------------[ cut here ]------------
======================================================
WARNING: possible circular locking dependency detected
6.9.0-rc1-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor.1/5756 is trying to acquire lock:
ffffffff8d7a29b8 ((console_sem).lock){-...}-{2:2}, at: down_trylock+0x12/0x70 kernel/locking/semaphore.c:139

but task is already holding lock:
ffff88802c52c9d8 (hrtimer_bases.lock){-.-.}-{2:2}, at: __run_hrtimer kernel/time/hrtimer.c:1696 [inline]
ffff88802c52c9d8 (hrtimer_bases.lock){-.-.}-{2:2}, at: __hrtimer_run_queues+0x2c0/0xcc0 kernel/time/hrtimer.c:1756

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #4 (hrtimer_bases.lock){-.-.}-{2:2}:
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
       lock_hrtimer_base kernel/time/hrtimer.c:175 [inline]
       hrtimer_start_range_ns+0xe7/0xe10 kernel/time/hrtimer.c:1303
       hrtimer_start_expires include/linux/hrtimer.h:289 [inline]
       do_start_rt_bandwidth kernel/sched/rt.c:120 [inline]
       start_rt_bandwidth kernel/sched/rt.c:131 [inline]
       inc_rt_group kernel/sched/rt.c:1188 [inline]
       inc_rt_tasks kernel/sched/rt.c:1231 [inline]
       __enqueue_rt_entity kernel/sched/rt.c:1406 [inline]
       enqueue_rt_entity kernel/sched/rt.c:1455 [inline]
       enqueue_task_rt+0x854/0xcb0 kernel/sched/rt.c:1490
       enqueue_task+0xaf/0x350 kernel/sched/core.c:2116
       __sched_setscheduler.constprop.0+0x12e2/0x2a80 kernel/sched/core.c:7904
       _sched_setscheduler kernel/sched/core.c:7951 [inline]
       sched_setscheduler_nocheck kernel/sched/core.c:7998 [inline]
       sched_set_fifo+0xb1/0x110 kernel/sched/core.c:8022
       irq_thread+0xf9/0x670 kernel/irq/manage.c:1309
       kthread+0x2c1/0x3a0 kernel/kthread.c:388
       ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
       ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243

-> #3 (&rt_b->rt_runtime_lock){-...}-{2:2}:
       __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
       _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
       __enable_runtime kernel/sched/rt.c:832 [inline]
       rq_online_rt+0xb3/0x3b0 kernel/sched/rt.c:2434
       set_rq_online.part.0+0xf9/0x140 kernel/sched/core.c:9587
       set_rq_online kernel/sched/core.c:9579 [inline]
       sched_cpu_activate+0x20f/0x450 kernel/sched/core.c:9696
       cpuhp_invoke_callback+0x435/0xbe0 kernel/cpu.c:194
       cpuhp_thread_fun+0x480/0x6f0 kernel/cpu.c:1092
       smpboot_thread_fn+0x661/0xa10 kernel/smpboot.c:164
       kthread+0x2c1/0x3a0 kernel/kthread.c:388
       ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
       ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243

-> #2 (&rq->__lock){-.-.}-{2:2}:
       _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378
       raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:559
       raw_spin_rq_lock kernel/sched/sched.h:1385 [inline]
       rq_lock kernel/sched/sched.h:1699 [inline]
       task_fork_fair+0x70/0x240 kernel/sched/fair.c:12635
       sched_cgroup_fork+0x3cf/0x510 kernel/sched/core.c:4845
       copy_process+0x450e/0x6f00 kernel/fork.c:2498
       kernel_clone+0xfd/0x980 kernel/fork.c:2796
       user_mode_thread+0xb4/0xf0 kernel/fork.c:2874
       rest_init+0x23/0x2b0 init/main.c:697
       start_kernel+0x3a3/0x490 init/main.c:1074
       x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:507
       x86_64_start_kernel+0xb2/0xc0 arch/x86/kernel/head64.c:488
       common_startup_64+0x13e/0x148

