====================================================== WARNING: possible circular locking dependency detected 6.9.0-rc1-syzkaller-00005-g928a87efa423 #0 Not tainted ------------------------------------------------------ syz-executor.1/7942 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: ffff88802c52a858 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x5d/0x220 kernel/time/timer.c:1052 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&base->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_timer_base+0x5d/0x220 kernel/time/timer.c:1052 __mod_timer+0x426/0xdc0 kernel/time/timer.c:1133 add_timer_global+0x8a/0xc0 kernel/time/timer.c:1331 __queue_delayed_work+0x1ba/0x2e0 kernel/workqueue.c:2567 queue_delayed_work_on+0x10e/0x130 kernel/workqueue.c:2595 psi_task_change+0x1b4/0x2e0 kernel/sched/psi.c:912 psi_enqueue kernel/sched/stats.h:139 [inline] enqueue_task kernel/sched/core.c:2112 [inline] activate_task+0x213/0x400 kernel/sched/core.c:2146 wake_up_new_task+0x574/0xc90 kernel/sched/core.c:4901 kernel_clone+0x236/0x980 kernel/fork.c:2827 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 -> #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_hash_delete_elem+0xd4/0x360 net/core/sock_map.c:939 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_run2+0x151/0x420 kernel/trace/bpf_trace.c:2420 trace_timer_start include/trace/events/timer.h:52 [inline] enqueue_timer+0x2b4/0x550 kernel/time/timer.c:664 internal_add_timer kernel/time/timer.c:689 [inline] __mod_timer+0x8d7/0xdc0 kernel/time/timer.c:1184 queue_iova drivers/iommu/dma-iommu.c:248 [inline] iommu_dma_free_iova+0x669/0x900 drivers/iommu/dma-iommu.c:818 __iommu_dma_unmap+0x1a8/0x2f0 drivers/iommu/dma-iommu.c:846 iommu_dma_unmap_sg+0x299/0x420 drivers/iommu/dma-iommu.c:1517 dma_unmap_sg_attrs+0xac/0x150 kernel/dma/mapping.c:295 ata_sg_clean drivers/ata/libata-core.c:4717 [inline] __ata_qc_complete+0x4e0/0x690 drivers/ata/libata-core.c:4809 ata_qc_complete+0x4ad/0xfe0 drivers/ata/libata-core.c:4900 ata_qc_complete_multiple+0x217/0x2f0 drivers/ata/libata-sata.c:681 ahci_qc_complete+0xce/0x2b0 drivers/ata/libahci.c:1881 ahci_handle_port_interrupt+0x255/0x15c0 drivers/ata/libahci.c:1948 ahci_port_intr drivers/ata/libahci.c:1959 [inline] ahci_handle_port_intr+0x121/0x2a0 drivers/ata/libahci.c:1990 ahci_single_level_irq_intr+0xd2/0x120 drivers/ata/libahci.c:2024 __handle_irq_event_percpu+0x229/0x7c0 kernel/irq/handle.c:158 handle_irq_event_percpu kernel/irq/handle.c:193 [inline] handle_irq_event+0xab/0x1e0 kernel/irq/handle.c:210 handle_edge_irq+0x263/0xd10 kernel/irq/chip.c:831 generic_handle_irq_desc include/linux/irqdesc.h:161 [inline] handle_irq arch/x86/kernel/irq.c:238 [inline] __common_interrupt+0xde/0x250 arch/x86/kernel/irq.c:257 common_interrupt+0x52/0xd0 arch/x86/kernel/irq.c:247 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693 other info that might help us debug this: Chain exists of: (console_sem).lock --> &rq->__lock --> &base->lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&base->lock); lock(&rq->__lock); lock(&base->lock); lock((console_sem).lock); *** DEADLOCK *** 3 locks held by syz-executor.1/7942: #0: ffff88801e4f3018 (&host->lock){-.-.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline] #0: ffff88801e4f3018 (&host->lock){-.-.