? The hang is in synchronize_*rcu* and the testcase is unrelated to KVM. It seems like the testcase is not 100% reproducible.
Paolo
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