------------[ cut here ]------------
======================================================
WARNING: possible circular locking dependency detected
6.8.0-syzkaller-08951-gfe46a7dd189e #0 Not tainted
------------------------------------------------------
syz-executor.5/5104 is trying to acquire lock:
ffffffff8e126300 (console_owner){-...}-{0:0}, at: console_trylock_spinning kernel/printk/printk.c:1997 [inline]
ffffffff8e126300 (console_owner){-...}-{0:0}, at: vprintk_emit+0x3d6/0x770 kernel/printk/printk.c:2341

but task is already holding lock:
ffff8880b952c8d8 (hrtimer_bases.lock){-.-.}-{2:2}, at: __run_hrtimer kernel/time/hrtimer.c:1696 [inline]
ffff8880b952c8d8 (hrtimer_bases.lock){-.-.}-{2:2}, at: __hrtimer_run_queues+0x65a/0xd00 kernel/time/hrtimer.c:1756

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #3 (hrtimer_bases.lock){-.-.}-{2:2}:
       lock_acquire+0x1e4/0x530 kernel/locking/lockdep.c:5754
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
       lock_hrtimer_base kernel/time/hrtimer.c:175 [inline]
       hrtimer_start_range_ns+0xdf/0xc60 kernel/time/hrtimer.c:1303
       rpm_suspend+0x12c2/0x1780 drivers/base/power/runtime.c:606
       __pm_runtime_idle+0x131/0x1a0 drivers/base/power/runtime.c:1104
       pm_runtime_put include/linux/pm_runtime.h:448 [inline]
       __device_attach+0x3e5/0x520 drivers/base/dd.c:1048
       bus_probe_device+0x189/0x260 drivers/base/bus.c:532
       device_add+0x8ff/0xca0 drivers/base/core.c:3639
       serdev_controller_add+0x83/0x660 drivers/tty/serdev/core.c:782
       serdev_tty_port_register+0x163/0x260 drivers/tty/serdev/serdev-ttyport.c:302
       tty_port_register_device_attr_serdev+0xe1/0x160 drivers/tty/tty_port.c:191
       serial_core_add_one_port drivers/tty/serial/serial_core.c:3191 [inline]
       serial_core_register_port+0xee0/0x1e30 drivers/tty/serial/serial_core.c:3398
       serial8250_register_8250_port+0x1433/0x1cd0 drivers/tty/serial/8250/8250_core.c:1138
       serial_pnp_probe+0x7d5/0xa20 drivers/tty/serial/8250/8250_pnp.c:478
       pnp_device_probe+0x2bc/0x460 drivers/pnp/driver.c:111
       really_probe+0x2a0/0xc50 drivers/base/dd.c:658
       __driver_probe_device+0x1a2/0x3e0 drivers/base/dd.c:800
       driver_probe_device+0x50/0x430 drivers/base/dd.c:830
       __driver_attach+0x45f/0x710 drivers/base/dd.c:1216
       bus_for_each_dev+0x23b/0x2b0 drivers/base/bus.c:368
       bus_add_driver+0x347/0x620 drivers/base/bus.c:673
       driver_register+0x23a/0x320 drivers/base/driver.c:246
       serial8250_init+0x9e/0x170 drivers/tty/serial/8250/8250_core.c:1239
       do_one_initcall+0x23a/0x830 init/main.c:1241
       do_initcall_level+0x157/0x210 init/main.c:1303
       do_initcalls+0x3f/0x80 init/main.c:1319
       kernel_init_freeable+0x435/0x5d0 init/main.c:1550
       kernel_init+0x1d/0x2a0 init/main.c:1439
       ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
       ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243

