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. [ 29.277762] kauditd_printk_skb: 9 callbacks suppressed [ 29.277774] audit: type=1800 audit(1539378945.469:33): pid=5284 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 [ 29.309467] audit: type=1800 audit(1539378945.469:34): pid=5284 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: [ 33.549107] audit: type=1400 audit(1539378949.739:35): avc: denied { map } for pid=5459 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 '10.128.0.19' (ECDSA) to the list of known hosts. executing program [ 47.463856] audit: type=1400 audit(1539378963.649:36): avc: denied { map } for pid=5474 comm="syz-executor912" path="/root/syz-executor912879146" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 47.468980] kasan: CONFIG_KASAN_INLINE enabled [ 47.494921] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 47.502438] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 47.508662] CPU: 0 PID: 5474 Comm: syz-executor912 Not tainted 4.19.0-rc7+ #59 [ 47.516003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.525350] RIP: 0010:rb_erase+0x306/0x3710 [ 47.529777] 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 [ 47.548666] RSP: 0018:ffff8801bc99e918 EFLAGS: 00010202 [ 47.554137] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 47.561403] RDX: 1ffff10037933d2b RSI: ffffffff8afbc860 RDI: 0000000000000008 [ 47.568655] RBP: ffff8801bc99f320 R08: dffffc0000000000 R09: fffffbfff12d69a0 [ 47.575908] R10: fffffbfff12d69a0 R11: ffffffff896b4d03 R12: ffff8801b2f573f0 [ 47.583167] R13: dffffc0000000000 R14: ffff8801bc99f2f8 R15: ffff8801bc99f438 [ 47.590419] FS: 00000000007f9880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 47.598627] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.604496] CR2: 0000000020000080 CR3: 00000001c5415000 CR4: 00000000001406f0 [ 47.611750] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 47.619004] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 47.626255] Call Trace: [ 47.628829] ? lockdep_on+0x50/0x50 [ 47.632438] ? rb_insert_color+0x1460/0x1460 [ 47.636829] ? noop_count+0x40/0x40 [ 47.640575] ? lock_pin_lock+0x350/0x350 [ 47.644628] ? noop_count+0x40/0x40 [ 47.648247] ? kasan_check_read+0x11/0x20 [ 47.652501] ? noop_count+0x40/0x40 [ 47.656178] ? noop_count+0x40/0x40 [ 47.659799] ? lock_pin_lock+0x350/0x350 [ 47.663842] ? mark_held_locks+0x130/0x130 [ 47.668168] ? check_usage_forwards+0x3e0/0x3e0 [ 47.672836] ? __bfs+0x385/0x7a0 [ 47.676199] ? noop_count+0x40/0x40 [ 47.679813] ? check_usage+0x1a9/0x790 [ 47.683679] ? lock_pin_lock+0x350/0x350 [ 47.687726] ? check_usage_forwards+0x3e0/0x3e0 [ 47.692373] ? __bfs+0x385/0x7a0 [ 47.695791] ? __lock_acquire+0x7ec/0x4ec0 [ 47.700012] ? lockdep_on+0x50/0x50 [ 47.703626] ? lock_pin_lock+0x350/0x350 [ 47.707673] ? mark_held_locks+0x130/0x130 [ 47.711894] ? kasan_check_read+0x11/0x20 [ 47.716024] ? __lock_acquire+0x2881/0x4ec0 [ 47.720332] ? mark_held_locks+0x130/0x130 [ 47.724549] ? print_usage_bug+0xc0/0xc0 [ 47.728592] ? _raw_spin_unlock+0x2c/0x50 [ 47.732725] ? graph_lock+0x170/0x170 [ 47.736513] ? ext4_exit_mballoc+0xc0/0xc0 [ 47.740733] ? __lock_acquire+0x7ec/0x4ec0 [ 47.744950] ? find_held_lock+0x36/0x1c0 [ 47.748995] ? mark_held_locks+0x130/0x130 [ 47.753212] ? lock_downgrade+0x900/0x900 [ 47.757346] ? ext4_es_scan+0x960/0x960 [ 47.761307] ? do_raw_write_trylock+0x1c0/0x1c0 [ 47.765961] ? kasan_check_write+0x14/0x20 [ 47.770287] ? lock_acquire+0x1ed/0x520 [ 47.774250] ? integrity_inode_free+0x77/0x320 [ 47.778820] ? ext4_es_remove_extent+0x151/0x500 [ 47.783565] ? lock_release+0x970/0x970 [ 47.787627] ? kasan_check_write+0x14/0x20 [ 47.791845] ? do_raw_write_lock+0xbd/0x1b0 [ 47.796161] integrity_inode_free+0x12f/0x320 [ 47.800643] security_inode_free+0x19/0x90 [ 47.804859] __destroy_inode+0x328/0x820 [ 47.808970] ? generic_update_time+0x450/0x450 [ 47.813542] ? evict+0x5d8/0x980 [ 47.816893] ? lock_downgrade+0x900/0x900 [ 47.821025] ? __inode_wait_for_writeback+0x2cf/0x380 [ 47.826200] destroy_inode+0xda/0x200 [ 47.829983] ? __destroy_inode+0x820/0x820 [ 47.834202] ? kasan_check_write+0x14/0x20 [ 47.838423] ? do_raw_spin_lock+0xc1/0x200 [ 47.842641] evict+0x5e0/0x980 [ 47.845819] ? destroy_inode+0x200/0x200 [ 47.849870] ? iput+0x671/0xa90 [ 47.853140] ? lock_downgrade+0x900/0x900 [ 