}-{2:2}, at: ahci_single_level_irq_intr+0xc7/0x120 drivers/ata/libahci.c:2022 #1: ffff88802c52a858 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x5d/0x220 kernel/time/timer.c:1052 #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_run2+0xe4/0x420 kernel/trace/bpf_trace.c:2420 stack backtrace: CPU: 3 PID: 7942 Comm: syz-executor.1 Not tainted 6.9.0-rc1-syzkaller-00005-g928a87efa423 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace: __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:ffffc900062977a8 EFLAGS: 00010006 RAX: 0000000080010003 RBX: 0000000000000201 RCX: 000000009e43f8ce RDX: 1ffff11003f9e3b9 RSI: 0000000000000201 RDI: ffffffff88ce4b04 RBP: 0000000058c184bf R08: 0000000000000005 R09: 000000000000000c R10: 0000000000000008 R11: 0000000000000002 R12: 1ffff92000c52f07 R13: ffff88801fcf1c00 R14: 0000000000000000 R15: 0000000000000008 __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_hash_delete_elem+0xd4/0x360 net/core/sock_map.c:939 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_run2+0x151/0x420 kernel/trace/bpf_trace.c:2420 trace_timer_start include/trace/events/timer.h:52 [inline] enqueue_timer+0x2b4/0x550 kernel/time/timer.c:664 internal_add_timer kernel/time/timer.c:689 [inline] __mod_timer+0x8d7/0xdc0 kernel/time/timer.c:1184 queue_iova drivers/iommu/dma-iommu.c:248 [inline] iommu_dma_free_iova+0x669/0x900 drivers/iommu/dma-iommu.c:818 __iommu_dma_unmap+0x1a8/0x2f0 drivers/iommu/dma-iommu.c:846 iommu_dma_unmap_sg+0x299/0x420 drivers/iommu/dma-iommu.c:1517 dma_unmap_sg_attrs+0xac/0x150 kernel/dma/mapping.c:295 ata_sg_clean drivers/ata/libata-core.c:4717 [inline] __ata_qc_complete+0x4e0/0x690 drivers/ata/libata-core.c:4809 ata_qc_complete+0x4ad/0xfe0 drivers/ata/libata-core.c:4900 ata_qc_complete_multiple+0x217/0x2f0 drivers/ata/libata-sata.c:681 ahci_qc_complete+0xce/0x2b0 drivers/ata/libahci.c:1881 ahci_handle_port_interrupt+0x255/0x15c0 drivers/ata/libahci.c:1948 ahci_port_intr drivers/ata/libahci.c:1959 [inline] ahci_handle_port_intr+0x121/0x2a0 drivers/ata/libahci.c:1990 ahci_single_level_irq_intr+0xd2/0x120 drivers/ata/libahci.c:2024 __handle_irq_event_percpu+0x229/0x7c0 kernel/irq/handle.c:158 handle_irq_event_percpu kernel/irq/handle.c:193 [inline] handle_irq_event+0xab/0x1e0 kernel/irq/handle.c:210 handle_edge_irq+0x263/0xd10 kernel/irq/chip.c:831 generic_handle_irq_desc include/linux/irqdesc.h:161 [inline] handle_irq arch/x86/kernel/irq.c:238 [inline] __common_interrupt+0xde/0x250 arch/x86/kernel/irq.c:257 common_interrupt+0x52/0xd0 arch/x86/kernel/irq.c:247 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693 RIP: 0023:0xf7277d91 Code: 89 7c 24 08 8b 78 18 8b 44 24 0c 89 fd c1 fd 1f 03 3c f0 13 6c f0 04 8b 44 24 04 89 fb 81 e3 00 f0 ff ff 80 b8 c0 20 02 00 00 <75> 4d 89 f8 b9 ff ff ff 7e 89 ea 05 00 00 00 80 83 d2 00 39 c1 b9 RSP: 002b:00000000ffa2aac0 EFLAGS: 00000246 RAX: 00000000f73adff4 RBX: 0000000081f58000 RCX: 0000000000000d9d RDX: 0000000081f58d9d RSI: 000000000001caa3 RDI: 0000000081f5890c RBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 WARNING: CPU: 3 PID: 7942 at kernel/softirq.c:307 __local_bh_disable_ip+0xb8/0xd0 kernel/softirq.c:307 Modules linked in: CPU: 3 PID: 7942 Comm: syz-executor.1 Not tainted 6.9.0-rc1-syzkaller-00005-g928a87efa423 #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:ffffc900062977a8 EFLAGS: 00010006 RAX: 0000000080010003 