Re: [syzbot] [mm?] KCSAN: data-race in mprotect_fixup / try_to_migrate_one

From: Jann Horn
Date: Wed Feb 05 2025 - 10:20:47 EST


On Wed, Feb 5, 2025 at 4:07 PM Lorenzo Stoakes
<lorenzo.stoakes@xxxxxxxxxx> wrote:
> On Wed, Feb 05, 2025 at 03:41:20AM -0800, syzbot wrote:
> > read to 0xffff888114b41700 of 8 bytes by task 6418 on cpu 0:
> > try_to_migrate_one+0xb5a/0x12e0 mm/rmap.c:2321
>
> Be super nice if these reports could show the line of code!
>
> It's:
>
> if (vma->vm_flags & VM_LOCKED)

fwiw if you follow the "dashboard link" in the bug report, you'll get
a version of this where the source locations are clickable links to
git.kernel.org at the right commit.

Also note the "syzbot engineers can be reached at
syzkaller@xxxxxxxxxxxxxxxx" at the bottom of the message.