============================= WARNING: suspicious RCU usage 5.7.0-rc7-next-20200525-syzkaller #0 Not tainted ----------------------------- kernel/rcu/tree.c:715 RCU dynticks_nesting counter underflow/zero!! other info that might help us debug this: RCU used illegally from idle CPU! rcu_scheduler_active = 2, debug_locks = 1 RCU used illegally from extended quiescent state! no locks held by syz-executor.5/8375. stack backtrace: CPU: 0 PID: 8375 Comm: syz-executor.5 Not tainted 5.7.0-rc7-next-20200525-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x18f/0x20d lib/dump_stack.c:118 rcu_irq_exit_preempt+0x1fa/0x250 kernel/rcu/tree.c:715 idtentry_exit+0x9e/0xc0 arch/x86/entry/common.c:583 exc_general_protection+0x23d/0x520 arch/x86/kernel/traps.c:506 asm_exc_general_protection+0x1e/0x30 arch/x86/include/asm/idtentry.h:353 RIP: 0010:kvm_fastop_exception+0xb68/0xfe8 Code: f2 ff ff ff 48 31 db e9 fb c9 2a f9 b8 f2 ff ff ff 48 31 f6 e9 ff c9 2a f9 31 c0 e9 ec 2c 2b f9 b8 fb ff ff ff e9 13 a9 31 f9 fb ff ff ff 31 c0 31 d2 e9 33 a9 31 f9 31 db e9 2a 0b 42 f9 31 RSP: 0018:ffffc90002d27a30 EFLAGS: 00010216 RAX: 0000000000040000 RBX: ffff888055cb0040 RCX: 0000000000000122 RDX: 0000000000013007 RSI: ffffc90002d27a98 RDI: 0000000000000122 RBP: 0000000000000122 R08: ffff888098de4100 R09: fffffbfff131f481 R10: ffffffff898fa403 R11: fffffbfff131f480 R12: 0000000000000122 R13: 0000000000000078 R14: 0000000000000006 R15: ffffffff88244b5c paravirt_read_msr_safe arch/x86/include/asm/paravirt.h:178 [inline] vmx_create_vcpu+0x184/0x2b40 arch/x86/kvm/vmx/vmx.c:6827 kvm_arch_vcpu_create+0x6a8/0xb30 arch/x86/kvm/x86.c:9427 kvm_vm_ioctl_create_vcpu arch/x86/kvm/../../../virt/kvm/kvm_main.c:3043 [inline] kvm_vm_ioctl+0x15b7/0x2460 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3603 vfs_ioctl fs/ioctl.c:48 [inline] ksys_ioctl+0x11a/0x180 fs/ioctl.c:753 __do_sys_ioctl fs/ioctl.c:762 [inline] __se_sys_ioctl fs/ioctl.c:760 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:760 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:353 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45ca29 Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f81f14b4c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00000000004e73c0 RCX: 000000000045ca29 RDX: 0000000000000000 RSI: 000000000000ae41 RDI: 0000000000000005 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000396 R14: 00000000004c62c6 R15: 00007f81f14b56d4 ============================= WARNING: suspicious RCU usage 5.7.0-rc7-next-20200525-syzkaller #0 Not tainted ----------------------------- kernel/rcu/tree.c:717 RCU in extended quiescent state!! other info that might help us debug this: RCU used illegally from idle CPU! rcu_scheduler_active = 2, debug_locks = 1 RCU used illegally from extended quiescent state! no locks held by syz-executor.5/8375. stack backtrace: CPU: 0 PID: 8375 Comm: syz-executor.5 Not tainted 5.7.0-rc7-next-20200525-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x18f/0x20d lib/dump_stack.c:118 idtentry_exit+0x9e/0xc0 arch/x86/entry/common.c:583 exc_general_protection+0x23d/0x520 arch/x86/kernel/traps.c:506 asm_exc_general_protection+0x1e/0x30 arch/x86/include/asm/idtentry.h:353 RIP: 0010:kvm_fastop_exception+0xb68/0xfe8 Code: f2 ff ff ff 48 31 db e9 fb c9 2a f9 b8 f2 ff ff ff 48 31 f6 e9 ff c9 2a f9 31 c0 e9 ec 2c 2b f9 b8 fb ff ff ff e9 13 a9 31 f9 fb ff ff ff 31 c0 31 d2 e9 33 a9 31 f9 31 db e9 2a 0b 42 f9 31 RSP: 0018:ffffc90002d27a30 EFLAGS: 00010216 RAX: 