linux-kernel - Re: [PATCH 1/1] mshv: Fix compiler warning about cast converting incompatible function type

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <20260204060832.GC79272@liuwe-devbox-debian-v2.local>
Date: Wed, 4 Feb 2026 06:08:32 +0000
From: Wei Liu <wei.liu@...nel.org>
To: Naman Jain <namjain@...ux.microsoft.com>
Cc: mhklinux@...look.com, kys@...rosoft.com, haiyangz@...rosoft.com,
	wei.liu@...nel.org, decui@...rosoft.com, longli@...rosoft.com,
	linux-hyperv@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] mshv: Fix compiler warning about cast converting
 incompatible function type

On Mon, Jan 19, 2026 at 11:02:01AM +0530, Naman Jain wrote:
> 
> 
> On 1/18/2026 10:32 PM, mhkelley58@...il.com wrote:
> > From: Michael Kelley <mhklinux@...look.com>
> > 
> > In mshv_vtl_sint_ioctl_pause_msg_stream(), the reference to function
> > mshv_vtl_synic_mask_vmbus_sint() is cast to type smp_call_func_t. The
> > cast generates a compiler warning because the function signature of
> > mshv_vtl_synic_mask_vmbus_sint() doesn't match smp_call_func_t.
> > 
> > There's no actual bug here because the mis-matched function signatures
> > are compatible at runtime. Nonetheless, eliminate the compiler warning
> > by changing the function signature of mshv_vtl_synic_mask_vmbus_sint()
> > to match what on_each_cpu() expects. Remove the cast because it is then
> > no longer necessary.
> > 
> > No functional change.
> > 
> > Reported-by: kernel test robot <lkp@...el.com>
> > Closes: https://lore.kernel.org/oe-kbuild-all/202601170352.qbh3EKH5-lkp@intel.com/
> > Signed-off-by: Michael Kelley <mhklinux@...look.com>
[...]
> 
> Reviewed-by: Naman Jain <namjain@...ux.microsoft.com>
> 

Queued.