Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [ 29.753489] audit: type=1800 audit(1540421821.839:33): pid=5329 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 [ 29.781785] audit: type=1800 audit(1540421821.839:34): pid=5329 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: [ 42.416252] audit: type=1400 audit(1540421834.499:35): avc: denied { map } for pid=5507 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 '10.128.0.16' (ECDSA) to the list of known hosts. executing program [ 49.188519] audit: type=1400 audit(1540421841.269:36): avc: denied { map } for pid=5519 comm="syz-executor770" path="/root/syz-executor770387198" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 49.193635] kasan: CONFIG_KASAN_INLINE enabled [ 49.219794] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 49.227304] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 49.233526] CPU: 0 PID: 5519 Comm: syz-executor770 Not tainted 4.19.0+ #80 [ 49.240515] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.249863] RIP: 0010:rb_erase+0x306/0x3710 [ 49.254171] 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 [ 49.273061] RSP: 0018:ffff8801c5236918 EFLAGS: 00010202 [ 49.278405] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 49.285656] RDX: 1ffff10038a46d2b RSI: ffffffff8af92020 RDI: 0000000000000008 [ 49.292908] RBP: ffff8801c5237320 R08: dffffc0000000000 R09: ffffed0038a46e53 [ 49.300169] R10: ffffed0038a46e53 R11: 0000000000000003 R12: ffff8801b2f613b0 [ 49.307438] R13: dffffc0000000000 R14: ffff8801c52372f8 R15: ffff8801c5237438 [ 49.314709] FS: 0000000001a41880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 49.322919] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 49.328796] CR2: 0000000020000080 CR3: 00000001c8b7b000 CR4: 00000000001406f0 [ 49.336065] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 49.343343] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 49.350594] Call Trace: [ 49.353191] ? rb_insert_color+0x1460/0x1460 [ 49.357591] ? noop_count+0x40/0x40 [ 49.361209] ? print_bfs_bug+0x80/0x80 [ 49.365078] ? mark_held_locks+0x130/0x130 [ 49.369295] ? noop_count+0x40/0x40 [ 49.372906] ? print_bfs_bug+0x80/0x80 [ 49.376775] ? noop_count+0x40/0x40 [ 49.380401] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 49.385922] ? check_usage_forwards+0x3d0/0x3d0 [ 49.390572] ? __bfs+0x321/0x780 [ 49.393923] ? check_usage+0x1aa/0x790 [ 49.397814] ? print_bfs_bug+0x80/0x80 [ 49.401688] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 49.406601] ? check_usage_forwards+0x3d0/0x3d0 [ 49.411260] ? kasan_check_read+0x11/0x20 [ 49.415394] ? graph_lock+0x9c/0x270 [ 49.419092] ? __bfs+0x321/0x780 [ 49.422441] ? trace_event_raw_event_lock_acquire+0x440/0x440 [ 49.428308] ? lockdep_on+0x50/0x50 [ 49.431915] ? print_bfs_bug+0x80/0x80 [ 49.435794] ? kasan_check_read+0x11/0x20 [ 49.439925] ? graph_lock+0x9c/0x270 [ 49.443635] ? trace_event_raw_event_lock_acquire+0x440/0x440 [ 49.449498] ? mark_held_locks+0x130/0x130 [ 49.453717] ? kasan_check_read+0x11/0x20 [ 49.457844] ? __lock_acquire+0x2aff/0x4c20 [ 49.462155] ? mark_held_locks+0x130/0x130 [ 49.466370] ? print_usage_bug+0xc0/0xc0 [ 49.470413] ? print_usage_bug+0xc0/0xc0 [ 49.474481] ? __lock_acquire+0x62f/0x4c20 [ 49.478704] ? zap_class+0x640/0x640 [ 49.482403] ? print_usage_bug+0xc0/0xc0 [ 49.486446] ? __lock_acquire+0x62f/0x4c20 [ 49.490667] ? mark_held_locks+0x130/0x130 [ 49.494894] ? lock_downgrade+0x900/0x900 [ 49.499027] ? ext4_es_scan+0x960/0x960 [ 49.502988] ? kasan_check_read+0x11/0x20 [ 49.507119] ? do_raw_write_lock+0x14f/0x310 [ 49.511513] ? do_raw_write_trylock+0x270/0x270 [ 49.516167] ? lock_acquire+0x1ed/0x520 [ 49.520125] ? integrity_inode_free+0x77/0x320 [ 49.524690] ? ext4_es_remove_extent+0x151/0x500 [ 49.529434] ? kasan_check_read+0x11/0x20 [ 49.533568] ? do_raw_write_lock+0x14f/0x310 [ 49.537960] ? do_raw_read_unlock+0x70/0x70 [ 49.542265] ? zap_class+0x640/0x640 [ 49.545988] integrity_inode_free+0x12f/0x320 [ 49.550477] security_inode_free+0x19/0x90 [ 49.554710] __destroy_inode+0x328/0x820 [ 49.558752] ? clear_nlink+0xe0/0xe0 [ 49.562450] ? evict+0x5d8/0x980 [ 49.565804] ? lock_downgrade+0x900/0x900 [ 49.569940] ? __inode_wait_for_writeback+0x2cf/0x380 [ 49.575132] destroy_inode+0xda/0x200 [ 49.578917] ? __destroy_inode+0x820/0x820 [ 