Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 29.631386] audit: type=1800 audit(1540394046.489:33): pid=5309 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 [ 29.652457] audit: type=1800 audit(1540394046.499:34): pid=5309 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: [ 31.648055] audit: type=1400 audit(1540394048.509:35): avc: denied { map } for pid=5485 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 '10.128.0.62' (ECDSA) to the list of known hosts. executing program [ 38.350232] audit: type=1400 audit(1540394055.209:36): avc: denied { map } for pid=5499 comm="syz-executor212" path="/root/syz-executor212036283" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 38.355700] kasan: CONFIG_KASAN_INLINE enabled [ 38.381403] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 38.388919] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 38.395168] CPU: 1 PID: 5499 Comm: syz-executor212 Not tainted 4.19.0+ #80 [ 38.402163] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.411541] RIP: 0010:rb_erase+0x306/0x3710 [ 38.415853] 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 [ 38.434764] RSP: 0018:ffff8801b3366918 EFLAGS: 00010202 [ 38.440113] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 38.447365] RDX: 1ffff1003666cd2b RSI: ffffffff8af92020 RDI: 0000000000000008 [ 38.454616] RBP: ffff8801b3367320 R08: dffffc0000000000 R09: ffffed003666ce53 [ 38.461876] R10: ffffed003666ce53 R11: 0000000000000003 R12: ffff8801b2ad13b0 [ 38.469141] R13: dffffc0000000000 R14: ffff8801b33672f8 R15: ffff8801b3367438 [ 38.476398] FS: 00000000011f8880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 38.484626] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 38.490501] CR2: 0000000020000080 CR3: 00000001c0257000 CR4: 00000000001406e0 [ 38.497758] Call Trace: [ 38.500342] ? rb_insert_color+0x1460/0x1460 [ 38.504736] ? noop_count+0x40/0x40 [ 38.508349] ? print_bfs_bug+0x80/0x80 [ 38.512224] ? mark_held_locks+0x130/0x130 [ 38.516448] ? noop_count+0x40/0x40 [ 38.520059] ? print_bfs_bug+0x80/0x80 [ 38.523930] ? noop_count+0x40/0x40 [ 38.527548] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 38.533071] ? check_usage_forwards+0x3d0/0x3d0 [ 38.537726] ? __bfs+0x321/0x780 [ 38.541079] ? check_usage+0x1aa/0x790 [ 38.544953] ? print_bfs_bug+0x80/0x80 [ 38.548833] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 38.553750] ? check_usage_forwards+0x3d0/0x3d0 [ 38.558426] ? kasan_check_read+0x11/0x20 [ 38.562562] ? graph_lock+0x9c/0x270 [ 38.566260] ? __bfs+0x321/0x780 [ 38.569608] ? trace_event_raw_event_lock_acquire+0x440/0x440 [ 38.575478] ? lockdep_on+0x50/0x50 [ 38.579088] ? print_bfs_bug+0x80/0x80 [ 38.582962] ? kasan_check_read+0x11/0x20 [ 38.587094] ? graph_lock+0x9c/0x270 [ 38.590789] ? trace_event_raw_event_lock_acquire+0x440/0x440 [ 38.596659] ? mark_held_locks+0x130/0x130 [ 38.600897] ? kasan_check_read+0x11/0x20 [ 38.605046] ? __lock_acquire+0x2aff/0x4c20 [ 38.609353] ? mark_held_locks+0x130/0x130 [ 38.613586] ? print_usage_bug+0xc0/0xc0 [ 38.617633] ? print_usage_bug+0xc0/0xc0 [ 38.621694] ? __lock_acquire+0x62f/0x4c20 [ 38.625921] ? zap_class+0x640/0x640 [ 38.629616] ? print_usage_bug+0xc0/0xc0 [ 38.633688] ? __lock_acquire+0x62f/0x4c20 [ 38.637910] ? mark_held_locks+0x130/0x130 [ 38.642127] ? lock_downgrade+0x900/0x900 [ 38.646275] ? ext4_es_scan+0x960/0x960 [ 38.650234] ? kasan_check_read+0x11/0x20 [ 38.654382] ? do_raw_write_lock+0x14f/0x310 [ 38.658777] ? do_raw_write_trylock+0x270/0x270 [ 38.663448] ? lock_acquire+0x1ed/0x520 [ 38.667409] ? integrity_inode_free+0x77/0x320 [ 38.671979] ? ext4_es_remove_extent+0x151/0x500 [ 38.676720] ? kasan_check_read+0x11/0x20 [ 38.680852] ? do_raw_write_lock+0x14f/0x310 [ 38.685242] ? do_raw_read_unlock+0x70/0x70 [ 38.689547] ? zap_class+0x640/0x640 [ 38.693254] integrity_inode_free+0x12f/0x320 [ 38.697738] security_inode_free+0x19/0x90 [ 38.701959] __destroy_inode+0x328/0x820 [ 38.706009] ? clear_nlink+0xe0/0xe0 [ 38.709709] ? evict+0x5d8/0x980 [ 38.713063] ? lock_downgrade+0x900/0x900 [ 38.717192] ? __inode_wait_for_writeback+0x2cf/0x380 [ 38.722388] destroy_inode+0xda/0x200 [ 38.726180] ? __destroy_inode+0x820/0x820 [ 38.730401] evict+0x5e0/0x980 [ 