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Date: Thu, 9 Sep 2021 18:25:25 +1000
From: Stephen Rothwell <sfr@...b.auug.org.au>
To: Baokun Li <libaokun1@...wei.com>
Cc: Jens Axboe <axboe@...nel.dk>, Josef Bacik <josef@...icpanda.com>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: linux-next: build failure while building Linus' tree
Hi all,
Building Linus' tree, today's linux-next build (powerpc
ppc6xx_defconfig gcc4.9) failed like this:
ERROR: modpost: "__divdi3" [drivers/block/nbd.ko] undefined!
Caused by commit
fad7cd3310db ("nbd: add the check to prevent overflow in __nbd_ioctl()")
The added check_mul_overflow() call is being passed 64 bit values.
COMPILER_HAS_GENERIC_BUILTIN_OVERFLOW is not set for this build (see
include/linux/overflow.h).
--
Cheers,
Stephen Rothwell
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