47.857285] ? kasan_check_read+0x11/0x20 [ 47.861416] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 47.865981] ? lock_downgrade+0x900/0x900 [ 47.870112] iput+0x679/0xa90 [ 47.873202] ? inode_add_lru+0x2a0/0x2a0 [ 47.877256] ? up_write+0x7b/0x220 [ 47.880876] ? up_read+0x110/0x110 [ 47.884405] ? up_read+0x110/0x110 [ 47.887929] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 47.893452] ? check_preemption_disabled+0x48/0x200 [ 47.898541] ext4_ioctl+0x236f/0x4210 [ 47.902335] ? ext4_ioctl_group_add+0x560/0x560 [ 47.906995] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 47.912773] ? kasan_check_read+0x11/0x20 [ 47.916904] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 47.922171] ? rcu_bh_qs+0xc0/0xc0 [ 47.925695] ? unwind_dump+0x190/0x190 [ 47.929572] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 47.935090] ? avc_has_extended_perms+0xab2/0x15a0 [ 47.940011] ? fpu__prepare_read+0x17/0x750 [ 47.944319] ? avc_ss_reset+0x190/0x190 [ 47.948358] ? save_stack+0xa9/0xd0 [ 47.951982] ? save_stack+0x43/0xd0 [ 47.955593] ? __kasan_slab_free+0x102/0x150 [ 47.959982] ? kasan_slab_free+0xe/0x10 [ 47.963937] ? kmem_cache_free+0x83/0x290 [ 47.968175] ? putname+0xf2/0x130 [ 47.971616] ? do_sys_open+0x54d/0x700 [ 47.975487] ? __x64_sys_openat+0x9d/0x100 [ 47.979709] ? do_syscall_64+0x1b9/0x820 [ 47.983755] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 47.989111] ? ___might_sleep+0x1ed/0x300 [ 47.993242] ? arch_local_save_flags+0x40/0x40 [ 47.997810] ? kasan_check_write+0x14/0x20 [ 48.002033] ? trace_hardirqs_off+0xb8/0x310 [ 48.006426] ? ext4_ioctl_group_add+0x560/0x560 [ 48.011129] do_vfs_ioctl+0x1de/0x1720 [ 48.015021] ? ioctl_preallocate+0x300/0x300 [ 48.019420] ? selinux_file_mprotect+0x620/0x620 [ 48.024165] ? path_openat+0x931/0x5160 [ 48.028126] ? rcu_read_lock_sched_held+0x108/0x120 [ 48.033167] ? kmem_cache_free+0x24f/0x290 [ 48.037392] ? putname+0xf7/0x130 [ 48.040833] ? do_syscall_64+0x9a/0x820 [ 48.044854] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.050381] ? security_file_ioctl+0x94/0xc0 [ 48.054773] ksys_ioctl+0xa9/0xd0 [ 48.058253] __x64_sys_ioctl+0x73/0xb0 [ 48.062140] do_syscall_64+0x1b9/0x820 [ 48.066019] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 48.071366] ? syscall_return_slowpath+0x5e0/0x5e0 [ 48.076281] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 48.081107] ? trace_hardirqs_on_caller+0x310/0x310 [ 48.086208] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 48.091211] ? prepare_exit_to_usermode+0x291/0x3b0 [ 48.096214] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 48.101040] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 48.106208] RIP: 0033:0x440009 [ 48.109385] 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 [ 48.128321] RSP: 002b:00007ffe3940e4b8 EFLAGS: 00000213 ORIG_RAX: 0000000000000010 [ 48.136017] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440009 [ 48.143267] RDX: 0000000000440009 RSI: 0000000000006611 RDI: 0000000000000003 [ 48.150517] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 48.157765] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401890 [ 48.165014] R13: 0000000000401920 R14: 0000000000000000 R15: 0000000000000000 [ 48.172365] Modules linked in: [ 48.175610] ---[ end trace 10c15bf9f068f550 ]--- [ 48.180377] RIP: 0010:rb_erase+0x306/0x3710 [ 48.184686] 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 [ 48.203618] RSP: 0018:ffff8801bc99e918 EFLAGS: 00010202 [ 48.209057] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 48.216349] RDX: 1ffff10037933d2b RSI: ffffffff8afbc860 RDI: 0000000000000008 [ 48.223622] RBP: ffff8801bc99f320 R08: dffffc0000000000 R09: fffffbfff12d69a0 [ 48.230909] R10: fffffbfff12d69a0 R11: ffffffff896b4d03 R12: ffff8801b2f573f0 [ 48.238194] R13: dffffc0000000000 R14: ffff8801bc99f2f8 R15: ffff8801bc99f438 [ 48.245490] FS: 00000000007f9880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 48.253713] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 48.259611] CR2: 0000000020000080 CR3: 00000001c5415000 CR4: 00000000001406f0 [ 48.266898] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 48.274157] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 48.281437] Kernel panic - not syncing: Fatal exception [ 48.287710] Kernel Offset: disabled [ 48.291332] Rebooting in 86400 seconds..