0000000000040000 RBX: ffff888055cb0040 RCX: 0000000000000122 RDX: 0000000000013007 RSI: ffffc90002d27a98 RDI: 0000000000000122 RBP: 0000000000000122 R08: ffff888098de4100 R09: fffffbfff131f481 R10: ffffffff898fa403 R11: fffffbfff131f480 R12: 0000000000000122 R13: 0000000000000078 R14: 0000000000000006 R15: ffffffff88244b5c paravirt_read_msr_safe arch/x86/include/asm/paravirt.h:178 [inline] vmx_create_vcpu+0x184/0x2b40 arch/x86/kvm/vmx/vmx.c:6827 kvm_arch_vcpu_create+0x6a8/0xb30 arch/x86/kvm/x86.c:9427 kvm_vm_ioctl_create_vcpu arch/x86/kvm/../../../virt/kvm/kvm_main.c:3043 [inline] kvm_vm_ioctl+0x15b7/0x2460 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3603 vfs_ioctl fs/ioctl.c:48 [inline] ksys_ioctl+0x11a/0x180 fs/ioctl.c:753 __do_sys_ioctl fs/ioctl.c:762 [inline] __se_sys_ioctl fs/ioctl.c:760 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:760 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:353 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45ca29 Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f81f14b4c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00000000004e73c0 RCX: 000000000045ca29 RDX: 0000000000000000 RSI: 000000000000ae41 RDI: 0000000000000005 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000396 R14: 00000000004c62c6 R15: 00007f81f14b56d4 ============================= WARNING: suspicious RCU usage 5.7.0-rc7-next-20200525-syzkaller #0 Not tainted ----------------------------- include/trace/events/rcu.h:27 suspicious rcu_dereference_check() usage! other info that might help us debug this: RCU used illegally from idle CPU! rcu_scheduler_active = 2, debug_locks = 1 RCU used illegally from extended quiescent state! no locks held by syz-executor.5/8375. stack backtrace: CPU: 0 PID: 8375 Comm: syz-executor.5 Not tainted 5.7.0-rc7-next-20200525-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x18f/0x20d lib/dump_stack.c:118 trace_rcu_utilization include/trace/events/rcu.h:27 [inline] trace_rcu_utilization include/trace/events/rcu.h:27 [inline] rcu_note_context_switch+0x113d/0x1b20 kernel/rcu/tree_plugin.h:293 __schedule+0x22b/0x1f70 kernel/sched/core.c:4058 preempt_schedule_irq+0xb0/0x150 kernel/sched/core.c:4380 idtentry_exit+0xb9/0xc0 arch/x86/entry/common.c:585 exc_general_protection+0x23d/0x520 arch/x86/kernel/traps.c:506 asm_exc_general_protection+0x1e/0x30 arch/x86/include/asm/idtentry.h:353 RIP: 0010:kvm_fastop_exception+0xb68/0xfe8 Code: f2 ff ff ff 48 31 db e9 fb c9 2a f9 b8 f2 ff ff ff 48 31 f6 e9 ff c9 2a f9 31 c0 e9 ec 2c 2b f9 b8 fb ff ff ff e9 13 a9 31 f9 fb ff ff ff 31 c0 31 d2 e9 33 a9 31 f9 31 db e9 2a 0b 42 f9 31 RSP: 0018:ffffc90002d27a30 EFLAGS: 00010216 RAX: 0000000000040000 RBX: ffff888055cb0040 RCX: 0000000000000122 RDX: 0000000000013007 RSI: ffffc90002d27a98 RDI: 0000000000000122 RBP: 0000000000000122 R08: ffff888098de4100 R09: fffffbfff131f481 R10: ffffffff898fa403 R11: fffffbfff131f480 R12: 0000000000000122 R13: 0000000000000078 R14: 0000000000000006 R15: ffffffff88244b5c paravirt_read_msr_safe arch/x86/include/asm/paravirt.h:178 [inline] vmx_create_vcpu+0x184/0x2b40 arch/x86/kvm/vmx/vmx.c:6827 kvm_arch_vcpu_create+0x6a8/0xb30 arch/x86/kvm/x86.c:9427 kvm_vm_ioctl_create_vcpu arch/x86/kvm/../../../virt/kvm/kvm_main.c:3043 [inline] kvm_vm_ioctl+0x15b7/0x2460 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3603 vfs_ioctl fs/ioctl.c:48 [inline] ksys_ioctl+0x11a/0x180 fs/ioctl.c:753 __do_sys_ioctl fs/ioctl.c:762 [inline] __se_sys_ioctl fs/ioctl.c:760 