Re: [syzbot] [batman?] INFO: rcu detected stall in rtnl_newlink (3)

Re: [syzbot] [batman?] INFO: rcu detected stall in rtnl_newlink (3)

[syzbot]

syzbot suspects this issue was fixed by commit:

commit e739718444f7bf2fa3d70d101761ad83056ca628
Author: Kuniyuki Iwashima <kuniyu@amazon.com>
Date:   Sat Jul 29 00:07:05 2023 +0000

    net/sched: taprio: Limit TCA_TAPRIO_ATTR_SCHED_CYCLE_TIME to INT_MAX.

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=15b26a4d680000
start commit:   d528014517f2 Revert ".gitignore: ignore *.cover and *.mbx"
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=d576750da57ebbb5
dashboard link: https://syzkaller.appspot.com/bug?extid=afb3084a933aa2bdacc6
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15849d08a80000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=13184990a80000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: net/sched: taprio: Limit TCA_TAPRIO_ATTR_SCHED_CYCLE_TIME to INT_MAX.

For information about bisection process see: https://goo.gl/tpsmEJ#bisection

Re: [syzbot] [batman?] INFO: rcu detected stall in rtnl_newlink (3)

[syzbot]

Hello,

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

Reported-and-tested-by: syzbot+afb3084a933aa2bdacc6@syzkaller.appspotmail.com

Tested on:

commit:         d5280145 Revert ".gitignore: ignore *.cover and *.mbx"
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
console output: https://syzkaller.appspot.com/x/log.txt?x=13d5aab1680000
kernel config:  https://syzkaller.appspot.com/x/.config?x=53de8828edb29baf
dashboard link: https://syzkaller.appspot.com/bug?extid=afb3084a933aa2bdacc6
compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
patch:          https://syzkaller.appspot.com/x/patch.diff?x=17530ab1680000

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