[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 10.915092] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 18.634459] random: sshd: uninitialized urandom read (32 bytes read) [ 18.931553] audit: type=1400 audit(1538731498.303:6): avc: denied { map } for pid=1762 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 [ 18.976718] random: sshd: uninitialized urandom read (32 bytes read) [ 19.460257] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.32' (ECDSA) to the list of known hosts. [ 25.197847] urandom_read: 1 callbacks suppressed [ 25.197851] random: sshd: uninitialized urandom read (32 bytes read) [ 25.303698] audit: type=1400 audit(1538731504.673:7): avc: denied { map } for pid=1780 comm="syz-executor384" path="/root/syz-executor384052972" 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 [ 25.306822] ------------[ cut here ]------------ [ 25.306837] kernel BUG at security/keys/keyring.c:1221! [ 25.306850] invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 25.306852] Modules linked in: [ 25.306861] CPU: 0 PID: 1780 Comm: syz-executor384 Not tainted 4.14.74+ #17 [ 25.306866] task: ffff8801cf415e00 task.stack: ffff8801cba88000 [ 25.306878] RIP: 0010:__key_link_begin+0x1f5/0x2b0 [ 25.306882] RSP: 0018:ffff8801cba8fc18 EFLAGS: 00010297 [ 25.306888] RAX: ffff8801cf415e00 RBX: ffff8801cc1c6000 RCX: 1ffff10039751f75 [ 25.306892] RDX: 0000000000000000 RSI: ffff8801cba8fd68 RDI: ffff8801cba8fd78 [ 25.306896] RBP: ffff8801cba8fd68 R08: 0000000000000001 R09: 0000000000000000 [ 25.306900] R10: 0000000000000000 R11: 0000000000000001 R12: 1ffff10039751f91 [ 25.306904] R13: ffff8801cba8fd68 R14: ffff8801cc3e58a0 R15: ffff8801cba8fce8 [ 25.306910] FS: 0000000000c1f880(0000) GS:ffff8801d7600000(0000) knlGS:0000000000000000 [ 25.306914] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.306918] CR2: 0000000020caaffb CR3: 00000001cf3dc002 CR4: 00000000001606b0 [ 25.306924] Call Trace: [ 25.306936] request_key_and_link+0x50f/0xa20 [ 25.306945] ? lookup_user_key+0x23f/0xd70 [ 25.306952] ? call_sbin_request_key+0x9b0/0x9b0 [ 25.306964] ? trace_hardirqs_on_caller+0x381/0x520 [ 25.306973] ? current_kernel_time64+0x101/0x120 [ 25.306983] ? lookup_user_key+0x123/0xd70 [ 25.306993] ? keyring_alloc+0xa0/0xa0 [ 25.307009] SyS_request_key+0x20e/0x2c0 [ 25.307017] ? commit_creds+0x3fa/0x9c0 [ 25.307024] ? SyS_add_key+0x340/0x340 [ 25.307035] ? do_syscall_64+0x43/0x4b0 [ 25.307042] ? SyS_add_key+0x340/0x340 [ 25.307049] do_syscall_64+0x19b/0x4b0 [ 25.307062] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 25.307066] RIP: 0033:0x440169 [ 25.307070] RSP: 002b:00007ffdf9ce7e88 EFLAGS: 00000217 ORIG_RAX: 00000000000000f9 [ 25.307076] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440169 [ 25.307080] RDX: 00000000200001c0 RSI: 0000000020000180 RDI: 00000000200000c0 [ 25.307084] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 25.307088] R10: 00000000157535cf R11: 0000000000000217 R12: 00000000004019f0 [ 25.307092] R13: 0000000000401a80 R14: 0000000000000000 R15: 0000000000000000 [ 25.307103] Code: 94 ff 48 c7 c7 00 8e dd 8f e8 08 3f 83 ff eb ac e8 31 ef 94 ff 48 c7 c7 00 8e dd 8f e8 75 34 e9 00 e9 00 ff ff ff e8 1b ef 94 ff <0f> 0b e8 14 ef 94 ff 48 8d bb ce 00 00 00 48 b8 00 00 00 00 00 [ 25.307227] RIP: __key_link_begin+0x1f5/0x2b0 RSP: ffff8801cba8fc18 [ 25.307231] ---[ end trace aef62e2ed8133767 ]--- [ 25.307235] Kernel panic - not syncing: Fatal exception [ 25.330123] Kernel Offset: 0xc800000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 25.586005] Rebooting in 86400 seconds..