Re: [syzbot] WARNING in io_sync_cancel

syzbot
2022-12-21T16:10:35Z

Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
INFO: rcu detected stall in corrupted

rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P5778 } 2634 jiffies s: 2893 root: 0x0/T
rcu: blocking rcu_node structures (internal RCU debug):

Tested on:

commit: 071531e9 io_uring/cancel: mark task running before re-..
git tree: git://git.kernel.dk/linux.git io_uring-6.2
console output: https://syzkaller.appspot.com/x/log.txt?x=13042ae8480000
kernel config: https://syzkaller.appspot.com/x/.config?x=2edd87fe5cbdf43f
dashboard link: https://syzkaller.appspot.com/bug?extid=7df055631cd1be4586fd
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2

Note: no patches were applied.