diff --git a/include/linux/sched/ext.h b/include/linux/sched/ext.h
index 1ddbde64a31b..65bc0a489cd2 100644
--- a/include/linux/sched/ext.h
+++ b/include/linux/sched/ext.h
@@ -205,11 +205,13 @@ struct sched_ext_entity {
 
 void sched_ext_free(struct task_struct *p);
 void print_scx_info(const char *log_lvl, struct task_struct *p);
+void scx_softlockup(u32 dur_s);
 
 #else	/* !CONFIG_SCHED_CLASS_EXT */
 
 static inline void sched_ext_free(struct task_struct *p) {}
 static inline void print_scx_info(const char *log_lvl, struct task_struct *p) {}
+static inline void scx_softlockup(u32 dur_s) {}
 
 #endif	/* CONFIG_SCHED_CLASS_EXT */
 #endif	/* _LINUX_SCHED_EXT_H */
diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c
index 2d41f1917464..02f39314ef8a 100644
--- a/kernel/sched/ext.c
+++ b/kernel/sched/ext.c
@@ -867,6 +867,7 @@ static DEFINE_MUTEX(scx_ops_enable_mutex);
 DEFINE_STATIC_KEY_FALSE(__scx_ops_enabled);
 DEFINE_STATIC_PERCPU_RWSEM(scx_fork_rwsem);
 static atomic_t scx_ops_enable_state_var = ATOMIC_INIT(SCX_OPS_DISABLED);
+static unsigned long scx_in_softlockup;
 static atomic_t scx_ops_breather_depth = ATOMIC_INIT(0);
 static int scx_ops_bypass_depth;
 static bool scx_ops_init_task_enabled;
@@ -4614,6 +4615,49 @@ bool task_should_scx(struct task_struct *p)
 	return p->policy == SCHED_EXT;
 }
 
+/**
+ * scx_softlockup - sched_ext softlockup handler
+ *
+ * On some multi-socket setups (e.g. 2x Intel 8480c), the BPF scheduler can
+ * live-lock the system by making many CPUs target the same DSQ to the point
+ * where soft-lockup detection triggers. This function is called from
+ * soft-lockup watchdog when the triggering point is close and tries to unjam
+ * the system by enabling the breather and aborting the BPF scheduler.
+ */
+void scx_softlockup(u32 dur_s)
+{
+	switch (scx_ops_enable_state()) {
+	case SCX_OPS_ENABLING:
+	case SCX_OPS_ENABLED:
+		break;
+	default:
+		return;
+	}
+
+	/* allow only one instance, cleared at the end of scx_ops_bypass() */
+	if (test_and_set_bit(0, &scx_in_softlockup))
+		return;
+
+	printk_deferred(KERN_ERR "sched_ext: Soft lockup - CPU%d stuck for %us, disabling \"%s\"\n",
+			smp_processor_id(), dur_s, scx_ops.name);
+
+	/*
+	 * Some CPUs may be trapped in the dispatch paths. Enable breather
+	 * immediately; otherwise, we might even be able to get to
+	 * scx_ops_bypass().
+	 */
+	atomic_inc(&scx_ops_breather_depth);
+
+	scx_ops_error("soft lockup - CPU#%d stuck for %us",
+		      smp_processor_id(), dur_s);
+}
+
+static void scx_clear_softlockup(void)
+{
+	if (test_and_clear_bit(0, &scx_in_softlockup))
+		atomic_dec(&scx_ops_breather_depth);
+}
+
 /**
  * scx_ops_bypass - [Un]bypass scx_ops and guarantee forward progress
  *
@@ -4724,6 +4768,7 @@ static void scx_ops_bypass(bool bypass)
 	atomic_dec(&scx_ops_breather_depth);
 unlock:
 	raw_spin_unlock_irqrestore(&bypass_lock, flags);
+	scx_clear_softlockup();
 }
 
 static void free_exit_info(struct scx_exit_info *ei)
diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index 262691ba62b7..5a93d4c446b8 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -644,6 +644,14 @@ static int is_softlockup(unsigned long touch_ts,
 		    need_counting_irqs())
 			start_counting_irqs();
 
+		/*
+		 * A poorly behaving BPF scheduler can live-lock the system into
+		 * soft lockups. Tell sched_ext to try ejecting the BPF
+		 * scheduler when close to a soft lockup.
+		 */
+		if (time_after_eq(now, period_ts + get_softlockup_thresh() * 3 / 4))
+			scx_softlockup(now - touch_ts);
+
 		/* Warn about unreasonable delays. */
 		if (time_after(now, period_ts + get_softlockup_thresh()))
 			return now - touch_ts;
diff --git a/tools/sched_ext/scx_show_state.py b/tools/sched_ext/scx_show_state.py
index c4b3fdda9a0b..b800d4f5f2e9 100644
--- a/tools/sched_ext/scx_show_state.py
+++ b/tools/sched_ext/scx_show_state.py
@@ -35,6 +35,8 @@ print(f'enabled       : {read_static_key("__scx_ops_enabled")}')
 print(f'switching_all : {read_int("scx_switching_all")}')
 print(f'switched_all  : {read_static_key("__scx_switched_all")}')
 print(f'enable_state  : {ops_state_str(enable_state)} ({enable_state})')
+print(f'in_softlockup : {prog["scx_in_softlockup"].value_()}')
+print(f'breather_depth: {read_atomic("scx_ops_breather_depth")}')
 print(f'bypass_depth  : {prog["scx_ops_bypass_depth"].value_()}')
 print(f'nr_rejected   : {read_atomic("scx_nr_rejected")}')
 print(f'enable_seq    : {read_atomic("scx_enable_seq")}')