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:760 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:353 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45ca29 Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f81f14b4c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00000000004e73c0 RCX: 000000000045ca29 RDX: 0000000000000000 RSI: 000000000000ae41 RDI: 0000000000000005 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000396 R14: 00000000004c62c6 R15: 00007f81f14b56d4 ============================= WARNING: suspicious RCU usage 5.7.0-rc7-next-20200525-syzkaller #0 Not tainted ----------------------------- kernel/sched/sched.h:2343 suspicious rcu_dereference_check() usage! other info that might help us debug this: RCU used illegally from idle CPU! rcu_scheduler_active = 2, debug_locks = 0 RCU used illegally from extended quiescent state! 1 lock held by syz-executor.5/8375: #0: ffff8880ae637d58 (&rq->lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1263 [inline] #0: ffff8880ae637d58 (&rq->lock){-.-.}-{2:2}, at: __schedule+0x233/0x1f70 kernel/sched/core.c:4068 stack backtrace: CPU: 0 PID: 8375 Comm: syz-executor.5 Not tainted 5.7.0-rc7-next-20200525-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x18f/0x20d lib/dump_stack.c:118 cpufreq_update_util kernel/sched/sched.h:2343 [inline] cfs_rq_util_change kernel/sched/fair.c:3284 [inline] update_load_avg+0x13de/0x1c60 kernel/sched/fair.c:3804 put_prev_entity+0xc1/0x2a0 kernel/sched/fair.c:4490 put_prev_task_fair+0x38/0x70 kernel/sched/fair.c:7120 put_prev_task kernel/sched/sched.h:1807 [inline] put_prev_task_balance kernel/sched/core.c:3953 [inline] pick_next_task kernel/sched/core.c:3989 [inline] __schedule+0x140c/0x1f70 kernel/sched/core.c:4090 preempt_schedule_irq+0xb0/0x150 kernel/sched/core.c:4380 idtentry_exit+0xb9/0xc0 arch/x86/entry/common.c:585 exc_general_protection+0x23d/0x520 arch/x86/kernel/traps.c:506 asm_exc_general_protection+0x1e/0x30 arch/x86/include/asm/idtentry.h:353 RIP: 0010:kvm_fastop_exception+0xb68/0xfe8 Code: f2 ff ff ff 48 31 db e9 fb c9 2a f9 b8 f2 ff ff ff 48 31 f6 e9 ff c9 2a f9 31 c0 e9 ec 2c 2b f9 b8 fb ff ff ff e9 13 a9 31 f9 fb ff ff ff 31 c0 31 d2 e9 33 a9 31 f9 31 db e9 2a 0b 42 f9 31 RSP: 0018:ffffc90002d27a30 EFLAGS: 00010216 RAX: 0000000000040000 RBX: ffff888055cb0040 RCX: 0000000000000122 RDX: 0000000000013007 RSI: ffffc90002d27a98 RDI: 0000000000000122 RBP: 0000000000000122 R08: ffff888098de4100 R09: fffffbfff131f481 R10: ffffffff898fa403 R11: fffffbfff131f480 R12: 0000000000000122 R13: 0000000000000078 R14: 0000000000000006 R15: ffffffff88244b5c paravirt_read_msr_safe arch/x86/include/asm/paravirt.h:178 [inline] vmx_create_vcpu+0x184/0x2b40 arch/x86/kvm/vmx/vmx.c:6827 kvm_arch_vcpu_create+0x6a8/0xb30 arch/x86/kvm/x86.c:9427 kvm_vm_ioctl_create_vcpu arch/x86/kvm/../../../virt/kvm/kvm_main.c:3043 [inline] kvm_vm_ioctl+0x15b7/0x2460 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3603 vfs_ioctl fs/ioctl.c:48 [inline] ksys_ioctl+0x11a/0x180 fs/ioctl.c:753 __do_sys_ioctl fs/ioctl.c:762 [inline] __se_sys_ioctl fs/ioctl.c:760 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:760 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:353 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45ca29 Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f81f14b4c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00000000004e73c0 RCX: 000000000045ca29 RDX: 0000000000000000 RSI: 000000000000ae41 RDI: 