Zqiang 3afcca7bcc rcutorture: Fix invalid context warning when enable srcu barrier testing ... [ Upstream commit 668c0406d8 ] When the torture_type is set srcu or srcud and cb_barrier is non-zero, running the rcutorture test will trigger the following warning: [ 163.910989][ C1] BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:48 [ 163.910994][ C1] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 0, name: swapper/1 [ 163.910999][ C1] preempt_count: 10001, expected: 0 [ 163.911002][ C1] RCU nest depth: 0, expected: 0 [ 163.911005][ C1] INFO: lockdep is turned off. [ 163.911007][ C1] irq event stamp: 30964 [ 163.911010][ C1] hardirqs last enabled at (30963): [<ffffffffabc7df52>] do_idle+0x362/0x500 [ 163.911018][ C1] hardirqs last disabled at (30964): [<ffffffffae616eff>] sysvec_call_function_single+0xf/0xd0 [ 163.911025][ C1] softirqs last enabled at (0): [<ffffffffabb6475f>] copy_process+0x16ff/0x6580 [ 163.911033][ C1] softirqs last disabled at (0): [<0000000000000000>] 0x0 [ 163.911038][ C1] Preemption disabled at: [ 163.911039][ C1] [<ffffffffacf1964b>] stack_depot_save_flags+0x24b/0x6c0 [ 163.911063][ C1] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G W 6.8.0-rc4-rt4-yocto-preempt-rt+ #3 1e39aa9a737dd024a3275c4f835a872f673a7d3a [ 163.911071][ C1] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.2-0-gea1b7a073390-prebuilt.qemu.org 04/01/2014 [ 163.911075][ C1] Call Trace: [ 163.911078][ C1] <IRQ> [ 163.911080][ C1] dump_stack_lvl+0x88/0xd0 [ 163.911089][ C1] dump_stack+0x10/0x20 [ 163.911095][ C1] __might_resched+0x36f/0x530 [ 163.911105][ C1] rt_spin_lock+0x82/0x1c0 [ 163.911112][ C1] spin_lock_irqsave_ssp_contention+0xb8/0x100 [ 163.911121][ C1] srcu_gp_start_if_needed+0x782/0xf00 [ 163.911128][ C1] ? _raw_spin_unlock_irqrestore+0x46/0x70 [ 163.911136][ C1] ? debug_object_active_state+0x336/0x470 [ 163.911148][ C1] ? __pfx_srcu_gp_start_if_needed+0x10/0x10 [ 163.911156][ C1] ? __pfx_lock_release+0x10/0x10 [ 163.911165][ C1] ? __pfx_rcu_torture_barrier_cbf+0x10/0x10 [ 163.911188][ C1] __call_srcu+0x9f/0xe0 [ 163.911196][ C1] call_srcu+0x13/0x20 [ 163.911201][ C1] srcu_torture_call+0x1b/0x30 [ 163.911224][ C1] rcu_torture_barrier1cb+0x4a/0x60 [ 163.911247][ C1] __flush_smp_call_function_queue+0x267/0xca0 [ 163.911256][ C1] ? __pfx_rcu_torture_barrier1cb+0x10/0x10 [ 163.911281][ C1] generic_smp_call_function_single_interrupt+0x13/0x20 [ 163.911288][ C1] __sysvec_call_function_single+0x7d/0x280 [ 163.911295][ C1] sysvec_call_function_single+0x93/0xd0 [ 163.911302][ C1] </IRQ> [ 163.911304][ C1] <TASK> [ 163.911308][ C1] asm_sysvec_call_function_single+0x1b/0x20 [ 163.911313][ C1] RIP: 0010:default_idle+0x17/0x20 [ 163.911326][ C1] RSP: 0018:ffff888001997dc8 EFLAGS: 00000246 [ 163.911333][ C1] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffffffae618b51 [ 163.911337][ C1] RDX: 0000000000000000 RSI: ffffffffaea80920 RDI: ffffffffaec2de80 [ 163.911342][ C1] RBP: ffff888001997dc8 R08: 0000000000000001 R09: ffffed100d740cad [ 163.911346][ C1] R10: ffffed100d740cac R11: ffff88806ba06563 R12: 0000000000000001 [ 163.911350][ C1] R13: ffffffffafe460c0 R14: ffffffffafe460c0 R15: 0000000000000000 [ 163.911358][ C1] ? ct_kernel_exit.constprop.3+0x121/0x160 [ 163.911369][ C1] ? lockdep_hardirqs_on+0xc4/0x150 [ 163.911376][ C1] arch_cpu_idle+0x9/0x10 [ 163.911383][ C1] default_idle_call+0x7a/0xb0 [ 163.911390][ C1] do_idle+0x362/0x500 [ 163.911398][ C1] ? __pfx_do_idle+0x10/0x10 [ 163.911404][ C1] ? complete_with_flags+0x8b/0xb0 [ 163.911416][ C1] cpu_startup_entry+0x58/0x70 [ 163.911423][ C1] start_secondary+0x221/0x280 [ 163.911430][ C1] ? __pfx_start_secondary+0x10/0x10 [ 163.911440][ C1] secondary_startup_64_no_verify+0x17f/0x18b [ 163.911455][ C1] </TASK> This commit therefore use smp_call_on_cpu() instead of smp_call_function_single(), make rcu_torture_barrier1cb() invoked happens on task-context. Signed-off-by: Zqiang <qiang.zhang1211@gmail.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-06-27 13:49:01 +02:00
..
Kconfig	rcu: Employ jiffies-based backstop to callback time limit	2023-05-11 13:42:39 -07:00
Kconfig.debug	rcu: Allow up to five minutes expedited RCU CPU stall-warning timeouts	2023-01-09 12:09:52 -08:00
Makefile	rcuperf: Change rcuperf to rcuscale	2020-08-24 18:39:24 -07:00
rcu.h	rcu: Introduce rcu_cpu_online()	2024-01-10 17:16:56 +01:00
rcu_segcblist.c	rcu: Throttle callback invocation based on number of ready callbacks	2023-01-03 17:28:34 -08:00
rcu_segcblist.h	rcu: Throttle callback invocation based on number of ready callbacks	2023-01-03 17:28:34 -08:00
rcuscale.c	rcuscale: Move rcu_scale_writer() schedule_timeout_uninterruptible() to _idle()	2023-07-14 15:01:49 -07:00
rcutorture.c	rcutorture: Fix invalid context warning when enable srcu barrier testing	2024-06-27 13:49:01 +02:00
refscale.c	refscale: Add a "jiffies" test	2023-07-14 15:01:04 -07:00
srcutiny.c	rcu: Annotate SRCU's update-side lockdep dependencies	2023-03-27 11:15:59 -07:00
srcutree.c	srcu: Only accelerate on enqueue time	2023-11-28 17:19:36 +00:00
sync.c	rcu/sync: Use call_rcu_hurry() instead of call_rcu	2022-11-29 14:04:33 -08:00
tasks.h	rcu-tasks: Fix show_rcu_tasks_trace_gp_kthread buffer overflow	2024-06-12 11:11:32 +02:00
tiny.c	rcu: Refactor kvfree_call_rcu() and high-level helpers	2023-01-03 17:48:40 -08:00
tree.c	rcu/exp: Handle RCU expedited grace period kworker allocation failure	2024-03-26 18:19:17 -04:00
tree.h	rcu/tree: Defer setting of jiffies during stall reset	2023-11-28 17:20:02 +00:00
tree_exp.h	rcu/exp: Handle RCU expedited grace period kworker allocation failure	2024-03-26 18:19:17 -04:00
tree_nocb.h	rcu/nocb: Fix WARN_ON_ONCE() in the rcu_nocb_bypass_lock()	2024-04-13 13:07:34 +02:00
tree_plugin.h	rcu: Mark additional concurrent load from ->cpu_no_qs.b.exp	2023-05-11 13:42:39 -07:00
tree_stall.h	rcu: Fix buffer overflow in print_cpu_stall_info()	2024-06-12 11:11:32 +02:00
update.c	Merge branch 'stall.2023.01.09a' into HEAD	2023-02-02 16:40:07 -08:00