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. [ 30.086049] audit: type=1800 audit(1540315956.263:33): pid=5325 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 [ 30.107983] audit: type=1800 audit(1540315956.263:34): pid=5325 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: [ 34.232264] audit: type=1400 audit(1540315960.403:35): avc: denied { map } for pid=5502 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 '10.128.10.16' (ECDSA) to the list of known hosts. executing program [ 41.002754] audit: type=1400 audit(1540315967.173:36): avc: denied { map } for pid=5516 comm="syz-executor546" path="/root/syz-executor546071319" 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 [ 41.007194] kasan: CONFIG_KASAN_INLINE enabled [ 41.033740] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 41.041144] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 41.047367] CPU: 0 PID: 5516 Comm: syz-executor546 Not tainted 4.19.0+ #78 [ 41.054355] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.063703] RIP: 0010:rb_erase+0x306/0x3710 [ 41.068007] 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 [ 41.086890] RSP: 0018:ffff8801d83a6918 EFLAGS: 00010202 [ 41.092234] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 41.099485] RDX: 1ffff1003b074d2b RSI: ffffffff8afbf860 RDI: 0000000000000008 [ 41.106735] RBP: ffff8801d83a7320 R08: dffffc0000000000 R09: fffffbfff12d69a0 [ 41.113987] R10: fffffbfff12d69a0 R11: ffffffff896b4d03 R12: ffff8801b1334370 [ 41.121236] R13: dffffc0000000000 R14: ffff8801d83a72f8 R15: ffff8801d83a7438 [ 41.128493] FS: 0000000001dfa880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 41.136699] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.142592] CR2: 0000000020000080 CR3: 00000001c4c4a000 CR4: 00000000001406f0 [ 41.149847] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 41.157100] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 41.164349] Call Trace: [ 41.166923] ? lockdep_on+0x50/0x50 [ 41.170533] ? rb_insert_color+0x1460/0x1460 [ 41.174922] ? noop_count+0x40/0x40 [ 41.178527] ? lock_pin_lock+0x350/0x350 [ 41.182565] ? mark_held_locks+0x130/0x130 [ 41.186786] ? kasan_check_read+0x11/0x20 [ 41.190918] ? noop_count+0x40/0x40 [ 41.194526] ? lock_pin_lock+0x350/0x350 [ 41.198570] ? mark_held_locks+0x130/0x130 [ 41.202790] ? check_usage_forwards+0x3e0/0x3e0 [ 41.207440] ? __bfs+0x385/0x7a0 [ 41.210786] ? noop_count+0x40/0x40 [ 41.214436] ? check_usage+0x1a9/0x790 [ 41.218307] ? lock_pin_lock+0x350/0x350 [ 41.222393] ? check_usage_forwards+0x3e0/0x3e0 [ 41.227046] ? __bfs+0x385/0x7a0 [ 41.230393] ? modules_open+0xa0/0xa0 [ 41.234174] ? lockdep_on+0x50/0x50 [ 41.237785] ? lock_pin_lock+0x350/0x350 [ 41.241878] ? mark_held_locks+0x130/0x130 [ 41.246115] ? kasan_check_read+0x11/0x20 [ 41.250249] ? __lock_acquire+0x2881/0x4ec0 [ 41.254560] ? mark_held_locks+0x130/0x130 [ 41.258779] ? print_usage_bug+0xc0/0xc0 [ 41.262823] ? _raw_spin_unlock+0x2c/0x50 [ 41.266955] ? graph_lock+0x170/0x170 [ 41.270737] ? ext4_exit_mballoc+0xc0/0xc0 [ 41.274955] ? __lock_acquire+0x7ec/0x4ec0 [ 41.279174] ? find_held_lock+0x36/0x1c0 [ 41.283220] ? mark_held_locks+0x130/0x130 [ 41.287455] ? lock_downgrade+0x900/0x900 [ 41.291605] ? ext4_es_scan+0x960/0x960 [ 41.295562] ? lock_release+0x970/0x970 [ 41.299522] ? do_raw_write_trylock+0x1c0/0x1c0 [ 41.304175] ? kasan_check_write+0x14/0x20 [ 41.308396] ? lock_acquire+0x1ed/0x520 [ 41.312351] ? integrity_inode_free+0x77/0x320 [ 41.316917] ? ext4_es_remove_extent+0x151/0x500 [ 41.321661] ? lock_release+0x970/0x970 [ 41.325627] ? kasan_check_write+0x14/0x20 [ 41.329848] ? do_raw_write_lock+0xbd/0x1e0 [ 41.334152] integrity_inode_free+0x12f/0x320 [ 41.338630] security_inode_free+0x19/0x90 [ 41.342855] __destroy_inode+0x328/0x820 [ 41.346900] ? generic_update_time+0x450/0x450 [ 41.351463] ? evict+0x5d8/0x980 [ 41.354810] ? lock_downgrade+0x900/0x900 [ 41.358942] ? __inode_wait_for_writeback+0x2cf/0x380 [ 41.364112] destroy_inode+0xda/0x200 [ 41.367895] ? __destroy_inode+0x820/0x820 [ 41.372115] ? kasan_check_write+0x14/0x20 [ 41.376330] ? do_raw_spin_lock+0xc1/0x230 [ 41.380543] evict+0x5e0/0x980 [ 41.383716] ? destroy_inode+0x200/0x200 [ 41.387761] ? iput+0x671/0xa90 [ 41.391023] ? lock_downgrade+0x900/0x900 [ 41.395166] ? kasan_check_read+0x11/0x20 [ 41.399300] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 41.403864] ? lock_downgrade+0x900/0x900 [ 41.407998] iput+0x679/0xa90 [ 41.411088] ? inode_add_lru+0x2a0/0x2a0 [ 41.415148] ? up_write+0x7b/0x220 [ 41.418677] ? up_read+0x110/0x110 [ 41.422206] ? up_read+0x110/0x110 [ 41.425732] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 41.431249] ? check_preemption_disabled+0x48/0x280 [ 41.436251] ext4_ioctl+0x236f/0x4210 [ 41.440034] ? ext4_ioctl_group_add+0x560/0x560 [ 41.444715] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 41.450506] ? kasan_check_read+0x11/0x20 [ 41.454636] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 41.459902] ? rcu_bh_qs+0xc0/0xc0 [ 41.463427] ? unwind_dump+0x190/0x190 [ 41.467299] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 41.472816] ? avc_has_extended_perms+0xab2/0x15a0 [ 41.477733] ? convert_from_fxsr+0x157/0x7d0 [ 41.482126] ? avc_ss_reset+0x190/0x190 [ 41.486085] ? save_stack+0xa9/0xd0 [ 41.489695] ? save_stack+0x43/0xd0 [ 41.493299] ? __kasan_slab_free+0x102/0x150 [ 41.497713] ? kasan_slab_free+0xe/0x10 [ 41.501673] ? kmem_cache_free+0x83/0x290 [ 41.505806] ? putname+0xf2/0x130 [ 41.509248] ? do_sys_open+0x54d/0x700 [ 41.513116] ? __x64_sys_openat+0x9d/0x100 [ 41.517333] ? do_syscall_64+0x1b9/0x820 [ 41.521375] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 41.526726] ? ___might_sleep+0x1ed/0x300 [ 41.530857] ? arch_local_save_flags+0x40/0x40 [ 41.535423] ? kasan_check_write+0x14/0x20 [ 41.539643] ? trace_hardirqs_off+0xb8/0x310 [ 41.544043] ? ext4_ioctl_group_add+0x560/0x560 [ 41.548699] do_vfs_ioctl+0x1de/0x1720 [ 41.552571] ? ioctl_preallocate+0x300/0x300 [ 41.556963] ? selinux_file_mprotect+0x620/0x620 [ 41.561701] ? path_openat+0x1aa1/0x5160 [ 41.565747] ? rcu_read_lock_sched_held+0x108/0x120 [ 41.570748] ? kmem_cache_free+0x24f/0x290 [ 41.574963] ? putname+0xf7/0x130 [ 41.578397] ? do_syscall_64+0x9a/0x820 [ 41.582357] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 41.587882] ? security_file_ioctl+0x94/0xc0 [ 41.592276] ksys_ioctl+0xa9/0xd0 [ 41.595715] __x64_sys_ioctl+0x73/0xb0 [ 41.599586] do_syscall_64+0x1b9/0x820 [ 41.603459] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 41.608815] ? syscall_return_slowpath+0x5e0/0x5e0 [ 41.613730] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 41.618557] ? trace_hardirqs_on_caller+0x310/0x310 [ 41.623557] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 41.628559] ? prepare_exit_to_usermode+0x291/0x3b0 [ 41.633560] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 41.638395] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 41.643567] RIP: 0033:0x440009 [ 41.646745] 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 [ 41.665642] RSP: 002b:00007ffc4eff14e8 EFLAGS: 00000213 ORIG_RAX: 0000000000000010 [ 41.673357] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440009 [ 41.680611] RDX: 0000000000440009 RSI: 0000000000006611 RDI: 0000000000000003 [ 41.687864] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 41.695115] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401890 [ 41.702365] R13: 0000000000401920 R14: 0000000000000000 R15: 0000000000000000 [ 41.709617] Modules linked in: [ 41.713004] ---[ end trace f50ac095e70a382d ]--- [ 41.717790] RIP: 0010:rb_erase+0x306/0x3710 [ 41.722097] 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 [ 41.741464] RSP: 0018:ffff8801d83a6918 EFLAGS: 00010202 [ 41.746842] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 41.754094] RDX: 1ffff1003b074d2b RSI: ffffffff8afbf860 RDI: 0000000000000008 [ 41.761636] RBP: ffff8801d83a7320 R08: dffffc0000000000 R09: fffffbfff12d69a0 [ 41.768926] R10: fffffbfff12d69a0 R11: ffffffff896b4d03 R12: ffff8801b1334370 [ 41.776209] R13: dffffc0000000000 R14: ffff8801d83a72f8 R15: ffff8801d83a7438 [ 41.783481] FS: 0000000001dfa880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 41.791721] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.797615] CR2: 0000000020000080 CR3: 00000001c4c4a000 CR4: 00000000001406f0 [ 41.804896] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 41.812160] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 41.819440] Kernel panic - not syncing: Fatal exception [ 41.825920] Kernel Offset: disabled [ 41.829545] Rebooting in 86400 seconds..