Fix boot hang deadlock 7999370826680424856

arch/arm64/configs/gki_defconfig

@@ -1,6 +1,9 @@
 CONFIG_UAPI_HEADER_TEST=y
 CONFIG_AUDIT=y
 CONFIG_NO_HZ=y
+CONFIG_SYSCTL=y
+CONFIG_SYSVIPC=y
+CONFIG_POSIX_MQUEUE=y
 CONFIG_HIGH_RES_TIMERS=y
 CONFIG_BPF_SYSCALL=y
 CONFIG_BPF_JIT=y
@@ -29,10 +32,14 @@ CONFIG_CGROUP_SCHED=y
 CONFIG_UCLAMP_TASK_GROUP=y
 CONFIG_CGROUP_FREEZER=y
 CONFIG_CPUSETS=y
+CONFIG_CGROUP_DEVICE=y
 CONFIG_CGROUP_CPUACCT=y
 CONFIG_CGROUP_BPF=y
 CONFIG_NAMESPACES=y
-# CONFIG_PID_NS is not set
+CONFIG_UTS_NS=y
+CONFIG_IPC_NS=y
+CONFIG_PID_NS=y
+CONFIG_MNT_NS=y
 CONFIG_RT_SOFTIRQ_AWARE_SCHED=y
 # CONFIG_RD_BZIP2 is not set
 # CONFIG_RD_LZMA is not set
@@ -310,7 +317,10 @@ CONFIG_PCIE_DW_PLAT_EP=y
 CONFIG_PCIE_QCOM=y
 CONFIG_PCIE_KIRIN=y
 CONFIG_PCI_ENDPOINT=y
+CONFIG_DEVTMPFS=y
+CONFIG_FW_LOADER=y
 CONFIG_FW_LOADER_USER_HELPER=y
+CONFIG_FW_LOADER_COMPRESS=y
 # CONFIG_FW_CACHE is not set
 # CONFIG_BRCMSTB_GISB_ARB is not set
 # CONFIG_SUN50I_DE2_BUS is not set

arch/arm64/configs/gs201_defconfig

@@ -3,6 +3,9 @@ CONFIG_LOCALVERSION="-Sultan"
 CONFIG_IRQ_SBALANCE=y
 CONFIG_SBALANCE_EXCLUDE_CPUS="3,5,7"
 CONFIG_NO_HZ=y
+CONFIG_SYSCTL=y
+CONFIG_SYSVIPC=y
+CONFIG_POSIX_MQUEUE=y
 CONFIG_HIGH_RES_TIMERS=y
 CONFIG_BPF_SYSCALL=y
 CONFIG_BPF_JIT=y
@@ -29,11 +32,15 @@ CONFIG_CGROUP_SCHED=y
 CONFIG_UCLAMP_TASK_GROUP=y
 CONFIG_CGROUP_FREEZER=y
 CONFIG_CPUSETS=y
+CONFIG_CGROUP_DEVICE=y
 CONFIG_CGROUP_CPUACCT=y
+CONFIG_MEMCG=y
 CONFIG_CGROUP_BPF=y
 CONFIG_NAMESPACES=y
-# CONFIG_UTS_NS is not set
-# CONFIG_PID_NS is not set
+CONFIG_UTS_NS=y
+CONFIG_IPC_NS=y
+CONFIG_PID_NS=y
+CONFIG_MNT_NS=y
 CONFIG_SCHED_CASS=y
 CONFIG_RT_SOFTIRQ_AWARE_SCHED=y
 # CONFIG_RD_GZIP is not set
@@ -321,7 +328,10 @@ CONFIG_PCI_IOV=y
 CONFIG_PCI_HOST_GENERIC=y
 CONFIG_PCIE_DW_PLAT_EP=y
 CONFIG_PCI_ENDPOINT=y
+CONFIG_DEVTMPFS=y
+CONFIG_FW_LOADER=y
 CONFIG_FW_LOADER_USER_HELPER=y
+CONFIG_FW_LOADER_COMPRESS=y
 # CONFIG_FW_CACHE is not set
 CONFIG_ARM_SCMI_PROTOCOL=y
 # CONFIG_ARM_SCMI_POWER_DOMAIN is not set
@@ -845,3 +855,4 @@ CONFIG_TRUSTY=m
 # CONFIG_TRUSTY_TEST is not set
 CONFIG_TRUSTY_DMA_BUF_FFA_TAG=y
 CONFIG_TRUSTY_CRASH_IS_PANIC=y
+CONFIG_PSI=y

