Starting mcstransd: [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [ 29.367970] kauditd_printk_skb: 9 callbacks suppressed [ 29.367981] audit: type=1800 audit(1539772997.984:33): pid=5262 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 29.396591] audit: type=1800 audit(1539772997.994:34): pid=5262 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 43.128505] audit: type=1400 audit(1539773011.744:35): avc: denied { map } for pid=5441 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.43' (ECDSA) to the list of known hosts. executing program [ 63.899893] audit: type=1400 audit(1539773032.524:36): avc: denied { map } for pid=5453 comm="syz-executor887" path="/root/syz-executor887344199" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 63.903296] kasan: CONFIG_KASAN_INLINE enabled [ 63.931472] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 63.938867] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 63.945087] CPU: 1 PID: 5453 Comm: syz-executor887 Not tainted 4.19.0-rc8+ #65 [ 63.952423] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.961775] RIP: 0010:rb_erase+0x306/0x3710 [ 63.966081] Code: c7 81 28 01 00 00 f2 f2 f2 f2 c7 81 2c 01 00 00 00 f2 f2 f2 48 89 f9 65 48 8b 1c 25 28 00 00 00 48 89 5d d0 31 db 48 c1 e9 03 <42> 80 3c 01 00 0f 85 41 1c 00 00 4c 8d 48 10 4c 8b 78 08 48 b9 00 [ 63.985241] RSP: 0018:ffff8801c5b96918 EFLAGS: 00010202 [ 63.990587] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 63.997839] RDX: 1ffff10038b72d2b RSI: ffffffff8afbc860 RDI: 0000000000000008 [ 64.005098] RBP: ffff8801c5b97320 R08: dffffc0000000000 R09: fffffbfff12d6990 [ 64.012349] R10: fffffbfff12d6990 R11: ffffffff896b4c83 R12: ffff8801b0f1e3b0 [ 64.019598] R13: dffffc0000000000 R14: ffff8801c5b972f8 R15: ffff8801c5b97438 [ 64.026849] FS: 0000000002556880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 64.035052] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 64.040923] CR2: 00000000200002c0 CR3: 00000001c59d8000 CR4: 00000000001406e0 [ 64.048183] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 64.055471] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 64.062721] Call Trace: [ 64.065296] ? lockdep_on+0x50/0x50 [ 64.068977] ? rb_insert_color+0x1460/0x1460 [ 64.073383] ? lock_downgrade+0x900/0x900 [ 64.077522] ? noop_count+0x40/0x40 [ 64.081140] ? lock_pin_lock+0x350/0x350 [ 64.085187] ? rcu_bh_qs+0xc0/0xc0 [ 64.088712] ? unwind_dump+0x190/0x190 [ 64.092584] ? kasan_check_read+0x11/0x20 [ 64.096727] ? noop_count+0x40/0x40 [ 64.100348] ? lock_pin_lock+0x350/0x350 [ 64.104391] ? mark_held_locks+0x130/0x130 [ 64.108607] ? check_usage_forwards+0x3e0/0x3e0 [ 64.113259] ? __bfs+0x385/0x7a0 [ 64.116613] ? check_usage+0x1a9/0x790 [ 64.120489] ? lock_pin_lock+0x350/0x350 [ 64.124544] ? check_usage_forwards+0x3e0/0x3e0 [ 64.129203] ? __bfs+0x385/0x7a0 [ 64.132583] ? lockdep_on+0x50/0x50 [ 64.136215] ? lock_pin_lock+0x350/0x350 [ 64.140270] ? mark_held_locks+0x130/0x130 [ 64.144502] ? kasan_check_read+0x11/0x20 [ 64.148690] ? __lock_acquire+0x2881/0x4ec0 [ 64.153013] ? mark_held_locks+0x130/0x130 [ 64.157235] ? print_usage_bug+0xc0/0xc0 [ 64.161284] ? _raw_spin_unlock+0x2c/0x50 [ 64.165430] ? graph_lock+0x170/0x170 [ 64.169221] ? ext4_exit_mballoc+0xc0/0xc0 [ 64.173440] ? __lock_acquire+0x7ec/0x4ec0 [ 64.177662] ? find_held_lock+0x36/0x1c0 [ 64.181715] ? mark_held_locks+0x130/0x130 [ 64.185944] ? lock_downgrade+0x900/0x900 [ 64.190077] ? ext4_es_scan+0x960/0x960 [ 64.194033] ? lock_release+0x970/0x970 [ 64.198147] ? do_raw_write_trylock+0x1c0/0x1c0 [ 64.202803] ? kasan_check_write+0x14/0x20 [ 64.207040] ? lock_acquire+0x1ed/0x520 [ 64.211001] ? integrity_inode_free+0x77/0x320 [ 64.215565] ? ext4_es_remove_extent+0x151/0x500 [ 64.220302] ? lock_release+0x970/0x970 [ 64.224268] ? kasan_check_write+0x14/0x20 [ 64.228681] ? do_raw_write_lock+0xbd/0x1b0 [ 64.232992] integrity_inode_free+0x12f/0x320 [ 64.237472] security_inode_free+0x19/0x90 [ 64.241691] __destroy_inode+0x328/0x820 [ 64.245736] ? generic_update_time+0x450/0x450 [ 64.250304] ? evict+0x5d8/0x980 [ 64.253699] ? lock_downgrade+0x900/0x900 [ 64.257833] ? __inode_wait_for_writeback+0x2cf/0x380 [ 64.263017] destroy_inode+0xda/0x200 [ 64.266800] ? __destroy_inode+0x820/0x820 [ 64.271079] ? kasan_check_write+0x14/0x20 [ 64.275318] ? do_raw_spin_lock+0xc1/0x200 [ 64.280008] evict+0x5e0/0x980 [ 64.283198] ? destroy_inode+0x200/0x200 [ 64.287244] ? iput+0x671/0xa90 [ 64.290509] ? lock_downgrade+0x900/0x900 [ 