Re: [syzbot] [kernel?] WARNING in __ioremap_caller

[Dave Hansen]

On 9/4/26 15:02, syzbot wrote:
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16a09215580000

Heh, that's a fun reproducer as usual. Looks like it's mmap()'ing some
PCI device resource the accessing the mmap() with /proc/$pid/mem. The
thing that's weird is how a PCI device resource ends up pointing at
system RAM.

/proc/iomem might be enlightening as would 'lspci -vvv'. But it makes me
wonder if the PCI device enumeration inside the VM is broken or something.