====================================== | [ 15.458184][ C1] 1 lock held by ksoftirqd/1/22: | [ 15.458449][ C1] #0: ffffffffa8f74480 (rcu_callback){....}-{0:0}, at: rcu_do_batch (./include/linux/rcupdate.h:331 kernel/rcu/tree.c:2562) | [ 15.458920][ C1] | [ 15.458920][ C1] stack backtrace: [ 15.459251][ C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.459254][ C1] Call Trace: [ 15.459257][ C1] [ 15.459260][ C1] dump_stack_lvl (lib/dump_stack.c:123) [ 15.459268][ C1] print_usage_bug.part.0 (kernel/locking/lockdep.c:4046) [ 15.459277][ C1] mark_lock_irq (kernel/locking/lockdep.c:4011 kernel/locking/lockdep.c:4057 kernel/locking/lockdep.c:4268) [ 15.459286][ C1] ? __pfx_unwind_next_frame (arch/x86/kernel/unwind_orc.c:469) [ 15.459294][ C1] ? save_trace (kernel/locking/lockdep.c:594) [ 15.459301][ C1] mark_lock (kernel/locking/lockdep.c:4754) [ 15.459308][ C1] mark_usage (kernel/locking/lockdep.c:4643) [ 15.459313][ C1] __lock_acquire (kernel/locking/lockdep.c:5189) [ 15.459322][ C1] lock_acquire.part.0 (kernel/locking/lockdep.c:472 kernel/locking/lockdep.c:5868) [ 15.459327][ C1] ? simple_pin_fs (fs/libfs.c:1066) [ 15.459333][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) [ 15.459337][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5829) [ 15.459341][ C1] ? simple_pin_fs (fs/libfs.c:1066) [ 15.459345][ C1] _raw_spin_lock (./include/linux/spinlock_api_smp.h:134 kernel/locking/spinlock.c:154) [ 15.459348][ C1] ? simple_pin_fs (fs/libfs.c:1066) [ 15.459352][ C1] simple_pin_fs (fs/libfs.c:1066) [ 15.459356][ C1] debugfs_remove (fs/debugfs/inode.c:805 fs/debugfs/inode.c:799) [ 15.459359][ C1] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) [ 15.459363][ C1] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) [ 15.459366][ C1] ? __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) [ 15.459371][ C1] ? rcu_do_batch (kernel/rcu/tree.c:2568) [ 15.459374][ C1] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) [ 15.459377][ C1] ? smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) [ 15.459381][ C1] ? kthread (kernel/kthread.c:464) [ 15.459385][ C1] ? ret_from_fork (arch/x86/kernel/process.c:153) [ 15.459388][ C1] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) [ 15.459392][ C1] ? migrate_enable (./arch/x86/include/asm/preempt.h:104 ./include/linux/preempt.h:481 ./include/linux/preempt.h:481 kernel/sched/core.c:2417) [ 15.459396][ C1] ? __pfx_migrate_enable (kernel/sched/core.c:2392) [ 15.459402][ C1] __put_net (net/core/net_namespace.c:732) [ 15.459405][ C1] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) [ 15.459409][ C1] ? rcu_do_batch (kernel/rcu/tree.c:2568) [ 15.459412][ C1] rcu_do_batch (kernel/rcu/tree.c:2568) [ 15.459417][ C1] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) [ 15.459421][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) [ 15.459424][ C1] ? note_gp_changes (kernel/rcu/tree.c:1324 (discriminator 1)) [ 15.459428][ C1] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) [ 15.459434][ C1] rcu_core (kernel/rcu/tree.c:2826) [ 15.459437][ C1] handle_softirqs (kernel/softirq.c:579) [ 15.459441][ C1] ? __pfx_run_ksoftirqd (kernel/softirq.c:961) [ 15.459444][ C1] run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) [ 15.459446][ C1] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) [ 15.459449][ C1] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) [ 15.459453][ C1] kthread (kernel/kthread.c:464) [ 15.459456][ C1] ? __pfx_kthread (kernel/kthread.c:413) [ 15.459459][ C1] ? ret_from_fork (arch/x86/kernel/process.c:152) [ 15.459462][ C1] ? __lock_release (kernel/locking/lockdep.c:5534) [ 15.459466][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) [ 15.459469][ C1] ? __pfx_kthread (kernel/kthread.c:413) [ 15.459473][ C1] ret_from_fork (arch/x86/kernel/process.c:153) [ 15.459476][ C1] ? __pfx_kthread (kernel/kthread.c:413) [ 15.459479][ C1] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) | [ 15.475278][ C1] RCU nest depth: 0, expected: 0 | [ 15.475517][ C1] INFO: lockdep is turned off. | [ 15.475765][ C1] Preemption disabled at: | [ 15.475768][ C1] handle_softirqs (kernel/softirq.c:553) [ 15.476264][ C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.476267][ C1] Call Trace: [ 15.476269][ C1] [ 15.476272][ C1] dump_stack_lvl (lib/dump_stack.c:123) [ 15.476280][ C1] __might_resched (kernel/sched/core.c:8819) [ 15.476288][ C1] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) [ 15.476293][ C1] ? __pfx_down_write (kernel/locking/rwsem.c:1575) [ 15.476298][ C1] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) [ 15.476304][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) [ 15.476311][ C1] ? 