0000000000000005 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000396 R14: 00000000004c62c6 R15: 00007f81f14b56d4 BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.5/8375 caller is rcu_nmi_enter+0x19/0x200 kernel/rcu/tree.c:823 CPU: 0 PID: 8375 Comm: syz-executor.5 Not tainted 5.7.0-rc7-next-20200525-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x18f/0x20d lib/dump_stack.c:118 check_preemption_disabled+0x20d/0x220 lib/smp_processor_id.c:48 rcu_nmi_enter+0x19/0x200 kernel/rcu/tree.c:823 kernel_text_address+0x99/0xe0 kernel/extable.c:143 __kernel_text_address+0x9/0x30 kernel/extable.c:105 unwind_get_return_address arch/x86/kernel/unwind_orc.c:317 [inline] unwind_get_return_address+0x5a/0xa0 arch/x86/kernel/unwind_orc.c:312 arch_stack_walk+0x97/0xf0 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:123 save_stack+0x1b/0x40 mm/kasan/common.c:48 set_track mm/kasan/common.c:56 [inline] __kasan_kmalloc mm/kasan/common.c:494 [inline] __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:467 slab_post_alloc_hook mm/slab.h:586 [inline] slab_alloc mm/slab.c:3320 [inline] kmem_cache_alloc_trace+0x13d/0x7d0 mm/slab.c:3549 kmalloc include/linux/slab.h:555 [inline] kzalloc include/linux/slab.h:669 [inline] kvm_uevent_notify_change.part.0+0x35d/0x450 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4543 kvm_uevent_notify_change arch/x86/kvm/../../../virt/kvm/kvm_main.c:4529 [inline] kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:794 [inline] kvm_put_kvm+0xe9/0xc40 arch/x86/kvm/../../../virt/kvm/kvm_main.c:837 kvm_vm_release+0x3f/0x50 arch/x86/kvm/../../../virt/kvm/kvm_main.c:860 __fput+0x33e/0x880 fs/file_table.c:281 task_work_run+0xe0/0x1a0 kernel/task_work.c:123 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0xb5e/0x2e00 kernel/exit.c:805 do_group_exit+0x125/0x340 kernel/exit.c:903 get_signal+0x47b/0x24f0 kernel/signal.c:2739 do_signal+0x81/0x2240 arch/x86/kernel/signal.c:810 exit_to_usermode_loop arch/x86/entry/common.c:206 [inline] __prepare_exit_to_usermode+0x175/0x220 arch/x86/entry/common.c:240 do_syscall_64+0x6c/0xe0 arch/x86/entry/common.c:362 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45ca29 Code: 48 8d 3d 12 57 23 01 e8 f5 22 00 00 eb 98 48 8d 3d 0c 57 23 01 e8 e7 22 00 00 e9 70 ff ff ff 48 8d 3d 1b 57 23 01 e8 d6 22 00 <00> e9 44 ff ff ff 48 8d 3d 02 57 23 01 e8 c5 22 00 00 e9 18 ff ff RSP: 002b:00007f81f14b4c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: 0000000000000006 RBX: 00000000004e73c0 RCX: 000000000045ca29 RDX: 0000000000000000 RSI: 000000000000ae41 RDI: 0000000000000005 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000396 R14: 00000000004c62c6 R15: 00007f81f14b56d4 BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.5/8375 caller is rcu_dynticks_curr_cpu_in_eqs kernel/rcu/tree.c:299 [inline] caller is rcu_nmi_enter+0x7b/0x200 kernel/rcu/tree.c:838 CPU: 1 PID: 8375 Comm: syz-executor.5 Not tainted 5.7.0-rc7-next-20200525-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x18f/0x20d lib/dump_stack.c:118 check_preemption_disabled+0x20d/0x220 lib/smp_processor_id.c:48 rcu_dynticks_curr_cpu_in_eqs kernel/rcu/tree.c:299 [inline] rcu_nmi_enter+0x7b/0x200 kernel/rcu/tree.c:838 kernel_text_address+0x99/0xe0 kernel/extable.c:143 __kernel_text_address+0x9/0x30 kernel/extable.c:105 unwind_get_return_address arch/x86/kernel/unwind_orc.c:317 [inline] unwind_get_return_address+0x5a/0xa0 arch/x86/kernel/unwind_orc.c:312 arch_stack_walk+0x97/0xf0 