[ 31.851989] audit: type=1800 audit(1555886608.575:33): pid=6861 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 [ 31.879582] audit: type=1800 audit(1555886608.575:34): pid=6861 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: [ 34.971537] random: sshd: uninitialized urandom read (32 bytes read) [ 35.261003] audit: type=1400 audit(1555886611.985:35): avc: denied { map } for pid=7036 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 [ 35.307515] random: sshd: uninitialized urandom read (32 bytes read) [ 35.910438] random: sshd: uninitialized urandom read (32 bytes read) [ 36.107961] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.231' (ECDSA) to the list of known hosts. [ 42.196104] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 42.317468] audit: type=1400 audit(1555886619.035:36): avc: denied { map } for pid=7049 comm="syz-executor422" path="/root/syz-executor422858787" 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 [ 42.322778] kasan: CONFIG_KASAN_INLINE enabled [ 42.351267] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 42.359870] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 42.366959] Modules linked in: [ 42.370150] CPU: 1 PID: 7049 Comm: syz-executor422 Not tainted 4.14.113 #3 [ 42.377386] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.387094] task: ffff88809c7e8080 task.stack: ffff8880a60c8000 [ 42.393525] RIP: 0010:rb_erase+0x29/0x1c10 [ 42.397933] RSP: 0018:ffff8880a60cf9d0 EFLAGS: 00010282 [ 42.403406] RAX: dffffc0000000000 RBX: ffff88809450c3b0 RCX: 1ffff11014c19f12 [ 42.410718] RDX: 0000000000000001 RSI: ffffffff892478c0 RDI: 0000000000000008 [ 42.418341] RBP: ffff8880a60cfa18 R08: ffffffff88d117cc R09: 0000000000001afe [ 42.425978] R10: ffff8880a60cf7d0 R11: ffff88809c7e8080 R12: 0000000000000000 [ 42.433358] R13: ffff8880944e03f0 R14: 0000000000000000 R15: ffffffff867a2600 [ 42.440788] FS: 00000000020b8880(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 [ 42.449662] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.455760] CR2: 0000000020000280 CR3: 00000000a07e2000 CR4: 00000000001406e0 [ 42.463028] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 42.470563] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 42.478415] Call Trace: [ 42.481148] integrity_inode_free+0x126/0x320 [ 42.485647] security_inode_free+0x19/0x90 [ 42.490018] __destroy_inode+0x1ef/0x4e0 [ 42.494085] destroy_inode+0x50/0x130 [ 42.497908] evict+0x3e9/0x630 [ 42.501184] iput+0x476/0x900 [ 42.504288] ? ext4_nfs_commit_metadata+0x2f0/0x2f0 [ 42.509396] ext4_ioctl+0x16bb/0x39b0 [ 42.513279] ? avc_ss_reset+0x110/0x110 [ 42.517492] ? kmem_cache_free+0x83/0x2b0 [ 42.521808] ? ext4_ioctl_setflags+0x5d0/0x5d0 [ 42.526624] ? debug_check_no_obj_freed+0x2aa/0x7b7 [ 42.532140] ? __might_sleep+0x93/0xb0 [ 42.536078] ? ext4_ioctl_setflags+0x5d0/0x5d0 [ 42.540798] do_vfs_ioctl+0x7b9/0x1070 [ 42.544682] ? selinux_file_mprotect+0x5d0/0x5d0 [ 42.549433] ? kmem_cache_free+0x247/0x2b0 [ 42.553663] ? ioctl_preallocate+0x1c0/0x1c0 [ 42.558908] ? putname+0xe0/0x120 [ 42.562569] ? do_sys_open+0x221/0x430 [ 42.568748] ? security_file_ioctl+0x83/0xc0 [ 42.573234] ? security_file_ioctl+0x8f/0xc0 [ 42.578129] SyS_ioctl+0x8f/0xc0 [ 42.581660] ? do_vfs_ioctl+0x1070/0x1070 [ 42.586319] do_syscall_64+0x1eb/0x630 [ 42.590208] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.595327] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 42.600766] RIP: 0033:0x440179 [ 42.604084] RSP: 002b:00007ffe6c242318 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 42.612127] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440179 [ 42.619825] RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000003 [ 42.627308] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 42.634892] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a00 [ 42.642515] R13: 0000000000401a90 R14: 0000000000000000 R15: 0000000000000000 [ 42.650393] 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 [ 42.670187] RIP: rb_erase+0x29/0x1c10 RSP: ffff8880a60cf9d0 [ 42.676597] ---[ end trace bdd05dadd0ba4b75 ]--- [ 42.681639] Kernel panic - not syncing: Fatal exception [ 42.688673] Kernel Offset: disabled [ 42.692761] Rebooting in 86400 seconds..