[....] 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 maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [ 29.205198] kauditd_printk_skb: 9 callbacks suppressed [ 29.205210] audit: type=1800 audit(1537916680.069:33): pid=5310 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 [ 29.233215] audit: type=1800 audit(1537916680.069:34): pid=5310 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: [ 32.787767] audit: type=1400 audit(1537916683.649:35): avc: denied { map } for pid=5487 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 '10.128.10.14' (ECDSA) to the list of known hosts. executing program [ 39.441429] audit: type=1400 audit(1537916690.299:36): avc: denied { map } for pid=5501 comm="syz-executor066" path="/root/syz-executor066552273" 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 [ 39.446448] kasan: CONFIG_KASAN_INLINE enabled [ 39.472523] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 39.479887] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 39.486101] CPU: 0 PID: 5501 Comm: syz-executor066 Not tainted 4.19.0-rc5+ #33 [ 39.493444] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.502787] RIP: 0010:rb_erase+0x306/0x3710 [ 39.507092] 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 [ 39.525985] RSP: 0018:ffff8801c528e918 EFLAGS: 00010202 [ 39.531349] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 39.538598] RDX: 1ffff10038a51d2b RSI: ffffffff8b5a08a0 RDI: 0000000000000008 [ 39.545861] RBP: ffff8801c528f320 R08: dffffc0000000000 R09: fffffbfff135d5c8 [ 39.553110] R10: fffffbfff135d5c8 R11: ffffffff89aeae43 R12: ffff8801b338e3f0 [ 39.560372] R13: dffffc0000000000 R14: ffff8801c528f2f8 R15: ffff8801c528f438 [ 39.567625] FS: 0000000002150880(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 [ 39.575829] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.581688] CR2: 0000000020000700 CR3: 00000001c64b1000 CR4: 00000000001406f0 [ 39.588943] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.596193] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.603442] Call Trace: [ 39.606017] ? lockdep_on+0x50/0x50 [ 39.609626] ? rb_insert_color+0x1460/0x1460 [ 39.614021] ? noop_count+0x40/0x40 [ 39.617627] ? lock_pin_lock+0x350/0x350 [ 39.621717] ? noop_count+0x40/0x40 [ 39.625332] ? kasan_check_read+0x11/0x20 [ 39.629458] ? noop_count+0x40/0x40 [ 39.633067] ? noop_count+0x40/0x40 [ 39.636675] ? lock_pin_lock+0x350/0x350 [ 39.640717] ? mark_held_locks+0x130/0x130 [ 39.644937] ? check_usage_forwards+0x3e0/0x3e0 [ 39.649589] ? __bfs+0x385/0x7a0 [ 39.652957] ? noop_count+0x40/0x40 [ 39.656592] ? check_usage+0x1a9/0x790 [ 39.660464] ? lock_pin_lock+0x350/0x350 [ 39.664518] ? check_usage_forwards+0x3e0/0x3e0 [ 39.669169] ? __bfs+0x385/0x7a0 [ 39.672518] ? __lock_acquire+0x7ec/0x4ec0 [ 39.676734] ? lockdep_on+0x50/0x50 [ 39.680340] ? lock_pin_lock+0x350/0x350 [ 39.684386] ? mark_held_locks+0x130/0x130 [ 39.688604] ? kasan_check_read+0x11/0x20 [ 39.692731] ? __lock_acquire+0x2881/0x4ec0 [ 39.697062] ? mark_held_locks+0x130/0x130 [ 39.701277] ? print_usage_bug+0xc0/0xc0 [ 39.705321] ? _raw_spin_unlock+0x2c/0x50 [ 39.709450] ? graph_lock+0x170/0x170 [ 39.713236] ? ext4_exit_mballoc+0xc0/0xc0 [ 39.717728] ? __lock_acquire+0x7ec/0x4ec0 [ 39.721945] ? find_held_lock+0x36/0x1c0 [ 39.726007] ? mark_held_locks+0x130/0x130 [ 39.730221] ? lock_downgrade+0x900/0x900 [ 39.734349] ? ext4_es_scan+0x960/0x960 [ 39.738304] ? lock_release+0x970/0x970 [ 39.742273] ? do_raw_write_trylock+0x1c0/0x1c0 [ 39.746930] ? kasan_check_write+0x14/0x20 [ 39.751146] ? lock_acquire+0x1ed/0x520 [ 39.755100] ? integrity_inode_free+0x77/0x320 [ 39.759664] ? ext4_es_remove_extent+0x151/0x500 [ 39.764402] ? lock_release+0x970/0x970 [ 39.768358] ? kasan_check_write+0x14/0x20 [ 39.772578] ? do_raw_write_lock+0xbd/0x1b0 [ 39.776882] integrity_inode_free+0x12f/0x320 [ 39.781358] security_inode_free+0x19/0x90 [ 39.785578] __destroy_inode+0x328/0x820 [ 39.789619] ? generic_update_time+0x450/0x450 [ 39.794181] ? evict+0x5d8/0x980 [ 39.797526] ? lock_downgrade+0x900/0x900 [ 39.801660] ? __inode_wait_for_writeback+0x2cf/0x380 [ 39.806832] destroy_inode+0xda/0x200 [ 39.810614] ? __destroy_inode+0x820/0x820 [ 39.814852] ? kasan_check_write+0x14/0x20 [ 39.819070] ? do_raw_spin_lock+0xc1/0x200 [ 39.823285] evict+0x5e0/0x980 [ 39.826460] ? destroy_inode+0x200/0x200 [ 39.830503] ? iput+0x671/0xa90 [ 39.833776] ? lock_downgrade+0x900/0x900 [ 