[merged mm-nonmm-stable] kernel-panic-mark-init_taint_buf-as-__initdata-and-panic-instead-of-warning-in-alloc_taint_buf.patch removed from -mm tree

[merged mm-nonmm-stable] kernel-panic-mark-init_taint_buf-as-__initdata-and-panic-instead-of-warning-in-alloc_taint_buf.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: kernel/panic: mark init_taint_buf as __initdata and panic instead of warning in alloc_taint_buf()
has been removed from the -mm tree.  Its filename was
     kernel-panic-mark-init_taint_buf-as-__initdata-and-panic-instead-of-warning-in-alloc_taint_buf.patch

This patch was dropped because it was merged into the mm-nonmm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Rio <rioo.tsukatsukii@gmail.com>
Subject: kernel/panic: mark init_taint_buf as __initdata and panic instead of warning in alloc_taint_buf()
Date: Mon, 23 Feb 2026 09:29:14 +0530

However there's a convention of assuming that __init-time allocations
cannot fail.  Because if a kmalloc() were to fail at this time, the kernel
is hopelessly messed up anyway.  So simply panic() if that kmalloc failed,
then make that 350-byte buffer __initdata.

Link: https://lkml.kernel.org/r/20260223035914.4033-1-rioo.tsukatsukii@gmail.com
Signed-off-by: Rio <rioo.tsukatsukii@gmail.com>
Cc: Joel Granados <joel.granados@kernel.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Wang Jinchao <wangjinchao600@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 kernel/panic.c |   10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

--- a/kernel/panic.c~kernel-panic-mark-init_taint_buf-as-__initdata-and-panic-instead-of-warning-in-alloc_taint_buf
+++ a/kernel/panic.c
@@ -865,8 +865,8 @@ static void print_tainted_seq(struct seq
  */
 #define INIT_TAINT_BUF_MAX 350
 
-static char init_taint_buf[INIT_TAINT_BUF_MAX];
-static char *taint_buf = init_taint_buf;
+static char init_taint_buf[INIT_TAINT_BUF_MAX] __initdata;
+static char *taint_buf __refdata = init_taint_buf;
 static size_t taint_buf_size = INIT_TAINT_BUF_MAX;
 
 static __init int alloc_taint_buf(void)
@@ -887,11 +887,7 @@ static __init int alloc_taint_buf(void)
 	buf = kmalloc(size, GFP_KERNEL);
 
 	if (!buf) {
-		/* Allocation may fail; this warning explains possibly
-		 * truncated taint strings
-		 */
-		pr_warn_once("taint string buffer allocation failed, using fallback buffer\n");
-		return 0;
+		panic("Failed to allocate taint string buffer");
 	}
 
 	taint_buf = buf;
_

Patches currently in -mm which might be from rioo.tsukatsukii@gmail.com are