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[ 30.750758] audit: type=1800 audit(1539788007.861:33): pid=5338 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 maintaining daemon: restorecond[ 30.774622] audit: type=1800 audit(1539788007.861:34): pid=5338 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 [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 35.640435] audit: type=1400 audit(1539788012.751:35): avc: denied { map } for pid=5516 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 '10.128.0.81' (ECDSA) to the list of known hosts. executing program [ 42.305898] audit: type=1400 audit(1539788019.421:36): avc: denied { map } for pid=5530 comm="syz-executor037" path="/root/syz-executor037783000" 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 [ 42.310878] kasan: CONFIG_KASAN_INLINE enabled [ 42.336946] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 42.344395] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 42.350631] CPU: 0 PID: 5530 Comm: syz-executor037 Not tainted 4.19.0-rc8+ #66 [ 42.357971] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.367336] RIP: 0010:rb_erase+0x306/0x3710 [ 42.371654] 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 [ 42.390704] RSP: 0018:ffff8801b3df6918 EFLAGS: 00010202 [ 42.396059] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 42.403321] RDX: 1ffff100367bed2b RSI: ffffffff8afbc860 RDI: 0000000000000008 [ 42.410588] RBP: ffff8801b3df7320 R08: dffffc0000000000 R09: fffffbfff12d6990 [ 42.417843] R10: fffffbfff12d6990 R11: ffffffff896b4c83 R12: ffff8801b12db3b0 [ 42.425115] R13: dffffc0000000000 R14: ffff8801b3df72f8 R15: ffff8801b3df7438 [ 42.432371] FS: 000000000133f880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 42.440592] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.446459] CR2: 0000000020000080 CR3: 00000001c58fe000 CR4: 00000000001406f0 [ 42.453715] Call Trace: [ 42.456294] ? lockdep_on+0x50/0x50 [ 42.459907] ? rb_insert_color+0x1460/0x1460 [ 42.464301] ? noop_count+0x40/0x40 [ 42.467915] ? lock_pin_lock+0x350/0x350 [ 42.471959] ? mark_held_locks+0x130/0x130 [ 42.476184] ? kasan_check_read+0x11/0x20 [ 42.480318] ? noop_count+0x40/0x40 [ 42.483931] ? lock_pin_lock+0x350/0x350 [ 42.487998] ? mark_held_locks+0x130/0x130 [ 42.492236] ? check_usage_forwards+0x3e0/0x3e0 [ 42.496899] ? __bfs+0x385/0x7a0 [ 42.500260] ? noop_count+0x40/0x40 [ 42.503872] ? check_usage+0x1a9/0x790 [ 42.507759] ? lock_pin_lock+0x350/0x350 [ 42.511826] ? check_usage_forwards+0x3e0/0x3e0 [ 42.516482] ? __bfs+0x385/0x7a0 [ 42.519851] ? modules_open+0xa0/0xa0 [ 42.523635] ? lockdep_on+0x50/0x50 [ 42.527260] ? lock_pin_lock+0x350/0x350 [ 42.531310] ? mark_held_locks+0x130/0x130 [ 42.535532] ? kasan_check_read+0x11/0x20 [ 42.539664] ? __lock_acquire+0x2881/0x4ec0 [ 42.544000] ? mark_held_locks+0x130/0x130 [ 42.548228] ? print_usage_bug+0xc0/0xc0 [ 42.552276] ? _raw_spin_unlock+0x2c/0x50 [ 42.556414] ? graph_lock+0x170/0x170 [ 42.560208] ? ext4_exit_mballoc+0xc0/0xc0 [ 42.564446] ? __lock_acquire+0x7ec/0x4ec0 [ 42.568667] ? find_held_lock+0x36/0x1c0 [ 42.572731] ? mark_held_locks+0x130/0x130 [ 42.576951] ? lock_downgrade+0x900/0x900 [ 42.581091] ? ext4_es_scan+0x960/0x960 [ 42.585066] ? do_raw_write_trylock+0x1c0/0x1c0 [ 42.589725] ? kasan_check_write+0x14/0x20 [ 42.593946] ? lock_acquire+0x1ed/0x520 [ 42.597905] ? integrity_inode_free+0x77/0x320 [ 42.602479] ? ext4_es_remove_extent+0x151/0x500 [ 42.607220] ? lock_release+0x970/0x970 [ 42.611183] ? kasan_check_write+0x14/0x20 [ 42.615421] ? do_raw_write_lock+0xbd/0x1b0 [ 42.619760] integrity_inode_free+0x12f/0x320 [ 42.624248] security_inode_free+0x19/0x90 [ 42.628469] __destroy_inode+0x328/0x820 [ 42.632515] ? generic_update_time+0x450/0x450 [ 42.637106] ? evict+0x5d8/0x980 [ 42.640458] ? lock_downgrade+0x900/0x900 [ 42.644594] ? __inode_wait_for_writeback+0x2cf/0x380 [ 42.649768] destroy_inode+0xda/0x200 [ 42.653553] ? __destroy_inode+0x820/0x820 [ 42.657776] ? kasan_check_write+0x14/0x20 [ 42.662011] ? do_raw_spin_lock+0xc1/0x200 [ 42.666234] evict+0x5e0/0x980 [ 42.669412] ? destroy_inode+0x200/0x200 [ 42.673457] ? iput+0x671/0xa90 [ 42.676723] ? lock_downgrade+0x900/0x900 [ 42.680858] ? kasan_check_read+0x11/0x20 [ 42.684997] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 42.689589] ? lock_downgrade+0x900/0x900 [ 42.693729] iput+0x679/0xa90 [ 42.696820] ? inode_add_lru+0x2a0/0x2a0 [ 42.700879] ? up_write+0x7b/0x220 [ 42.704406] ? up_read+0x110/0x110 [ 42.707935] ? up_read+0x110/0x110 [ 42.711461] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.716984] ? check_preemption_disabled+0x48/0x200 [ 42.721998] ext4_ioctl+0x236f/0x4210 [ 42.725786] ? ext4_ioctl_group_add+0x560/0x560 [ 42.730442] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 42.736222] ? kasan_check_read+0x11/0x20 [ 42.740355] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 42.745618] ? rcu_bh_qs+0xc0/0xc0 [ 42.749160] ? unwind_dump+0x190/0x190 [ 42.753039] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.758575] ? avc_has_extended_perms+0xab2/0x15a0 [ 42.763499] ? convert_from_fxsr+0x4a7/0x7d0 [ 42.767900] ? avc_ss_reset+0x190/0x190 [ 42.771865] ? save_stack+0xa9/0xd0 [ 42.775495] ? save_stack+0x43/0xd0 [ 42.779109] ? __kasan_slab_free+0x102/0x150 [ 42.783501] ? kasan_slab_free+0xe/0x10 [ 42.787478] ? kmem_cache_free+0x83/0x290 [ 42.791611] ? putname+0xf2/0x130 [ 42.795067] ? do_sys_open+0x54d/0x700 [ 42.798940] ? __x64_sys_openat+0x9d/0x100 [ 42.803162] ? do_syscall_64+0x1b9/0x820 [ 42.807213] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 42.812576] ? ___might_sleep+0x1ed/0x300 [ 42.816750] ? arch_local_save_flags+0x40/0x40 [ 42.821329] ? kasan_check_write+0x14/0x20 [ 42.825554] ? trace_hardirqs_off+0xb8/0x310 [ 42.829952] ? ext4_ioctl_group_add+0x560/0x560 [ 42.834612] do_vfs_ioctl+0x1de/0x1720 [ 42.838491] ? ioctl_preallocate+0x300/0x300 [ 42.842887] ? selinux_file_mprotect+0x620/0x620 [ 42.847629] ? path_openat+0x3981/0x5160 [ 42.851691] ? rcu_read_lock_sched_held+0x108/0x120 [ 42.856695] ? kmem_cache_free+0x24f/0x290 [ 42.860913] ? putname+0xf7/0x130 [ 42.864361] ? do_syscall_64+0x9a/0x820 [ 42.868325] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.873848] ? security_file_ioctl+0x94/0xc0 [ 42.878241] ksys_ioctl+0xa9/0xd0 [ 42.881694] __x64_sys_ioctl+0x73/0xb0 [ 42.885570] do_syscall_64+0x1b9/0x820 [ 42.889448] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 42.894796] ? syscall_return_slowpath+0x5e0/0x5e0 [ 42.899724] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.904553] ? trace_hardirqs_on_caller+0x310/0x310 [ 42.909573] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 42.914577] ? prepare_exit_to_usermode+0x291/0x3b0 [ 42.919582] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.924412] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 42.929588] RIP: 0033:0x440009 [ 42.932768] 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 [ 42.951655] RSP: 002b:00007fff2c9f2398 EFLAGS: 00000213 ORIG_RAX: 0000000000000010 [ 42.959346] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440009 [ 42.966602] RDX: 0000000000440009 RSI: 0000000000006611 RDI: 0000000000000003 [ 42.973854] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 42.981107] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401890 [ 42.988360] R13: 0000000000401920 R14: 0000000000000000 R15: 0000000000000000 [ 42.995633] Modules linked in: [ 42.999299] ---[ end trace e39ff2da81835926 ]--- [ 43.004106] RIP: 0010:rb_erase+0x306/0x3710 [ 43.008415] 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 [ 43.027505] RSP: 0018:ffff8801b3df6918 EFLAGS: 00010202 [ 43.032890] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 43.040143] RDX: 1ffff100367bed2b RSI: ffffffff8afbc860 RDI: 0000000000000008 [ 43.047426] RBP: ffff8801b3df7320 R08: dffffc0000000000 R09: fffffbfff12d6990 [ 43.054724] R10: fffffbfff12d6990 R11: ffffffff896b4c83 R12: ffff8801b12db3b0 [ 43.061979] R13: dffffc0000000000 R14: ffff8801b3df72f8 R15: ffff8801b3df7438 [ 43.069270] FS: 000000000133f880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 43.077514] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.083412] CR2: 0000000020000080 CR3: 00000001c58fe000 CR4: 00000000001406f0 [ 43.090689] Kernel panic - not syncing: Fatal exception [ 43.096882] Kernel Offset: disabled [ 43.100509] Rebooting in 86400 seconds..