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)
  ...

1 files changed, 7 insertions, 7 deletions

diff --git a/kernel/printk/nbcon.c b/kernel/printk/nbcon.c
index 646801813415..558ef3177976 100644
--- a/kernel/printk/nbcon.c
+++ b/kernel/printk/nbcon.c
@@ -12,6 +12,7 @@
 #include <linux/irqflags.h>
 #include <linux/kthread.h>
 #include <linux/minmax.h>
+#include <linux/panic.h>
 #include <linux/percpu.h>
 #include <linux/preempt.h>
 #include <linux/slab.h>
@@ -254,7 +255,7 @@ static int nbcon_context_try_acquire_direct(struct nbcon_context *ctxt,
 		 * opportunity to perform any necessary cleanup if they were
 		 * interrupted by the panic CPU while printing.
 		 */
-		if (other_cpu_in_panic() &&
+		if (panic_on_other_cpu() &&
 		    (!is_reacquire || cur->unsafe_takeover)) {
 			return -EPERM;
 		}
@@ -309,7 +310,7 @@ static bool nbcon_waiter_matches(struct nbcon_state *cur, int expected_prio)
 	 * Event #2 implies the new context is PANIC.
 	 * Event #3 occurs when panic() has flushed the console.
 	 * Event #4 occurs when a non-panic CPU reacquires.
-	 * Event #5 is not possible due to the other_cpu_in_panic() check
+	 * Event #5 is not possible due to the panic_on_other_cpu() check
 	 *          in nbcon_context_try_acquire_handover().
 	 */
 
@@ -348,7 +349,7 @@ static int nbcon_context_try_acquire_requested(struct nbcon_context *ctxt,
 	struct nbcon_state new;
 
 	/* Note that the caller must still remove the request! */
-	if (other_cpu_in_panic())
+	if (panic_on_other_cpu())
 		return -EPERM;
 
 	/*
@@ -446,7 +447,7 @@ static int nbcon_context_try_acquire_handover(struct nbcon_context *ctxt,
 	 * nbcon_waiter_matches(). In particular, the assumption that
 	 * lower priorities are ignored during panic.
 	 */
-	if (other_cpu_in_panic())
+	if (panic_on_other_cpu())
 		return -EPERM;
 
 	/* Handover is not possible on the same CPU. */
@@ -589,7 +590,6 @@ static struct printk_buffers panic_nbcon_pbufs;
  */
 static bool nbcon_context_try_acquire(struct nbcon_context *ctxt, bool is_reacquire)
 {
-	unsigned int cpu = smp_processor_id();
 	struct console *con = ctxt->console;
 	struct nbcon_state cur;
 	int err;
@@ -614,7 +614,7 @@ out:
 	/* Acquire succeeded. */
 
 	/* Assign the appropriate buffer for this context. */
-	if (atomic_read(&panic_cpu) == cpu)
+	if (panic_on_this_cpu())
 		ctxt->pbufs = &panic_nbcon_pbufs;
 	else
 		ctxt->pbufs = con->pbufs;
@@ -1394,7 +1394,7 @@ enum nbcon_prio nbcon_get_default_prio(void)
 {
 	unsigned int *cpu_emergency_nesting;
 
-	if (this_cpu_in_panic())
+	if (panic_on_this_cpu())
 		return NBCON_PRIO_PANIC;
 
 	cpu_emergency_nesting = nbcon_get_cpu_emergency_nesting();