Hello Zhe,
I am not familiar on the conditions to backport patches, but I think [1]
was not considered as 'fixes' patches. There has also been multiple fixes on top it.
The latest Yocto branch is using v6.1.15. [1] when using Device Tree also requires that
the device tree is correctly populated (no 'cache-level' property missing). They were added
in v6.2.y and would also need to be backported for the splat to disappear.
Cf commit 3b450831e5f1 ("arm64: dts: Update cache properties for freescale")
There is currently an effort to have a stable cacheinfo setup in v6.3.2 at [2].
Also, I am not sure the etm_starting_cpu/etm_dying_cpu sleeping bug is related to the cacheinfo fixes.
Regards,
Pierre
[1] https://lore.kernel.org/all/20230104183033.755668-1-pierre.gondois@xxxxxxx/
[2] https://lore.kernel.org/stable/20230530201955.848176-1-florian.fainelli@xxxxxxxxxxxx/
On 5/31/23 10:43, He Zhe wrote:
Hi,
Recently we still observed the same and seemingly similar call traces in v6.1.
Will the fixes in v6.3 be backed ported to v6.1? or do we have plan to fix for
v6.1? Thanks.
BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:46
in_atomic(): 1, irqs_disabled(): 128, non_block: 0, pid: 0, name: swapper/1
preempt_count: 1, expected: 0
RCU nest depth: 1, expected: 1
Preemption disabled at:
[<ffffffc00820ff14>] __create_object+0x110/0x380
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.1.27-rt7-yocto-preempt-rt #1
Hardware name: NXP S32G399A-RDB3 (DT)
Call trace:
dump_backtrace.part.0+0xc8/0xd4
show_stack+0x20/0x30
dump_stack_lvl+0x6c/0x88
dump_stack+0x18/0x34
__might_resched+0x160/0x1c0
rt_spin_lock+0x38/0xb0
rmqueue_bulk+0x68/0x920
get_page_from_freelist+0xd18/0x11f0
__alloc_pages+0x164/0x10d0
new_slab+0x2f0/0x454
___slab_alloc+0x4b0/0xb90
__kmem_cache_alloc_node+0xe0/0x38c
__kmalloc+0x6c/0x1d0
detect_cache_attributes+0x458/0x570
update_siblings_masks+0x30/0x274
store_cpu_topology+0x48/0x60
secondary_start_kernel+0xd0/0x130
__secondary_switched+0xb0/0xb4
[ 2381.971932] BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:46
[ 2381.971949] in_atomic(): 1, irqs_disabled(): 128, non_block: 0, pid: 25, name: migration/1
[ 2381.971959] preempt_count: 1, expected: 0
[ 2381.971964] RCU nest depth: 0, expected: 0
[ 2381.971969] 1 lock held by migration/1/25:
[ 2381.971975] #0: 869aa87c (&drvdata->spinlock#4){....}-{2:2}, at: etm_dying_cpu+0x2c/0x58
[ 2381.972020] Preemption disabled at:
[ 2381.972023] [<80229ab0>] cpu_stopper_thread+0x90/0x13c
[ 2381.972048] CPU: 1 PID: 25 Comm: migration/1 Not tainted 6.1.29-rt10-yocto-preempt-rt #1
[ 2381.972061] Hardware name: Xilinx Zynq Platform
[ 2381.972066] Stopper: multi_cpu_stop+0x0/0x184 <- stop_machine_cpuslocked+0x130/0x1ac
[ 2381.972101] unwind_backtrace from show_stack+0x18/0x1c
[ 2381.972136] show_stack from dump_stack_lvl+0x60/0x90
[ 2381.972172] dump_stack_lvl from __might_resched+0x184/0x1c4
[ 2381.972201] __might_resched from rt_spin_lock+0x54/0xb0
[ 2381.972227] rt_spin_lock from etm_dying_cpu+0x2c/0x58
[ 2381.972251] etm_dying_cpu from cpuhp_invoke_callback+0x188/0x370
[ 2381.972276] cpuhp_invoke_callback from __cpuhp_invoke_callback_range+0x74/0x100
[ 2381.972300] __cpuhp_invoke_callback_range from take_cpu_down+0x74/0xb0
[ 2381.972323] take_cpu_down from multi_cpu_stop+0x84/0x184
[ 2381.972349] multi_cpu_stop from cpu_stopper_thread+0x98/0x13c
[ 2381.972374] cpu_stopper_thread from smpboot_thread_fn+0x19c/0x320
