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Re: [PATCH v2 2/2] x86: Check return values from early_ioremap calls
- To: Ross Philipson <ross.philipson@xxxxxxxxxx>
- From: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
- Date: Thu, 10 Nov 2022 19:07:12 +0100
- Cc: linux-kernel@xxxxxxxxxxxxxxx, x86@xxxxxxxxxx, dpsmith@xxxxxxxxxxxxxxxxxxxx, tglx@xxxxxxxxxxxxx, mingo@xxxxxxxxxx, bp@xxxxxxxxx, hpa@xxxxxxxxx, luto@xxxxxxxxxxxxxx, dave.hansen@xxxxxxxxxxxxxxx, kanth.ghatraju@xxxxxxxxxx, trenchboot-devel@xxxxxxxxxxxxxxxx, jailhouse-dev@xxxxxxxxxxxxxxxx, jan.kiszka@xxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, jgross@xxxxxxxx, boris.ostrovsky@xxxxxxxxxx, andrew.cooper3@xxxxxxxxxx
- Delivery-date: Thu, 10 Nov 2022 18:07:59 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On Thu, Nov 10, 2022 at 03:45:21PM +0000, Ross Philipson wrote:
> On allocation failures, panic() was used since this seemed
> to be the action taken on other failures in the modules
> touched by this patch.
How is the panic() more useful than the obvious NULL deref that also
splats?
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