------------[ cut here ]------------ ====================================================== WARNING: possible circular locking dependency detected 5.15.159-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.0/7021 is trying to acquire lock: ffffffff8c7fc338 ((console_sem).lock){..-.}-{2:2}, at: down_trylock+0x1c/0xa0 kernel/locking/semaphore.c:138 but task is already holding lock: ffff8880b9a28098 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x120/0x260 kernel/time/timer.c:946 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&base->lock){-.-.}-{2:2}: lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162 lock_timer_base+0x120/0x260 kernel/time/timer.c:946 __mod_timer+0x1d6/0xeb0 kernel/time/timer.c:1019 queue_delayed_work_on+0x156/0x250 kernel/workqueue.c:1715 psi_enqueue kernel/sched/stats.h:104 [inline] enqueue_task+0x2fe/0x3a0 kernel/sched/core.c:1973 activate_task kernel/sched/core.c:2005 [inline] wake_up_new_task+0x515/0xb60 kernel/sched/core.c:4522 kernel_clone+0x44e/0x960 kernel/fork.c:2628 kernel_thread+0x168/0x1e0 kernel/fork.c:2656 rest_init+0x21/0x330 init/main.c:706 start_kernel+0x48c/0x540 init/main.c:1140 secondary_startup_64_no_verify+0xb1/0xbb -> #2 (&rq->__lock){-.-.}-{2:2}: lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623 _raw_spin_lock_nested+0x2d/0x40 kernel/locking/spinlock.c:368 raw_spin_rq_lock_nested+0x26/0x140 kernel/sched/core.c:475 raw_spin_rq_lock kernel/sched/sched.h:1326 [inline] rq_lock kernel/sched/sched.h:1621 [inline] task_fork_fair+0x5d/0x350 kernel/sched/fair.c:11480 sched_cgroup_fork+0x2d3/0x330 kernel/sched/core.c:4466 copy_process+0x224a/0x3ef0 kernel/fork.c:2320 kernel_clone+0x210/0x960 kernel/fork.c:2604 kernel_thread+0x168/0x1e0 kernel/fork.c:2656 rest_init+0x21/0x330 init/main.c:706 start_kernel+0x48c/0x540 init/main.c:1140 secondary_startup_64_no_verify+0xb1/0xbb -> #1 (&p->pi_lock){-.-.}-{2:2}: lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162 try_to_wake_up+0xae/0x1300 kernel/sched/core.c:4030 up+0x6e/0x90 kernel/locking/semaphore.c:190 __up_console_sem+0x11a/0x1e0 kernel/printk/printk.c:256 console_unlock+0x1145/0x12b0 kernel/printk/printk.c:2760 vprintk_emit+0xbf/0x150 kernel/printk/printk.c:2274 _printk+0xd1/0x120 kernel/printk/printk.c:2299 set_capacity_and_notify+0x2bf/0x360 block/genhd.c:86 loop_set_size+0x44/0xa0 drivers/block/loop.c:286 loop_configure+0xf0c/0x1470 drivers/block/loop.c:1307 lo_ioctl+0x933/0x23b0 blkdev_ioctl+0x333/0x6b0 block/ioctl.c:604 block_ioctl+0xb1/0xf0 block/fops.c:493 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 -> #0 ((console_sem).lock){..-.}-{2:2}: check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain+0x1649/0x5930 kernel/locking/lockdep.c:3788 __lock_acquire+0x1295/0x1ff0 kernel/locking/lockdep.c:5012 lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162 down_trylock+0x1c/0xa0 kernel/locking/semaphore.c:138 __down_trylock_console_sem+0x105/0x250 kernel/printk/printk.c:239 console_trylock kernel/printk/printk.c:2575 [inline] console_trylock_spinning+0x8a/0x3f0 kernel/printk/printk.c:1867 vprintk_emit+0xa6/0x150 kernel/printk/printk.c:2273 _printk+0xd1/0x120 kernel/printk/printk.c:2299 