Merge tag 'mm-nonmm-stable-2025-10-02-15-29' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-MM updates from Andrew Morton:

 - "ida: Remove the ida_simple_xxx() API" from Christophe Jaillet
   completes the removal of this legacy IDR API

 - "panic: introduce panic status function family" from Jinchao Wang
   provides a number of cleanups to the panic code and its various
   helpers, which were rather ad-hoc and scattered all over the place

 - "tools/delaytop: implement real-time keyboard interaction support"
   from Fan Yu adds a few nice user-facing usability changes to the
   delaytop monitoring tool

 - "efi: Fix EFI boot with kexec handover (KHO)" from Evangelos
   Petrongonas fixes a panic which was happening with the combination of
   EFI and KHO

 - "Squashfs: performance improvement and a sanity check" from Phillip
   Lougher teaches squashfs's lseek() about SEEK_DATA/SEEK_HOLE. A mere
   150x speedup was measured for a well-chosen microbenchmark

 - plus another 50-odd singleton patches all over the place

* tag 'mm-nonmm-stable-2025-10-02-15-29' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (75 commits)
  Squashfs: reject negative file sizes in squashfs_read_inode()
  kallsyms: use kmalloc_array() instead of kmalloc()
  MAINTAINERS: update Sibi Sankar's email address
  Squashfs: add SEEK_DATA/SEEK_HOLE support
  Squashfs: add additional inode sanity checking
  lib/genalloc: fix device leak in of_gen_pool_get()
  panic: remove CONFIG_PANIC_ON_OOPS_VALUE
  ocfs2: fix double free in user_cluster_connect()
  checkpatch: suppress strscpy warnings for userspace tools
  cramfs: fix incorrect physical page address calculation
  kernel: prevent prctl(PR_SET_PDEATHSIG) from racing with parent process exit
  Squashfs: fix uninit-value in squashfs_get_parent
  kho: only fill kimage if KHO is finalized
  ocfs2: avoid extra calls to strlen() after ocfs2_sprintf_system_inode_name()
  kernel/sys.c: fix the racy usage of task_lock(tsk->group_leader) in sys_prlimit64() paths
  sched/task.h: fix the wrong comment on task_lock() nesting with tasklist_lock
  coccinelle: platform_no_drv_owner: handle also built-in drivers
  coccinelle: of_table: handle SPI device ID tables
  lib/decompress: use designated initializers for struct compress_format
  efi: support booting with kexec handover (KHO)
  ...

lib/Kconfig.debug

@@ -1067,12 +1067,6 @@ config PANIC_ON_OOPS
 
 	  Say N if unsure.
 
-config PANIC_ON_OOPS_VALUE
-	int
-	range 0 1
-	default 0 if !PANIC_ON_OOPS
-	default 1 if PANIC_ON_OOPS
-
 config PANIC_TIMEOUT
 	int "panic timeout"
 	default 0

lib/alloc_tag.c

@@ -9,6 +9,7 @@
 #include <linux/proc_fs.h>
 #include <linux/seq_buf.h>
 #include <linux/seq_file.h>
+#include <linux/string_choices.h>
 #include <linux/vmalloc.h>
 #include <linux/kmemleak.h>
 
@@ -728,7 +729,7 @@ static int __init setup_early_mem_profiling(char *str)
 		}
 		mem_profiling_support = true;
 		pr_info("Memory allocation profiling is enabled %s compression and is turned %s!\n",
-			compressed ? "with" : "without", enable ? "on" : "off");
+			compressed ? "with" : "without", str_on_off(enable));
 	}
 
 	if (enable != mem_alloc_profiling_enabled()) {

lib/btree.c

@@ -653,9 +653,9 @@ int btree_merge(struct btree_head *target, struct btree_head *victim,
 	 * walks to remove a single object from the victim.
 	 */
 	for (;;) {
-		if (!btree_last(victim, geo, key))
+		val = btree_last(victim, geo, key);
+		if (!val)
 			break;
-		val = btree_lookup(victim, geo, key);
 		err = btree_insert(target, geo, key, val, gfp);
 		if (err)
 			return err;

