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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: [] __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): [] copy_process+0x65c/0x1424 [ 1.014254] softirqs last enabled at (0): [] copy_process+0x65c/0x1424 [ 1.014264] softirqs last disabled at (0): [<0000000000000000>] 0x0 [ 1.014270] Preemption disabled at: [ 1.014272] [] __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