Re: [syzbot] general protection fault in iomap_dio_bio_iter

syzbot
2023-02-08T03:42:49Z

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: { P5566 } 2654 jiffies s: 2877 root: 0x0/T
rcu: blocking rcu_node structures (internal RCU debug):

Tested on:

commit: 986f457b block: convert bio_map_user_iov to use iov_it..
git tree: https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git iov-extract-20230207
console output: https://syzkaller.appspot.com/x/log.txt?x=1218381f480000
kernel config: https://syzkaller.appspot.com/x/.config?x=6bb1911ff9919df0
dashboard link: https://syzkaller.appspot.com/bug?extid=a4f579527ea6394140a5
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.