This is the 5.4.265 stable release

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Merge 5.4.265 into android11-5.4-lts

Changes in 5.4.265
	afs: Fix refcount underflow from error handling race
	net: ipv6: support reporting otherwise unknown prefix flags in RTM_NEWPREFIX
	qca_debug: Prevent crash on TX ring changes
	qca_debug: Fix ethtool -G iface tx behavior
	qca_spi: Fix reset behavior
	atm: solos-pci: Fix potential deadlock on &cli_queue_lock
	atm: solos-pci: Fix potential deadlock on &tx_queue_lock
	atm: Fix Use-After-Free in do_vcc_ioctl
	net/rose: Fix Use-After-Free in rose_ioctl
	qed: Fix a potential use-after-free in qed_cxt_tables_alloc
	net: Remove acked SYN flag from packet in the transmit queue correctly
	sign-file: Fix incorrect return values check
	vsock/virtio: Fix unsigned integer wrap around in virtio_transport_has_space()
	net: stmmac: use dev_err_probe() for reporting mdio bus registration failure
	net: stmmac: Handle disabled MDIO busses from devicetree
	appletalk: Fix Use-After-Free in atalk_ioctl
	cred: switch to using atomic_long_t
	ALSA: hda/hdmi: add force-connect quirks for ASUSTeK Z170 variants
	Revert "PCI: acpiphp: Reassign resources on bridge if necessary"
	usb: aqc111: check packet for fixup for true limit
	blk-throttle: fix lockdep warning of "cgroup_mutex or RCU read lock required!"
	bcache: avoid oversize memory allocation by small stripe_size
	bcache: add code comments for bch_btree_node_get() and __bch_btree_node_alloc()
	bcache: avoid NULL checking to c->root in run_cache_set()
	platform/x86: intel_telemetry: Fix kernel doc descriptions
	HID: add ALWAYS_POLL quirk for Apple kb
	HID: hid-asus: reset the backlight brightness level on resume
	HID: multitouch: Add quirk for HONOR GLO-GXXX touchpad
	asm-generic: qspinlock: fix queued_spin_value_unlocked() implementation
	net: usb: qmi_wwan: claim interface 4 for ZTE MF290
	HID: hid-asus: add const to read-only outgoing usb buffer
	perf: Fix perf_event_validate_size() lockdep splat
	soundwire: stream: fix NULL pointer dereference for multi_link
	ext4: prevent the normalized size from exceeding EXT_MAX_BLOCKS
	arm64: mm: Always make sw-dirty PTEs hw-dirty in pte_modify
	team: Fix use-after-free when an option instance allocation fails
	ring-buffer: Fix memory leak of free page
	mmc: block: Be sure to wait while busy in CQE error recovery
	powerpc/ftrace: Create a dummy stackframe to fix stack unwind
	powerpc/ftrace: Fix stack teardown in ftrace_no_trace
	Linux 5.4.265

Change-Id: I762a9cd127dfce014141a135e818a170c99e3fd1
Signed-off-by: Greg Kroah-Hartman <[email protected]>

block/blk-throttle.c

@@ -1374,6 +1374,7 @@ static void tg_conf_updated(struct throtl_grp *tg, bool global)
 		   tg_bps_limit(tg, READ), tg_bps_limit(tg, WRITE),
 		   tg_iops_limit(tg, READ), tg_iops_limit(tg, WRITE));
 
+	rcu_read_lock();
 	/*
 	 * Update has_rules[] flags for the updated tg's subtree.  A tg is
 	 * considered to have rules if either the tg itself or any of its
@@ -1401,6 +1402,7 @@ static void tg_conf_updated(struct throtl_grp *tg, bool global)
 		this_tg->latency_target = max(this_tg->latency_target,
 				parent_tg->latency_target);
 	}
+	rcu_read_unlock();
 
 	/*
 	 * We're already holding queue_lock and know @tg is valid.  Let's