Re: [syzbot] possible deadlock in bpf_trace_printk

[syzbot]

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-and-tested-by: syzbot+c49e17557ddb5725583d@xxxxxxxxxxxxxxxxxxxxxxxxx

Tested on:

commit:         d678cbd2 xsk: Fix handling of invalid descriptors in X..
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git
console output: https://syzkaller.appspot.com/x/log.txt?x=13743f27f00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=fc5a30a131480a80
dashboard link: https://syzkaller.appspot.com/bug?extid=c49e17557ddb5725583d
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
patch:          https://syzkaller.appspot.com/x/patch.diff?x=16922173f00000

Note: testing is done by a robot and is best-effort only.