[ 16.534033][ C2] [ 16.534269][ C2] ================================ [ 16.534644][ C2] WARNING: inconsistent lock state [ 16.535018][ C2] 6.15.0-virtme #1 Not tainted [ 16.535397][ C2] -------------------------------- [ 16.535769][ C2] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. [ 16.536227][ C2] ksft_runner.sh/259 [HC0[0]:SC1[1]:HE1:SE0] takes: [ 16.536696][ C2] ffffffffa6bc5af8 (pin_fs_lock){+.?.}-{3:3}, at: simple_pin_fs+0x24/0x150 [ 16.537381][ C2] {SOFTIRQ-ON-W} state was registered at: [ 16.537751][ C2] __lock_acquire+0x20b/0x7e0 [ 16.538107][ C2] lock_acquire.part.0+0xb6/0x240 [ 16.538451][ C2] _raw_spin_lock+0x33/0x40 [ 16.538815][ C2] simple_pin_fs+0x24/0x150 [ 16.539176][ C2] start_creating.part.0+0x52/0x310 [ 16.539542][ C2] debugfs_create_dir+0x6a/0x540 [ 16.539880][ C2] component_debug_init+0x17/0x30 [ 16.540254][ C2] do_one_initcall+0x8f/0x1e0 [ 16.540632][ C2] do_initcalls+0x176/0x280 [ 16.541009][ C2] kernel_init_freeable+0x22d/0x300 [ 16.541369][ C2] kernel_init+0x20/0x200 [ 16.541730][ C2] ret_from_fork+0x240/0x320 [ 16.542124][ C2] ret_from_fork_asm+0x1a/0x30 [ 16.542489][ C2] irq event stamp: 2858 [ 16.542767][ C2] hardirqs last enabled at (2858): [] _raw_spin_unlock_irqrestore+0x5d/0x80 [ 16.543503][ C2] hardirqs last disabled at (2857): [] _raw_spin_lock_irqsave+0x5b/0x60 [ 16.544156][ C2] softirqs last enabled at (1386): [] handle_softirqs+0x358/0x620 [ 16.544799][ C2] softirqs last disabled at (2371): [] __irq_exit_rcu+0xfa/0x160 [ 16.545460][ C2] [ 16.545460][ C2] other info that might help us debug this: [ 16.546012][ C2] Possible unsafe locking scenario: [ 16.546012][ C2] [ 16.546557][ C2] CPU0 [ 16.546833][ C2] ---- [ 16.547111][ C2] lock(pin_fs_lock); [ 16.547391][ C2] [ 16.547662][ C2] lock(pin_fs_lock); [ 16.547969][ C2] [ 16.547969][ C2] *** DEADLOCK *** [ 16.547969][ C2] [ 16.548513][ C2] 5 locks held by ksft_runner.sh/259: [ 16.548875][ C2] #0: ffff888009106ab8 (&sig->cred_guard_mutex){+.+.}-{4:4}, at: bprm_execve+0x4f/0x490 [ 16.549540][ C2] #1: ffff888009106b50 (&sig->exec_update_lock){++++}-{4:4}, at: exec_mmap+0x8c/0x840 [ 16.550208][ C2] #2: ffff88800a418220 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x190/0x800 [ 16.550877][ C2] #3: ffff88800a458b00 (&anon_vma->rwsem){+.+.}-{4:4}, at: unlink_anon_vmas+0x1df/0x920 [ 16.551536][ C2] #4: ffffffffa69774c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch+0x2e4/0xf20 [ 16.552188][ C2] [ 16.552188][ C2] stack backtrace: [ 16.552646][ C2] CPU: 2 UID: 0 PID: 259 Comm: ksft_runner.sh Not tainted 6.15.0-virtme #1 PREEMPT(full) [ 16.552654][ C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 16.552657][ C2] Call Trace: [ 16.552659][ C2] [ 16.552661][ C2] dump_stack_lvl+0x82/0xd0 [ 16.552669][ C2] print_usage_bug.part.0+0x25f/0x360 [ 16.552677][ C2] mark_lock_irq+0x343/0x400 [ 16.552685][ C2] ? __pfx_unwind_next_frame+0x10/0x10 [ 16.552692][ C2] ? save_trace+0x52/0x170 [ 16.552701][ C2] mark_lock+0x174/0x2f0 [ 16.552706][ C2] mark_usage+0x46/0x150 [ 16.552711][ C2] __lock_acquire+0x20b/0x7e0 [ 16.552716][ C2] ? __lock_acquire+0x44d/0x7e0 [ 16.552722][ C2] lock_acquire.part.0+0xb6/0x240 [ 16.552727][ C2] ? simple_pin_fs+0x24/0x150 [ 16.552734][ C2] ? rcu_is_watching+0x12/0xc0 [ 16.552741][ C2] ? lock_acquire+0x10c/0x170 [ 16.552745][ C2] ? simple_pin_fs+0x24/0x150 [ 16.552752][ C2] _raw_spin_lock+0x33/0x40 [ 16.552759][ C2] ? simple_pin_fs+0x24/0x150 [ 16.552763][ C2] simple_pin_fs+0x24/0x150 [ 16.552769][ C2] debugfs_remove+0x35/0x70 [ 16.552775][ C2] ref_tracker_dir_exit+0xcf/0x740 [ 16.552782][ C2] ? __pfx_ref_tracker_free+0x10/0x10 [ 16.552788][ C2] ? __sk_destruct+0x383/0x780 [ 16.552795][ C2] ? rcu_do_batch+0x34c/0xf20 [ 16.552801][ C2] ? __pfx_ref_tracker_dir_exit+0x10/0x10 [ 16.552806][ C2] ? irq_exit_rcu+0xe/0x30 [ 16.552812][ C2] ? sysvec_apic_timer_interrupt+0xa8/0xc0 [ 16.552818][ C2] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 16.552824][ C2] ? _raw_spin_unlock_irqrestore+0x41/0x80 [ 16.552829][ C2] ? __delete_object+0x30/0x60 [ 16.552836][ C2] ? kmem_cache_free+0x221/0x330 [ 16.552842][ C2] ? unlink_anon_vmas+0x167/0x920 [ 16.552847][ C2] ? free_pgtables+0x25b/0x6e0 [ 16.552853][ C2] ? exit_mmap+0x30d/0x800 [ 16.552859][ C2] ? mmput+0xb8/0x3f0 [ 16.552863][ C2] ? exec_mmap+0x416/0x840 [ 16.552873][ C2] __put_net+0x19/0x60 [ 16.552878][ C2] __sk_destruct+0x58a/0x780 [ 16.552885][ C2] ? rcu_do_batch+0x34a/0xf20 [ 16.552890][ C2] rcu_do_batch+0x34c/0xf20 [ 16.552896][ C2] ? find_held_lock+0x2b/0x80 [ 16.552904][ C2] ? __pfx_rcu_do_batch+0x10/0x10 [ 16.552910][ C2] ? mark_held_locks+0x49/0x80 [ 16.552914][ C2] ? note_gp_changes+0x182/0x1e0 [ 16.552919][ C2] ? lockdep_hardirqs_on+0x7c/0x110 [ 16.552925][ C2] rcu_core+0x2bb/0x500 [ 16.552932][ C2] handle_softirqs+0x218/0x620 [ 16.552941][ C2] __irq_exit_rcu+0xfa/0x160 [ 16.552946][ C2] irq_exit_rcu+0xe/0x30 [ 16.552951][ C2] sysvec_apic_timer_interrupt+0xa8/0xc0 [ 16.552957][ C2] [ 16.552959][ C2] [ 16.552962][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 16.552967][ C2] RIP: 0010:_raw_spin_unlock_irqrestore+0x41/0x80 [ 16.552974][ C2] Code: 74 24 10 e8 c1 1e 83 fd 48 89 ef e8 79 71 83 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 fa 6e 77 fd 65 8b 05 13 6d 97 02 85 c0 74 0e 5b 5d c3 cc cc cc [ 16.552978][ C2] RSP: 0018:ffffc90000ad7748 EFLAGS: 00000206 [ 16.552984][ C2] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 0000000000000040 [ 16.552987][ C2] RDX: 0000000000000000 RSI: ffffffffa648f4e4 RDI: 0000000000000001 [ 16.552990][ C2] RBP: ffff888009298890 R08: 0000000000000001 R09: 0000000000000001 [ 16.552994][ C2] R10: ffffffffa73e68d7 R11: ffff8880092988a8 R12: ffffea000015dbc0 [ 16.552997][ C2] R13: 0000000000026187 R14: 0000000000000000 R15: ffff888001942040 [ 16.553009][ C2] __delete_object+0x30/0x60 [ 16.553015][ C2] kmem_cache_free+0x221/0x330 [ 16.553020][ C2] ? unlink_anon_vmas+0x167/0x920 [ 16.553028][ C2] unlink_anon_vmas+0x167/0x920 [ 16.553037][ C2] free_pgtables+0x25b/0x6e0 [ 16.553047][ C2] ? __pfx_free_pgtables+0x10/0x10 [ 16.553051][ C2] ? lock_acquire+0x10c/0x170 [ 16.553056][ C2] ? exit_mmap+0x190/0x800 [ 16.553063][ C2] ? down_write+0x152/0x210 [ 16.553068][ C2] ? __pfx_down_write+0x10/0x10 [ 16.553077][ C2] exit_mmap+0x30d/0x800 [ 16.553085][ C2] ? __pfx_exit_mmap+0x10/0x10 [ 16.553097][ C2] ? __mutex_unlock_slowpath+0x144/0x400 [ 16.553113][ C2] mmput+0xb8/0x3f0 [ 16.553120][ C2] exec_mmap+0x416/0x840 [ 16.553127][ C2] ? rcu_is_watching+0x12/0xc0 [ 16.553132][ C2] begin_new_exec+0x3ae/0x15f0 [ 16.553142][ C2] load_elf_binary+0x634/0x2960 [ 16.553152][ C2] ? __lock_acquire+0x44d/0x7e0 [ 16.553162][ C2] ? find_held_lock+0x2b/0x80 [ 16.553168][ C2] ? __pfx_load_elf_binary+0x10/0x10 [ 16.553173][ C2] ? exec_binprm+0x237/0x640 [ 16.553184][ C2] exec_binprm+0x255/0x640 [ 16.553193][ C2] ? __pfx_exec_binprm+0x10/0x10 [ 16.553198][ C2] ? bprm_execve+0x93/0x490 [ 16.553209][ C2] bprm_execve+0x1af/0x490 [ 16.553216][ C2] do_execveat_common.isra.0+0x3f5/0x550 [ 16.553226][ C2] __x64_sys_execve+0x8e/0xb0 [ 16.553233][ C2] do_syscall_64+0xc1/0x380 [ 16.553240][ C2] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 16.553245][ C2] RIP: 0033:0x7f6acfb8740b [ 16.553255][ C2] Code: Unable to access opcode bytes at 0x7f6acfb873e1. [ 16.553258][ C2] RSP: 002b:00007ffca29ecc18 EFLAGS: 00000246 ORIG_RAX: 000000000000003b [ 16.553263][ C2] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6acfb8740b [ 16.553266][ C2] RDX: 00005619acc08620 RSI: 00005619acbfbd70 RDI: 00005619acc09140 [ 16.553270][ C2] RBP: 00005619acc09140 R08: 00005619acc08210 R09: 0000000000000020 [ 16.553273][ C2] R10: 00000000000001b6 R11: 0000000000000246 R12: 00000000ffffffff [ 16.553276][ C2] R13: 00005619acbfbd70 R14: 00005619acc08620 R15: 00005619acbf7650 [ 16.553288][ C2] [ 16.593735][ C2] BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:1576 [ 16.594398][ C2] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 259, name: ksft_runner.sh [ 16.595027][ C2] preempt_count: 101, expected: 0 [ 16.595394][ C2] RCU nest depth: 0, expected: 0 [ 16.595759][ C2] INFO: lockdep is turned off. [ 16.596135][ C2] Preemption disabled at: [ 16.596139][ C2] [<0000000000000000>] 0x0 [ 16.597039][ C2] CPU: 2 UID: 0 PID: 259 Comm: ksft_runner.sh Not tainted 6.15.0-virtme #1 PREEMPT(full) [ 16.597046][ C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 16.597050][ C2] Call Trace: [ 16.597052][ C2] [ 16.597055][ C2] dump_stack_lvl+0xb0/0xd0 [ 16.597066][ C2] __might_resched+0x360/0x5a0 [ 16.597077][ C2] down_write+0x72/0x210 [ 16.597085][ C2] ? __pfx_down_write+0x10/0x10 [ 16.597090][ C2] ? simple_recursive_removal+0x33/0x610 [ 16.597095][ C2] ? rcu_is_watching+0x12/0xc0 [ 16.597103][ C2] ? do_raw_spin_unlock+0x58/0x220 [ 16.597112][ C2] simple_recursive_removal+0x6a/0x610 [ 16.597117][ C2] ? do_raw_spin_unlock+0x58/0x220 [ 16.597122][ C2] ? __pfx_remove_one+0x10/0x10 [ 16.597132][ C2] debugfs_remove+0x44/0x70 [ 16.597137][ C2] ref_tracker_dir_exit+0xcf/0x740 [ 16.597146][ C2] ? __pfx_ref_tracker_free+0x10/0x10 [ 16.597152][ C2] ? __sk_destruct+0x383/0x780 [ 16.597159][ C2] ? rcu_do_batch+0x34c/0xf20 [ 16.597165][ C2] ? __pfx_ref_tracker_dir_exit+0x10/0x10 [ 16.597169][ C2] ? irq_exit_rcu+0xe/0x30 [ 16.597176][ C2] ? sysvec_apic_timer_interrupt+0xa8/0xc0 [ 16.597183][ C2] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 16.597189][ C2] ? _raw_spin_unlock_irqrestore+0x41/0x80 [ 16.597195][ C2] ? __delete_object+0x30/0x60 [ 16.597201][ C2] ? kmem_cache_free+0x221/0x330 [ 16.597209][ C2] ? unlink_anon_vmas+0x167/0x920 [ 16.597215][ C2] ? free_pgtables+0x25b/0x6e0 [ 16.597221][ C2] ? exit_mmap+0x30d/0x800 [ 16.597226][ C2] ? mmput+0xb8/0x3f0 [ 16.597231][ C2] ? exec_mmap+0x416/0x840 [ 16.597242][ C2] __put_net+0x19/0x60 [ 16.597248][ C2] __sk_destruct+0x58a/0x780 [ 16.597254][ C2] ? rcu_do_batch+0x34a/0xf20 [ 16.597258][ C2] rcu_do_batch+0x34c/0xf20 [ 16.597264][ C2] ? find_held_lock+0x2b/0x80 [ 16.597272][ C2] ? __pfx_rcu_do_batch+0x10/0x10 [ 16.597279][ C2] ? mark_held_locks+0x49/0x80 [ 16.597284][ C2] ? note_gp_changes+0x182/0x1e0 [ 16.597288][ C2] ? lockdep_hardirqs_on+0x7c/0x110 [ 16.597296][ C2] rcu_core+0x2bb/0x500 [ 16.597303][ C2] handle_softirqs+0x218/0x620 [ 16.597313][ C2] __irq_exit_rcu+0xfa/0x160 [ 16.597317][ C2] irq_exit_rcu+0xe/0x30 [ 16.597322][ C2] sysvec_apic_timer_interrupt+0xa8/0xc0 [ 16.597328][ C2] [ 16.597330][ C2] [ 16.597333][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 16.597338][ C2] RIP: 0010:_raw_spin_unlock_irqrestore+0x41/0x80 [ 16.597345][ C2] Code: 74 24 10 e8 c1 1e 83 fd 48 89 ef e8 79 71 83 fd 81 e3 00 02 00 00 75 29 9c 58 f6 c4 02 75 35 48 85 db 74 01 fb bf 01 00 00 00 fa 6e 77 fd 65 8b 05 13 6d 97 02 85 c0 74 0e 5b 5d c3 cc cc cc [ 16.597350][ C2] RSP: 0018:ffffc90000ad7748 EFLAGS: 00000206 [ 16.597355][ C2] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 0000000000000040 [ 16.597359][ C2] RDX: 0000000000000000 RSI: ffffffffa648f4e4 RDI: 0000000000000001 [ 16.597362][ C2] RBP: ffff888009298890 R08: 0000000000000001 R09: 0000000000000001 [ 16.597365][ C2] R10: ffffffffa73e68d7 R11: ffff8880092988a8 R12: ffffea000015dbc0 [ 16.597369][ C2] R13: 0000000000026187 R14: 0000000000000000 R15: ffff888001942040 [ 16.597382][ C2] __delete_object+0x30/0x60 [ 16.597388][ C2] kmem_cache_free+0x221/0x330 [ 16.597394][ C2] ? unlink_anon_vmas+0x167/0x920 [ 16.597401][ C2] unlink_anon_vmas+0x167/0x920 [ 16.597411][ C2] free_pgtables+0x25b/0x6e0 [ 16.597420][ C2] ? __pfx_free_pgtables+0x10/0x10 [ 16.597425][ C2] ? lock_acquire+0x10c/0x170 [ 16.597430][ C2] ? exit_mmap+0x190/0x800 [ 16.597438][ C2] ? down_write+0x152/0x210 [ 16.597443][ C2] ? __pfx_down_write+0x10/0x10 [ 16.597453][ C2] exit_mmap+0x30d/0x800 [ 16.597461][ C2] ? __pfx_exit_mmap+0x10/0x10 [ 16.597473][ C2] ? __mutex_unlock_slowpath+0x144/0x400 [ 16.597490][ C2] mmput+0xb8/0x3f0 [ 16.597496][ C2] exec_mmap+0x416/0x840 [ 16.597503][ C2] ? rcu_is_watching+0x12/0xc0 [ 16.597510][ C2] begin_new_exec+0x3ae/0x15f0 [ 16.597519][ C2] load_elf_binary+0x634/0x2960 [ 16.597531][ C2] ? __lock_acquire+0x44d/0x7e0 [ 16.597540][ C2] ? find_held_lock+0x2b/0x80 [ 16.597547][ C2] ? __pfx_load_elf_binary+0x10/0x10 [ 16.597552][ C2] ? exec_binprm+0x237/0x640 [ 16.597563][ C2] exec_binprm+0x255/0x640 [ 16.597572][ C2] ? __pfx_exec_binprm+0x10/0x10 [ 16.597577][ C2] ? bprm_execve+0x93/0x490 [ 16.597588][ C2] bprm_execve+0x1af/0x490 [ 16.597595][ C2] do_execveat_common.isra.0+0x3f5/0x550 [ 16.597605][ C2] __x64_sys_execve+0x8e/0xb0 [ 16.597612][ C2] do_syscall_64+0xc1/0x380 [ 16.597618][ C2] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 16.597623][ C2] RIP: 0033:0x7f6acfb8740b [ 16.597633][ C2] Code: Unable to access opcode bytes at 0x7f6acfb873e1. [ 16.597636][ C2] RSP: 002b:00007ffca29ecc18 EFLAGS: 00000246 ORIG_RAX: 000000000000003b [ 16.597640][ C2] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6acfb8740b [ 16.597644][ C2] RDX: 00005619acc08620 RSI: 00005619acbfbd70 RDI: 00005619acc09140 [ 16.597647][ C2] RBP: 00005619acc09140 R08: 00005619acc08210 R09: 0000000000000020 [ 16.597650][ C2] R10: 00000000000001b6 R11: 0000000000000246 R12: 00000000ffffffff [ 16.597654][ C2] R13: 00005619acbfbd70 R14: 00005619acc08620 R15: 00005619acbf7650 [ 16.597665][ C2] [ 18.858952][ C3] BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:1576 [ 18.859479][ C3] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 32, name: ksoftirqd/3 [ 18.859968][ C3] preempt_count: 100, expected: 0 [ 18.860242][ C3] RCU nest depth: 0, expected: 0 [ 18.860474][ C3] INFO: lockdep is turned off. [ 18.860746][ C3] Preemption disabled at: [ 18.860749][ C3] [] handle_softirqs+0xe5/0x620 [ 18.861337][ C3] CPU: 3 UID: 0 PID: 32 Comm: ksoftirqd/3 Tainted: G W 6.15.0-virtme #1 PREEMPT(full) [ 18.861346][ C3] Tainted: [W]=WARN [ 18.861349][ C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 18.861352][ C3] Call Trace: [ 18.861355][ C3] [ 18.861358][ C3] dump_stack_lvl+0xb0/0xd0 [ 18.861368][ C3] __might_resched+0x360/0x5a0 [ 18.861379][ C3] down_write+0x72/0x210 [ 18.861386][ C3] ? __pfx_down_write+0x10/0x10 [ 18.861391][ C3] ? simple_recursive_removal+0x33/0x610 [ 18.861397][ C3] ? rcu_is_watching+0x12/0xc0 [ 18.861405][ C3] ? do_raw_spin_unlock+0x58/0x220 [ 18.861413][ C3] simple_recursive_removal+0x6a/0x610 [ 18.861418][ C3] ? do_raw_spin_unlock+0x58/0x220 [ 18.861423][ C3] ? __pfx_remove_one+0x10/0x10 [ 18.861432][ C3] debugfs_remove+0x44/0x70 [ 18.861437][ C3] ref_tracker_dir_exit+0xcf/0x740 [ 18.861446][ C3] ? __pfx_ref_tracker_free+0x10/0x10 [ 18.861451][ C3] ? __sk_destruct+0x383/0x780 [ 18.861458][ C3] ? rcu_do_batch+0x34c/0xf20 [ 18.861464][ C3] ? __pfx_ref_tracker_dir_exit+0x10/0x10 [ 18.861469][ C3] ? smpboot_thread_fn+0x30a/0x960 [ 18.861475][ C3] ? kthread+0x37e/0x600 [ 18.861479][ C3] ? ret_from_fork+0x240/0x320 [ 18.861484][ C3] ? ret_from_fork_asm+0x1a/0x30 [ 18.861491][ C3] ? migrate_enable+0x1f2/0x270 [ 18.861497][ C3] ? __pfx_migrate_enable+0x10/0x10 [ 18.861503][ C3] ? bpf_sk_storage_free+0x9f/0x1c0 [ 18.861509][ C3] ? rcu_is_watching+0x12/0xc0 [ 18.861518][ C3] __put_net+0x19/0x60 [ 18.861524][ C3] __sk_destruct+0x58a/0x780 [ 18.861531][ C3] ? rcu_do_batch+0x34a/0xf20 [ 18.861535][ C3] rcu_do_batch+0x34c/0xf20 [ 18.861541][ C3] ? __schedule+0x87b/0x1b00 [ 18.861550][ C3] ? __pfx_rcu_do_batch+0x10/0x10 [ 18.861556][ C3] ? rcu_is_watching+0x12/0xc0 [ 18.861561][ C3] ? trace_irq_enable.constprop.0+0xd4/0x130 [ 18.861572][ C3] rcu_core+0x2bb/0x500 [ 18.861580][ C3] handle_softirqs+0x218/0x620 [ 18.861588][ C3] ? __pfx_run_ksoftirqd+0x10/0x10 [ 18.861595][ C3] run_ksoftirqd+0x3f/0x70 [ 18.861600][ C3] smpboot_thread_fn+0x30a/0x960 [ 18.861606][ C3] ? __pfx_smpboot_thread_fn+0x10/0x10 [ 18.861613][ C3] kthread+0x37e/0x600 [ 18.861618][ C3] ? __pfx_kthread+0x10/0x10 [ 18.861622][ C3] ? ret_from_fork+0x1b/0x320 [ 18.861626][ C3] ? __lock_release+0x5d/0x170 [ 18.861633][ C3] ? rcu_is_watching+0x12/0xc0 [ 18.861638][ C3] ? __pfx_kthread+0x10/0x10 [ 18.861644][ C3] ret_from_fork+0x240/0x320 [ 18.861649][ C3] ? __pfx_kthread+0x10/0x10 [ 18.861653][ C3] ret_from_fork_asm+0x1a/0x30 [ 18.861667][ C3]