[ 2381.972400] smpboot_thread_fn from kthread+0xf0/0x128
[ 2381.972427] kthread from ret_from_fork+0x14/0x2c
[ 2381.972447] Exception stack(0xc087dfb0 to 0xc087dff8)
[ 2381.972458] dfa0: 00000000 00000000 00000000 00000000
[ 2381.972470] dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 2381.972481] dfe0: 00000000 00000000 00000000 00000000 00000013 00000000
[ 2384.412614] BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:46
[ 2384.412632] in_atomic(): 1, irqs_disabled(): 128, non_block: 0, pid: 0, name: swapper/1
[ 2384.412641] preempt_count: 1, expected: 0
[ 2384.412646] RCU nest depth: 0, expected: 0
[ 2384.412651] 1 lock held by swapper/1/0:
[ 2384.412658] #0: 869aa87c (&drvdata->spinlock#4){....}-{2:2}, at: etm_starting_cpu+0x2c/0xcc
[ 2384.412703] Preemption disabled at:
[ 2384.412706] [<00000000>] 0x0
[ 2384.412724] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G W 6.1.29-rt10-yocto-preempt-rt #1
[ 2384.412738] Hardware name: Xilinx Zynq Platform
[ 2384.412747] unwind_backtrace from show_stack+0x18/0x1c
[ 2384.412784] show_stack from dump_stack_lvl+0x60/0x90
[ 2384.412821] dump_stack_lvl from __might_resched+0x184/0x1c4
[ 2384.412852] __might_resched from rt_spin_lock+0x54/0xb0
[ 2384.412879] rt_spin_lock from etm_starting_cpu+0x2c/0xcc
[ 2384.412903] etm_starting_cpu from cpuhp_invoke_callback+0x188/0x370
[ 2384.412928] cpuhp_invoke_callback from __cpuhp_invoke_callback_range+0x74/0x100
[ 2384.412952] __cpuhp_invoke_callback_range from notify_cpu_starting+0x78/0xb8
[ 2384.412978] notify_cpu_starting from secondary_start_kernel+0xe0/0x160
[ 2384.413006] secondary_start_kernel from 0x102160
[ 0.000000] Linux version 6.1.29-rt10-yocto-preempt-rt (oe-user@oe-host) (aarch64-wrs-linux-gcc (GCC) 12.2.0, GNU ld (GNU Binutils) 2.40.20230119) #1 SMP PREEMPT_RT Wed May 24 02:08:59 UTC 2023
[ 1.014167] BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:46
[ 1.014173] in_atomic(): 1, irqs_disabled(): 128, non_block: 0, pid: 0, name: swapper/1
[ 1.014178] preempt_count: 1, expected: 0
[ 1.014181] RCU nest depth: 0, expected: 0
[ 1.014185] 1 lock held by swapper/1/0:
[ 1.014189] #0: ffffff88000008e0 (&n->list_lock){..}-{2:2}, at: get_partial_node+0x4c/0x3dc
[ 1.014229] irq event stamp: 0
[ 1.014231] hardirqs last enabled at (0): [<0000000000000000>] 0x0
[ 1.014239] hardirqs last disabled at (0): [<ffffffc0080431fc>] copy_process+0x65c/0x1424
[ 1.014254] softirqs last enabled at (0): [<ffffffc0080431fc>] copy_process+0x65c/0x1424
[ 1.014264] softirqs last disabled at (0): [<0000000000000000>] 0x0
[ 1.014270] Preemption disabled at:
[ 1.014272] [<ffffffc00831f660>] __create_object+0x12c/0x39c
[ 1.014288] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.1.29-rt10-yocto-preempt-rt #1
[ 1.014295] Hardware name: Freescale S32G399A (DT)
[ 1.014300] Call trace:
[ 1.014303] dump_backtrace.part.0+0xcc/0xe0
[ 1.014311] show_stack+0x20/0x30
[ 1.014317] dump_stack_lvl+0xac/0xf0
[ 1.014330] dump_stack+0x18/0x34
[ 1.014339] __might_resched+0x180/0x230
[ 1.014352] rt_spin_lock+0x64/0x110
[ 1.014363] get_partial_node+0x4c/0x3dc
[ 1.014373] ___slab_alloc+0x328/0x714
[ 1.014382] __kmem_cache_alloc_node+0x10c/0x260
[ 1.014390] __kmalloc+0x68/0x104
[ 1.014400] detect_cache_attributes+0x98/0x104
[ 1.014409] update_siblings_masks+0x30/0x350
[ 1.014420] store_cpu_topology+0x44/0x90
[ 1.014430] secondary_start_kernel+0xd4/0x134
[ 1.014439] __secondary_switched+0xb0/0xb4
Zhe
