[ 34.799165] audit: type=1800 audit(1565460729.607:33): 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 [ 34.828674] audit: type=1800 audit(1565460729.617:34): 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: [ 39.305210] random: sshd: uninitialized urandom read (32 bytes read) [ 39.636091] audit: type=1400 audit(1565460734.447:35): avc: denied { map } for pid=7035 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 [ 39.687098] random: sshd: uninitialized urandom read (32 bytes read) [ 40.257650] random: sshd: uninitialized urandom read (32 bytes read) [ 40.454950] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.19' (ECDSA) to the list of known hosts. [ 46.336412] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 46.455436] audit: type=1400 audit(1565460741.267:36): avc: denied { map } for pid=7047 comm="syz-executor180" path="/root/syz-executor180672433" 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 [ 46.458701] kasan: CONFIG_KASAN_INLINE enabled [ 46.486892] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 46.494419] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 46.500644] Modules linked in: [ 46.503987] CPU: 1 PID: 7047 Comm: syz-executor180 Not tainted 4.14.138 #34 [ 46.511079] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.521022] task: ffff8880a92e2240 task.stack: ffff8880a92d8000 [ 46.527071] RIP: 0010:rb_erase+0x29/0x1c10 [ 46.531292] RSP: 0018:ffff8880a92df9d0 EFLAGS: 00010282 [ 46.536942] RAX: dffffc0000000000 RBX: ffff888086a32930 RCX: 1ffff1101525bf12 [ 46.545656] RDX: 0000000000000001 RSI: ffffffff8924d880 RDI: 0000000000000008 [ 46.552937] RBP: ffff8880a92dfa18 R08: ffffffff88d1799c R09: 0000000000001b60 [ 46.560450] R10: ffff8880a92df7d0 R11: ffff8880a92e2240 R12: 0000000000000000 [ 46.568507] R13: ffff888086a803b0 R14: 0000000000000000 R15: ffffffff867a3300 [ 46.576320] FS: 0000000000c56880(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 [ 46.585204] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 46.591140] CR2: 0000000020000300 CR3: 00000000a72cc000 CR4: 00000000001406e0 [ 46.598403] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 46.605865] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 46.613119] Call Trace: [ 46.615961] integrity_inode_free+0x126/0x320 [ 46.620460] security_inode_free+0x19/0x90 [ 46.625267] __destroy_inode+0x1ef/0x4e0 [ 46.629387] destroy_inode+0x50/0x120 [ 46.633519] evict+0x3e6/0x630 [ 46.636777] iput+0x471/0x900 [ 46.639872] ? ext4_nfs_commit_metadata+0x2f0/0x2f0 [ 46.645040] ext4_ioctl+0x16b0/0x3920 [ 46.649058] ? avc_ss_reset+0x110/0x110 [ 46.653014] ? kmem_cache_free+0x83/0x2b0 [ 46.657535] ? ext4_ioctl_check_immutable+0x1c0/0x1c0 [ 46.662877] ? debug_check_no_obj_freed+0x2aa/0x7b7 [ 46.668229] ? __might_sleep+0x93/0xb0 [ 46.672293] ? ext4_ioctl_check_immutable+0x1c0/0x1c0 [ 46.677611] do_vfs_ioctl+0x7ae/0x1060 [ 46.681525] ? selinux_file_mprotect+0x5d0/0x5d0 [ 46.686272] ? kmem_cache_free+0x244/0x2b0 [ 46.690674] ? ioctl_preallocate+0x1c0/0x1c0 [ 46.695144] ? putname+0xe0/0x120 [ 46.698699] ? do_sys_open+0x221/0x430 [ 46.702646] ? security_file_ioctl+0x7d/0xb0 [ 46.707226] ? security_file_ioctl+0x89/0xb0 [ 46.711910] SyS_ioctl+0x8f/0xc0 [ 46.715608] ? do_vfs_ioctl+0x1060/0x1060 [ 46.719747] do_syscall_64+0x1e8/0x640 [ 46.723749] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 46.728585] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 46.733772] RIP: 0033:0x4401d9 [ 46.736954] RSP: 002b:00007ffe8ef49318 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 46.745074] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401d9 [ 46.752340] RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000003 [ 46.759602] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 46.766991] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a60 [ 46.774613] R13: 0000000000401af0 R14: 0000000000000000 R15: 0000000000000000 [ 46.781883] 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 [ 46.802134] RIP: rb_erase+0x29/0x1c10 RSP: ffff8880a92df9d0 [ 46.807968] ---[ end trace dad8d3af4acdb8dd ]--- [ 46.812826] Kernel panic - not syncing: Fatal exception [ 46.819375] Kernel Offset: disabled [ 46.823003] Rebooting in 86400 seconds..