-> #2 (&dev->power.lock){-...}-{2:2}:
       lock_acquire+0x1e4/0x530 kernel/locking/lockdep.c:5754
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
       __pm_runtime_resume+0x112/0x180 drivers/base/power/runtime.c:1171
       pm_runtime_get include/linux/pm_runtime.h:396 [inline]
       __uart_start+0x17a/0x3c0 drivers/tty/serial/serial_core.c:148
       uart_write+0x427/0x5c0 drivers/tty/serial/serial_core.c:615
       process_output_block drivers/tty/n_tty.c:574 [inline]
       n_tty_write+0xd6c/0x1230 drivers/tty/n_tty.c:2379
       iterate_tty_write drivers/tty/tty_io.c:1021 [inline]
       file_tty_write+0x551/0x9b0 drivers/tty/tty_io.c:1096
       call_write_iter include/linux/fs.h:2108 [inline]
       new_sync_write fs/read_write.c:497 [inline]
       vfs_write+0xa86/0xcb0 fs/read_write.c:590
       ksys_write+0x1a0/0x2c0 fs/read_write.c:643
       do_syscall_64+0xfd/0x240
       entry_SYSCALL_64_after_hwframe+0x6d/0x75

-> #1 (&port_lock_key){-...}-{2:2}:
       lock_acquire+0x1e4/0x530 kernel/locking/lockdep.c:5754
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
       uart_port_lock_irqsave include/linux/serial_core.h:616 [inline]
       serial8250_console_write+0x1a8/0x1840 drivers/tty/serial/8250/8250_port.c:3403
       console_emit_next_record kernel/printk/printk.c:2907 [inline]
       console_flush_all+0x867/0xfd0 kernel/printk/printk.c:2973
       console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3042
       vprintk_emit+0x5a6/0x770 kernel/printk/printk.c:2342
       _printk+0xd5/0x120 kernel/printk/printk.c:2367
       register_console+0x70a/0xcd0 kernel/printk/printk.c:3548
       univ8250_console_init+0x49/0x50 drivers/tty/serial/8250/8250_core.c:717
       console_init+0x198/0x680 kernel/printk/printk.c:3694
       start_kernel+0x2d3/0x500 init/main.c:1012
       x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:509
       x86_64_start_kernel+0x99/0xa0 arch/x86/kernel/head64.c:490
       common_startup_64+0x13e/0x147