report_bug+0x1e5/0x2e0 lib/bug.c:195 handle_bug+0x3d/0x70 arch/x86/kernel/traps.c:239 exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:259 asm_exc_invalid_op+0x16/0x20 arch/x86/include/asm/idtentry.h:566 copy_from_user_nofault+0x15c/0x1c0 bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline] ____bpf_probe_read_user kernel/trace/bpf_trace.c:166 [inline] bpf_probe_read_user+0x26/0x70 kernel/trace/bpf_trace.c:163 bpf_prog_64e63e24eee51416+0x3a/0x4e4 bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline] __bpf_prog_run include/linux/filter.h:628 [inline] bpf_prog_run include/linux/filter.h:635 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:1880 [inline] bpf_trace_run3+0x1d1/0x380 kernel/trace/bpf_trace.c:1918 trace_timer_start include/trace/events/timer.h:52 [inline] enqueue_timer+0x3ae/0x540 kernel/time/timer.c:586 internal_add_timer kernel/time/timer.c:611 [inline] __mod_timer+0xa60/0xeb0 kernel/time/timer.c:1062 dsp_cmx_send+0x21bb/0x2240 drivers/isdn/mISDN/dsp_cmx.c:1850 call_timer_fn+0x16d/0x560 kernel/time/timer.c:1451 expire_timers kernel/time/timer.c:1496 [inline] __run_timers+0x67c/0x890 kernel/time/timer.c:1767 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780 __do_softirq+0x3b3/0x93a kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x155/0x240 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 __vmcs_readl arch/x86/kvm/vmx/vmx_ops.h:74 [inline] vmcs_read32 arch/x86/kvm/vmx/vmx_ops.h:119 [inline] vmx_read_guest_seg_ar arch/x86/kvm/vmx/vmx.c:772 [inline] vmx_get_cpl+0x13c/0x260 arch/x86/kvm/vmx/vmx.c:3374 kvm_fetch_guest_virt+0x50/0x170 arch/x86/kvm/x86.c:6657 __do_insn_fetch_bytes+0x2d1/0x720 arch/x86/kvm/emulate.c:961 x86_decode_insn+0x366/0x4510 arch/x86/kvm/emulate.c:5106 x86_decode_emulated_instruction arch/x86/kvm/x86.c:8093 [inline] x86_emulate_instruction+0x250/0x20e0 arch/x86/kvm/x86.c:8134 kvm_emulate_instruction arch/x86/kvm/x86.c:8287 [inline] handle_ud+0x2aa/0x3f0 arch/x86/kvm/x86.c:6792 __vmx_handle_exit arch/x86/kvm/vmx/vmx.c:6155 [inline] vmx_handle_exit+0xb93/0x1820 arch/x86/kvm/vmx/vmx.c:6172 vcpu_enter_guest+0x3367/0x9850 arch/x86/kvm/x86.c:10061 vcpu_run arch/x86/kvm/x86.c:10151 [inline] kvm_arch_vcpu_ioctl_run+0xa5e/0x1f80 arch/x86/kvm/x86.c:10388 kvm_vcpu_ioctl+0x7f0/0xcf0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3893 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 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 *** 6 locks held by syz-executor.0/7021: #0: ffff88805c4280c8 (&vcpu->mutex){+.+.}-{3:3}, at: kvm_vcpu_ioctl+0x1d4/0xcf0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3870 #1: ffffc90002e144a0 (&kvm->srcu){....}-{0:0}, at: rcu_lock_acquire+0x9/0x30 include/linux/rcupdate.h:312 #2: ffffc90000007be0 ((&dsp_spl_tl)){+.-.}-{0:0}, at: lockdep_copy_map include/linux/lockdep.h:45 [inline] #2: ffffc90000007be0 ((&dsp_spl_tl)){+.-.}-{0:0}, at: call_timer_fn+0xbe/0x560 kernel/time/timer.c:1441 #3: ffffffff8d7a4e18 (dsp_lock){..-.