[[0;32m OK [0m] Reached target Graphical Interface.
Starting Update UTMP about System Runlevel Changes...
[[0;32m OK [0m] Started Update UTMP about System Runlevel Changes.
Starting Load/Save RF Kill Switch Status...
[[0;32m OK [0m] Started Load/Save RF Kill Switch Status.
Debian GNU/Linux 9 syzkaller ttyS0
Warning: Permanently added '10.128.0.223' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [ 36.213267] audit: type=1400 audit(1588918182.964:8): avc: denied { execmem } for pid=6363 comm="syz-executor269" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
[ 36.215522] kasan: CONFIG_KASAN_INLINE enabled
[ 36.239239] kasan: GPF could be caused by NULL-ptr deref or user memory access
[ 36.248325] general protection fault: 0000 [#1] PREEMPT SMP KASAN
[ 36.255073] Modules linked in:
[ 36.258432] CPU: 0 PID: 6363 Comm: syz-executor269 Not tainted 4.14.179-syzkaller #0
[ 36.266638] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 36.276402] task: ffff888099014380 task.stack: ffff88809b688000
[ 36.283873] RIP: 0010:rb_erase+0x29/0x19b0
[ 36.288239] RSP: 0018:ffff88809b68fa68 EFLAGS: 00010292
[ 36.293733] RAX: dffffc0000000000 RBX: ffff8880825563f0 RCX: 1ffff110136d1f26
[ 36.301687] RDX: 0000000000000001 RSI: ffffffff8a65dde0 RDI: 0000000000000008
[ 36.309844] RBP: 0000000000000000 R08: ffffffff8a0f9bcc R09: 0000000000001e26
[ 36.317249] R10: ffff88809b68f870 R11: ffff888099014380 R12: ffff888082557430
[ 36.324693] R13: 0000000000000000 R14: ffff8880825574b8 R15: ffffffff8a65dde0
[ 36.332472] FS: 0000000001683880(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
[ 36.341516] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 36.348109] CR2: 0000000020000040 CR3: 00000000a3a08000 CR4: 00000000001406f0
[ 36.355568] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 36.363603] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 36.371303] Call Trace:
[ 36.373982] integrity_inode_free+0x119/0x300
[ 36.378630] security_inode_free+0x14/0x80
[ 36.382930] __destroy_inode+0x1e8/0x4c0
[ 36.387231] destroy_inode+0x49/0x110
[ 36.391028] iput+0x457/0x8d0
[ 36.394324] ? ext4_nfs_commit_metadata+0x2d0/0x2d0
[ 36.400014] ext4_ioctl+0x1471/0x3a00
[ 36.404626] ? avc_ss_reset+0x100/0x100
[ 36.408721] ? ext4_ioctl_check_immutable+0x1c0/0x1c0
[ 36.414383] ? do_sys_open+0x1f9/0x3f0
[ 36.418260] ? do_syscall_64+0x1d5/0x640
[ 36.422683] ? entry_SYSCALL_64_after_hwframe+0x42/0xb7
[ 36.428583] ? find_held_lock+0x2d/0x110
[ 36.432934] ? debug_check_no_obj_freed+0x28e/0x6e4
[ 36.438372] ? lock_acquire+0x170/0x3f0
[ 36.442612] ? lock_downgrade+0x6e0/0x6e0
[ 36.447388] ? ext4_ioctl_check_immutable+0x1c0/0x1c0
[ 36.456464] do_vfs_ioctl+0x75a/0xfe0
[ 36.460632] ? selinux_file_mprotect+0x5c0/0x5c0
[ 36.466928] ? ioctl_preallocate+0x1a0/0x1a0
[ 36.472007] ? rcu_read_lock_sched_held+0x10a/0x130
[ 36.480895] ? kmem_cache_free+0x23a/0x2b0
[ 36.488843] ? putname+0xcd/0x110
[ 36.493215] ? security_file_ioctl+0x76/0xb0
[ 36.498970] ? security_file_ioctl+0x83/0xb0
[ 36.505294] SyS_ioctl+0x7f/0xb0
[ 36.509277] ? do_vfs_ioctl+0xfe0/0xfe0
[ 36.513723] do_syscall_64+0x1d5/0x640
[ 36.518329] entry_SYSCALL_64_after_hwframe+0x42/0xb7
[ 36.524294] RIP: 0033:0x4401b9
[ 36.528300] RSP: 002b:00007ffcb5837c28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 36.537812] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401b9
[ 36.546137] RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000003
[ 36.553746] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8
[ 36.561498] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a40
[ 36.572632] R13: 0000000000401ad0 R14: 0000000000000000 R15: 0000000000000000
[ 36.580052] Code: 00 00 48 b8 00 00 00 00 00 fc ff df 41 57 49 89 f7 41 56 41 55 49 89 fd 48 83 c7 08 48 89 fa 41 54 48 c1 ea 03 55 53 48 83 ec 18 <80> 3c 02 00 0f 85 f5 10 00 00 49 8d 7d 10 4d 8b 75 08 48 b8 00
[ 36.599453] RIP: rb_erase+0x29/0x19b0 RSP: ffff88809b68fa68
[ 36.606439] ---[ end trace f045796b4111206f ]---
[ 36.611913] Kernel panic - not syncing: Fatal exception
[ 36.619380] Kernel Offset: disabled
[ 36.623634] Rebooting in 86400 seconds..