-> #1 (&p->pi_lock){-.-.}-{2:2}:
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
       class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:553 [inline]
       try_to_wake_up+0x9a/0x13e0 kernel/sched/core.c:4262
       up+0x79/0xb0 kernel/locking/semaphore.c:191
       __up_console_sem kernel/printk/printk.c:340 [inline]
       __console_unlock kernel/printk/printk.c:2725 [inline]
       console_unlock+0x23e/0x290 kernel/printk/printk.c:3044
       vga_remove_vgacon drivers/pci/vgaarb.c:186 [inline]
       vga_remove_vgacon+0x90/0xd0 drivers/pci/vgaarb.c:167
       __aperture_remove_legacy_vga_devices drivers/video/aperture.c:331 [inline]
       aperture_remove_conflicting_pci_devices+0x17f/0x210 drivers/video/aperture.c:374
       bochs_pci_probe+0x101/0x1150 drivers/gpu/drm/tiny/bochs.c:651
       local_pci_probe+0xde/0x1b0 drivers/pci/pci-driver.c:324
       pci_call_probe drivers/pci/pci-driver.c:392 [inline]
       __pci_device_probe drivers/pci/pci-driver.c:417 [inline]
       pci_device_probe+0x29d/0x7b0 drivers/pci/pci-driver.c:451
       call_driver_probe drivers/base/dd.c:578 [inline]
       really_probe+0x23e/0xa90 drivers/base/dd.c:656
       __driver_probe_device+0x1de/0x440 drivers/base/dd.c:798
       driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:828
       __driver_attach+0x283/0x580 drivers/base/dd.c:1214
       bus_for_each_dev+0x13c/0x1d0 drivers/base/bus.c:368
       bus_add_driver+0x2ed/0x640 drivers/base/bus.c:673
       driver_register+0x15c/0x4b0 drivers/base/driver.c:246
       drm_pci_register_driver_if_modeset include/drm/drm_module.h:69 [inline]
       bochs_pci_driver_init+0x67/0x80 drivers/gpu/drm/tiny/bochs.c:735
       do_one_initcall+0x128/0x630 init/main.c:1238
       do_initcall_level init/main.c:1300 [inline]
       do_initcalls init/main.c:1316 [inline]
       do_basic_setup init/main.c:1335 [inline]
       kernel_init_freeable+0x660/0xc50 init/main.c:1548
       kernel_init+0x1c/0x2b0 init/main.c:1437
       ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
       ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243