-> #0 (console_owner){-...}-{0:0}:
       check_prev_add kernel/locking/lockdep.c:3134 [inline]
       check_prevs_add kernel/locking/lockdep.c:3253 [inline]
       validate_chain+0x18cb/0x58e0 kernel/locking/lockdep.c:3869
       __lock_acquire+0x1346/0x1fd0 kernel/locking/lockdep.c:5137
       lock_acquire+0x1e4/0x530 kernel/locking/lockdep.c:5754
       console_trylock_spinning kernel/printk/printk.c:1997 [inline]
       vprintk_emit+0x3f3/0x770 kernel/printk/printk.c:2341
       _printk+0xd5/0x120 kernel/printk/printk.c:2367
       __report_bug lib/bug.c:195 [inline]
       report_bug+0x346/0x500 lib/bug.c:219
       handle_bug+0x3e/0x70 arch/x86/kernel/traps.c:239
       exc_invalid_op+0x1a/0x50 arch/x86/kernel/traps.c:260
       asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:621
       __local_bh_disable_ip+0x1f6/0x220 kernel/softirq.c:307
       __raw_spin_lock_bh include/linux/spinlock_api_smp.h:125 [inline]
       _raw_spin_lock_bh+0x1c/0x50 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+0x97/0x140 net/core/sock_map.c:446
       bpf_prog_2c29ac5cdc6b1842+0x42/0x4a
       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+0x25c/0x490 kernel/trace/bpf_trace.c:2422
       trace_mm_page_alloc include/trace/events/kmem.h:177 [inline]
       __alloc_pages+0x657/0x680 mm/page_alloc.c:4591
       __alloc_pages_node include/linux/gfp.h:238 [inline]
       alloc_pages_node include/linux/gfp.h:261 [inline]
       alloc_slab_page+0x5f/0x160 mm/slub.c:2175
       allocate_slab mm/slub.c:2338 [inline]
       new_slab+0x84/0x2f0 mm/slub.c:2391
       ___slab_alloc+0xc73/0x1260 mm/slub.c:3525
       __slab_alloc mm/slub.c:3610 [inline]
       __slab_alloc_node mm/slub.c:3663 [inline]
       slab_alloc_node mm/slub.c:3835 [inline]
       kmem_cache_alloc+0x252/0x340 mm/slub.c:3852
       kmem_cache_zalloc include/linux/slab.h:739 [inline]
       fill_pool lib/debugobjects.c:168 [inline]
       debug_objects_fill_pool+0x4ad/0x9b0 lib/debugobjects.c:615
       debug_object_activate+0x135/0x510 lib/debugobjects.c:704
       debug_hrtimer_activate kernel/time/hrtimer.c:423 [inline]
       debug_activate kernel/time/hrtimer.c:478 [inline]
       enqueue_hrtimer+0x30/0x3a0 kernel/time/hrtimer.c:1090
       __run_hrtimer kernel/time/hrtimer.c:1709 [inline]
       __hrtimer_run_queues+0x6b5/0xd00 kernel/time/hrtimer.c:1756
       hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1818
       local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
       __sysvec_apic_timer_interrupt+0x109/0x3a0 arch/x86/kernel/apic/apic.c:1049
       instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
       sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043
       asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
       unwind_next_frame+0x680/0x2a00 arch/x86/kernel/unwind_orc.c:505
       arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
       stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
       kasan_save_stack mm/kasan/common.c:47 [inline]
       kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
       unpoison_slab_object mm/kasan/common.c:312 [inline]
       __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338
       kasan_slab_alloc include/linux/kasan.h:201 [inline]
       slab_post_alloc_hook mm/slub.c:3798 [inline]
       slab_alloc_node mm/slub.c:3845 [inline]
       kmem_cache_alloc+0x174/0x340 mm/slub.c:3852
       kmem_cache_zalloc include/linux/slab.h:739 [inline]
       fill_pool lib/debugobjects.c:168 [inline]
       debug_objects_fill_pool+0x756/0x9b0 lib/debugobjects.c:615
       __debug_object_init+0xa4/0x400 lib/debugobjects.c:627
       hrtimer_init_sleeper_on_stack kernel/time/hrtimer.c:448 [inline]
       hrtimer_nanosleep+0x11a/0x470 kernel/time/hrtimer.c:2102
       __do_sys_clock_nanosleep kernel/time/posix-timers.c:1396 [inline]
       __se_sys_clock_nanosleep+0x32d/0x3c0 kernel/time/posix-timers.c:1373
       do_syscall_64+0xfd/0x240
       entry_SYSCALL_64_after_hwframe+0x6d/0x75

other info that might help us debug this:

Chain exists of:
  console_owner --> &dev->power.lock --> hrtimer_bases.lock

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(hrtimer_bases.lock);
                               lock(&dev->power.lock);
                               lock(hrtimer_bases.lock);
  lock(console_owner);

 *** DEADLOCK ***

4 locks held by syz-executor.5/5104:
 #0: ffffffff8e81bb40 (fill_pool_map-wait-type-override){+.+.}-{3:3}, at: debug_objects_fill_pool+0x80/0x9b0 lib/debugobjects.c:614
 #1: ffff8880b952c8d8 (hrtimer_bases.lock){-.-.}-{2:2}, at: __run_hrtimer kernel/time/hrtimer.c:1696 [inline]
 #1: ffff8880b952c8d8 (hrtimer_bases.lock){-.-.}-{2:2}, at: __hrtimer_run_queues+0x65a/0xd00 kernel/time/hrtimer.c:1756
 #2: ffffffff8e81bb40 (fill_pool_map-wait-type-override){+.+.}-{3:3}, at: debug_objects_fill_pool+0x80/0x9b0 lib/debugobjects.c:614
 #3: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
 #3: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
 #3: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2380 [inline]
 #3: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run4+0x16e/0x490 kernel/trace/bpf_trace.c:2422