39.837919] ? kasan_check_read+0x11/0x20 [ 39.842049] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 39.846613] ? lock_downgrade+0x900/0x900 [ 39.850740] iput+0x679/0xa90 [ 39.853828] ? inode_add_lru+0x2a0/0x2a0 [ 39.857869] ? up_write+0x7b/0x220 [ 39.861385] ? up_read+0x110/0x110 [ 39.864904] ? up_read+0x110/0x110 [ 39.868447] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.873970] ? check_preemption_disabled+0x48/0x200 [ 39.878987] ext4_ioctl+0x236f/0x4210 [ 39.882777] ? ext4_ioctl_group_add+0x560/0x560 [ 39.887448] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 39.893225] ? kasan_check_read+0x11/0x20 [ 39.897361] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 39.902619] ? rcu_bh_qs+0xc0/0xc0 [ 39.906137] ? rcu_bh_qs+0xc0/0xc0 [ 39.909658] ? unwind_dump+0x190/0x190 [ 39.913529] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.919045] ? avc_has_extended_perms+0xab2/0x15a0 [ 39.923958] ? avc_ss_reset+0x190/0x190 [ 39.927937] ? save_stack+0xa9/0xd0 [ 39.931547] ? save_stack+0x43/0xd0 [ 39.935155] ? __kasan_slab_free+0x102/0x150 [ 39.939541] ? kasan_slab_free+0xe/0x10 [ 39.943497] ? kmem_cache_free+0x83/0x290 [ 39.947632] ? putname+0xf2/0x130 [ 39.951065] ? do_sys_open+0x54d/0x700 [ 39.954945] ? __x64_sys_open+0x7e/0xc0 [ 39.958903] ? do_syscall_64+0x1b9/0x820 [ 39.962961] ? kasan_check_read+0x11/0x20 [ 39.967099] ? ___might_sleep+0x1ed/0x300 [ 39.971230] ? arch_local_save_flags+0x40/0x40 [ 39.975792] ? kasan_check_write+0x14/0x20 [ 39.980014] ? trace_hardirqs_off+0xb8/0x310 [ 39.984409] ? ext4_ioctl_group_add+0x560/0x560 [ 39.989059] do_vfs_ioctl+0x1de/0x1720 [ 39.992930] ? ioctl_preallocate+0x300/0x300 [ 39.997320] ? selinux_file_mprotect+0x620/0x620 [ 40.002056] ? rcu_read_lock_sched_held+0x108/0x120 [ 40.007054] ? kmem_cache_free+0x18b/0x290 [ 40.011270] ? putname+0xf7/0x130 [ 40.014709] ? do_syscall_64+0x9a/0x820 [ 40.018664] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 40.024184] ? security_file_ioctl+0x94/0xc0 [ 40.028574] ksys_ioctl+0xa9/0xd0 [ 40.032013] __x64_sys_ioctl+0x73/0xb0 [ 40.035883] do_syscall_64+0x1b9/0x820 [ 40.039752] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 40.045100] ? syscall_return_slowpath+0x5e0/0x5e0 [ 40.050014] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.054839] ? trace_hardirqs_on_caller+0x310/0x310 [ 40.059835] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 40.064833] ? prepare_exit_to_usermode+0x291/0x3b0 [ 40.069831] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.074681] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 40.079849] RIP: 0033:0x440029 [ 40.083028] 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 [ 40.101916] RSP: 002b:00007ffe53f877e8 EFLAGS: 00000217 ORIG_RAX: 0000000000000010 [ 40.109628] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440029 [ 40.116884] RDX: 0000000000440029 RSI: 0000000000006611 RDI: 0000000000000004 [ 40.124142] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 40.131396] R10: 0000000000000000 R11: 0000000000000217 R12: 00000000004018b0 [ 40.138660] R13: 0000000000401940 R14: 0000000000000000 R15: 0000000000000000 [ 40.145914] Modules linked in: [ 40.149319] ---[ end trace f9f50cfa302ff6e2 ]--- [ 40.152295] kobject: 'regulatory.0' (00000000711b7984): kobject_uevent_env [ 40.154120] RIP: 0010:rb_erase+0x306/0x3710 [ 40.161135] kobject: 'regulatory.0' (00000000711b7984): fill_kobj_path: path = '/devices/platform/regulatory.0' [ 40.165468] 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 [ 40.165481] RSP: 0018:ffff8801c528e918 EFLAGS: 00010202 [ 40.200028] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 40.207336] RDX: 1ffff10038a51d2b RSI: ffffffff8b5a08a0 RDI: 0000000000000008 [ 40.214620] RBP: ffff8801c528f320 R08: dffffc0000000000 R09: fffffbfff135d5c8 [ 40.221887] R10: fffffbfff135d5c8 R11: ffffffff89aeae43 R12: ffff8801b338e3f0 [ 40.229166] R13: dffffc0000000000 R14: ffff8801c528f2f8 R15: ffff8801c528f438 [ 40.236452] FS: 0000000002150880(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 [ 40.244688] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.250564] CR2: 0000000020000700 CR3: 00000001c64b1000 CR4: 00000000001406f0 [ 40.257845] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.265131] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.272410] Kernel panic - not syncing: Fatal exception [ 40.278674] Kernel Offset: disabled [ 40.282319] Rebooting in 86400 seconds..