-> #0 ((console_sem).lock){-...}-{2:2}:
       check_prev_add kernel/locking/lockdep.c:3134 [inline]
       check_prevs_add kernel/locking/lockdep.c:3253 [inline]
       validate_chain kernel/locking/lockdep.c:3869 [inline]
       __lock_acquire+0x2478/0x3b30 kernel/locking/lockdep.c:5137
       lock_acquire kernel/locking/lockdep.c:5754 [inline]
       lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
       down_trylock+0x12/0x70 kernel/locking/semaphore.c:139
       __down_trylock_console_sem+0x40/0x140 kernel/printk/printk.c:323
       console_trylock kernel/printk/printk.c:2678 [inline]
       console_trylock_spinning kernel/printk/printk.c:1958 [inline]
       vprintk_emit kernel/printk/printk.c:2341 [inline]
       vprintk_emit+0xe4/0x5a0 kernel/printk/printk.c:2297
       vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:45
       _printk+0xc8/0x100 kernel/printk/printk.c:2367
       __report_bug lib/bug.c:195 [inline]
       report_bug+0x4ac/0x580 lib/bug.c:219
       handle_bug+0x3d/0x70 arch/x86/kernel/traps.c:239
       exc_invalid_op+0x17/0x50 arch/x86/kernel/traps.c:260
       asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:621
       __local_bh_disable_ip+0xb8/0xd0 kernel/softirq.c:307
       __raw_spin_lock_bh include/linux/spinlock_api_smp.h:125 [inline]
       _raw_spin_lock_bh+0x17/0x40 kernel/locking/spinlock.c:178
       spin_lock_bh include/linux/spinlock.h:356 [inline]
       __sock_map_delete net/core/sock_map.c:414 [inline]
       sock_map_delete_elem+0xc8/0x150 net/core/sock_map.c:446
       bpf_prog_2c29ac5cdc6b1842+0x42/0x46
       bpf_dispatcher_nop_func include/linux/bpf.h:1234 [inline]
       __bpf_prog_run include/linux/filter.h:657 [inline]
       bpf_prog_run include/linux/filter.h:664 [inline]
       __bpf_trace_run kernel/trace/bpf_trace.c:2381 [inline]
       bpf_trace_run4+0x176/0x460 kernel/trace/bpf_trace.c:2422
       trace_mm_page_alloc include/trace/events/kmem.h:177 [inline]
       __alloc_pages+0x3ad/0x2460 mm/page_alloc.c:4597
       __alloc_pages_node include/linux/gfp.h:238 [inline]
       alloc_pages_node include/linux/gfp.h:261 [inline]
       alloc_slab_page mm/slub.c:2175 [inline]
       allocate_slab mm/slub.c:2338 [inline]
       new_slab+0xcc/0x3a0 mm/slub.c:2391
       ___slab_alloc+0x670/0x16d0 mm/slub.c:3525
       __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3610
       __slab_alloc_node mm/slub.c:3663 [inline]
       slab_alloc_node mm/slub.c:3835 [inline]
       kmem_cache_alloc+0x2e9/0x320 mm/slub.c:3852
       kmem_cache_zalloc include/linux/slab.h:739 [inline]
       fill_pool+0x275/0x5d0 lib/debugobjects.c:168
       debug_objects_fill_pool lib/debugobjects.c:615 [inline]
       debug_object_activate+0x151/0x540 lib/debugobjects.c:704
       debug_hrtimer_activate kernel/time/hrtimer.c:423 [inline]
       debug_activate kernel/time/hrtimer.c:478 [inline]
       enqueue_hrtimer+0x25/0x3c0 kernel/time/hrtimer.c:1090
       __run_hrtimer kernel/time/hrtimer.c:1709 [inline]
       __hrtimer_run_queues+0xaac/0xcc0 kernel/time/hrtimer.c:1756
       hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1818
       local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
       __sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
       instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
       sysvec_apic_timer_interrupt+0x43/0xb0 arch/x86/kernel/apic/apic.c:1043
       asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702

other info that might help us debug this:

Chain exists of:
  (console_sem).lock --> &rt_b->rt_runtime_lock --> hrtimer_bases.lock

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(hrtimer_bases.lock);
                               lock(&rt_b->rt_runtime_lock);
                               lock(hrtimer_bases.lock);
  lock((console_sem).lock);

 *** DEADLOCK ***

3 locks held by syz-executor.1/5756:
 #0: ffff88802c52c9d8 (hrtimer_bases.lock){-.-.}-{2:2}, at: __run_hrtimer kernel/time/hrtimer.c:1696 [inline]
 #0: ffff88802c52c9d8 (hrtimer_bases.lock){-.-.}-{2:2}, at: __hrtimer_run_queues+0x2c0/0xcc0 kernel/time/hrtimer.c:1756
 #1: ffffffff8e24bce0 (fill_pool_map-wait-type-override){+.+.}-{3:3}, at: debug_objects_fill_pool lib/debugobjects.c:614 [inline]
 #1: ffffffff8e24bce0 (fill_pool_map-wait-type-override){+.+.}-{3:3}, at: debug_object_activate+0x13e/0x540 lib/debugobjects.c:704
 #2: ffffffff8d7b4b60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
 #2: ffffffff8d7b4b60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
 #2: ffffffff8d7b4b60 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2380 [inline]
 #2: ffffffff8d7b4b60 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run4+0x107/0x460 kernel/trace/bpf_trace.c:2422

