[ 33.319448] audit: type=1800 audit(1555890363.867:33): pid=6893 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=2465 res=0 [ 33.346411] audit: type=1800 audit(1555890363.877:34): pid=6893 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=2456 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 35.335150] random: sshd: uninitialized urandom read (32 bytes read) [ 35.651411] audit: type=1400 audit(1555890366.207:35): avc: denied { map } for pid=7063 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 [ 35.703918] random: sshd: uninitialized urandom read (32 bytes read) [ 36.267157] random: sshd: uninitialized urandom read (32 bytes read) [ 36.466128] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.231' (ECDSA) to the list of known hosts. [ 42.044293] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 42.177188] audit: type=1400 audit(1555890372.727:36): avc: denied { map } for pid=7075 comm="syz-executor298" path="/root/syz-executor298416145" 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 [ 42.181566] kasan: CONFIG_KASAN_INLINE enabled [ 42.208313] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 42.215802] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 42.222024] Modules linked in: [ 42.225204] CPU: 1 PID: 7075 Comm: syz-executor298 Not tainted 4.14.113 #3 [ 42.232193] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.241560] task: ffff888095674700 task.stack: ffff8880a4190000 [ 42.247776] RIP: 0010:rb_erase+0x29/0x1c10 [ 42.252017] RSP: 0018:ffff8880a41979d0 EFLAGS: 00010282 [ 42.257389] RAX: dffffc0000000000 RBX: ffff88809a3d0330 RCX: 1ffff11014832f12 [ 42.264644] RDX: 0000000000000001 RSI: ffffffff892478c0 RDI: 0000000000000008 [ 42.271924] RBP: ffff8880a4197a18 R08: ffffffff88d117cc R09: 0000000000001b84 [ 42.279183] R10: ffff8880a41977d0 R11: ffff888095674700 R12: 0000000000000000 [ 42.286462] R13: ffff88809a3c6370 R14: 0000000000000000 R15: ffffffff867a2600 [ 42.293723] FS: 00000000016a2880(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 [ 42.301931] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.307802] CR2: 0000562aaf40b1a0 CR3: 0000000095086000 CR4: 00000000001406e0 [ 42.315058] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 42.322341] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 42.329625] Call Trace: [ 42.332224] integrity_inode_free+0x126/0x320 [ 42.336709] security_inode_free+0x19/0x90 [ 42.340941] __destroy_inode+0x1ef/0x4e0 [ 42.344989] destroy_inode+0x50/0x130 [ 42.348775] evict+0x3e9/0x630 [ 42.351969] iput+0x476/0x900 [ 42.355068] ? ext4_nfs_commit_metadata+0x2f0/0x2f0 [ 42.360251] ext4_ioctl+0x16bb/0x39b0 [ 42.364038] ? avc_ss_reset+0x110/0x110 [ 42.367994] ? save_stack+0x45/0xd0 [ 42.371617] ? ext4_ioctl_setflags+0x5d0/0x5d0 [ 42.376195] ? find_held_lock+0x35/0x130 [ 42.380253] ? debug_check_no_obj_freed+0x2aa/0x7b7 [ 42.385255] ? __might_sleep+0x93/0xb0 [ 42.389128] ? ext4_ioctl_setflags+0x5d0/0x5d0 [ 42.393695] do_vfs_ioctl+0x7b9/0x1070 [ 42.397565] ? selinux_file_mprotect+0x5d0/0x5d0 [ 42.402319] ? ioctl_preallocate+0x1c0/0x1c0 [ 42.406729] ? putname+0xe0/0x120 [ 42.410164] ? do_sys_open+0x221/0x430 [ 42.414037] ? security_file_ioctl+0x83/0xc0 [ 42.418440] ? security_file_ioctl+0x8f/0xc0 [ 42.422842] SyS_ioctl+0x8f/0xc0 [ 42.426189] ? do_vfs_ioctl+0x1070/0x1070 [ 42.430325] do_syscall_64+0x1eb/0x630 [ 42.434193] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.439198] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 42.444370] RIP: 0033:0x440169 [ 42.447542] RSP: 002b:00007ffe15735d38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 42.455230] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440169 [ 42.462483] RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000004 [ 42.469759] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 42.477035] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004019f0 [ 42.484292] R13: 0000000000401a80 R14: 0000000000000000 R15: 0000000000000000 [ 42.491551] Code: 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 41 57 41 56 49 89 fe 48 83 c7 08 48 89 fa 41 55 48 c1 ea 03 41 54 53 48 83 ec 20 <80> 3c 02 00 0f 85 0c 11 00 00 49 8d 7e 10 4d 8b 7e 08 48 b8 00 [ 42.510680] RIP: rb_erase+0x29/0x1c10 RSP: ffff8880a41979d0 [ 42.516479] ---[ end trace f1eb71135e4505bd ]--- [ 42.521250] Kernel panic - not syncing: Fatal exception [ 42.527435] Kernel Offset: disabled [ 42.531063] Rebooting in 86400 seconds..