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unread,Feb 14, 2023, 7:24:45 PM2/14/23Sign in to reply to author
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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+426703...@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:
[<ffffffff834348b8>] context_switch kernel/sched/core.c:5244 [inline]
[<ffffffff834348b8>] __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:
[<ffffffff834348b8>] context_switch kernel/sched/core.c:5244 [inline]
[<ffffffff834348b8>] __schedule+0x624/0x1254 kernel/sched/core.c:6555
---
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