Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 29.271723] kauditd_printk_skb: 9 callbacks suppressed [ 29.271735] audit: type=1800 audit(1540094228.716:33): pid=5319 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 [ 29.300017] audit: type=1800 audit(1540094228.716:34): pid=5319 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: [ 32.485249] audit: type=1400 audit(1540094231.926:35): avc: denied { map } for pid=5492 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 '10.128.0.74' (ECDSA) to the list of known hosts. executing program [ 39.198302] audit: type=1400 audit(1540094238.636:36): avc: denied { map } for pid=5506 comm="syz-executor813" path="/root/syz-executor813166827" 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 [ 39.203279] kasan: CONFIG_KASAN_INLINE enabled [ 39.229313] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 39.236727] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 39.242952] CPU: 0 PID: 5506 Comm: syz-executor813 Not tainted 4.19.0-rc8+ #73 [ 39.250288] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.259639] RIP: 0010:rb_erase+0x306/0x3710 [ 39.263944] 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 [ 39.282827] RSP: 0018:ffff8801c4646918 EFLAGS: 00010202 [ 39.288175] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 39.295445] RDX: 1ffff100388c8d2b RSI: ffffffff8afbc860 RDI: 0000000000000008 [ 39.302700] RBP: ffff8801c4647320 R08: dffffc0000000000 R09: fffffbfff12d6990 [ 39.309950] R10: fffffbfff12d6990 R11: ffffffff896b4c83 R12: ffff8801b230e370 [ 39.317198] R13: dffffc0000000000 R14: ffff8801c46472f8 R15: ffff8801c4647438 [ 39.324454] FS: 00000000012a7880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 39.332661] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.338519] CR2: 0000000020000080 CR3: 00000001c218a000 CR4: 00000000001406f0 [ 39.345769] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.353022] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.360274] Call Trace: [ 39.362857] ? lockdep_on+0x50/0x50 [ 39.366491] ? rb_insert_color+0x1460/0x1460 [ 39.370887] ? noop_count+0x40/0x40 [ 39.374498] ? lock_pin_lock+0x350/0x350 [ 39.378555] ? mark_held_locks+0x130/0x130 [ 39.382777] ? kasan_check_read+0x11/0x20 [ 39.386907] ? noop_count+0x40/0x40 [ 39.390518] ? lock_pin_lock+0x350/0x350 [ 39.394558] ? mark_held_locks+0x130/0x130 [ 39.398775] ? check_usage_forwards+0x3e0/0x3e0 [ 39.403423] ? __bfs+0x385/0x7a0 [ 39.406777] ? noop_count+0x40/0x40 [ 39.410386] ? check_usage+0x1a9/0x790 [ 39.414268] ? lock_pin_lock+0x350/0x350 [ 39.418313] ? check_usage_forwards+0x3e0/0x3e0 [ 39.422980] ? __bfs+0x385/0x7a0 [ 39.426332] ? modules_open+0xa0/0xa0 [ 39.430113] ? lockdep_on+0x50/0x50 [ 39.433724] ? lock_pin_lock+0x350/0x350 [ 39.437775] ? mark_held_locks+0x130/0x130 [ 39.442011] ? kasan_check_read+0x11/0x20 [ 39.446143] ? __lock_acquire+0x2881/0x4ec0 [ 39.450458] ? mark_held_locks+0x130/0x130 [ 39.454678] ? print_usage_bug+0xc0/0xc0 [ 39.458722] ? _raw_spin_unlock+0x2c/0x50 [ 39.462859] ? graph_lock+0x170/0x170 [ 39.466644] ? ext4_exit_mballoc+0xc0/0xc0 [ 39.470870] ? __lock_acquire+0x7ec/0x4ec0 [ 39.475093] ? find_held_lock+0x36/0x1c0 [ 39.479144] ? mark_held_locks+0x130/0x130 [ 39.483368] ? lock_downgrade+0x900/0x900 [ 39.487503] ? ext4_es_scan+0x960/0x960 [ 39.491469] ? lock_release+0x970/0x970 [ 39.495432] ? do_raw_write_trylock+0x1c0/0x1c0 [ 39.500093] ? kasan_check_write+0x14/0x20 [ 39.504326] ? lock_acquire+0x1ed/0x520 [ 39.508287] ? integrity_inode_free+0x77/0x320 [ 39.512853] ? ext4_es_remove_extent+0x151/0x500 [ 39.517594] ? lock_release+0x970/0x970 [ 39.521566] ? kasan_check_write+0x14/0x20 [ 39.525787] ? do_raw_write_lock+0xbd/0x1e0 [ 39.530093] integrity_inode_free+0x12f/0x320 [ 39.534576] security_inode_free+0x19/0x90 [ 39.538795] __destroy_inode+0x328/0x820 [ 39.542842] ? generic_update_time+0x450/0x450 [ 39.547405] ? evict+0x5d8/0x980 [ 39.550757] ? lock_downgrade+0x900/0x900 [ 39.554907] ? __inode_wait_for_writeback+0x2cf/0x380 [ 39.560090] destroy_inode+0xda/0x200 [ 39.563903] ? __destroy_inode+0x820/0x820 [ 39.568139] ? kasan_check_write+0x14/0x20 [ 39.572369] ? do_raw_spin_lock+0xc1/0x230 [ 39.576602] evict+0x5e0/0x980 [ 39.579792] ? destroy_inode+0x200/0x200 [ 39.583849] ? iput+0x671/0xa90 [ 39.587122] ? lock_downgrade+0x900/0x900 [ 39.591268] ? kasan_check_read+0x11/0x20 [ 39.595412] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 39.600005] ? lock_downgrade+0x900/0x900 [ 39.604148] iput+0x679/0xa90 [ 39.607265] ? inode_add_lru+0x2a0/0x2a0 [ 39.611332] ? up_write+0x7b/0x220 [ 39.614854] ? up_read+0x110/0x110 [ 39.618373] ? up_read+0x110/0x110 [ 39.621905] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.627427] ? check_preemption_disabled+0x48/0x280 [ 39.632437] ext4_ioctl+0x236f/0x4210 [ 39.636511] ? ext4_ioctl_group_add+0x560/0x560 [ 39.641167] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 39.646951] ? kasan_check_read+0x11/0x20 [ 39.651085] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 39.656346] ? rcu_bh_qs+0xc0/0xc0 [ 39.659870] ? unwind_dump+0x190/0x190 [ 39.663746] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.669264] ? avc_has_extended_perms+0xab2/0x15a0 [ 39.674179] ? convert_from_fxsr+0x157/0x7d0 [ 39.678570] ? avc_ss_reset+0x190/0x190 [ 39.682545] ? save_stack+0xa9/0xd0 [ 39.686187] ? save_stack+0x43/0xd0 [ 39.689797] ? __kasan_slab_free+0x102/0x150 [ 39.694187] ? kasan_slab_free+0xe/0x10 [ 39.698145] ? kmem_cache_free+0x83/0x290 [ 39.702272] ? putname+0xf2/0x130 [ 39.705708] ? do_sys_open+0x54d/0x700 [ 39.709576] ? __x64_sys_openat+0x9d/0x100 [ 39.713794] ? do_syscall_64+0x1b9/0x820 [ 39.717849] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 39.723204] ? ___might_sleep+0x1ed/0x300 [ 39.727339] ? arch_local_save_flags+0x40/0x40 [ 39.731905] ? kasan_check_write+0x14/0x20 [ 39.736145] ? trace_hardirqs_off+0xb8/0x310 [ 39.740545] ? ext4_ioctl_group_add+0x560/0x560 [ 39.745199] do_vfs_ioctl+0x1de/0x1720 [ 39.749073] ? ioctl_preallocate+0x300/0x300 [ 39.753476] ? selinux_file_mprotect+0x620/0x620 [ 39.758222] ? path_openat+0x3a31/0x5160 [ 39.762271] ? rcu_read_lock_sched_held+0x108/0x120 [ 39.767275] ? kmem_cache_free+0x24f/0x290 [ 39.771498] ? putname+0xf7/0x130 [ 39.774939] ? do_syscall_64+0x9a/0x820 [ 39.778900] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.784428] ? security_file_ioctl+0x94/0xc0 [ 39.788835] ksys_ioctl+0xa9/0xd0 [ 39.792277] __x64_sys_ioctl+0x73/0xb0 [ 39.796149] do_syscall_64+0x1b9/0x820 [ 39.800039] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 39.805391] ? syscall_return_slowpath+0x5e0/0x5e0 [ 39.810311] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.815142] ? trace_hardirqs_on_caller+0x310/0x310 [ 39.820146] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 39.825153] ? prepare_exit_to_usermode+0x291/0x3b0 [ 39.830167] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.835005] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 39.840195] RIP: 0033:0x440009 [ 39.843384] 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 [ 39.862274] RSP: 002b:00007ffc3f1b5b78 EFLAGS: 00000213 ORIG_RAX: 0000000000000010 [ 39.869971] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440009 [ 39.877233] RDX: 0000000000440009 RSI: 0000000000006611 RDI: 0000000000000003 [ 39.884493] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 39.891768] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401890 [ 39.899045] R13: 0000000000401920 R14: 0000000000000000 R15: 0000000000000000 [ 39.906305] Modules linked in: [ 39.909823] ---[ end trace ed4cd2b0ba93277f ]--- [ 39.914618] RIP: 0010:rb_erase+0x306/0x3710 [ 39.918926] 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 [ 39.937892] RSP: 0018:ffff8801c4646918 EFLAGS: 00010202 [ 39.943285] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 39.950591] RDX: 1ffff100388c8d2b RSI: ffffffff8afbc860 RDI: 0000000000000008 [ 39.957860] RBP: ffff8801c4647320 R08: dffffc0000000000 R09: fffffbfff12d6990 [ 39.965145] R10: fffffbfff12d6990 R11: ffffffff896b4c83 R12: ffff8801b230e370 [ 39.972429] R13: dffffc0000000000 R14: ffff8801c46472f8 R15: ffff8801c4647438 [ 39.979704] FS: 00000000012a7880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 39.987942] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.993835] CR2: 0000000020000080 CR3: 00000001c218a000 CR4: 00000000001406f0 [ 40.001137] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.008404] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.015698] Kernel panic - not syncing: Fatal exception [ 40.021889] Kernel Offset: disabled [ 40.025515] Rebooting in 86400 seconds..