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[ 32.368276][ T1] [ 32.368276][ T1] other info that might help us debug this: [ 32.368276][ T1] [ 32.380345][ T1] [ 32.380345][ T1] rcu_scheduler_active = 1, debug_locks = 1 [ 32.388591][ T1] no locks held by swapper/0/1. [ 32.396226][ T1] [ 32.396226][ T1] stack backtrace: [ 32.407490][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.19.0-rc6-00038-g30ab12541721 #1 PREEMPT(lazy) ee572ab8f687c1542b07763f9752287d1f4e4afc [ 32.407911][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 32.408074][ T1] Call Trace: [ 32.408201][ T1] [ 32.408359][ T1] dump_stack_lvl (lib/dump_stack.c:122) [ 32.408918][ T1] lockdep_rcu_suspicious.cold (kernel/locking/lockdep.c:6877) [ 32.409462][ T1] mas_start (lib/maple_tree.c:780 (discriminator 11) lib/maple_tree.c:1200 (discriminator 11)) [ 32.410053][ T1] mas_walk (lib/maple_tree.c:3291 lib/maple_tree.c:4599) [ 32.410496][ T1] mas_find (lib/maple_tree.c:5578 lib/maple_tree.c:5618) [ 32.410919][ T1] dynamic_debug_init (lib/dynamic_debug.c:1780 (discriminator 1)) [ 32.411406][ T1] ? dynamic_debug_init_control (lib/dynamic_debug.c:1739) [ 32.411658][ T1] ? mix_pool_bytes (drivers/char/random.c:943) [ 32.411658][ T1] ? ftrace_likely_update (arch/x86/include/asm/smap.h:90 kernel/trace/trace_branch.c:223) [ 32.411658][ T1] ? dynamic_debug_init_control (lib/dynamic_debug.c:1724) [ 32.411658][ T1] ? ftrace_likely_update (arch/x86/include/asm/smap.h:90 kernel/trace/trace_branch.c:223) [ 32.411658][ T1] ? dynamic_debug_init_control (lib/dynamic_debug.c:1739) [ 32.411658][ T1] do_one_initcall (init/main.c:1378) [ 32.411658][ T1] ? trace_event_raw_event_initcall_level (init/main.c:1369) [ 32.411658][ T1] ? ftrace_likely_update (arch/x86/include/asm/smap.h:90 kernel/trace/trace_branch.c:223) [ 32.411658][ T1] kernel_init_freeable (init/main.c:1483 (discriminator 3) init/main.c:1677 (discriminator 3)) [ 32.411658][ T1] ? rest_init (init/main.c:1570) [ 32.411658][ T1] kernel_init (init/main.c:1580) [ 32.411658][ T1] ? rest_init (init/main.c:1570) [ 32.411658][ T1] ret_from_fork (arch/x86/kernel/process.c:164) [ 32.411658][ T1] ? exit_thread (arch/x86/kernel/process.c:153) [ 32.411658][ T1] ? __switch_to (arch/x86/kernel/process_64.c:714) [ 32.411658][ T1] ? rest_init (init/main.c:1570) [ 32.411658][ T1] ret_from_fork_asm (arch/x86/entry/entry_64.S:256) [ 32.411658][ T1] [ 32.411830][ T1] [ 32.419179][ T1] ============================= [ 32.426199][ T1] WARNING: suspicious RCU usage [ 32.435290][ T1] 6.19.0-rc6-00038-g30ab12541721 #1 Not tainted [ 32.445187][ T1] ----------------------------- [ 32.456097][ T1] lib/maple_tree.c:736 suspicious rcu_dereference_check() usage! [ 32.467775][ T1] [ 32.467775][ T1] other info that might help us debug this: [ 32.467775][ T1] [ 32.480434][ T1] [ 32.480434][ T1] rcu_scheduler_active = 1, debug_locks = 1 [ 32.488625][ T1] no locks held by swapper/0/1. [ 32.496517][ T1] [ 32.496517][ T1] stack backtrace: [ 32.507460][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.19.0-rc6-00038-g30ab12541721 #1 PREEMPT(lazy) ee572ab8f687c1542b07763f9752287d1f4e4afc [ 32.507944][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 32.508107][ T1] Call Trace: [ 32.508235][ T1] [ 32.508394][ T1] dump_stack_lvl (lib/dump_stack.c:122) [ 32.508885][ T1] lockdep_rcu_suspicious.cold (kernel/locking/lockdep.c:6877) [ 32.509405][ T1] mtree_range_walk (lib/maple_tree.c:736 (discriminator 11) lib/maple_tree.c:2579 (discriminator 11)) [ 32.510345][ T1] mas_walk (lib/maple_tree.c:3298 lib/maple_tree.c:4599) [ 32.510799][ T1] mas_find (lib/maple_tree.c:5578 lib/maple_tree.c:5618) [ 32.511222][ T1] dynamic_debug_init (lib/dynamic_debug.c:1780 (discriminator 1)) [ 32.511658][ T1] ? dynamic_debug_init_control (lib/dynamic_debug.c:1739) [ 32.511658][ T1] ? mix_pool_bytes (drivers/char/random.c:943) [ 32.511658][ T1] ? ftrace_likely_update (arch/x86/include/asm/smap.h:90 kernel/trace/trace_branch.c:223) [ 32.511658][ T1] ? dynamic_debug_init_control (lib/dynamic_debug.c:1724) [ 32.511658][ T1] ? ftrace_likely_update (arch/x86/include/asm/smap.h:90 kernel/trace/trace_branch.c:223) [ 32.511658][ T1] ? dynamic_debug_init_control (lib/dynamic_debug.c:1739) [ 32.511658][ T1] do_one_initcall (init/main.c:1378) [ 32.511658][ T1] ? trace_event_raw_event_initcall_level (init/main.c:1369) [ 32.511658][ T1] ? ftrace_likely_update (arch/x86/include/asm/smap.h:90 kernel/trace/trace_branch.c:223) [ 32.511658][ T1] kernel_init_freeable (init/main.c:1483 (discriminator 3) init/main.c:1677 (discriminator 3)) [ 32.511658][ T1] ? rest_init (init/main.c:1570) [ 32.511658][ T1] kernel_init (init/main.c:1580) [ 32.511658][ T1] ? rest_init (init/main.c:1570) [ 32.511658][ T1] ret_from_fork (arch/x86/kernel/process.c:164) [ 32.511658][ T1] ? exit_thread (arch/x86/kernel/process.c:153) [ 32.511658][ T1] ? __switch_to (arch/x86/kernel/process_64.c:714) [ 32.511658][ T1] ? rest_init (init/main.c:1570) [ 32.511658][ T1] ret_from_fork_asm (arch/x86/entry/entry_64.S:256) [ 32.511658][ T1] [ 32.828822][ T1] smp: Bringing up secondary CPUs ... [ 32.969794][ T1] smpboot: x86: Booting SMP configuration: [ 32.977793][ T1] .... node #0, CPUs: #1 [ 2.080306][ T0] Masked ExtINT on CPU#1 [ 33.013768][ T1] smp: Brought up 1 node, 2 CPUs [ 33.036220][ T1] smpboot: Total of 2 processors activated (9575.99 BogoMIPS) [ 67.945088][ T30] node 0 deferred pages initialised in 34870ms [ 67.974864][ T1] Memory: 28397356K/33553912K available (63758K kernel code, 23006K rwdata, 18392K rodata, 3328K init, 14332K bss, 5145876K reserved, 0K cma-reserved) The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20260121/202601211325.c04e2734-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki