Johannes Berg e246518aa2 PM: sleep: annotate RCU list iterations ... These iterations require the read lock, otherwise RCU lockdep will splat: ============================= WARNING: suspicious RCU usage 6.17.0-rc3-00014-g31419c045d64 #6 Tainted: G O ----------------------------- drivers/base/power/main.c:1333 RCU-list traversed in non-reader section!! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 5 locks held by rtcwake/547: #0: 00000000643ab418 (sb_writers#6){.+.+}-{0:0}, at: file_start_write+0x2b/0x3a #1: 0000000067a0ca88 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x181/0x24b #2: 00000000631eac40 (kn->active#3){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x191/0x24b #3: 00000000609a1308 (system_transition_mutex){+.+.}-{4:4}, at: pm_suspend+0xaf/0x30b #4: 0000000060c0fdb0 (device_links_srcu){.+.+}-{0:0}, at: device_links_read_lock+0x75/0x98 stack backtrace: CPU: 0 UID: 0 PID: 547 Comm: rtcwake Tainted: G O 6.17.0-rc3-00014-g31419c045d64 #6 VOLUNTARY Tainted: [O]=OOT_MODULE Stack: 223721b3a80 6089eac6 00000001 00000001 ffffff00 6089eac6 00000535 6086e528 721b3ac0 6003c294 00000000 60031fc0 Call Trace: [<600407ed>] show_stack+0x10e/0x127 [<6003c294>] dump_stack_lvl+0x77/0xc6 [<6003c2fd>] dump_stack+0x1a/0x20 [<600bc2f8>] lockdep_rcu_suspicious+0x116/0x13e [<603d8ea1>] dpm_async_suspend_superior+0x117/0x17e [<603d980f>] device_suspend+0x528/0x541 [<603da24b>] dpm_suspend+0x1a2/0x267 [<603da837>] dpm_suspend_start+0x5d/0x72 [<600ca0c9>] suspend_devices_and_enter+0xab/0x736 [...] Add the fourth argument to the iteration to annotate this and avoid the splat. Fixes: 06799631d5 ("PM: sleep: Make async suspend handle suppliers like parents") Fixes: ed18738fff ("PM: sleep: Make async resume handle consumers like children") Signed-off-by: Johannes Berg <johannes.berg@intel.com> Link: https://patch.msgid.link/20250826134348.aba79f6e6299.I9ecf55da46ccf33778f2c018a82e1819d815b348@changeid Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>		2025-08-26 15:27:04 +02:00
..
Makefile	PM: domains: Move genpd and its governor to the pmdomain subsystem	2023-12-18 12:49:48 +01:00
clock_ops.c	PM: clk: Remove unused pm_clk_remove()	2025-03-12 21:28:48 +01:00
common.c	PM: domains: Detach on device_unbind_cleanup()	2025-07-07 20:41:21 +02:00
generic_ops.c	PM: sleep: Remove unused pm_generic_ wrappers	2025-03-12 21:02:50 +01:00
main.c	PM: sleep: annotate RCU list iterations	2025-08-26 15:27:04 +02:00
power.h	PM: sleep: wakeirq: fix wake irq arming	2023-07-24 09:51:51 +02:00
qos-test.c	…
qos.c	PM: QoS: Export dev_pm_qos_read_value	2024-10-25 10:17:37 -05:00
runtime.c	Driver core changes for 6.17-rc1	2025-07-29 12:15:39 -07:00
sysfs.c	PM: sysfs: Move debug runtime PM attributes to runtime_attrs[]	2025-05-09 15:59:27 +02:00
trace.c	rtc: Extend timeout for waiting for UIP to clear to 1s	2023-12-17 22:33:55 +01:00
wakeirq.c	PM: sleep: wakeirq: Introduce device-managed variant of dev_pm_set_wake_irq()	2025-01-17 20:27:46 +01:00
wakeup.c	treewide, timers: Rename from_timer() to timer_container_of()	2025-06-08 09:07:37 +02:00
wakeup_stats.c	PM: wakeup: Add missing wakeup source attribute relax_count	2025-05-09 15:41:34 +02:00