stack backtrace:
CPU: 3 PID: 5756 Comm: syz-executor.1 Not tainted 6.9.0-rc1-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
 check_noncircular+0x31a/0x400 kernel/locking/lockdep.c:2187
 check_prev_add kernel/locking/lockdep.c:3134 [inline]
 check_prevs_add kernel/locking/lockdep.c:3253 [inline]
 validate_chain kernel/locking/lockdep.c:3869 [inline]
 __lock_acquire+0x2478/0x3b30 kernel/locking/lockdep.c:5137
 lock_acquire kernel/locking/lockdep.c:5754 [inline]
 lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
 down_trylock+0x12/0x70 kernel/locking/semaphore.c:139
 __down_trylock_console_sem+0x40/0x140 kernel/printk/printk.c:323
 console_trylock kernel/printk/printk.c:2678 [inline]
 console_trylock_spinning kernel/printk/printk.c:1958 [inline]
 vprintk_emit kernel/printk/printk.c:2341 [inline]
 vprintk_emit+0xe4/0x5a0 kernel/printk/printk.c:2297
 vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:45
 _printk+0xc8/0x100 kernel/printk/printk.c:2367
 __report_bug lib/bug.c:195 [inline]
 report_bug+0x4ac/0x580 lib/bug.c:219
 handle_bug+0x3d/0x70 arch/x86/kernel/traps.c:239
 exc_invalid_op+0x17/0x50 arch/x86/kernel/traps.c:260
 asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:621
RIP: 0010:__local_bh_disable_ip+0xb8/0xd0 kernel/softirq.c:307
Code: c1 ea 03 80 3c 02 00 75 29 48 89 9d c0 14 00 00 5b 5d c3 cc cc cc cc 31 ff 31 db e8 d2 06 1a 00 eb c9 e8 4b d8 81 09 eb 82 90 <0f> 0b 90 e9 5a ff ff ff e8 6b d8 97 00 eb d0 66 0f 1f 84 00 00 00
RSP: 0000:ffffc90003eff5d0 EFLAGS: 00010006
RAX: 0000000080010002 RBX: 0000000000000201 RCX: ffffffff88ce5e4c
RDX: 1ffff1100e746038 RSI: 0000000000000201 RDI: ffffffff88ce5e98
RBP: 0000000000000000 R08: 0000000000000004 R09: 0000000000000008
R10: 0000000000000000 R11: 0000000000000002 R12: ffff888074d34980
R13: ffffc90006f29028 R14: 0000000000000000 R15: ffffea00006f7d00
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:125 [inline]
 _raw_spin_lock_bh+0x17/0x40 kernel/locking/spinlock.c:178
 spin_lock_bh include/linux/spinlock.h:356 [inline]
 __sock_map_delete net/core/sock_map.c:414 [inline]
 sock_map_delete_elem+0xc8/0x150 net/core/sock_map.c:446
 bpf_prog_2c29ac5cdc6b1842+0x42/0x46
 bpf_dispatcher_nop_func include/linux/bpf.h:1234 [inline]
 __bpf_prog_run include/linux/filter.h:657 [inline]
 bpf_prog_run include/linux/filter.h:664 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2381 [inline]
 bpf_trace_run4+0x176/0x460 kernel/trace/bpf_trace.c:2422
 trace_mm_page_alloc include/trace/events/kmem.h:177 [inline]
 __alloc_pages+0x3ad/0x2460 mm/page_alloc.c:4597
 __alloc_pages_node include/linux/gfp.h:238 [inline]
 alloc_pages_node include/linux/gfp.h:261 [inline]
 alloc_slab_page mm/slub.c:2175 [inline]
 allocate_slab mm/slub.c:2338 [inline]
 new_slab+0xcc/0x3a0 mm/slub.c:2391
 ___slab_alloc+0x670/0x16d0 mm/slub.c:3525
 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3610