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:123 save_stack+0x1b/0x40 mm/kasan/common.c:48 set_track mm/kasan/common.c:56 [inline] __kasan_kmalloc mm/kasan/common.c:494 [inline] __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:467 slab_post_alloc_hook mm/slab.h:586 [inline] slab_alloc mm/slab.c:3320 [inline] kmem_cache_alloc_trace+0x13d/0x7d0 mm/slab.c:3549 kmalloc include/linux/slab.h:555 [inline] kzalloc include/linux/slab.h:669 [inline] kvm_uevent_notify_change.part.0+0x35d/0x450 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4543 kvm_uevent_notify_change arch/x86/kvm/../../../virt/kvm/kvm_main.c:4529 [inline] kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:794 [inline] kvm_put_kvm+0xe9/0xc40 arch/x86/kvm/../../../virt/kvm/kvm_main.c:837 kvm_vm_release+0x3f/0x50 arch/x86/kvm/../../../virt/kvm/kvm_main.c:860 __fput+0x33e/0x880 fs/file_table.c:281 task_work_run+0xe0/0x1a0 kernel/task_work.c:123 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0xb5e/0x2e00 kernel/exit.c:805 do_group_exit+0x125/0x340 kernel/exit.c:903 get_signal+0x47b/0x24f0 kernel/signal.c:2739 do_signal+0x81/0x2240 arch/x86/kernel/signal.c:810 exit_to_usermode_loop arch/x86/entry/common.c:206 [inline] __prepare_exit_to_usermode+0x175/0x220 arch/x86/entry/common.c:240 do_syscall_64+0x6c/0xe0 arch/x86/entry/common.c:362 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45ca29 Code: Bad RIP value. RSP: 002b:00007f81f14b4c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: 0000000000000006 RBX: 00000000004e73c0 RCX: 000000000045ca29 RDX: 0000000000000000 RSI: 000000000000ae41 RDI: 0000000000000005 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000396 R14: 00000000004c62c6 R15: 00007f81f14b56d4 BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.5/8375 caller is rcu_nmi_exit+0x19/0x2c0 kernel/rcu/tree.c:634 CPU: 1 PID: 8375 Comm: syz-executor.5 Not tainted 5.7.0-rc7-next-20200525-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x18f/0x20d lib/dump_stack.c:118 check_preemption_disabled+0x20d/0x220 lib/smp_processor_id.c:48 rcu_nmi_exit+0x19/0x2c0 kernel/rcu/tree.c:634 kernel_text_address+0xb3/0xe0 kernel/extable.c:156 __kernel_text_address+0x9/0x30 kernel/extable.c:105 unwind_get_return_address arch/x86/kernel/unwind_orc.c:317 [inline] unwind_get_return_address+0x5a/0xa0 arch/x86/kernel/unwind_orc.c:312 arch_stack_walk+0x97/0xf0 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:123 save_stack+0x1b/0x40 mm/kasan/common.c:48 set_track mm/kasan/common.c:56 [inline] __kasan_kmalloc mm/kasan/common.c:494 [inline] __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:467 slab_post_alloc_hook mm/slab.h:586 [inline] slab_alloc mm/slab.c:3320 [inline] kmem_cache_alloc_trace+0x13d/0x7d0 mm/slab.c:3549 kmalloc include/linux/slab.h:555 [inline] kzalloc include/linux/slab.h:669 [inline] kvm_uevent_notify_change.part.0+0x35d/0x450 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4543 kvm_uevent_notify_change arch/x86/kvm/../../../virt/kvm/kvm_main.c:4529 [inline] kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:794 [inline] kvm_put_kvm+0xe9/0xc40 arch/x86/kvm/../../../virt/kvm/kvm_main.c:837 kvm_vm_release+0x3f/0x50 arch/x86/kvm/../../../virt/kvm/kvm_main.c:860 __fput+0x33e/0x880 fs/file_table.c:281 task_work_run+0xe0/0x1a0 kernel/task_work.c:123 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0xb5e/0x2e00 kernel/exit.c:805 do_group_exit+0x125/0x340 kernel/exit.c:903 get_signal+0x47b/0x24f0 kernel/signal.c:2739 