stack backtrace:
CPU: 1 PID: 5104 Comm: syz-executor.5 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
 check_noncircular+0x36a/0x4a0 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+0x18cb/0x58e0 kernel/locking/lockdep.c:3869
 __lock_acquire+0x1346/0x1fd0 kernel/locking/lockdep.c:5137
 lock_acquire+0x1e4/0x530 kernel/locking/lockdep.c:5754
 console_trylock_spinning kernel/printk/printk.c:1997 [inline]
 vprintk_emit+0x3f3/0x770 kernel/printk/printk.c:2341
 _printk+0xd5/0x120 kernel/printk/printk.c:2367
 __report_bug lib/bug.c:195 [inline]
 report_bug+0x346/0x500 lib/bug.c:219
 handle_bug+0x3e/0x70 arch/x86/kernel/traps.c:239
 exc_invalid_op+0x1a/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+0x1f6/0x220 kernel/softirq.c:307
Code: 2c 0b 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 80 00 00 00 75 33 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d e9 5b dd 25 0a 90 <0f> 0b 90 e9 99 fe ff ff e8 cd d4 1a 0a 41 f7 c6 00 02 00 00 0f 85
RSP: 0018:ffffc90000a085a0 EFLAGS: 00010006
RAX: 0000000080010003 RBX: ffffffff89640087 RCX: ffff8880626a3c00
RDX: ffff8880626a3c00 RSI: 0000000000000201 RDI: ffffffff89640087
RBP: ffffc90000a08668 R08: ffffffff8964004d R09: 1ffffffff259caa0
R10: dffffc0000000000 R11: ffffffffa0000888 R12: dffffc0000000000
R13: 1ffff920001410b8 R14: ffffc90000a08600 R15: 0000000000000201
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:125 [inline]
 _raw_spin_lock_bh+0x1c/0x50 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+0x97/0x140 net/core/sock_map.c:446
 bpf_prog_2c29ac5cdc6b1842+0x42/0x4a
 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+0x25c/0x490 kernel/trace/bpf_trace.c:2422
 trace_mm_page_alloc include/trace/events/kmem.h:177 [inline]
 __alloc_pages+0x657/0x680 mm/page_alloc.c:4591
 __alloc_pages_node include/linux/gfp.h:238 [inline]
 alloc_pages_node include/linux/gfp.h:261 [inline]
 alloc_slab_page+0x5f/0x160 mm/slub.c:2175
 allocate_slab mm/slub.c:2338 [inline]
 new_slab+0x84/0x2f0 mm/slub.c:2391
 ___slab_alloc+0xc73/0x1260 mm/slub.c:3525
 __slab_alloc mm/slub.c:3610 [inline]
 __slab_alloc_node mm/slub.c:3663 [inline]
 slab_alloc_node mm/slub.c:3835 [inline]
 kmem_cache_alloc+0x252/0x340 mm/slub.c:3852
 kmem_cache_zalloc include/linux/slab.h:739 [inline]
 fill_pool lib/debugobjects.c:168 [inline]
 debug_objects_fill_pool+0x4ad/0x9b0 lib/debugobjects.c:615
 debug_object_activate+0x135/0x510 lib/debugobjects.c:704
 debug_hrtimer_activate kernel/time/hrtimer.c:423 [inline]
 debug_activate kernel/time/hrtimer.c:478 [inline]
 enqueue_hrtimer+0x30/0x3a0 kernel/time/hrtimer.c:1090
 __run_hrtimer kernel/time/hrtimer.c:1709 [inline]
 __hrtimer_run_queues+0x6b5/0xd00 kernel/time/hrtimer.c:1756
 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1818
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x109/0x3a0 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:unwind_next_frame+0x680/0x2a00 arch/x86/kernel/unwind_orc.c:505
Code: 48 29 c3 48 c7 c1 20 07 04 90 48 c1 fb 02 4c 8d 3c 5b 4d 01 ff 49 01 cf 0f 84 82 00 00 00 49 89 ee e8 64 5f 54 00 49 8d 6f 04 <49> 8d 5f 05 48 89 e8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 88 1b
RSP: 0018:ffffc900047a7528 EFLAGS: 00000293

