Re: UBSan: Undefined Behavior in itimer_callout

[syzbot]

Hello,

syzbot tried to test the proposed patch but the build/boot failed:

sys/kern/kern_time.c:863:6: error: implicit declaration of function 'timespecaddok'; did you mean 'timespecadd'? [-Werror=implicit-function-declaration]
ERROR: Failed to make all in "sys/arch/amd64/compile/obj/GENERIC_SYZKALLER"


Tested on:

commit: 76664987 Use aprint_*(9) for device attach messages.
git tree: https://github.com/NetBSD/src trunk
dashboard link: https://syzkaller.appspot.com/bug?extid=93cef6090844ec304cde
compiler: g++ (Debian 10.2.1-6) 10.2.1 20210110
patch: https://syzkaller.appspot.com/x/patch.diff?x=12e5464c080000

[syzbot]

Hello,

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

Reported-and-tested-by: syzbot+93cef6...@syzkaller.appspotmail.com

Tested on:

commit: 76664987 Use aprint_*(9) for device attach messages.
git tree: https://github.com/NetBSD/src

console output: https://syzkaller.appspot.com/x/log.txt?x=131ebf74080000
kernel config: https://syzkaller.appspot.com/x/.config?x=1420f906d33d9f1f

dashboard link: https://syzkaller.appspot.com/bug?extid=93cef6090844ec304cde
compiler: g++ (Debian 10.2.1-6) 10.2.1 20210110

patch: https://syzkaller.appspot.com/x/patch.diff?x=17cb7774080000

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