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) [ 15.476318][ C1] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) [ 15.476323][ C1] ? __pfx_remove_one (fs/debugfs/inode.c:780) [ 15.476328][ C1] ? 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) [ 15.476336][ C1] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) [ 15.476340][ C1] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) [ 15.476345][ C1] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) [ 15.476348][ C1] ? __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) [ 15.476353][ C1] ? rcu_do_batch (kernel/rcu/tree.c:2568) [ 15.476356][ C1] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) [ 15.476359][ C1] ? smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) [ 15.476362][ C1] ? kthread (kernel/kthread.c:464) [ 15.476366][ C1] ? ret_from_fork (arch/x86/kernel/process.c:153) [ 15.476370][ C1] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) [ 15.476374][ C1] ? migrate_enable (./arch/x86/include/asm/preempt.h:104 ./include/linux/preempt.h:481 ./include/linux/preempt.h:481 kernel/sched/core.c:2417) [ 15.476378][ C1] ? __pfx_migrate_enable (kernel/sched/core.c:2392) [ 15.476384][ C1] __put_net (net/core/net_namespace.c:732) [ 15.476387][ C1] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) [ 15.476391][ C1] ? rcu_do_batch (kernel/rcu/tree.c:2568) [ 15.476394][ C1] rcu_do_batch (kernel/rcu/tree.c:2568) [ 15.476399][ C1] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) [ 15.476403][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) [ 15.476406][ C1] ? note_gp_changes (kernel/rcu/tree.c:1324 (discriminator 1)) [ 15.476410][ C1] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473) [ 15.476416][ C1] rcu_core (kernel/rcu/tree.c:2826) [ 15.476419][ C1] handle_softirqs (kernel/softirq.c:579) [ 15.476422][ C1] ? __pfx_run_ksoftirqd (kernel/softirq.c:961) [ 15.476426][ C1] run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) [ 15.476428][ C1] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) [ 15.476431][ C1] ? __pfx_smpboot_thread_fn (kernel/smpboot.c:107) [ 15.476435][ C1] kthread (kernel/kthread.c:464) [ 15.476438][ C1] ? __pfx_kthread (kernel/kthread.c:413) [ 15.476441][ C1] ? ret_from_fork (arch/x86/kernel/process.c:152) [ 15.476444][ C1] ? __lock_release (kernel/locking/lockdep.c:5534) [ 15.476449][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) [ 15.476452][ C1] ? __pfx_kthread (kernel/kthread.c:413) [ 15.476456][ C1] ret_from_fork (arch/x86/kernel/process.c:153) [ 15.476459][ C1] ? __pfx_kthread (kernel/kthread.c:413) [ 15.476462][ C1] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) | [ 18.061358][ C0] INFO: lockdep is turned off. | [ 18.061523][ C0] Preemption disabled at: | [ 18.061525][ C0] 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) | [ 18.061917][ C0] Tainted: [W]=WARN [ 18.061918][ C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 18.061921][ C0] Call Trace: [ 18.061922][ C0] [ 18.061924][ C0] dump_stack_lvl (lib/dump_stack.c:123) [ 18.061931][ C0] __might_resched (kernel/sched/core.c:8819) [ 18.061936][ C0] down_write (./include/linux/kernel.h:73 kernel/locking/rwsem.c:1576) [ 18.061941][ C0] ? __pfx_down_write (kernel/locking/rwsem.c:1575) [ 18.061943][ C0] ? simple_recursive_removal (./include/linux/dcache.h:345 fs/libfs.c:610) [ 18.061948][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) [ 18.061954][ 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) [ 18.061959][ C0] simple_recursive_removal (./include/linux/dcache.h:409 ./include/linux/dcache.h:424 ./include/linux/dcache.h:434 fs/libfs.c:616) [ 18.061961][ C0] ? __pfx_remove_one (fs/debugfs/inode.c:780) [ 18.061966][ 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) [ 