lib/decompress.c

@@ -49,15 +49,15 @@ struct compress_format {
 };
 
 static const struct compress_format compressed_formats[] __initconst = {
-	{ {0x1f, 0x8b}, "gzip", gunzip },
-	{ {0x1f, 0x9e}, "gzip", gunzip },
-	{ {0x42, 0x5a}, "bzip2", bunzip2 },
-	{ {0x5d, 0x00}, "lzma", unlzma },
-	{ {0xfd, 0x37}, "xz", unxz },
-	{ {0x89, 0x4c}, "lzo", unlzo },
-	{ {0x02, 0x21}, "lz4", unlz4 },
-	{ {0x28, 0xb5}, "zstd", unzstd },
-	{ {0, 0}, NULL, NULL }
+	{ .magic = {0x1f, 0x8b}, .name = "gzip", .decompressor = gunzip },
+	{ .magic = {0x1f, 0x9e}, .name = "gzip", .decompressor = gunzip },
+	{ .magic = {0x42, 0x5a}, .name = "bzip2", .decompressor = bunzip2 },
+	{ .magic = {0x5d, 0x00}, .name = "lzma", .decompressor = unlzma },
+	{ .magic = {0xfd, 0x37}, .name = "xz", .decompressor = unxz },
+	{ .magic = {0x89, 0x4c}, .name = "lzo", .decompressor = unlzo },
+	{ .magic = {0x02, 0x21}, .name = "lz4", .decompressor = unlz4 },
+	{ .magic = {0x28, 0xb5}, .name = "zstd", .decompressor = unzstd },
+	{ /* sentinel */ }
 };
 
 decompress_fn __init decompress_method(const unsigned char *inbuf, long len,
@@ -73,11 +73,10 @@ decompress_fn __init decompress_method(const unsigned char *inbuf, long len,
 
 	pr_debug("Compressed data magic: %#.2x %#.2x\n", inbuf[0], inbuf[1]);
 
-	for (cf = compressed_formats; cf->name; cf++) {
+	for (cf = compressed_formats; cf->name; cf++)
 		if (!memcmp(inbuf, cf->magic, 2))
 			break;
 
-	}
 	if (name)
 		*name = cf->name;
 	return cf->decompressor;

lib/digsig.c

@@ -159,7 +159,6 @@ static int digsig_verify_rsa(struct key *key,
 
 	len = mlen;
 	head = len - l;
-	memset(out1, 0, head);
 	memcpy(out1 + head, p, l);
 
 	kfree(p);

lib/dump_stack.c

@@ -102,7 +102,7 @@ static void __dump_stack(const char *log_lvl)
  */
 asmlinkage __visible void dump_stack_lvl(const char *log_lvl)
 {
-	bool in_panic = this_cpu_in_panic();
+	bool in_panic = panic_on_this_cpu();
 	unsigned long flags;
 
 	/*

lib/fault-inject-usercopy.c

@@ -22,10 +22,8 @@ static int __init fail_usercopy_debugfs(void)
 
 	dir = fault_create_debugfs_attr("fail_usercopy", NULL,
 					&fail_usercopy.attr);
-	if (IS_ERR(dir))
-		return PTR_ERR(dir);
 
