Re: [syzbot] WARNING in __perf_install_in_context
From: Peter Zijlstra <peterz@infradead.org>
Date: 2021-05-17 11:28:15
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On Mon, May 17, 2021 at 03:56:22AM -0700, syzbot wrote:
Hello, syzbot found the following issue on: HEAD commit: 18a3c5f7 Merge tag 'for_linus' of git://git.kernel.org/pub.. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes console output: https://syzkaller.appspot.com/x/log.txt?x=1662c153d00000 kernel config: https://syzkaller.appspot.com/x/.config?x=b8ac1fe5995f69d7 dashboard link: https://syzkaller.appspot.com/bug?extid=0fb24f56fa707081e4f2 userspace arch: riscv64 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+0fb24f56fa707081e4f2@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 1 PID: 8643 at kernel/events/core.c:2781 __perf_install_in_context+0x1c0/0x47c kernel/events/core.c:2781 Modules linked in: CPU: 1 PID: 8643 Comm: syz-executor.0 Not tainted 5.12.0-rc8-syzkaller-00011-g18a3c5f7abfd #0 Hardware name: riscv-virtio,qemu (DT)
How serious should I take this thing? ARM64 and x86_64 don't show these errors.