====================================== | [ 14.404666][ C0] 1 lock held by ksoftirqd/0/14: | [ 14.404841][ C0] #0: ffffffff8f174480 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) | [ 14.405154][ C0] | [ 14.405154][ C0] stack backtrace: [ 14.405376][ C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.405378][ C0] Call Trace: [ 14.405380][ C0] [ 14.405382][ C0] dump_stack_lvl (lib/dump_stack.c:123) [ 14.405388][ C0] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) [ 14.405393][ C0] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) [ 14.405398][ C0] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) [ 14.405403][ C0] ? save_trace (kernel/locking/lockdep.c:594) [ 14.405407][ C0] mark_lock (kernel/locking/lockdep.c:4754) [ 14.405412][ C0] mark_usage (kernel/locking/lockdep.c:4643) [ 14.405415][ C0] __lock_acquire (kernel/locking/lockdep.c:5189) [ 14.405421][ C0] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) [ 14.405424][ C0] ? simple_pin_fs (fs/libfs.c:1066) [ 14.405429][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) [ 14.405434][ C0] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) [ 14.405437][ C0] ? simple_pin_fs (fs/libfs.c:1066) [ 14.405441][ C0] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) [ 14.405444][ C0] ? simple_pin_fs (fs/libfs.c:1066) [ 14.405448][ C0] simple_pin_fs (fs/libfs.c:1066) [ 14.405452][ C0] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) [ 14.405455][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) [ 14.405460][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) [ 14.405463][ C0] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2333) [ 14.405468][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) [ 14.405471][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) [ 14.405474][ C0] ? smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) [ 14.405477][ C0] ? kthread (kernel/kthread.c:464) [ 14.405481][ C0] ? ret_from_fork (arch/x86/kernel/process.c:153) [ 14.405484][ C0] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) [ 14.405487][ C0] ? migrate_enable (./arch/x86/include/asm/preempt.h:104 ./include/linux/preempt.h:481 ./include/linux/preempt.h:481 kernel/sched/core.c:2417) [ 14.405492][ C0] ? __pfx_migrate_enable (kernel/sched/core.c:2392) [ 14.405497][ C0] __put_net (net/core/net_namespace.c:732) [ 14.405501][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) [ 14.405504][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) [ 14.405507][ C0] rcu_do_batch (kernel/rcu/tree.c:2568) [ 14.405512][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) [ 14.405516][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) [ 14.405520][ C0] ? note_gp_changes (kernel/rcu/tree.c:1324 (discriminator 1)) [ 14.405523][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) [ 14.405529][ C0] rcu_core (kernel/rcu/tree.c:2826) [ 14.405532][ C0] handle_softirqs (kernel/softirq.c:579) [ 14.405535][ C0] ? __pfx_run_ksoftirqd (kernel/softirq.c:961) [ 14.405538][ C0] run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) [ 14.405541][ C0] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) [ 14.405544][ C0] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) [ 14.405547][ C0] kthread (kernel/kthread.c:464) [ 14.405551][ C0] ? __pfx_kthread (kernel/kthread.c:413) [ 14.405553][ C0] ? ret_from_fork (arch/x86/kernel/process.c:152) [ 14.405557][ C0] ? __lock_release (kernel/locking/lockdep.c:5534) [ 14.405560][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) [ 14.405564][ C0] ? __pfx_kthread (kernel/kthread.c:413) [ 14.405567][ C0] ret_from_fork (arch/x86/kernel/process.c:153) [ 14.405571][ C0] ? __pfx_kthread (kernel/kthread.c:413) [ 14.405574][ C0] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) | [ 14.416095][ C0] RCU nest depth: 0, expected: 0 | [ 14.416267][ C0] INFO: lockdep is turned off. | [ 14.416434][ C0] Preemption disabled at: | [ 14.416436][ C0] handle_softirqs (kernel/softirq.c:553) [ 14.416772][ C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.416774][ C0] Call Trace: [ 14.416775][ C0] [ 14.416777][ C0] dump_stack_lvl (lib/dump_stack.c:123) [ 14.416781][ C0] __might_resched (kernel/sched/core.c:8819) [ 14.416786][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) [ 14.416789][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) [ 14.416792][ C0] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) [ 14.416795][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) [ 14.416800][ C0] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 14.416804][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) [ 14.416807][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) [ 14.416810][ C0] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 14.416814][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) [ 14.416817][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) [ 14.416821][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) [ 14.416824][ C0] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2333) [ 14.416828][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) [ 14.416831][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) [ 14.416834][ C0] ? smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) [ 14.416838][ C0] ? kthread (kernel/kthread.c:464) [ 14.416841][ C0] ? ret_from_fork (arch/x86/kernel/process.c:153) [ 14.416845][ C0] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) [ 14.416849][ C0] ? migrate_enable (./arch/x86/include/asm/preempt.h:104 ./include/linux/preempt.h:481 ./include/linux/preempt.h:481 kernel/sched/core.c:2417) [ 14.416853][ C0] ? __pfx_migrate_enable (kernel/sched/core.c:2392) [ 14.416859][ C0] __put_net (net/core/net_namespace.c:732) [ 14.416862][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) [ 14.416865][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) [ 14.416868][ C0] rcu_do_batch (kernel/rcu/tree.c:2568) [ 14.416873][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) [ 14.416877][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) [ 14.416881][ C0] ? note_gp_changes (kernel/rcu/tree.c:1324 (discriminator 1)) [ 14.416884][ C0] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) [ 14.416889][ C0] rcu_core (kernel/rcu/tree.c:2826) [ 14.416892][ C0] handle_softirqs (kernel/softirq.c:579) [ 14.416896][ C0] ? __pfx_run_ksoftirqd (kernel/softirq.c:961) [ 14.416899][ C0] run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) [ 14.416901][ C0] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) [ 14.416905][ C0] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) [ 14.416908][ C0] kthread (kernel/kthread.c:464) [ 14.416911][ C0] ? __pfx_kthread (kernel/kthread.c:413) [ 14.416914][ C0] ? ret_from_fork (arch/x86/kernel/process.c:152) [ 14.416918][ C0] ? __lock_release (kernel/locking/lockdep.c:5534) [ 14.416922][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) [ 14.416925][ C0] ? __pfx_kthread (kernel/kthread.c:413) [ 14.416929][ C0] ret_from_fork (arch/x86/kernel/process.c:153) [ 14.416932][ C0] ? __pfx_kthread (kernel/kthread.c:413) [ 14.416935][ C0] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) | [ 15.969358][ C3] INFO: lockdep is turned off. | [ 15.969536][ C3] Preemption disabled at: | [ 15.969538][ C3] copy_fpstate_to_sigframe (./include/linux/instrumented.h:68 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 ./include/linux/thread_info.h:126 arch/x86/kernel/fpu/signal.c:223) | [ 15.969951][ C3] Tainted: [W]=WARN [ 15.969953][ C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.969954][ C3] Call Trace: [ 15.969956][ C3] [ 15.969958][ C3] dump_stack_lvl (lib/dump_stack.c:123) [ 15.969965][ C3] __might_resched (kernel/sched/core.c:8819) [ 15.969970][ C3] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) [ 15.969974][ C3] ? __pfx_down_write (kernel/locking/rwsem.c:1575) [ 15.969977][ C3] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) [ 15.969981][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) [ 15.969987][ C3] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 15.969992][ C3] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) [ 15.969994][ C3] ? __pfx_remove_one (fs/debugfs/inode.c:780) [ 15.969999][ C3] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 15.970003][ C3] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) [ 15.970006][ C3] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) [ 15.970011][ C3] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) [ 15.970014][ C3] ? __sk_destruct (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/refcount.h:450 ./include/net/net_namespace.h:287 ./include/net/net_namespace.h:390 net/core/sock.c:2333) [ 15.970019][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) [ 