[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.198' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 94.526657][ T6739] L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 108.307153][ T8358] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 108.318908][ T8358] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 108.327323][ T8358] CPU: 0 PID: 8358 Comm: syz-executor858 Not tainted 5.14.0-rc5-next-20210813-syzkaller #0 [ 108.337307][ T8358] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 108.347362][ T8358] RIP: 0010:rcu_segcblist_enqueue+0xb9/0x130 [ 108.353361][ T8358] 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 [ 108.372978][ T8358] RSP: 0018:ffffc90002d1fbe0 EFLAGS: 00010046 [ 108.379051][ T8358] RAX: dffffc0000000000 RBX: ffff8880b9c00080 RCX: ffffffff815b8cb0 [ 108.387025][ T8358] RDX: 0000000000000000 RSI: ffffc90002d1fcc8 RDI: ffff8880b9c000a0 [ 108.394997][ T8358] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000003 [ 108.402970][ T8358] R10: fffff520005a3f6e R11: 0000000000000000 R12: ffffc90002d1fcc8 [ 108.410942][ T8358] R13: ffff8880b9c00080 R14: 0000000000000000 R15: ffff8880b9c00040 [ 108.418917][ T8358] FS: 00007f6a0b6c7700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 108.427853][ T8358] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 108.434440][ T8358] CR2: 00000000004d2700 CR3: 0000000073719000 CR4: 00000000001526f0 [ 108.442413][ T8358] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 108.450387][ T8358] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 108.458359][ T8358] Call Trace: [ 108.461632][ T8358] ? srcu_gp_start_if_needed+0x102/0xbc0 [ 108.467280][ T8358] srcu_gp_start_if_needed+0x116/0xbc0 [ 108.472751][ T8358] ? lockdep_init_map_type+0x2c3/0x7b0 [ 108.478224][ T8358] __synchronize_srcu+0x21f/0x290 [ 108.483255][ T8358] ? call_srcu+0xc0/0xc0 [ 108.487501][ T8358] ? lock_downgrade+0x6e0/0x6e0 [ 108.492359][ T8358] ? rcu_tasks_pregp_step+0x10/0x10 [ 108.497578][ T8358] ? trace_hardirqs_on+0x5b/0x1c0 [ 108.502617][ T8358] kvm_mmu_uninit_vm+0x18/0x30 [ 108.507397][ T8358] kvm_arch_destroy_vm+0x4e7/0x680 [ 108.512523][ T8358] kvm_dev_ioctl+0xfe6/0x1a40 [ 108.517217][ T8358] ? kvm_put_kvm+0xe00/0xe00 [ 108.521818][ T8358] ? __fget_files+0x23d/0x3e0 [ 108.526502][ T8358] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 108.532751][ T8358] ? kvm_put_kvm+0xe00/0xe00 [ 108.537353][ T8358] __x64_sys_ioctl+0x193/0x200 [ 108.542123][ T8358] do_syscall_64+0x35/0xb0 [ 108.546548][ T8358] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 108.552450][ T8358] RIP: 0033:0x446a69 [ 108.556343][ T8358] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 15 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 b8 ff ff ff f7 d8 64 89 01 48 [ 108.575955][ T8358] RSP: 002b:00007f6a0b6c7278 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 108.584371][ T8358] RAX: ffffffffffffffda RBX: 00000000004cb4d0 RCX: 0000000000446a69 [ 108.592342][ T8358] RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000003 [ 108.600313][ T8358] RBP: 00000000004cb4dc R08: 0000000000000000 R09: 0000000000000000 executing program executing program [ 108.608282][ T8358] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000049b2a8 [ 108.616252][ T8358] R13: 00007f6a0b6c7280 R14: 6d766b2f7665642f R15: 00000000004cb4d8 [ 108.624321][ T8358] Modules linked in: [ 108.628222][ T8358] ---[ end trace 87a789ef23d34c4d ]--- [ 108.633674][ T8358] RIP: 0010:rcu_segcblist_enqueue+0xb9/0x130 [ 108.639672][ T8358] 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 [ 108.659283][ T8358] RSP: 0018:ffffc90002d1fbe0 EFLAGS: 00010046 [ 108.665360][ T8358] RAX: dffffc0000000000 RBX: ffff8880b9c00080 RCX: ffffffff815b8cb0 [ 108.673334][ T8358] RDX: 0000000000000000 RSI: ffffc90002d1fcc8 RDI: ffff8880b9c000a0 [ 108.681304][ T8358] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000003 [ 108.689282][ T8358] R10: fffff520005a3f6e R11: 0000000000000000 R12: ffffc90002d1fcc8 [ 108.697255][ T8358] R13: ffff8880b9c00080 R14: 0000000000000000 R15: ffff8880b9c00040 [ 108.705230][ T8358] FS: 00007f6a0b6c7700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 108.714166][ T8358] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 108.720759][ T8358] CR2: 00000000004d2700 CR3: 0000000073719000 CR4: 00000000001526f0 [ 108.728736][ T8358] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 108.736706][ T8358] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 108.744678][ T8358] Kernel panic - not syncing: Fatal exception [ 108.751926][ T8358] Kernel Offset: disabled [ 108.756239][ T8358] Rebooting in 86400 seconds..