18.061970][ C0] debugfs_remove (fs/debugfs/inode.c:806 fs/debugfs/inode.c:799) [ 18.061973][ C0] ref_tracker_dir_exit (lib/ref_tracker.c:423 lib/ref_tracker.c:195) [ 18.061978][ C0] ? __pfx_ref_tracker_free (lib/ref_tracker.c:253) [ 18.061981][ 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) [ 18.061986][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) [ 18.061990][ C0] ? __pfx_ref_tracker_dir_exit (lib/ref_tracker.c:189) [ 18.061992][ C0] ? __local_bh_enable_ip (kernel/softirq.c:407) [ 18.061996][ C0] ? copy_fpstate_to_sigframe (arch/x86/kernel/fpu/signal.c:231) [ 18.061999][ C0] ? get_sigframe (arch/x86/kernel/signal.c:163) [ 18.062003][ C0] ? 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) [ 18.062006][ C0] ? handle_signal (arch/x86/kernel/signal.c:250 arch/x86/kernel/signal.c:294) [ 18.062009][ C0] ? arch_do_signal_or_restart (arch/x86/kernel/signal.c:340) [ 18.062012][ C0] ? 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) [ 18.062016][ C0] ? do_syscall_64 (arch/x86/entry/syscall_64.c:113) [ 18.062021][ C0] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 18.062025][ C0] ? bpf_sk_storage_free (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/bpf_sk_storage.c:61) [ 18.062029][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) [ 18.062034][ C0] __put_net (net/core/net_namespace.c:732) [ 18.062037][ C0] __sk_destruct (./include/net/net_namespace.h:288 ./include/net/net_namespace.h:390 net/core/sock.c:2333) [ 18.062040][ C0] ? rcu_do_batch (kernel/rcu/tree.c:2568) [ 18.062043][ C0] rcu_do_batch (kernel/rcu/tree.c:2568) [ 18.062048][ C0] ? __pfx_rcu_do_batch (kernel/rcu/tree.c:2492) [ 18.062052][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) [ 18.062055][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) [ 18.062061][ C0] rcu_core (kernel/rcu/tree.c:2826) [ 18.062064][ C0] handle_softirqs (kernel/softirq.c:579) [ 18.062068][ C0] ? 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) [ 18.062072][ C0] do_softirq (kernel/softirq.c:480 kernel/softirq.c:467) [ 18.062074][ C0] [ 18.062076][ C0] [ 18.062077][ C0] __local_bh_enable_ip (kernel/softirq.c:407) [ 18.062079][ C0] copy_fpstate_to_sigframe (arch/x86/kernel/fpu/signal.c:231) [ 18.062085][ C0] get_sigframe (arch/x86/kernel/signal.c:163) [ 18.062087][ C0] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40) [ 18.062091][ C0] ? __pfx_get_sigframe (arch/x86/kernel/signal.c:96) [ 18.062095][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) [ 18.062098][ C0] ? trace_rseq_update (./include/trace/events/rseq.h:11 (discriminator 21)) [ 18.062105][ C0] 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) [ 18.062109][ C0] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:425) [ 18.062113][ C0] ? __pfx_x64_setup_rt_frame (arch/x86/kernel/signal_64.c:165) [ 18.062117][ C0] ? __pfx___schedule (kernel/sched/core.c:6646) [ 18.062123][ C0] handle_signal (arch/x86/kernel/signal.c:250 arch/x86/kernel/signal.c:294) [ 18.062126][ C0] arch_do_signal_or_restart (arch/x86/kernel/signal.c:340) [ 18.062130][ C0] ? __pfx_arch_do_signal_or_restart (arch/x86/kernel/signal.c:334) [ 18.062135][ C0] ? __x64_sys_rt_sigsuspend (kernel/signal.c:4858 kernel/signal.c:4848 kernel/signal.c:4848) [ 18.062140][ C0] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:736) [ 18.062144][ C0] 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) [ 18.062148][ C0] do_syscall_64 (arch/x86/entry/syscall_64.c:113) [ 18.062152][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 18.062155][ C0] RIP: 0033:0x7f0aeb2cc06c [ 18.062161][ C0] Code: Unable to access opcode bytes at 0x7f0aeb2cc042. Code starting with the faulting instruction =========================================== [ 18.062163][ C0] RSP: 002b:00007ffc2098eed8 EFLAGS: 00000246 ORIG_RAX: 0000000000000082 [ 18.062166][ C0] RAX: fffffffffffffffc RBX: 00007ffc2098ef18 RCX: 00007f0aeb2cc06c [ 18.062169][ C0] RDX: 0000000000000001 RSI: 0000000000000008 RDI: 00007ffc2098ef40 [ 18.062170][ C0] RBP: 00007ffc2098efc0 R08: 00007ffc2098efc0 R09: 0000000000000000 [ 18.062172][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc2098ef40 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