64.294643] ? kasan_check_read+0x11/0x20 [ 64.298781] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 64.303409] ? lock_downgrade+0x900/0x900 [ 64.307558] iput+0x679/0xa90 [ 64.310675] ? inode_add_lru+0x2a0/0x2a0 [ 64.314730] ? up_write+0x7b/0x220 [ 64.318255] ? up_read+0x110/0x110 [ 64.321776] ? up_read+0x110/0x110 [ 64.325301] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 64.330837] ? check_preemption_disabled+0x48/0x200 [ 64.335951] ext4_ioctl+0x236f/0x4210 [ 64.339758] ? ext4_ioctl_group_add+0x560/0x560 [ 64.344414] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 64.350199] ? kasan_check_read+0x11/0x20 [ 64.354330] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 64.359595] ? rcu_bh_qs+0xc0/0xc0 [ 64.363123] ? unwind_dump+0x190/0x190 [ 64.367012] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 64.372536] ? avc_has_extended_perms+0xab2/0x15a0 [ 64.377585] ? convert_from_fxsr+0x4a7/0x7d0 [ 64.381978] ? avc_ss_reset+0x190/0x190 [ 64.385937] ? save_stack+0xa9/0xd0 [ 64.389551] ? save_stack+0x43/0xd0 [ 64.393165] ? __kasan_slab_free+0x102/0x150 [ 64.397574] ? kasan_slab_free+0xe/0x10 [ 64.401532] ? kmem_cache_free+0x83/0x290 [ 64.405671] ? putname+0xf2/0x130 [ 64.409108] ? do_sys_open+0x54d/0x700 [ 64.412974] ? __x64_sys_openat+0x9d/0x100 [ 64.417193] ? do_syscall_64+0x1b9/0x820 [ 64.421373] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 64.426726] ? ___might_sleep+0x1ed/0x300 [ 64.430858] ? arch_local_save_flags+0x40/0x40 [ 64.435525] ? kasan_check_write+0x14/0x20 [ 64.439749] ? trace_hardirqs_off+0xb8/0x310 [ 64.444164] ? ext4_ioctl_group_add+0x560/0x560 [ 64.448904] do_vfs_ioctl+0x1de/0x1720 [ 64.452910] ? ioctl_preallocate+0x300/0x300 [ 64.457467] ? selinux_file_mprotect+0x620/0x620 [ 64.462311] ? path_openat+0x3981/0x5160 [ 64.466358] ? rcu_read_lock_sched_held+0x108/0x120 [ 64.471440] ? kmem_cache_free+0x24f/0x290 [ 64.475678] ? putname+0xf7/0x130 [ 64.479195] ? do_syscall_64+0x9a/0x820 [ 64.483161] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 64.488696] ? security_file_ioctl+0x94/0xc0 [ 64.493090] ksys_ioctl+0xa9/0xd0 [ 64.496545] __x64_sys_ioctl+0x73/0xb0 [ 64.500418] do_syscall_64+0x1b9/0x820 [ 64.504288] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 64.509641] ? syscall_return_slowpath+0x5e0/0x5e0 [ 64.514552] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 64.519427] ? trace_hardirqs_on_caller+0x310/0x310 [ 64.524431] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 64.529504] ? prepare_exit_to_usermode+0x291/0x3b0 [ 64.534513] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 64.539341] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 64.544526] RIP: 0033:0x440019 [ 64.547714] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 64.566603] RSP: 002b:00007ffefbfb0d18 EFLAGS: 00000213 ORIG_RAX: 0000000000000010 [ 64.574301] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440019 [ 64.581558] RDX: 0000000000440019 RSI: 0000000000006611 RDI: 0000000000000003 [ 64.588821] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 64.596076] R10: 0000000000000000 R11: 0000000000000213 R12: 00000000004018a0 [ 64.603332] R13: 0000000000401930 R14: 0000000000000000 R15: 0000000000000000 [ 64.610591] Modules linked in: [ 64.613845] ---[ end trace 23b7a95802e84707 ]--- [ 64.618598] RIP: 0010:rb_erase+0x306/0x3710 [ 64.622940] Code: c7 81 28 01 00 00 f2 f2 f2 f2 c7 81 2c 01 00 00 00 f2 f2 f2 48 89 f9 65 48 8b 1c 25 28 00 00 00 48 89 5d d0 31 db 48 c1 e9 03 <42> 80 3c 01 00 0f 85 41 1c 00 00 4c 8d 48 10 4c 8b 78 08 48 b9 00 [ 64.641861] RSP: 0018:ffff8801c5b96918 EFLAGS: 00010202 [ 64.647209] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 64.654514] RDX: 1ffff10038b72d2b RSI: ffffffff8afbc860 RDI: 0000000000000008 [ 64.661789] RBP: ffff8801c5b97320 R08: dffffc0000000000 R09: fffffbfff12d6990 [ 64.669076] R10: fffffbfff12d6990 R11: ffffffff896b4c83 R12: ffff8801b0f1e3b0 [ 64.676330] R13: dffffc0000000000 R14: ffff8801c5b972f8 R15: ffff8801c5b97438 [ 64.683620] FS: 0000000002556880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 64.691840] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 64.697707] CR2: 00000000200002c0 CR3: 00000001c59d8000 CR4: 00000000001406e0 [ 64.705000] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 64.712269] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 64.719554] Kernel panic - not syncing: Fatal exception [ 64.726176] Kernel Offset: disabled [ 64.729810] Rebooting in 86400 seconds..