38.733579] ? destroy_inode+0x200/0x200 [ 38.737622] ? iput+0x671/0xa90 [ 38.740907] ? lock_downgrade+0x900/0x900 [ 38.745045] ? kasan_check_read+0x11/0x20 [ 38.749185] ? do_raw_spin_trylock+0x270/0x270 [ 38.753753] ? lock_downgrade+0x900/0x900 [ 38.757892] iput+0x679/0xa90 [ 38.761034] ? inode_add_lru+0x2a0/0x2a0 [ 38.765092] ? up_write+0x7b/0x220 [ 38.768635] ? down_write_nested+0x130/0x130 [ 38.773038] ? down_write_nested+0x130/0x130 [ 38.777438] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 38.782964] ? check_preemption_disabled+0x48/0x280 [ 38.787970] ext4_ioctl+0x236f/0x4210 [ 38.791759] ? ext4_ioctl_group_add+0x560/0x560 [ 38.796431] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 38.801350] ? kasan_check_read+0x11/0x20 [ 38.805488] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 38.810758] ? rcu_softirq_qs+0x20/0x20 [ 38.814735] ? unwind_dump+0x190/0x190 [ 38.818611] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 38.824154] ? avc_has_extended_perms+0xab2/0x15a0 [ 38.829079] ? getreg32+0x6f7/0xc40 [ 38.832693] ? avc_ss_reset+0x190/0x190 [ 38.836665] ? save_stack+0xa9/0xd0 [ 38.840298] ? save_stack+0x43/0xd0 [ 38.843910] ? __kasan_slab_free+0x102/0x150 [ 38.848302] ? kasan_slab_free+0xe/0x10 [ 38.852273] ? kmem_cache_free+0x83/0x290 [ 38.856445] ? putname+0xf2/0x130 [ 38.859885] ? do_sys_open+0x54d/0x700 [ 38.863759] ? __x64_sys_openat+0x9d/0x100 [ 38.867975] ? do_syscall_64+0x1b9/0x820 [ 38.872023] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 38.877384] ? perf_trace_sched_process_exec+0x860/0x860 [ 38.882851] ? trace_hardirqs_off+0xb8/0x310 [ 38.887260] ? ext4_ioctl_group_add+0x560/0x560 [ 38.891931] do_vfs_ioctl+0x1de/0x1720 [ 38.895818] ? ioctl_preallocate+0x300/0x300 [ 38.900213] ? selinux_file_mprotect+0x620/0x620 [ 38.904957] ? getname_flags+0x4c1/0x5a0 [ 38.909001] ? rcu_read_lock_sched_held+0x14f/0x180 [ 38.914005] ? kmem_cache_free+0x24f/0x290 [ 38.918229] ? putname+0xf7/0x130 [ 38.921673] ? do_syscall_64+0x9a/0x820 [ 38.925640] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 38.931171] ? security_file_ioctl+0x94/0xc0 [ 38.935578] ksys_ioctl+0xa9/0xd0 [ 38.939027] __x64_sys_ioctl+0x73/0xb0 [ 38.942903] do_syscall_64+0x1b9/0x820 [ 38.946781] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 38.952156] ? syscall_return_slowpath+0x5e0/0x5e0 [ 38.957080] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 38.961915] ? trace_hardirqs_on_caller+0x310/0x310 [ 38.966918] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 38.971922] ? prepare_exit_to_usermode+0x291/0x3b0 [ 38.976922] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 38.981753] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 38.986938] RIP: 0033:0x440009 [ 38.990116] 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 [ 39.009009] RSP: 002b:00007ffe02eb6bc8 EFLAGS: 00000213 ORIG_RAX: 0000000000000010 [ 39.016714] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440009 [ 39.023979] RDX: 0000000000440009 RSI: 0000000000006611 RDI: 0000000000000003 [ 39.031255] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 39.038511] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401890 [ 39.045769] R13: 0000000000401920 R14: 0000000000000000 R15: 0000000000000000 [ 39.053030] Modules linked in: [ 39.056261] ---[ end trace 4794e31d923abc7f ]--- [ 39.061024] RIP: 0010:rb_erase+0x306/0x3710 [ 39.065368] 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 [ 39.084308] RSP: 0018:ffff8801b3366918 EFLAGS: 00010202 [ 39.089661] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 39.096954] RDX: 1ffff1003666cd2b RSI: ffffffff8af92020 RDI: 0000000000000008 [ 39.104240] RBP: ffff8801b3367320 R08: dffffc0000000000 R09: ffffed003666ce53 [ 39.111517] R10: ffffed003666ce53 R11: 0000000000000003 R12: ffff8801b2ad13b0 [ 39.118836] R13: dffffc0000000000 R14: ffff8801b33672f8 R15: ffff8801b3367438 [ 39.126130] FS: 00000000011f8880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 39.134389] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.140272] CR2: 0000000020000080 CR3: 00000001c0257000 CR4: 00000000001406e0 [ 39.147588] Kernel panic - not syncing: Fatal exception [ 39.153788] Kernel Offset: disabled [ 39.157409] Rebooting in 86400 seconds..