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X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Hello, syzbot found the following issue on: HEAD commit: 950b879b7f02 riscv: Fixup race condition on PG_dcache_clea.. 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=137aaec0c80000 kernel config: https://syzkaller.appspot.com/x/.config?x=b3cd714c8e9a6e01 dashboard link: https://syzkaller.appspot.com/bug?extid=42670398d6ddb118138f compiler: riscv64-linux-gnu-gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: riscv64 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+42670398d6ddb118138f@syzkaller.appspotmail.com rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-...0: (1 GPs behind) idle=36ec/1/0x4000000000000000 softirq=6589/6590 fqs=9960 (detected by 1, t=30504 jiffies, g=14713, q=4 ncpus=2) Task dump for CPU 0: task:cmp state:R running task stack:0 pid:2746 ppid:2744 flags:0x00000008 Call Trace: [] context_switch kernel/sched/core.c:5244 [inline] [] __schedule+0x624/0x1254 kernel/sched/core.c:6555 rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-...0: (1 GPs behind) idle=36ec/1/0x4000000000000000 softirq=6589/6590 fqs=28261 (detected by 1, t=122009 jiffies, g=14713, q=4 ncpus=2) Task dump for CPU 0: task:cmp state:R running task stack:0 pid:2746 ppid:2744 flags:0x00000008 Call Trace: [] context_switch kernel/sched/core.c:5244 [inline] [] __schedule+0x624/0x1254 kernel/sched/core.c:6555 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv