Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 34.013424] kauditd_printk_skb: 9 callbacks suppressed [ 34.013437] audit: type=1800 audit(1543605249.827:33): pid=6001 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=2432 res=0 [ 34.050294] audit: type=1800 audit(1543605249.827:34): pid=6001 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=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 37.768075] audit: type=1400 audit(1543605253.577:35): avc: denied { map } for pid=6177 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 Warning: Permanently added '10.128.0.19' (ECDSA) to the list of known hosts. executing program [ 59.450092] audit: type=1400 audit(1543605275.257:36): avc: denied { map } for pid=6190 comm="syz-executor926" path="/root/syz-executor926109541" 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 [ 59.456394] ------------[ cut here ]------------ [ 59.481372] kernel BUG at security/keys/keyring.c:1214! [ 59.486871] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 59.492248] CPU: 1 PID: 6190 Comm: syz-executor926 Not tainted 4.20.0-rc4+ #136 [ 59.499681] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.509149] RIP: 0010:__key_link_begin+0x23a/0x300 [ 59.514081] Code: fe 48 c7 c7 c0 bb 87 89 e8 03 1f 1f fe eb ac e8 5c 27 3e fe 48 c7 c7 c0 bb 87 89 e8 e0 ea 99 04 e9 e3 fe ff ff e8 46 27 3e fe <0f> 0b e8 3f 27 3e fe 48 8d bb ce 00 00 00 48 b8 00 00 00 00 00 fc [ 59.533044] RSP: 0018:ffff8881ce1afb10 EFLAGS: 00010293 [ 59.538401] RAX: ffff8881cddd2400 RBX: ffff8881d4088080 RCX: ffffffff834161cf [ 59.545663] RDX: 0000000000000000 RSI: ffffffff834163ba RDI: 0000000000000007 [ 59.552986] RBP: ffff8881ce1afb40 R08: ffff8881cddd2400 R09: fffffbfff130f658 [ 59.560264] R10: fffffbfff130f658 R11: ffffffff8987b2c3 R12: ffff8881ce1afc48 [ 59.567529] R13: 0000000000000000 R14: ffff8881d4088200 R15: ffff8881d4088080 [ 59.574793] FS: 0000000000e9a880(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 [ 59.583012] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.588885] CR2: 0000000020cab000 CR3: 00000001cddb9000 CR4: 00000000001406e0 [ 59.596153] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 59.603411] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 59.610667] Call Trace: [ 59.613264] request_key_and_link+0x737/0x17a0 [ 59.617862] ? call_sbin_request_key+0xf80/0xf80 [ 59.622615] ? lock_release+0xa00/0xa00 [ 59.626576] ? perf_trace_sched_process_exec+0x860/0x860 [ 59.632015] ? join_session_keyring+0x340/0x340 [ 59.636686] ? usercopy_warn+0x110/0x110 [ 59.640735] ? keyring_alloc+0xc0/0xc0 [ 59.644618] ? __down_interruptible+0x700/0x700 [ 59.649283] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 59.654818] __x64_sys_request_key+0x305/0x400 [ 59.659414] ? __ia32_sys_add_key+0x4f0/0x4f0 [ 59.663904] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 59.669315] ? trace_hardirqs_off_caller+0x310/0x310 [ 59.674412] ? __sys_setresuid+0x6f3/0x820 [ 59.678636] do_syscall_64+0x1b9/0x820 [ 59.682511] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 59.687869] ? syscall_return_slowpath+0x5e0/0x5e0 [ 59.692802] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 59.697640] ? trace_hardirqs_on_caller+0x310/0x310 [ 59.702656] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 59.707667] ? prepare_exit_to_usermode+0x291/0x3b0 [ 59.712670] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 59.717501] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 59.722827] RIP: 0033:0x440139 [ 59.726012] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 59.744904] RSP: 002b:00007ffecaee4828 EFLAGS: 00000217 ORIG_RAX: 00000000000000f9 [ 59.752602] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440139 [ 59.759986] RDX: 0000000020000200 RSI: 0000000020000040 RDI: 0000000020000000 [ 59.767315] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 59.774580] R10: 000000003bd9541f R11: 0000000000000217 R12: 00000000004019c0 [ 59.781839] R13: 0000000000401a50 R14: 0000000000000000 R15: 0000000000000000 [ 59.789106] Modules linked in: [ 59.793022] ---[ end trace 88c784dfe345762a ]--- [ 59.797788] RIP: 0010:__key_link_begin+0x23a/0x300 [ 59.802918] Code: fe 48 c7 c7 c0 bb 87 89 e8 03 1f 1f fe eb ac e8 5c 27 3e fe 48 c7 c7 c0 bb 87 89 e8 e0 ea 99 04 e9 e3 fe ff ff e8 46 27 3e fe <0f> 0b e8 3f 27 3e fe 48 8d bb ce 00 00 00 48 b8 00 00 00 00 00 fc [ 59.821924] RSP: 0018:ffff8881ce1afb10 EFLAGS: 00010293 [ 59.827395] RAX: ffff8881cddd2400 RBX: ffff8881d4088080 RCX: ffffffff834161cf [ 59.834715] RDX: 0000000000000000 RSI: ffffffff834163ba RDI: 0000000000000007 [ 59.842173] RBP: ffff8881ce1afb40 R08: ffff8881cddd2400 R09: fffffbfff130f658 [ 59.849436] R10: fffffbfff130f658 R11: ffffffff8987b2c3 R12: ffff8881ce1afc48 [ 59.856756] R13: 0000000000000000 R14: ffff8881d4088200 R15: ffff8881d4088080 [ 59.864068] FS: 0000000000e9a880(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 [ 59.872397] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.878284] CR2: 0000000020cab000 CR3: 00000001cddb9000 CR4: 00000000001406e0 [ 59.885742] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 59.893042] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 59.900667] Kernel panic - not syncing: Fatal exception [ 59.906960] Kernel Offset: disabled [ 59.910590] Rebooting in 86400 seconds..