RBX: 0000000000000201 RCX: 000000009e43f8ce RDX: 1ffff11003f9e3b9 RSI: 0000000000000201 RDI: ffffffff88ce4b04 RBP: 0000000058c184bf R08: 0000000000000005 R09: 000000000000000c R10: 0000000000000008 R11: 0000000000000002 R12: 1ffff92000c52f07 R13: ffff88801fcf1c00 R14: 0000000000000000 R15: 0000000000000008 FS: 0000000000000000(0000) GS:ffff88802c500000(0063) knlGS:00000000578ac400 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000002f524000 CR3: 00000000287f4000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __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_hash_delete_elem+0xd4/0x360 net/core/sock_map.c:939 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_run2+0x151/0x420 kernel/trace/bpf_trace.c:2420 trace_timer_start include/trace/events/timer.h:52 [inline] enqueue_timer+0x2b4/0x550 kernel/time/timer.c:664 internal_add_timer kernel/time/timer.c:689 [inline] __mod_timer+0x8d7/0xdc0 kernel/time/timer.c:1184 queue_iova drivers/iommu/dma-iommu.c:248 [inline] iommu_dma_free_iova+0x669/0x900 drivers/iommu/dma-iommu.c:818 __iommu_dma_unmap+0x1a8/0x2f0 drivers/iommu/dma-iommu.c:846 iommu_dma_unmap_sg+0x299/0x420 drivers/iommu/dma-iommu.c:1517 dma_unmap_sg_attrs+0xac/0x150 kernel/dma/mapping.c:295 ata_sg_clean drivers/ata/libata-core.c:4717 [inline] __ata_qc_complete+0x4e0/0x690 drivers/ata/libata-core.c:4809 ata_qc_complete+0x4ad/0xfe0 drivers/ata/libata-core.c:4900 ata_qc_complete_multiple+0x217/0x2f0 drivers/ata/libata-sata.c:681 ahci_qc_complete+0xce/0x2b0 drivers/ata/libahci.c:1881 ahci_handle_port_interrupt+0x255/0x15c0 drivers/ata/libahci.c:1948 ahci_port_intr drivers/ata/libahci.c:1959 [inline] ahci_handle_port_intr+0x121/0x2a0 drivers/ata/libahci.c:1990 ahci_single_level_irq_intr+0xd2/0x120 drivers/ata/libahci.c:2024 __handle_irq_event_percpu+0x229/0x7c0 kernel/irq/handle.c:158 handle_irq_event_percpu kernel/irq/handle.c:193 [inline] handle_irq_event+0xab/0x1e0 kernel/irq/handle.c:210 handle_edge_irq+0x263/0xd10 kernel/irq/chip.c:831 generic_handle_irq_desc include/linux/irqdesc.h:161 [inline] handle_irq arch/x86/kernel/irq.c:238 [inline] __common_interrupt+0xde/0x250 arch/x86/kernel/irq.c:257 common_interrupt+0x52/0xd0 arch/x86/kernel/irq.c:247 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693 RIP: 0023:0xf7277d91 Code: 89 7c 24 08 8b 78 18 8b 44 24 0c 89 fd c1 fd 1f 03 3c f0 13 6c f0 04 8b 44 24 04 89 fb 81 e3 00 f0 ff ff 80 b8 c0 20 02 00 00 <75> 4d 89 f8 b9 ff ff ff 7e 89 ea 05 00 00 00 80 83 d2 00 39 c1 b9 RSP: 002b:00000000ffa2aac0 EFLAGS: 00000246 RAX: 00000000f73adff4 RBX: 0000000081f58000 RCX: 0000000000000d9d RDX: 0000000081f58d9d RSI: 000000000001caa3 RDI: 0000000081f5890c RBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess): 0: 89 7c 24 08 mov %edi,0x8(%rsp) 4: 8b 78 18 mov 0x18(%rax),%edi 7: 8b 44 24 0c mov 0xc(%rsp),%eax b: 89 fd mov %edi,%ebp d: c1 fd 1f sar $0x1f,%ebp 10: 03 3c f0 add (%rax,%rsi,8),%edi 13: 13 6c f0 04 adc 0x4(%rax,%rsi,8),%ebp 17: 8b 44 24 04 mov 0x4(%rsp),%eax 1b: 89 fb mov %edi,%ebx 1d: 81 e3 00 f0 ff ff and $0xfffff000,%ebx 23: 80 b8 c0 20 02 00 00 cmpb $0x0,0x220c0(%rax) * 2a: 75 4d jne 0x79 <-- trapping instruction 2c: 89 f8 mov %edi,%eax 2e: b9 ff ff ff 7e mov $0x7effffff,%ecx 33: 89 ea mov %ebp,%edx 35: 05 00 00 00 80 add $0x80000000,%eax 3a: 83 d2 00 adc $0x0,%edx 3d: 39 c1 cmp %eax,%ecx 3f: b9 .byte 0xb9