}-{2:2}, at: dsp_cmx_send+0x22/0x2240 drivers/isdn/mISDN/dsp_cmx.c:1643 #4: ffff8880b9a28098 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x120/0x260 kernel/time/timer.c:946 #5: ffffffff8c91fae0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:311 stack backtrace: CPU: 0 PID: 7021 Comm: syz-executor.0 Not tainted 5.15.159-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 check_noncircular+0x2f8/0x3b0 kernel/locking/lockdep.c:2133 check_prev_add kernel/locking/lockdep.c:3053 [inline] check_prevs_add kernel/locking/lockdep.c:3172 [inline] validate_chain+0x1649/0x5930 kernel/locking/lockdep.c:3788 __lock_acquire+0x1295/0x1ff0 kernel/locking/lockdep.c:5012 lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162 down_trylock+0x1c/0xa0 kernel/locking/semaphore.c:138 __down_trylock_console_sem+0x105/0x250 kernel/printk/printk.c:239 console_trylock kernel/printk/printk.c:2575 [inline] console_trylock_spinning+0x8a/0x3f0 kernel/printk/printk.c:1867 vprintk_emit+0xa6/0x150 kernel/printk/printk.c:2273 _printk+0xd1/0x120 kernel/printk/printk.c:2299 report_bug+0x1e5/0x2e0 lib/bug.c:195 handle_bug+0x3d/0x70 arch/x86/kernel/traps.c:239 exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:259 asm_exc_invalid_op+0x16/0x20 arch/x86/include/asm/idtentry.h:566 RIP: 0010:copy_from_user_nofault+0x15c/0x1c0 mm/maccess.c:226 Code: db 48 c7 c0 f2 ff ff ff 48 0f 44 c5 eb 0c e8 8b ce d5 ff 48 c7 c0 f2 ff ff ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 74 ce d5 ff <0f> 0b e9 1e ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c ef fe ff RSP: 0018:ffffc90000007788 EFLAGS: 00010046 RAX: ffffffff81aa8e4c RBX: 0000000000000000 RCX: ffff88802205bb80 RDX: 0000000000000103 RSI: 0000000000000000 RDI: 0000000000000000 RBP: dffffc0000000000 R08: ffffffff81aa8d5d R09: fffffbfff1f7f019 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffffb2ec0000 R13: 0000000000000008 R14: ffffffffb2ec0000 R15: ffffc900000077e8 bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline] ____bpf_probe_read_user kernel/trace/bpf_trace.c:166 [inline] bpf_probe_read_user+0x26/0x70 kernel/trace/bpf_trace.c:163 bpf_prog_64e63e24eee51416+0x3a/0x4e4 bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline] __bpf_prog_run include/linux/filter.h:628 [inline] bpf_prog_run include/linux/filter.h:635 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:1880 [inline] bpf_trace_run3+0x1d1/0x380 kernel/trace/bpf_trace.c:1918 trace_timer_start include/trace/events/timer.h:52 [inline] enqueue_timer+0x3ae/0x540 kernel/time/timer.c:586 internal_add_timer kernel/time/timer.c:611 [inline] __mod_timer+0xa60/0xeb0 kernel/time/timer.c:1062 dsp_cmx_send+0x21bb/0x2240 drivers/isdn/mISDN/dsp_cmx.c:1850 call_timer_fn+0x16d/0x560 kernel/time/timer.c:1451 expire_timers kernel/time/timer.c:1496 [inline] __run_timers+0x67c/0x890 kernel/time/timer.c:1767 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780 __do_softirq+0x3b3/0x93a kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x155/0x240 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:__vmcs_readl arch/x86/kvm/vmx/vmx_ops.h:74 [inline] RIP: 0010:vmcs_read32 arch/x86/kvm/vmx/vmx_ops.h:119 [inline] RIP: 0010:vmx_read_guest_seg_ar arch/x86/kvm/vmx/vmx.c:772 [inline] RIP: 0010:vmx_get_cpl+0x13c/0x260 arch/x86/kvm/vmx/vmx.c:3374 Code: 3b 84 c0 0f 85 b4 00 00 00 49 81 c6 7c 26 00 