-	return 0;
+	return PTR_ERR_OR_ZERO(dir);
 }
 
 late_initcall(fail_usercopy_debugfs);

lib/genalloc.c

@@ -899,8 +899,11 @@ struct gen_pool *of_gen_pool_get(struct device_node *np,
 		if (!name)
 			name = of_node_full_name(np_pool);
 	}
-	if (pdev)
+	if (pdev) {
 		pool = gen_pool_get(&pdev->dev, name);
+		put_device(&pdev->dev);
+	}
+
 	of_node_put(np_pool);
 
 	return pool;

lib/ref_tracker.c

@@ -75,7 +75,7 @@ ref_tracker_get_stats(struct ref_tracker_dir *dir, unsigned int limit)
 	struct ref_tracker *tracker;
 
 	stats = kmalloc(struct_size(stats, stacks, limit),
-			GFP_NOWAIT | __GFP_NOWARN);
+			GFP_NOWAIT);
 	if (!stats)
 		return ERR_PTR(-ENOMEM);
 	stats->total = 0;
@@ -159,7 +159,7 @@ __ref_tracker_dir_pr_ostream(struct ref_tracker_dir *dir,
 		return;
 	}
 
-	sbuf = kmalloc(STACK_BUF_SIZE, GFP_NOWAIT | __GFP_NOWARN);
+	sbuf = kmalloc(STACK_BUF_SIZE, GFP_NOWAIT);
 
 	for (i = 0, skipped = stats->total; i < stats->count; ++i) {
 		stack = stats->stacks[i].stack_handle;
@@ -306,7 +306,7 @@ int ref_tracker_free(struct ref_tracker_dir *dir,
 	}
 	nr_entries = stack_trace_save(entries, ARRAY_SIZE(entries), 1);
 	stack_handle = stack_depot_save(entries, nr_entries,
-					GFP_NOWAIT | __GFP_NOWARN);
+					GFP_NOWAIT);
 
 	spin_lock_irqsave(&dir->lock, flags);
 	if (tracker->dead) {

lib/sys_info.c

@@ -55,7 +55,7 @@ int sysctl_sys_info_handler(const struct ctl_table *ro_table, int write,
 					  void *buffer, size_t *lenp,
 					  loff_t *ppos)
 {
-	char names[sizeof(sys_info_avail) + 1];
+	char names[sizeof(sys_info_avail)];
 	struct ctl_table table;
 	unsigned long *si_bits_global;
 
@@ -81,6 +81,7 @@ int sysctl_sys_info_handler(const struct ctl_table *ro_table, int write,
 		char *delim = "";
 		int i, len = 0;
 
+		names[0] = '\0';
 		for (i = 0; i < ARRAY_SIZE(si_names); i++) {
 			if (*si_bits_global & si_names[i].bit) {
 				len += scnprintf(names + len, sizeof(names) - len,

lib/test_firmware.c

@@ -26,6 +26,7 @@
 #include <linux/kthread.h>
 #include <linux/vmalloc.h>
 #include <linux/efi_embedded_fw.h>
+#include <linux/string_choices.h>
 
 MODULE_IMPORT_NS("TEST_FIRMWARE");
 
@@ -304,17 +305,17 @@ static ssize_t config_show(struct device *dev,
 			"FW_ACTION_NOUEVENT");
 	len += scnprintf(buf + len, PAGE_SIZE - len,
 			"into_buf:\t\t%s\n",
-			test_fw_config->into_buf ? "true" : "false");
+			str_true_false(test_fw_config->into_buf));
 	len += scnprintf(buf + len, PAGE_SIZE - len,
 			"buf_size:\t%zu\n", test_fw_config->buf_size);
 	len += scnprintf(buf + len, PAGE_SIZE - len,
 			"file_offset:\t%zu\n", test_fw_config->file_offset);
 	len += scnprintf(buf + len, PAGE_SIZE - len,
 			"partial:\t\t%s\n",
-			test_fw_config->partial ? "true" : "false");
+			str_true_false(test_fw_config->partial));
 	len += scnprintf(buf + len, PAGE_SIZE - len,
 			"sync_direct:\t\t%s\n",
-			test_fw_config->sync_direct ? "true" : "false");
+			str_true_false(test_fw_config->sync_direct));
 	len += scnprintf(buf + len, PAGE_SIZE - len,
 			"read_fw_idx:\t%u\n", test_fw_config->read_fw_idx);
 	if (test_fw_config->upload_name)