do_signal+0x81/0x2240 arch/x86/kernel/signal.c:810 exit_to_usermode_loop arch/x86/entry/common.c:206 [inline] __prepare_exit_to_usermode+0x175/0x220 arch/x86/entry/common.c:240 do_syscall_64+0x6c/0xe0 arch/x86/entry/common.c:362 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45ca29 Code: 48 8d 3d 12 57 23 01 e8 f5 22 00 00 eb 98 48 8d 3d 0c 57 23 01 e8 e7 22 00 00 e9 70 ff ff ff 48 8d 3d 1b 57 23 01 e8 d6 22 00 <00> e9 44 ff ff ff 48 8d 3d 02 57 23 01 e8 c5 22 00 00 e9 18 ff ff RSP: 002b:00007f81f14b4c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: 0000000000000006 RBX: 00000000004e73c0 RCX: 000000000045ca29 RDX: 0000000000000000 RSI: 000000000000ae41 RDI: 0000000000000005 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000396 R14: 00000000004c62c6 R15: 00007f81f14b56d4 BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.5/8375 caller is rcu_dynticks_curr_cpu_in_eqs kernel/rcu/tree.c:299 [inline] caller is rcu_nmi_exit+0x7b/0x2c0 kernel/rcu/tree.c:642 CPU: 1 PID: 8375 Comm: syz-executor.5 Not tainted 5.7.0-rc7-next-20200525-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x18f/0x20d lib/dump_stack.c:118 check_preemption_disabled+0x20d/0x220 lib/smp_processor_id.c:48 rcu_dynticks_curr_cpu_in_eqs kernel/rcu/tree.c:299 [inline] rcu_nmi_exit+0x7b/0x2c0 kernel/rcu/tree.c:642 kernel_text_address+0xb3/0xe0 kernel/extable.c:156 __kernel_text_address+0x9/0x30 kernel/extable.c:105 unwind_get_return_address arch/x86/kernel/unwind_orc.c:317 [inline] unwind_get_return_address+0x5a/0xa0 arch/x86/kernel/unwind_orc.c:312 arch_stack_walk+0x97/0xf0 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:123 save_stack+0x1b/0x40 mm/kasan/common.c:48 set_track mm/kasan/common.c:56 [inline] __kasan_kmalloc mm/kasan/common.c:494 [inline] __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:467 slab_post_alloc_hook mm/slab.h:586 [inline] slab_alloc mm/slab.c:3320 [inline] kmem_cache_alloc_trace+0x13d/0x7d0 mm/slab.c:3549 kmalloc include/linux/slab.h:555 [inline] kzalloc include/linux/slab.h:669 [inline] kvm_uevent_notify_change.part.0+0x35d/0x450 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4543 kvm_uevent_notify_change arch/x86/kvm/../../../virt/kvm/kvm_main.c:4529 [inline] kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:794 [inline] kvm_put_kvm+0xe9/0xc40 arch/x86/kvm/../../../virt/kvm/kvm_main.c:837 kvm_vm_release+0x3f/0x50 arch/x86/kvm/../../../virt/kvm/kvm_main.c:860 __fput+0x33e/0x880 fs/file_table.c:281 task_work_run+0xe0/0x1a0 kernel/task_work.c:123 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0xb5e/0x2e00 kernel/exit.c:805 do_group_exit+0x125/0x340 kernel/exit.c:903 get_signal+0x47b/0x24f0 kernel/signal.c:2739 do_signal+0x81/0x2240 arch/x86/kernel/signal.c:810 exit_to_usermode_loop arch/x86/entry/common.c:206 [inline] __prepare_exit_to_usermode+0x175/0x220 arch/x86/entry/common.c:240 do_syscall_64+0x6c/0xe0 arch/x86/entry/common.c:362 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45ca29 Code: 48 8d 3d 12 57 23 01 e8 f5 22 00 00 eb 98 48 8d 3d 0c 57 23 01 e8 e7 22 00 00 e9 70 ff ff ff 48 8d 3d 1b 57 23 01 e8 d6 22 00 <00> e9 44 ff ff ff 48 8d 3d 02 57 23 01 e8 c5 22 00 00 e9 18 ff ff RSP: 002b:00007f81f14b4c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: 0000000000000006 RBX: 00000000004e73c0 RCX: 000000000045ca29 RDX: 0000000000000000 RSI: 000000000000ae41 RDI: 0000000000000005 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000396 R14: 00000000004c62c6 R15: 00007f81f14b56d4