49.583137] evict+0x5e0/0x980 [ 49.586314] ? destroy_inode+0x200/0x200 [ 49.590360] ? iput+0x671/0xa90 [ 49.593621] ? lock_downgrade+0x900/0x900 [ 49.597770] ? kasan_check_read+0x11/0x20 [ 49.601904] ? do_raw_spin_trylock+0x270/0x270 [ 49.606469] ? lock_downgrade+0x900/0x900 [ 49.610635] iput+0x679/0xa90 [ 49.613727] ? inode_add_lru+0x2a0/0x2a0 [ 49.617776] ? up_write+0x7b/0x220 [ 49.621300] ? down_write_nested+0x130/0x130 [ 49.626129] ? down_write_nested+0x130/0x130 [ 49.630520] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 49.636058] ? check_preemption_disabled+0x48/0x280 [ 49.641063] ext4_ioctl+0x236f/0x4210 [ 49.644851] ? ext4_ioctl_group_add+0x560/0x560 [ 49.649507] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 49.654420] ? kasan_check_read+0x11/0x20 [ 49.658553] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 49.663813] ? rcu_softirq_qs+0x20/0x20 [ 49.667770] ? unwind_dump+0x190/0x190 [ 49.671646] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 49.677167] ? avc_has_extended_perms+0xab2/0x15a0 [ 49.682092] ? getreg32+0x6f7/0xc40 [ 49.685715] ? avc_ss_reset+0x190/0x190 [ 49.689714] ? save_stack+0xa9/0xd0 [ 49.693327] ? save_stack+0x43/0xd0 [ 49.696954] ? __kasan_slab_free+0x102/0x150 [ 49.701347] ? kasan_slab_free+0xe/0x10 [ 49.705304] ? kmem_cache_free+0x83/0x290 [ 49.709431] ? putname+0xf2/0x130 [ 49.712868] ? do_sys_open+0x54d/0x700 [ 49.716737] ? __x64_sys_openat+0x9d/0x100 [ 49.720955] ? do_syscall_64+0x1b9/0x820 [ 49.725003] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 49.730360] ? perf_trace_sched_process_exec+0x860/0x860 [ 49.735796] ? trace_hardirqs_off+0xb8/0x310 [ 49.740189] ? ext4_ioctl_group_add+0x560/0x560 [ 49.744863] do_vfs_ioctl+0x1de/0x1720 [ 49.748739] ? ioctl_preallocate+0x300/0x300 [ 49.753134] ? selinux_file_mprotect+0x620/0x620 [ 49.757888] ? getname_flags+0x4c1/0x5a0 [ 49.761934] ? rcu_read_lock_sched_held+0x14f/0x180 [ 49.766931] ? kmem_cache_free+0x24f/0x290 [ 49.771152] ? putname+0xf7/0x130 [ 49.774590] ? do_syscall_64+0x9a/0x820 [ 49.778548] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 49.784074] ? security_file_ioctl+0x94/0xc0 [ 49.788468] ksys_ioctl+0xa9/0xd0 [ 49.791912] __x64_sys_ioctl+0x73/0xb0 [ 49.795785] do_syscall_64+0x1b9/0x820 [ 49.799657] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 49.805010] ? syscall_return_slowpath+0x5e0/0x5e0 [ 49.809926] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 49.814761] ? trace_hardirqs_on_caller+0x310/0x310 [ 49.819764] ? prepare_exit_to_usermode+0x291/0x3b0 [ 49.824767] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 49.829612] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 49.834791] RIP: 0033:0x440009 [ 49.837968] 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 [ 49.856859] RSP: 002b:00007ffca68b8bf8 EFLAGS: 00000213 ORIG_RAX: 0000000000000010 [ 49.864560] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440009 [ 49.871814] RDX: 0000000000440009 RSI: 0000000000006611 RDI: 0000000000000003 [ 49.879066] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 49.886324] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401890 [ 49.893575] R13: 0000000000401920 R14: 0000000000000000 R15: 0000000000000000 [ 49.900833] Modules linked in: [ 49.904097] ---[ end trace e5b4ddbd22130236 ]--- [ 49.908861] RIP: 0010:rb_erase+0x306/0x3710 [ 49.913220] 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 [ 49.932147] RSP: 0018:ffff8801c5236918 EFLAGS: 00010202 [ 49.937500] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 49.944798] RDX: 1ffff10038a46d2b RSI: ffffffff8af92020 RDI: 0000000000000008 [ 49.952082] RBP: ffff8801c5237320 R08: dffffc0000000000 R09: ffffed0038a46e53 [ 49.959338] R10: ffffed0038a46e53 R11: 0000000000000003 R12: ffff8801b2f613b0 [ 49.966645] R13: dffffc0000000000 R14: ffff8801c52372f8 R15: ffff8801c5237438 [ 49.973937] FS: 0000000001a41880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 49.982219] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 49.988104] CR2: 0000000020000080 CR3: 00000001c8b7b000 CR4: 00000000001406f0 [ 49.995409] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 50.002697] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 50.009993] Kernel panic - not syncing: Fatal exception [ 50.016260] Kernel Offset: disabled [ 50.019882] Rebooting in 86400 seconds..