15.970023][ C3] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) [ 15.970026][ C3] ? __local_bh_enable_ip (kernel/softirq.c:407) [ 15.970030][ C3] ? copy_fpstate_to_sigframe (arch/x86/kernel/fpu/signal.c:231) [ 15.970033][ C3] ? get_sigframe (arch/x86/kernel/signal.c:163) [ 15.970038][ C3] ? x64_setup_rt_frame (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 arch/x86/kernel/signal_64.c:153 arch/x86/kernel/signal_64.c:176) [ 15.970040][ C3] ? handle_signal (arch/x86/kernel/signal.c:250 arch/x86/kernel/signal.c:294) [ 15.970043][ C3] ? arch_do_signal_or_restart (arch/x86/kernel/signal.c:340) [ 15.970046][ C3] ? syscall_exit_to_user_mode (kernel/entry/common.c:113 ./include/linux/entry-common.h:329 kernel/entry/common.c:207 kernel/entry/common.c:218) [ 15.970051][ C3] ? do_syscall_64 (arch/x86/entry/syscall_64.c:113) [ 15.970056][ C3] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 15.970059][ C3] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) [ 15.970063][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) [ 15.970068][ C3] __put_net (net/core/net_namespace.c:732) [ 15.970071][ C3] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) [ 15.970075][ C3] ? rcu_do_batch (kernel/rcu/tree.c:2568) [ 15.970078][ C3] rcu_do_batch (kernel/rcu/tree.c:2568) [ 15.970083][ C3] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) [ 15.970087][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) [ 15.970090][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) [ 15.970096][ C3] rcu_core (kernel/rcu/tree.c:2826) [ 15.970099][ C3] handle_softirqs (kernel/softirq.c:579) [ 15.970103][ C3] ? copy_fpstate_to_sigframe (./include/linux/bottom_half.h:33 ./arch/x86/include/asm/fpu/api.h:77 arch/x86/kernel/fpu/signal.c:229) [ 15.970107][ C3] do_softirq (kernel/softirq.c:480 kernel/softirq.c:467) [ 15.970110][ C3] [ 15.970111][ C3] [ 15.970112][ C3] __local_bh_enable_ip (kernel/softirq.c:407) [ 15.970115][ C3] copy_fpstate_to_sigframe (arch/x86/kernel/fpu/signal.c:231) [ 15.970120][ C3] get_sigframe (arch/x86/kernel/signal.c:163) [ 15.970123][ C3] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) [ 15.970126][ C3] ? __pfx_get_sigframe (arch/x86/kernel/signal.c:96) [ 15.970130][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) [ 15.970133][ C3] ? trace_rseq_update (./include/trace/events/rseq.h:11 (discriminator 21)) [ 15.970140][ C3] x64_setup_rt_frame (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 arch/x86/kernel/signal_64.c:153 arch/x86/kernel/signal_64.c:176) [ 15.970144][ C3] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:425) [ 15.970148][ C3] ? __pfx_x64_setup_rt_frame (arch/x86/kernel/signal_64.c:165) [ 15.970151][ C3] ? __pfx___schedule (kernel/sched/core.c:6646) [ 15.970157][ C3] handle_signal (arch/x86/kernel/signal.c:250 arch/x86/kernel/signal.c:294) [ 15.970161][ C3] arch_do_signal_or_restart (arch/x86/kernel/signal.c:340) [ 15.970164][ C3] ? __pfx_arch_do_signal_or_restart (arch/x86/kernel/signal.c:334) [ 15.970169][ C3] ? __x64_sys_rt_sigsuspend (kernel/signal.c:4858 kernel/signal.c:4848 kernel/signal.c:4848) [ 15.970174][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) [ 15.970178][ C3] syscall_exit_to_user_mode (kernel/entry/common.c:113 ./include/linux/entry-common.h:329 kernel/entry/common.c:207 kernel/entry/common.c:218) [ 15.970182][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:113) [ 15.970186][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 15.970189][ C3] RIP: 0033:0x7fe78f29f06c [ 15.970194][ C3] Code: Unable to access opcode bytes at 0x7fe78f29f042. Code starting with the faulting instruction =========================================== [ 15.970196][ C3] RSP: 002b:00007fff7aa52a08 EFLAGS: 00000246 ORIG_RAX: 0000000000000082 [ 15.970200][ C3] RAX: fffffffffffffffc RBX: 00007fff7aa52a48 RCX: 00007fe78f29f06c [ 15.970202][ C3] RDX: 0000000000000001 RSI: 0000000000000008 RDI: 00007fff7aa52a70 [ 15.970204][ C3] RBP: 00007fff7aa52af0 R08: 00007fff7aa52af0 R09: 0000000000000000 [ 15.970206][ C3] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff7aa52a70 Finger prints: mark_lock_irq:mark_lock:mark_usage:__lock_acquire:_raw_spin_lock copy_fpstate_to_sigframe:dump_stack_lvl:__might_resched:down_write:simple_recursive_removal handle_softirqs:dump_stack_lvl:__might_resched:down_write:simple_recursive_removal