arch/arm64/configs/zuma_defconfig

@@ -3,6 +3,9 @@ CONFIG_LOCALVERSION="-Sultan"
 CONFIG_IRQ_SBALANCE=y
 CONFIG_SBALANCE_EXCLUDE_CPUS="3,7,8"
 CONFIG_NO_HZ=y
+CONFIG_SYSCTL=y
+CONFIG_SYSVIPC=y
+CONFIG_POSIX_MQUEUE=y
 CONFIG_HIGH_RES_TIMERS=y
 CONFIG_BPF_SYSCALL=y
 CONFIG_BPF_JIT=y
@@ -30,10 +33,14 @@ CONFIG_UCLAMP_TASK_GROUP=y
 CONFIG_CGROUP_FREEZER=y
 CONFIG_CPUSETS=y
 CONFIG_CGROUP_CPUACCT=y
+CONFIG_MEMCG=y
+CONFIG_CGROUP_DEVICE=y
 CONFIG_CGROUP_BPF=y
 CONFIG_NAMESPACES=y
-# CONFIG_UTS_NS is not set
-# CONFIG_PID_NS is not set
+CONFIG_UTS_NS=y
+CONFIG_IPC_NS=y
+CONFIG_PID_NS=y
+CONFIG_MNT_NS=y
 CONFIG_SCHED_CASS=y
 CONFIG_RT_SOFTIRQ_AWARE_SCHED=y
 # CONFIG_RD_GZIP is not set
@@ -314,7 +321,10 @@ CONFIG_PCI_IOV=y
 CONFIG_PCI_HOST_GENERIC=y
 CONFIG_PCIE_DW_PLAT_EP=y
 CONFIG_PCI_ENDPOINT=y
+CONFIG_DEVTMPFS=y
+CONFIG_FW_LOADER=y
 CONFIG_FW_LOADER_USER_HELPER=y
+CONFIG_FW_LOADER_COMPRESS=y
 # CONFIG_FW_CACHE is not set
 CONFIG_ARM_SCMI_PROTOCOL=y
 # CONFIG_ARM_SCMI_POWER_DOMAIN is not set
@@ -846,3 +856,4 @@ CONFIG_TRUSTY=m
 # CONFIG_TRUSTY_TEST is not set
 CONFIG_TRUSTY_DMA_BUF_FFA_TAG=y
 CONFIG_TRUSTY_CRASH_IS_PANIC=y
+CONFIG_PSI=y

arch/arm64/configs/zumapro_defconfig

@@ -3,6 +3,9 @@ CONFIG_LOCALVERSION="-Sultan"
 CONFIG_IRQ_SBALANCE=y
 CONFIG_SBALANCE_EXCLUDE_CPUS="3,6,7"
 CONFIG_NO_HZ=y
+CONFIG_SYSCTL=y
+CONFIG_SYSVIPC=y
+CONFIG_POSIX_MQUEUE=y
 CONFIG_HIGH_RES_TIMERS=y
 CONFIG_BPF_SYSCALL=y
 CONFIG_BPF_JIT=y
@@ -29,10 +32,14 @@ CONFIG_UCLAMP_TASK_GROUP=y
 CONFIG_CGROUP_FREEZER=y
 CONFIG_CPUSETS=y
 CONFIG_CGROUP_CPUACCT=y
+CONFIG_MEMCG=y
+CONFIG_CGROUP_DEVICE=y
 CONFIG_CGROUP_BPF=y
 CONFIG_NAMESPACES=y
-# CONFIG_UTS_NS is not set
-# CONFIG_PID_NS is not set
+CONFIG_UTS_NS=y
+CONFIG_IPC_NS=y
+CONFIG_PID_NS=y
+CONFIG_MNT_NS=y
 CONFIG_SCHED_CASS=y
 CONFIG_RT_SOFTIRQ_AWARE_SCHED=y
 # CONFIG_RD_GZIP is not set
@@ -315,7 +322,10 @@ CONFIG_PCI_IOV=y
 CONFIG_PCI_HOST_GENERIC=y
 CONFIG_PCIE_DW_PLAT_EP=y
 CONFIG_PCI_ENDPOINT=y
+CONFIG_DEVTMPFS=y
+CONFIG_FW_LOADER=y
 CONFIG_FW_LOADER_USER_HELPER=y
+CONFIG_FW_LOADER_COMPRESS=y
 # CONFIG_FW_CACHE is not set
 CONFIG_ARM_SCMI_PROTOCOL=y
 # CONFIG_ARM_SCMI_POWER_DOMAIN is not set
@@ -850,3 +860,4 @@ CONFIG_BACKLIGHT_RT4539_GS=m
 CONFIG_QCOM_QBT_HANDLER=m
 CONFIG_LINK_DEVICE_PCIE_SOC_EXYNOS=y
 CONFIG_CP_PMIC=m
+CONFIG_PSI=y

drivers/base/firmware_loader/main.c

@@ -485,7 +485,12 @@ static const char * const fw_path[] = {
 	"/lib/firmware/updates/" UTS_RELEASE,
 	"/lib/firmware/updates",
 	"/lib/firmware/" UTS_RELEASE,
-	"/lib/firmware"
+	"/lib/firmware",
+	"/image",
+	"/vendor/firmware",
+	"/vendor/firmware/image",
+	"/odm/firmware",
+	"/odm/firmware/image"
 };
 
 static char strpath[PATH_SIZE * CUSTOM_FW_PATH_COUNT];

mm/vmscan.c

@@ -211,8 +211,7 @@ static void set_task_reclaim_state(struct task_struct *task,
 }
 
 static LIST_HEAD(shrinker_list);
-static DEFINE_SPINLOCK(shrinker_lock);
-static DEFINE_RWLOCK(shrinker_rwlock);
+static DECLARE_RWSEM(shrinker_rwsem);
 
 #ifdef CONFIG_MEMCG
 static int shrinker_nr_max;
@@ -719,12 +718,12 @@ void free_prealloced_shrinker(struct shrinker *shrinker)
 void register_shrinker_prepared(struct shrinker *shrinker)
 {
 	init_rwsem(&shrinker->del_rwsem);
-	spin_lock(&shrinker_lock);
+	down_write(&shrinker_rwsem);
 	/* Use the RCU list mutation primitive to allow concurrent iteration */
 	list_add_tail_rcu(&shrinker->list, &shrinker_list);
 	shrinker->flags |= SHRINKER_REGISTERED;
 	shrinker_debugfs_add(shrinker);
-	spin_unlock(&shrinker_lock);
+	up_write(&shrinker_rwsem);
 }
 
 static int __register_shrinker(struct shrinker *shrinker)
@@ -780,15 +779,11 @@ void unregister_shrinker(struct shrinker *shrinker)
 	 * Wait until the shrinker list is no longer in use (shrinker_rwlock)
 	 */
 	down_write(&shrinker->del_rwsem);
-	spin_lock(&shrinker_lock);
-	write_lock(&shrinker_rwlock);
-	list_del(&shrinker->list);
+	down_write(&shrinker_rwsem);
+	list_del_rcu(&shrinker->list);
 	shrinker->flags &= ~SHRINKER_REGISTERED;
-	if (shrinker->flags & SHRINKER_MEMCG_AWARE)
-		unregister_memcg_shrinker(shrinker);
 	debugfs_entry = shrinker_debugfs_remove(shrinker);
-	write_unlock(&shrinker_rwlock);
-	spin_unlock(&shrinker_lock);
+	up_write(&shrinker_rwsem);
 	up_write(&shrinker->del_rwsem);
 
 	debugfs_remove_recursive(debugfs_entry);
@@ -1040,29 +1035,35 @@ unsigned long shrink_slab(gfp_t gfp_mask, int nid,
 	if (!mem_cgroup_disabled() && !mem_cgroup_is_root(memcg))
 		return shrink_slab_memcg(gfp_mask, nid, memcg, priority);
 
-	read_lock(&shrinker_rwlock);
-	/* Use the RCU list iteration primitive to allow concurrent additions */
-	list_for_each_entry_rcu(shrinker, &shrinker_list, list) {
-		struct shrink_control sc = {
-			.gfp_mask = gfp_mask,
-			.nid = nid,
-			.memcg = memcg,
-		};
+	if (down_read_trylock(&shrinker_rwsem)) {
+		/* Use the RCU list iteration primitive to allow concurrent additions */
+		list_for_each_entry_rcu(shrinker, &shrinker_list, list) {
+			struct shrink_control sc = {
+				.gfp_mask = gfp_mask,
+				.nid = nid,
+				.memcg = memcg,
+			};
 
-		if (!down_read_trylock(&shrinker->del_rwsem))
-			continue;
-		read_unlock(&shrinker_rwlock);
+			if (!down_read_trylock(&shrinker->del_rwsem))
+				continue;
+			up_read(&shrinker_rwsem);
 
-		ret = do_shrink_slab(&sc, shrinker, priority);
-		if (ret == SHRINK_EMPTY)
-			ret = 0;
-		freed += ret;
+			ret = do_shrink_slab(&sc, shrinker, priority);
+			if (ret == SHRINK_EMPTY)
+				ret = 0;
+			freed += ret;
 
-		read_lock(&shrinker_rwlock);
-		up_read(&shrinker->del_rwsem);
+			if (!down_read_trylock(&shrinker_rwsem)) {
+				up_read(&shrinker->del_rwsem);
+				goto out;
+			}
+			up_read(&shrinker->del_rwsem);
+		}
+
+		up_read(&shrinker_rwsem);
 	}
-	read_unlock(&shrinker_rwlock);
 
+out:
 	cond_resched();
 	return freed;
 }