=============================
WARNING: suspicious RCU usage
5.7.0-rc7-next-20200528-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.0/10362.
stack backtrace:
CPU: 1 PID: 10362 Comm: syz-executor.0 Not tainted 5.7.0-rc7-next-20200528-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 1b d0 2a f9 b8 f2 ff ff ff 48 31 f6 e9 1f d0 2a f9 31 c0 e9 0c 33 2b f9 b8 fb ff ff ff e9 13 a9 31 f9 <b9> fb ff ff ff 31 c0 31 d2 e9 33 a9 31 f9 31 db e9 2a 0b 42 f9 31
RSP: 0018:ffffc90019077a30 EFLAGS: 00010212
RAX: 0000000000040000 RBX: ffff88805a7205c0 RCX: 0000000000000122
RDX: 000000000000d8f2 RSI: ffffc90019077a98 RDI: 0000000000000122
RBP: 0000000000000122 R08: ffff8880a6526040 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:6826
kvm_arch_vcpu_create+0x6a8/0xb30 arch/x86/kvm/x86.c:9431
kvm_vm_ioctl_create_vcpu arch/x86/kvm/../../../virt/kvm/kvm_main.c:3041 [inline]
kvm_vm_ioctl+0x15b7/0x2460 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3601
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:00007fb454637c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004e73c0 RCX: 000000000045ca29
RDX: 0000000000000000 RSI: 000000000000ae41 RDI: 0000000000000004
RBP: 000000000078bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000396 R14: 00000000004c62c6 R15: 00007fb4546386d4
=============================
WARNING: suspicious RCU usage
5.7.0-rc7-next-20200528-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.0/10362.
stack backtrace:
CPU: 1 PID: 10362 Comm: syz-executor.0 Not tainted 5.7.0-rc7-next-20200528-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 1b d0 2a f9 b8 f2 ff ff ff 48 31 f6 e9 1f d0 2a f9 31 c0 e9 0c 33 2b f9 b8 fb ff ff ff e9 13 a9 31 f9 <b9> fb ff ff ff 31 c0 31 d2 e9 33 a9 31 f9 31 db e9 2a 0b 42 f9 31
RSP: 0018:ffffc90019077a30 EFLAGS: 00010212
RAX: 0000000000040000 RBX: ffff88805a7205c0 RCX: 0000000000000122
RDX: 000000000000d8f2 RSI: ffffc90019077a98 RDI: 0000000000000122
RBP: 0000000000000122 R08: ffff8880a6526040 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:6826
kvm_arch_vcpu_create+0x6a8/0xb30 arch/x86/kvm/x86.c:9431
kvm_vm_ioctl_create_vcpu arch/x86/kvm/../../../virt/kvm/kvm_main.c:3041 [inline]
kvm_vm_ioctl+0x15b7/0x2460 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3601
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:00007fb454637c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004e73c0 RCX: 000000000045ca29
RDX: 0000000000000000 RSI: 000000000000ae41 RDI: 0000000000000004
RBP: 000000000078bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000396 R14: 00000000004c62c6 R15: 00007fb4546386d4
=============================
WARNING: suspicious RCU usage
5.7.0-rc7-next-20200528-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.0/10362.
stack backtrace:
CPU: 1 PID: 10362 Comm: syz-executor.0 Not tainted 5.7.0-rc7-next-20200528-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/0x1fa0 kernel/sched/core.c:4095
preempt_schedule_irq+0xb0/0x150 kernel/sched/core.c:4417
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 1b d0 2a f9 b8 f2 ff ff ff 48 31 f6 e9 1f d0 2a f9 31 c0 e9 0c 33 2b f9 b8 fb ff ff ff e9 13 a9 31 f9 <b9> fb ff ff ff 31 c0 31 d2 e9 33 a9 31 f9 31 db e9 2a 0b 42 f9 31
RSP: 0018:ffffc90019077a30 EFLAGS: 00010212
RAX: 0000000000040000 RBX: ffff88805a7205c0 RCX: 0000000000000122
RDX: 000000000000d8f2 RSI: ffffc90019077a98 RDI: 0000000000000122
RBP: 0000000000000122 R08: ffff8880a6526040 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:6826
kvm_arch_vcpu_create+0x6a8/0xb30 arch/x86/kvm/x86.c:9431
kvm_vm_ioctl_create_vcpu arch/x86/kvm/../../../virt/kvm/kvm_main.c:3041 [inline]
kvm_vm_ioctl+0x15b7/0x2460 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3601
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:00007fb454637c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004e73c0 RCX: 000000000045ca29
RDX: 0000000000000000 RSI: 000000000000ae41 RDI: 0000000000000004
RBP: 000000000078bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000396 R14: 00000000004c62c6 R15: 00007fb4546386d4
=============================
WARNING: suspicious RCU usage
5.7.0-rc7-next-20200528-syzkaller #0 Not tainted
-----------------------------
include/trace/events/sched.h:629 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.0/10362:
#0: ffff8880ae737d58 (&rq->lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1263 [inline]
#0: ffff8880ae737d58 (&rq->lock){-.-.}-{2:2}, at: __schedule+0x233/0x1fa0 kernel/sched/core.c:4105
stack backtrace:
CPU: 1 PID: 10362 Comm: syz-executor.0 Not tainted 5.7.0-rc7-next-20200528-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_pelt_se_tp include/trace/events/sched.h:629 [inline]
trace_pelt_se_tp include/trace/events/sched.h:629 [inline]
__update_load_avg_se+0x75a/0xc90 kernel/sched/pelt.c:321
update_load_avg+0x178/0x1c60 kernel/sched/fair.c:3786
set_next_entity+0x295/0x880 kernel/sched/fair.c:4387
pick_next_task_fair+0x66f/0xc70 kernel/sched/fair.c:7045
pick_next_task kernel/sched/core.c:4012 [inline]
__schedule+0x375/0x1fa0 kernel/sched/core.c:4127
preempt_schedule_irq+0xb0/0x150 kernel/sched/core.c:4417
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 1b d0 2a f9 b8 f2 ff ff ff 48 31 f6 e9 1f d0 2a f9 31 c0 e9 0c 33 2b f9 b8 fb ff ff ff e9 13 a9 31 f9 <b9> fb ff ff ff 31 c0 31 d2 e9 33 a9 31 f9 31 db e9 2a 0b 42 f9 31
RSP: 0018:ffffc90019077a30 EFLAGS: 00010212
RAX: 0000000000040000 RBX: ffff88805a7205c0 RCX: 0000000000000122
RDX: 000000000000d8f2 RSI: ffffc90019077a98 RDI: 0000000000000122
RBP: 0000000000000122 R08: ffff8880a6526040 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:6826
kvm_arch_vcpu_create+0x6a8/0xb30 arch/x86/kvm/x86.c:9431
kvm_vm_ioctl_create_vcpu arch/x86/kvm/../../../virt/kvm/kvm_main.c:3041 [inline]
kvm_vm_ioctl+0x15b7/0x2460 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3601
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:00007fb454637c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004e73c0 RCX: 000000000045ca29
RDX: 0000000000000000 RSI: 000000000000ae41 RDI: 0000000000000004
RBP: 000000000078bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000396 R14: 00000000004c62c6 R15: 00007fb4546386d4