 __slab_alloc_node mm/slub.c:3663 [inline]
 slab_alloc_node mm/slub.c:3835 [inline]
 kmem_cache_alloc+0x2e9/0x320 mm/slub.c:3852
 kmem_cache_zalloc include/linux/slab.h:739 [inline]
 fill_pool+0x275/0x5d0 lib/debugobjects.c:168
 debug_objects_fill_pool lib/debugobjects.c:615 [inline]
 debug_object_activate+0x151/0x540 lib/debugobjects.c:704
 debug_hrtimer_activate kernel/time/hrtimer.c:423 [inline]
 debug_activate kernel/time/hrtimer.c:478 [inline]
 enqueue_hrtimer+0x25/0x3c0 kernel/time/hrtimer.c:1090
 __run_hrtimer kernel/time/hrtimer.c:1709 [inline]
 __hrtimer_run_queues+0xaac/0xcc0 kernel/time/hrtimer.c:1756
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1818
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x43/0xb0 arch/x86/kernel/apic/apic.c:1043
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0023:0xf733ff2c
Code: ce 19 d7 0f 83 13 01 00 00 89 6c 24 04 90 89 48 08 89 c7 83 e8 08 89 dd 89 50 14 8b 08 8b 50 04 39 ce 19 d5 72 e8 8b 6c 24 04 <89> 37 83 c5 08 89 5f 04 39 6c 24 08 75 b6 8b 6c 24 08 8b 5c 24 40
RSP: 002b:00000000ffe3d900 EFLAGS: 00000246
RAX: 00000000f6ddee98 RBX: 00000000ffffffff RCX: 0000000081f5822b
RDX: 00000000ffffffff RSI: 0000000081f5822b RDI: 00000000f6ddeea0
RBP: 00000000f6ddeea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
WARNING: CPU: 3 PID: 5756 at kernel/softirq.c:307 __local_bh_disable_ip+0xb8/0xd0 kernel/softirq.c:307
Modules linked in:
CPU: 3 PID: 5756 Comm: syz-executor.1 Not tainted 6.9.0-rc1-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__local_bh_disable_ip+0xb8/0xd0 kernel/softirq.c:307
Code: c1 ea 03 80 3c 02 00 75 29 48 89 9d c0 14 00 00 5b 5d c3 cc cc cc cc 31 ff 31 db e8 d2 06 1a 00 eb c9 e8 4b d8 81 09 eb 82 90 <0f> 0b 90 e9 5a ff ff ff e8 6b d8 97 00 eb d0 66 0f 1f 84 00 00 00
RSP: 0000:ffffc90003eff5d0 EFLAGS: 00010006
RAX: 0000000080010002 RBX: 0000000000000201 RCX: ffffffff88ce5e4c
RDX: 1ffff1100e746038 RSI: 0000000000000201 RDI: ffffffff88ce5e98
RBP: 0000000000000000 R08: 0000000000000004 R09: 0000000000000008
R10: 0000000000000000 R11: 0000000000000002 R12: ffff888074d34980
R13: ffffc90006f29028 R14: 0000000000000000 R15: ffffea00006f7d00
FS:  0000000000000000(0000) GS:ffff88802c500000(0063) knlGS:000000005761d400
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000031b21000 CR3: 00000000127b6000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:125 [inline]
 _raw_spin_lock_bh+0x17/0x40 kernel/locking/spinlock.c:178
 spin_lock_bh include/linux/spinlock.h:356 [inline]
 __sock_map_delete net/core/sock_map.c:414 [inline]
 sock_map_delete_elem+0xc8/0x150 net/core/sock_map.c:446
 bpf_prog_2c29ac5cdc6b1842+0x42/0x46
 bpf_dispatcher_nop_func include/linux/bpf.h:1234 [inline]
 __bpf_prog_run include/linux/filter.h:657 [inline]
 bpf_prog_run include/linux/filter.h:664 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2381 [inline]
