Re: KASAN: slab-out-of-bounds in hfsplus_bnode_read+0x268/0x290

[Viacheslav Dubeyko]

On Mon, 2025-07-28 at 15:40 +0800, Chenzhi Yang wrote:
> > Hi Slava,
> > Thank you for taking your time.
> 
> > We originally obtained this issue's syz and C reproducers using Syzkaller's repro tool (refer to the URL below). The issue was triggered when we ran the syz reproducer through Syzkaller.
> 
> > Url: https://github.com/google/syzkaller/blob/master/docs/reproducing_crashes.md  
> 
> > Syzkaller also provides syz-execprog to verify whether the C program can trigger the issue. We are currently in the process of verifying whether the C reproducer can reliably reproduce the issue. Please allow us some time to complete this verification.
> 
> > We'll follow up with you once we have more concrete results.
> 
> > Best regards,
> > Kun
> 
> Hi Kun,
> 
> Just wanted to follow up, how is the verification of the C reproducer going?
> If it does reliably reproduce the issue, could you also let us know under what
> scenario or environment it occurs?
> 

I already shared the patch [1] for this issue.

Thanks,
Slava.

[1]
https://lore.kernel.org/linux-fsdevel/20250703214804.244077-1-slava@xxxxxxxxxxx/