Re: KASAN: use-after-free Read in mnt_warn_timestamp_expiry

From: Al Viro
Date: Wed Oct 16 2019 - 22:37:43 EST


On Wed, Oct 16, 2019 at 07:27:05PM -0700, Eric Biggers wrote:

> How about the following?
>
> pr_warn("%s filesystem being %s at %s supports timestamps until %04ld (0x%llx)\n",
> sb->s_type->name,
> is_mounted(mnt) ? "remounted" : "mounted",
> mntpath,
> tm.tm_year+1900, (unsigned long long)sb->s_time_max);
>
> I think more people would understand "remounted" than "reconfigured". Also,
> is_mounted(mnt) seems like a better choice than mnt_has_parent(real_mount(mnt)).

Works for me(tm). Care to fold that into your patch and resend?