BUG: spinlock bad magic on CPU#1, syz-executor.0/18950 lock: 0xffff88802cb00040, .magic: 00000000, .owner: /-1, .owner_cpu: 0 CPU: 1 PID: 18950 Comm: syz-executor.0 Not tainted 5.14.0-rc4-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:105 debug_spin_lock_before kernel/locking/spinlock_debug.c:83 [inline] do_raw_spin_lock+0x216/0x2b0 kernel/locking/spinlock_debug.c:112 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:117 [inline] _raw_spin_lock_irqsave+0x41/0x50 kernel/locking/spinlock.c:159 srcu_might_be_idle kernel/rcu/srcutree.c:767 [inline] synchronize_srcu+0x4f/0x1c0 kernel/rcu/srcutree.c:1008 kvm_mmu_uninit_vm+0x18/0x30 arch/x86/kvm/mmu/mmu.c:5557 kvm_arch_destroy_vm+0x4e7/0x680 arch/x86/kvm/x86.c:11268 kvm_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:1046 [inline] kvm_dev_ioctl_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:4472 [inline] kvm_dev_ioctl+0x1231/0x1770 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4527 __do_compat_sys_ioctl+0x1c7/0x290 fs/ioctl.c:1167 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7ff2549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f55ec5fc EFLAGS: 00000296 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000000ae01 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 PID: 18950 Comm: syz-executor.0 Not tainted 5.14.0-rc4-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:rcu_segcblist_enqueue+0xb9/0x130 kernel/rcu/rcu_segcblist.c:348 Code: 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 4e 48 b8 00 00 00 00 00 fc ff df 48 8b 6b 20 48 89 ea 48 c1 ea 03 <80> 3c 02 00 75 21 48 89 75 00 48 89 73 20 48 83 c4 08 5b 5d c3 48 RSP: 0018:ffffc900293d7bc8 EFLAGS: 00010046 RAX: dffffc0000000000 RBX: ffff88802ca00080 RCX: ffffffff815b8790 RDX: 0000000000000000 RSI: ffffc900293d7cb0 RDI: ffff88802ca000a0 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000003 R10: fffff5200527af6b R11: 0000000000000000 R12: ffffc900293d7cb0 R13: ffff88802ca00080 R14: 0000000000000000 R15: ffff88802ca00040 FS: 0000000000000000(0000) GS:ffff88802ca00000(0063) knlGS:00000000f55ecb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000000985f404 CR3: 00000000208a5000 CR4: 0000000000152ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: srcu_gp_start_if_needed+0x116/0xbc0 kernel/rcu/srcutree.c:823 __call_srcu kernel/rcu/srcutree.c:883 [inline] __synchronize_srcu+0x21f/0x290 kernel/rcu/srcutree.c:929 kvm_mmu_uninit_vm+0x18/0x30 arch/x86/kvm/mmu/mmu.c:5557 kvm_arch_destroy_vm+0x4e7/0x680 arch/x86/kvm/x86.c:11268 kvm_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:1046 [inline] kvm_dev_ioctl_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:4472 [inline] kvm_dev_ioctl+0x1231/0x1770 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4527 __do_compat_sys_ioctl+0x1c7/0x290 fs/ioctl.c:1167 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7ff2549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f55ec5fc EFLAGS: 00000296 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000000ae01 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 773e3ecc87f369d2 ]--- RIP: 0010:rcu_segcblist_enqueue+0xb9/0x130 kernel/rcu/rcu_segcblist.c:348 Code: 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 4e 48 b8 00 00 00 00 00 fc ff df 48 8b 6b 20 48 89 ea 48 c1 ea 03 <80> 3c 02 00 75 21 48 89 75 00 48 89 73 20 48 83 c4 08 5b 5d c3 48 RSP: 0018:ffffc900293d7bc8 EFLAGS: 00010046 RAX: dffffc0000000000 RBX: ffff88802ca00080 RCX: ffffffff815b8790 RDX: 0000000000000000 RSI: ffffc900293d7cb0 RDI: ffff88802ca000a0 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000003 R10: fffff5200527af6b R11: 0000000000000000 R12: ffffc900293d7cb0 R13: ffff88802ca00080 R14: 0000000000000000 R15: ffff88802ca00040 FS: 0000000000000000(0000) GS:ffff88802ca00000(0063) knlGS:00000000f55ecb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000000985f404 CR3: 00000000208a5000 CR4: 0000000000152ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400