RAX: ffffffff814095ec RBX: 0000000000000000 RCX: ffff8880626a3c00
RDX: 0000000000000000 RSI: ffffffff81eccbe3 RDI: ffffffff81ecca82
RBP: ffffffff901460a8 R08: ffffffff81409480 R09: ffffc900047a76f0
R10: 0000000000000003 R11: ffffffff8180e0a0 R12: ffffffff8f9ef9f4
R13: dffffc0000000000 R14: 1ffff920008f4ec0 R15: ffffffff901460a4
 arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 unpoison_slab_object mm/kasan/common.c:312 [inline]
 __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3798 [inline]
 slab_alloc_node mm/slub.c:3845 [inline]
 kmem_cache_alloc+0x174/0x340 mm/slub.c:3852
 kmem_cache_zalloc include/linux/slab.h:739 [inline]
 fill_pool lib/debugobjects.c:168 [inline]
 debug_objects_fill_pool+0x756/0x9b0 lib/debugobjects.c:615
 __debug_object_init+0xa4/0x400 lib/debugobjects.c:627
 hrtimer_init_sleeper_on_stack kernel/time/hrtimer.c:448 [inline]
 hrtimer_nanosleep+0x11a/0x470 kernel/time/hrtimer.c:2102
 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1396 [inline]
 __se_sys_clock_nanosleep+0x32d/0x3c0 kernel/time/posix-timers.c:1373
 do_syscall_64+0xfd/0x240
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fa7edea9275
Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 f6 b9 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 8b 74 24 0c 8b 3c 24 b8 e6 00 00 00 0f 05 <44> 89 c7 48 89 04 24 e8 4f ba ff ff 48 8b 04 24 48 83 c4 28 f7 d8
RSP: 002b:00007fffe723aaf0 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 000000000000000b RCX: 00007fa7edea9275
RDX: 00007fffe723ab30 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fffe723abbc R08: 0000000000000000 R09: 00007fa7eec000b0
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032
R13: 00000000000158f2 R14: 000000000001589d R15: 0000000000000004
 </TASK>
WARNING: CPU: 1 PID: 5104 at kernel/softirq.c:307 __local_bh_disable_ip+0x1f6/0x220 kernel/softirq.c:307
Modules linked in:
CPU: 1 PID: 5104 Comm: syz-executor.5 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:__local_bh_disable_ip+0x1f6/0x220 kernel/softirq.c:307
Code: 2c 0b 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 80 00 00 00 75 33 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d e9 5b dd 25 0a 90 <0f> 0b 90 e9 99 fe ff ff e8 cd d4 1a 0a 41 f7 c6 00 02 00 00 0f 85
RSP: 0018:ffffc90000a085a0 EFLAGS: 00010006

RAX: 0000000080010003 RBX: ffffffff89640087 RCX: ffff8880626a3c00
RDX: ffff8880626a3c00 RSI: 0000000000000201 RDI: ffffffff89640087
----------------
Code disassembly (best guess):
   0:	48 29 c3             	sub    %rax,%rbx
   3:	48 c7 c1 20 07 04 90 	mov    $0xffffffff90040720,%rcx
   a:	48 c1 fb 02          	sar    $0x2,%rbx
   e:	4c 8d 3c 5b          	lea    (%rbx,%rbx,2),%r15
  12:	4d 01 ff             	add    %r15,%r15
  15:	49 01 cf             	add    %rcx,%r15
  18:	0f 84 82 00 00 00    	je     0xa0
  1e:	49 89 ee             	mov    %rbp,%r14
  21:	e8 64 5f 54 00       	call   0x545f8a
  26:	49 8d 6f 04          	lea    0x4(%r15),%rbp
* 2a:	49 8d 5f 05          	lea    0x5(%r15),%rbx <-- trapping instruction
  2e:	48 89 e8             	mov    %rbp,%rax
  31:	48 c1 e8 03          	shr    $0x3,%rax
  35:	42 0f b6 04 28       	movzbl (%rax,%r13,1),%eax
  3a:	84 c0                	test   %al,%al
  3c:	0f                   	.byte 0xf
  3d:	85                   	.byte 0x85
  3e:	88 1b                	mov    %bl,(%rbx)