Shawn Guo ae9da95de3 UPSTREAM: PM: domains: Fix sleep-in-atomic bug caused by genpd_debug_remove() ... When a genpd with GENPD_FLAG_IRQ_SAFE gets removed, the following sleep-in-atomic bug will be seen, as genpd_debug_remove() will be called with a spinlock being held. [ 0.029183] BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:1460 [ 0.029204] in_atomic(): 1, irqs_disabled(): 128, non_block: 0, pid: 1, name: swapper/0 [ 0.029219] preempt_count: 1, expected: 0 [ 0.029230] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 5.17.0-rc4+ #489 [ 0.029245] Hardware name: Thundercomm TurboX CM2290 (DT) [ 0.029256] Call trace: [ 0.029265] dump_backtrace.part.0+0xbc/0xd0 [ 0.029285] show_stack+0x3c/0xa0 [ 0.029298] dump_stack_lvl+0x7c/0xa0 [ 0.029311] dump_stack+0x18/0x34 [ 0.029323] __might_resched+0x10c/0x13c [ 0.029338] __might_sleep+0x4c/0x80 [ 0.029351] down_read+0x24/0xd0 [ 0.029363] lookup_one_len_unlocked+0x9c/0xcc [ 0.029379] lookup_positive_unlocked+0x10/0x50 [ 0.029392] debugfs_lookup+0x68/0xac [ 0.029406] genpd_remove.part.0+0x12c/0x1b4 [ 0.029419] of_genpd_remove_last+0xa8/0xd4 [ 0.029434] psci_cpuidle_domain_probe+0x174/0x53c [ 0.029449] platform_probe+0x68/0xe0 [ 0.029462] really_probe+0x190/0x430 [ 0.029473] __driver_probe_device+0x90/0x18c [ 0.029485] driver_probe_device+0x40/0xe0 [ 0.029497] __driver_attach+0xf4/0x1d0 [ 0.029508] bus_for_each_dev+0x70/0xd0 [ 0.029523] driver_attach+0x24/0x30 [ 0.029534] bus_add_driver+0x164/0x22c [ 0.029545] driver_register+0x78/0x130 [ 0.029556] __platform_driver_register+0x28/0x34 [ 0.029569] psci_idle_init_domains+0x1c/0x28 [ 0.029583] do_one_initcall+0x50/0x1b0 [ 0.029595] kernel_init_freeable+0x214/0x280 [ 0.029609] kernel_init+0x2c/0x13c [ 0.029622] ret_from_fork+0x10/0x20 It doesn't seem necessary to call genpd_debug_remove() with the lock, so move it out from locking to fix the problem. Bug: 254441685 Fixes: 718072ceb2 ("PM: domains: create debugfs nodes when adding power domains") Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Cc: 5.11+ <stable@vger.kernel.org> # 5.11+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> (cherry picked from commit f6bfe8b5b2) Signed-off-by: Lee Jones <joneslee@google.com> Change-Id: If863989ededdf0d3368921fe66d1eaf6bb65c09a		2022-11-09 13:57:12 +00:00
..
firmware_loader	Revert "firmware_loader: use kernel credentials when reading firmware"	2022-10-10 10:24:30 -07:00
power	UPSTREAM: PM: domains: Fix sleep-in-atomic bug caused by genpd_debug_remove()	2022-11-09 13:57:12 +00:00
regmap	regmap-irq: Fix a bug in regmap_irq_enable() for type_in_mask chips	2022-06-29 08:59:49 +02:00
test	drivers/base: build kunit tests without structleak plugin	2021-03-17 17:06:24 +01:00
arch_topology.c	This is the 5.10.114 stable release	2022-05-12 17:48:27 +02:00
attribute_container.c
base.h	UPSTREAM: Revert "driver core: fw_devlink: Add support for batching fwnode parsing"	2021-01-21 18:01:50 -08:00
bus.c	driver: base: fix UAF when driver_attach failed	2022-06-14 18:32:34 +02:00
cacheinfo.c
class.c
component.c
container.c
core.c	This is the 5.10.130 stable release	2022-07-28 17:04:30 +02:00
cpu.c	x86/bugs: Report AMD retbleed vulnerability	2022-07-25 11:26:40 +02:00
dd.c	This is the 5.10.122 stable release	2022-07-28 15:05:26 +02:00
devcoredump.c	FROMLIST: devcoredump : Serialize devcd_del work	2022-06-16 18:03:28 +00:00
devres.c
devtmpfs.c	devtmpfs regression fix: reconfigure on each mount	2022-01-20 09:17:49 +01:00
driver.c
firmware.c
hypervisor.c
init.c
isa.c
Kconfig
Makefile
map.c
memory.c	drivers/base/memory: fix an unlikely reference counting issue in __add_memory_block()	2022-06-09 10:21:16 +02:00
module.c
node.c	drivers/base/node.c: fix compaction sysfs file leak	2022-06-09 10:21:16 +02:00
pinctrl.c
platform-msi.c
platform.c
property.c	This is the 5.10.94 stable release	2022-01-27 11:49:22 +01:00
soc.c
swnode.c	This is the 5.10.94 stable release	2022-01-27 11:49:22 +01:00
syscore.c
topology.c
transport_class.c