[ 37.364197] audit: type=1800 audit(1564929765.246:33): pid=6946 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 [ 37.392316] audit: type=1800 audit(1564929765.246:34): pid=6946 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 [ 37.889692] random: sshd: uninitialized urandom read (32 bytes read) [ 38.336949] audit: type=1400 audit(1564929766.216:35): avc: denied { map } for pid=7118 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 [ 38.384105] random: sshd: uninitialized urandom read (32 bytes read) Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 38.971398] random: sshd: uninitialized urandom read (32 bytes read) [ 39.170708] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.1.16' (ECDSA) to the list of known hosts. [ 44.687948] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 44.828790] audit: type=1400 audit(1564929772.706:36): avc: denied { map } for pid=7130 comm="syz-executor271" path="/root/syz-executor271789419" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 44.858882] ------------[ cut here ]------------ [ 44.863715] kernel BUG at mm/slab.c:4427! [ 44.868166] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 44.873565] Modules linked in: [ 44.877075] CPU: 1 PID: 7130 Comm: syz-executor271 Not tainted 4.14.136 #32 [ 44.884603] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.894045] task: ffff888092d00200 task.stack: ffff88809ddb0000 [ 44.900121] RIP: 0010:__check_heap_object+0x58/0x5a [ 44.905125] RSP: 0018:ffff88809ddb7bc0 EFLAGS: 00010246 [ 44.910479] RAX: 0000000000000001 RBX: 00000000000003a3 RCX: 0000000000000015 [ 44.917744] RDX: 00000000003fdf7b RSI: 00000000000003a3 RDI: ffff8880813ffff3 [ 44.925008] RBP: ffff88809ddb7c00 R08: ffff8880aa802c80 R09: ffff888081000080 [ 44.932840] R10: ffff88821fff8050 R11: 0000000000000001 R12: ffff8880813ffff3 [ 44.940109] R13: ffffea0002040000 R14: 0000000000000001 R15: ffffea0002040000 [ 44.947392] FS: 0000000002077880(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 [ 44.955608] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.961483] CR2: 0000556eab6bd1b0 CR3: 00000000a7fb6000 CR4: 00000000001406e0 [ 44.968744] Call Trace: [ 44.971324] ? __check_object_size+0x14c/0x2ab [ 44.975907] bpf_test_finish.isra.0+0x9a/0x150 [ 44.980502] ? bpf_test_run+0x330/0x330 [ 44.984466] bpf_prog_test_run_skb+0x5af/0x9a0 [ 44.989042] ? bpf_test_init.isra.0+0xe0/0xe0 [ 44.993547] ? __bpf_prog_get+0x153/0x1a0 [ 44.997801] SyS_bpf+0x749/0x38f3 [ 45.001262] ? __do_page_fault+0x4e9/0xb80 [ 45.005724] ? bpf_test_init.isra.0+0xe0/0xe0 [ 45.010225] ? bpf_prog_get+0x20/0x20 [ 45.014629] ? lock_downgrade+0x6e0/0x6e0 [ 45.018792] ? up_read+0x1a/0x40 [ 45.022177] ? __do_page_fault+0x358/0xb80 [ 45.026410] ? bpf_prog_get+0x20/0x20 [ 45.030304] do_syscall_64+0x1e8/0x640 [ 45.034181] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 45.039018] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 45.044939] RIP: 0033:0x440379 [ 45.048316] RSP: 002b:00007ffc110b0c48 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 45.056143] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440379 [ 45.063420] RDX: 0000000000000028 RSI: 0000000020000140 RDI: 000000000000000a [ 45.070706] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 45.077969] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401c00 [ 45.085236] R13: 0000000000401c90 R14: 0000000000000000 R15: 0000000000000000 [ 45.092524] Code: e8 41 39 40 24 76 24 41 0f af 40 14 4c 01 c8 48 29 c7 49 63 40 74 48 39 f8 72 08 48 29 f8 48 39 f0 73 05 49 8b 40 58 c3 31 c0 c3 <0f> 0b 44 89 e9 48 c7 c7 70 cf 41 87 89 75 d4 4c 8d 45 cc 81 e1 [ 45.111655] RIP: __check_heap_object+0x58/0x5a RSP: ffff88809ddb7bc0 [ 45.118632] ---[ end trace ca535ca8d21adb4d ]--- [ 45.123857] Kernel panic - not syncing: Fatal exception [ 45.130244] Kernel Offset: disabled [ 45.133865] Rebooting in 86400 seconds..