linux-kernel - linux-next: build failure after merge of the device-mapper tree

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Date:   Fri, 23 Jun 2023 14:30:11 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Alasdair G Kergon <agk@...hat.com>,
        Mike Snitzer <snitzer@...nel.org>
Cc:     Demi Marie Obenour <demi@...isiblethingslab.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: linux-next: build failure after merge of the device-mapper tree

Hi all,

After merging the device-mapper tree, today's linux-next build (i386
defconfig) failed like this:

In file included from include/linux/kernel.h:30,
                 from arch/x86/include/asm/percpu.h:27,
                 from arch/x86/include/asm/current.h:10,
                 from include/linux/sched.h:12,
                 from include/linux/kthread.h:6,
                 from drivers/md/dm-core.h:13,
                 from drivers/md/dm-ioctl.c:9:
drivers/md/dm-ioctl.c: In function 'next_target':
include/linux/kern_levels.h:5:25: error: format '%lu' expects argument of type 'long unsigned int', but argument 3 has type 'unsigned int' [-Werror=format=]
    5 | #define KERN_SOH        "\001"          /* ASCII Start Of Header */
      |                         ^~~~~~
include/linux/printk.h:427:25: note: in definition of macro 'printk_index_wrap'
  427 |                 _p_func(_fmt, ##__VA_ARGS__);                           \
      |                         ^~~~
include/linux/printk.h:498:9: note: in expansion of macro 'printk'
  498 |         printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
      |         ^~~~~~
include/linux/kern_levels.h:11:25: note: in expansion of macro 'KERN_SOH'
   11 | #define KERN_ERR        KERN_SOH "3"    /* error conditions */
      |                         ^~~~~~~~
include/linux/printk.h:498:16: note: in expansion of macro 'KERN_ERR'
  498 |         printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
      |                ^~~~~~~~
include/linux/device-mapper.h:626:25: note: in expansion of macro 'pr_err'
  626 | #define DMERR(fmt, ...) pr_err(DM_FMT(fmt), ##__VA_ARGS__)
      |                         ^~~~~~
drivers/md/dm-ioctl.c:1421:17: note: in expansion of macro 'DMERR'
 1421 |                 DMERR("Next dm_target_spec (offset %u) is not %lu-byte aligned",
      |                 ^~~~~
cc1: all warnings being treated as errors

Caused by commit

  5df1daff2cc6 ("dm ioctl: Check dm_target_spec is sufficiently aligned")

I have applied the following patch for today:

From: Stephen Rothwell <sfr@...b.auug.org.au>
Date: Fri, 23 Jun 2023 14:24:29 +1000
Subject: [PATCH] fix up for "dm ioctl: Check dm_target_spec is sufficiently aligned"

Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
---
 drivers/md/dm-ioctl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c
index 5f0b641538d8..8b480d7825fe 100644
--- a/drivers/md/dm-ioctl.c
+++ b/drivers/md/dm-ioctl.c
@@ -1418,7 +1418,7 @@ static int next_target(struct dm_target_spec *last, uint32_t next, const char *e
 	}
 
 	if (next % __alignof__(struct dm_target_spec)) {
-		DMERR("Next dm_target_spec (offset %u) is not %lu-byte aligned",
+		DMERR("Next dm_target_spec (offset %u) is not %zu-byte aligned",
 		      next, __alignof__(struct dm_target_spec));
 		return -EINVAL;
 	}
-- 
2.39.2

-- 
Cheers,
Stephen Rothwell

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