Re: [syzbot] [integrity] [overlayfs] possible deadlock in mnt_want_write (2)

[Mimi Zohar <zohar@xxxxxxxxxxxxx>]

On Thu, 2023-10-05 at 13:26 +0300, Amir Goldstein wrote:
> On Thu, Oct 5, 2023 at 12:59 PM syzbot
> <syzbot+b42fe626038981fb7bfa@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
> >
> > Hello,
> >
> > syzbot tried to test the proposed patch but the build/boot failed:
> 
> My mistake. Please try again:
> 
> #syz test: https://github.com/amir73il/linux ima-ovl-fix

Thanks, Amir.   "mutext_init(&iint->mutex); moved, but the status
initialization lines 161-166 were dropped.   They're needed by IMA-
appraisal for signature verification.

        iint->ima_file_status = INTEGRITY_UNKNOWN;
	iint->ima_mmap_status = INTEGRITY_UNKNOWN;
	iint->ima_bprm_status = INTEGRITY_UNKNOWN;
	iint->ima_read_status = INTEGRITY_UNKNOWN;
	iint->ima_creds_status = INTEGRITY_UNKNOWN;
	iint->evm_status = INTEGRITY_UNKNOWN;