00 45 89 2c 24 85 ed 75 38 0f 1f 44 00 00 e8 cc 98 5f 00 b8 18 48 00 00 0f 78 c3 <3e> 77 0a 6a 00 50 e8 19 a5 02 00 58 5b 4c 89 f0 48 c1 e8 03 42 0f RSP: 0018:ffffc90002feefc0 EFLAGS: 00000202 RAX: 0000000000004818 RBX: 0000000000000093 RCX: 0000000000040000 RDX: ffffc90011279000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: 0000000000000000 R08: ffffffff8120c3c7 R09: ffffed100b88504d R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88805c42a630 R13: 00000000000008f0 R14: ffff88805c42a67c R15: dffffc0000000000 kvm_fetch_guest_virt+0x50/0x170 arch/x86/kvm/x86.c:6657 __do_insn_fetch_bytes+0x2d1/0x720 arch/x86/kvm/emulate.c:961 x86_decode_insn+0x366/0x4510 arch/x86/kvm/emulate.c:5106 x86_decode_emulated_instruction arch/x86/kvm/x86.c:8093 [inline] x86_emulate_instruction+0x250/0x20e0 arch/x86/kvm/x86.c:8134 kvm_emulate_instruction arch/x86/kvm/x86.c:8287 [inline] handle_ud+0x2aa/0x3f0 arch/x86/kvm/x86.c:6792 __vmx_handle_exit arch/x86/kvm/vmx/vmx.c:6155 [inline] vmx_handle_exit+0xb93/0x1820 arch/x86/kvm/vmx/vmx.c:6172 vcpu_enter_guest+0x3367/0x9850 arch/x86/kvm/x86.c:10061 vcpu_run arch/x86/kvm/x86.c:10151 [inline] kvm_arch_vcpu_ioctl_run+0xa5e/0x1f80 arch/x86/kvm/x86.c:10388 kvm_vcpu_ioctl+0x7f0/0xcf0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3893 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fd4874a2ee9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd485a160c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd4875d1f80 RCX: 00007fd4874a2ee9 RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000007 RBP: 00007fd4874ef49e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fd4875d1f80 R15: 00007fffc69fe298 WARNING: CPU: 0 PID: 7021 at mm/maccess.c:226 copy_from_user_nofault+0x15c/0x1c0 Modules linked in: CPU: 0 PID: 7021 Comm: syz-executor.0 Not tainted 5.15.159-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:copy_from_user_nofault+0x15c/0x1c0 mm/maccess.c:226 Code: db 48 c7 c0 f2 ff ff ff 48 0f 44 c5 eb 0c e8 8b ce d5 ff 48 c7 c0 f2 ff ff ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 74 ce d5 ff <0f> 0b e9 1e ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c ef fe ff RSP: 0018:ffffc90000007788 EFLAGS: 00010046 RAX: ffffffff81aa8e4c RBX: 0000000000000000 RCX: ffff88802205bb80 RDX: 0000000000000103 RSI: 0000000000000000 RDI: 0000000000000000 RBP: dffffc0000000000 R08: ffffffff81aa8d5d R09: fffffbfff1f7f019 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffffb2ec0000 R13: 0000000000000008 R14: ffffffffb2ec0000 R15: ffffc900000077e8 FS: 00007fd485a166c0(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000007d51a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline] ____bpf_probe_read_user kernel/trace/bpf_trace.c:166 [inline] bpf_probe_read_user+0x26/0x70 kernel/trace/bpf_trace.c:163 bpf_prog_64e63e24eee51416+0x3a/0x4e4 bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline] __bpf_prog_run include/linux/filter.h:628 [inline] bpf_prog_run include/linux/filter.h:635 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:1880 [inline] bpf_trace_run3+0x1d1/0x380 kernel/trace/bpf_trace.c:1918 trace_timer_start include/trace/events/timer.h:52 [inline] enqueue_timer+0x3ae/0x540 kernel/time/timer.c:586 internal_add_timer kernel/time/timer.c:611 [inline] __mod_timer+0xa60/0xeb0 kernel/time/timer.c:1062 dsp_cmx_send+0x21bb/0x2240 drivers/isdn/mISDN/dsp_cmx.c:1850 call_timer_fn+0x16d/0x560 kernel/time/timer.c:1451 expire_timers kernel/time/timer.c:1496 [inline] __run_timers+0x67c/0x890 kernel/time/timer.c:1767 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780 __do_softirq+0x3b3/0x93a kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x155/0x240 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:__vmcs_readl arch/x86/kvm/vmx/vmx_ops.h:74 [inline] RIP: 0010:vmcs_read32 arch/x86/kvm/vmx/vmx_ops.h:119 [inline] RIP: 0010:vmx_read_guest_seg_ar arch/x86/kvm/vmx/vmx.c:772 [inline] RIP: 0010:vmx_get_cpl+0x13c/0x260 arch/x86/kvm/vmx/vmx.c:3374 Code: 3b 84 c0 0f 85 b4 00 00 00 49 81 c6 7c 26 00 00 45 89 2c 24 85 ed 75 38 0f 1f 44 00 00 e8 cc 98 5f 00 b8 18 48 00 00 0f 78 c3 <3e> 77 0a 6a 00 50 e8 19 a5 02 00 58 5b 4c 89 f0 48 c1 e8 03 42 0f RSP: 0018:ffffc90002feefc0 EFLAGS: 00000202 RAX: 0000000000004818 RBX: 0000000000000093 RCX: 0000000000040000 RDX: ffffc90011279000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: 0000000000000000 R08: ffffffff8120c3c7 R09: ffffed100b88504d R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88805c42a630 R13: 00000000000008f0 R14: ffff88805c42a67c R15: dffffc0000000000 kvm_fetch_guest_virt+0x50/0x170 arch/x86/kvm/x86.c:6657 __do_insn_fetch_bytes+0x2d1/0x720 arch/x86/kvm/emulate.c:961 x86_decode_insn+0x366/0x4510 arch/x86/kvm/emulate.c:5106 x86_decode_emulated_instruction arch/x86/kvm/x86.c:8093 [inline] x86_emulate_instruction+0x250/0x20e0 arch/x86/kvm/x86.c:8134 kvm_emulate_instruction arch/x86/kvm/x86.c:8287 [inline] handle_ud+0x2aa/0x3f0 arch/x86/kvm/x86.c:6792 __vmx_handle_exit arch/x86/kvm/vmx/vmx.c:6155 [inline] vmx_handle_exit+0xb93/0x1820 arch/x86/kvm/vmx/vmx.c:6172 vcpu_enter_guest+0x3367/0x9850 arch/x86/kvm/x86.c:10061 vcpu_run arch/x86/kvm/x86.c:10151 [inline] kvm_arch_vcpu_ioctl_run+0xa5e/0x1f80 arch/x86/kvm/x86.c:10388 kvm_vcpu_ioctl+0x7f0/0xcf0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3893 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fd4874a2ee9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd485a160c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd4875d1f80 RCX: 00007fd4874a2ee9 RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000007 RBP: 00007fd4874ef49e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fd4875d1f80 R15: 00007fffc69fe298 ---------------- Code disassembly (best guess): 0: 3b 84 c0 0f 85 b4 00 cmp 0xb4850f(%rax,%rax,8),%eax 7: 00 00 add %al,(%rax) 9: 49 81 c6 7c 26 00 00 add $0x267c,%r14 10: 45 89 2c 24 mov %r13d,(%r12) 14: 85 ed test %ebp,%ebp 16: 75 38 jne 0x50 18: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 1d: e8 cc 98 5f 00 call 0x5f98ee 22: b8 18 48 00 00 mov $0x4818,%eax 27: 0f 78 c3 vmread %rax,%rbx * 2a: 3e 77 0a ja,pt 0x37 <-- trapping instruction 2d: 6a 00 push $0x0 2f: 50 push %rax 30: e8 19 a5 02 00 call 0x2a54e 35: 58 pop %rax 36: 5b pop %rbx 37: 4c 89 f0 mov %r14,%rax 3a: 48 c1 e8 03 shr $0x3,%rax 3e: 42 rex.X 3f: 0f .byte 0xf