 bpf_trace_run4+0x176/0x460 kernel/trace/bpf_trace.c:2422
 trace_mm_page_alloc include/trace/events/kmem.h:177 [inline]
 __alloc_pages+0x3ad/0x2460 mm/page_alloc.c:4597
 __alloc_pages_node include/linux/gfp.h:238 [inline]
 alloc_pages_node include/linux/gfp.h:261 [inline]
 alloc_slab_page mm/slub.c:2175 [inline]
 allocate_slab mm/slub.c:2338 [inline]
 new_slab+0xcc/0x3a0 mm/slub.c:2391
 ___slab_alloc+0x670/0x16d0 mm/slub.c:3525
 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3610
 __slab_alloc_node mm/slub.c:3663 [inline]
 slab_alloc_node mm/slub.c:3835 [inline]
 kmem_cache_alloc+0x2e9/0x320 mm/slub.c:3852
 kmem_cache_zalloc include/linux/slab.h:739 [inline]
 fill_pool+0x275/0x5d0 lib/debugobjects.c:168
 debug_objects_fill_pool lib/debugobjects.c:615 [inline]
 debug_object_activate+0x151/0x540 lib/debugobjects.c:704
 debug_hrtimer_activate kernel/time/hrtimer.c:423 [inline]
 debug_activate kernel/time/hrtimer.c:478 [inline]
 enqueue_hrtimer+0x25/0x3c0 kernel/time/hrtimer.c:1090
 __run_hrtimer kernel/time/hrtimer.c:1709 [inline]
 __hrtimer_run_queues+0xaac/0xcc0 kernel/time/hrtimer.c:1756
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1818
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x43/0xb0 arch/x86/kernel/apic/apic.c:1043
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0023:0xf733ff2c
Code: ce 19 d7 0f 83 13 01 00 00 89 6c 24 04 90 89 48 08 89 c7 83 e8 08 89 dd 89 50 14 8b 08 8b 50 04 39 ce 19 d5 72 e8 8b 6c 24 04 <89> 37 83 c5 08 89 5f 04 39 6c 24 08 75 b6 8b 6c 24 08 8b 5c 24 40
RSP: 002b:00000000ffe3d900 EFLAGS: 00000246
RAX: 00000000f6ddee98 RBX: 00000000ffffffff RCX: 0000000081f5822b
RDX: 00000000ffffffff RSI: 0000000081f5822b RDI: 00000000f6ddeea0
RBP: 00000000f6ddeea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	19 d7                	sbb    %edx,%edi
   2:	0f 83 13 01 00 00    	jae    0x11b
   8:	89 6c 24 04          	mov    %ebp,0x4(%rsp)
   c:	90                   	nop
   d:	89 48 08             	mov    %ecx,0x8(%rax)
  10:	89 c7                	mov    %eax,%edi
  12:	83 e8 08             	sub    $0x8,%eax
  15:	89 dd                	mov    %ebx,%ebp
  17:	89 50 14             	mov    %edx,0x14(%rax)
  1a:	8b 08                	mov    (%rax),%ecx
  1c:	8b 50 04             	mov    0x4(%rax),%edx
  1f:	39 ce                	cmp    %ecx,%esi
  21:	19 d5                	sbb    %edx,%ebp
  23:	72 e8                	jb     0xd
  25:	8b 6c 24 04          	mov    0x4(%rsp),%ebp
* 29:	89 37                	mov    %esi,(%rdi) <-- trapping instruction
  2b:	83 c5 08             	add    $0x8,%ebp
  2e:	89 5f 04             	mov    %ebx,0x4(%rdi)
  31:	39 6c 24 08          	cmp    %ebp,0x8(%rsp)
  35:	75 b6                	jne    0xffffffed
  37:	8b 6c 24 08          	mov    0x8(%rsp),%ebp
  3b:	8b 5c 24 40          	mov    0x40(%rsp),%ebx