[ 76.836797][ T27] audit: type=1800 audit(1581979062.377:26): pid=9692 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 77.681297][ T27] kauditd_printk_skb: 2 callbacks suppressed [ 77.681310][ T27] audit: type=1800 audit(1581979063.257:29): pid=9692 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 77.708686][ T27] audit: type=1800 audit(1581979063.257:30): pid=9692 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.194' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 87.542053][ T9844] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 87.553785][ T9844] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 87.562188][ T9844] CPU: 0 PID: 9844 Comm: syz-executor679 Not tainted 5.6.0-rc2-next-20200217-syzkaller #0 [ 87.572157][ T9844] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 87.582218][ T9844] RIP: 0010:l2cap_sock_getsockopt+0x7d3/0x1200 [ 87.588400][ T9844] Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 a0 09 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 1f 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 75 09 00 00 48 8b 3b e8 cb be f6 ff be 67 02 00 [ 87.608011][ T9844] RSP: 0018:ffffc900062f7d20 EFLAGS: 00010246 [ 87.614131][ T9844] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff87253e8c [ 87.622137][ T9844] RDX: 0000000000000000 RSI: ffffffff87253f44 RDI: 0000000000000001 [ 87.630123][ T9844] RBP: ffffc900062f7e00 R08: ffff88808a5001c0 R09: fffffbfff16a3f80 [ 87.638080][ T9844] R10: fffffbfff16a3f7f R11: ffffffff8b51fbff R12: 0000000000000000 [ 87.646061][ T9844] R13: 1ffff92000c5efa7 R14: ffff8880a9a79000 R15: ffff8880a1d92000 [ 87.654028][ T9844] FS: 0000000001ccd880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 87.662943][ T9844] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 87.669506][ T9844] CR2: 0000000020000140 CR3: 0000000097113000 CR4: 00000000001406f0 [ 87.677465][ T9844] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 87.685549][ T9844] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 87.693515][ T9844] Call Trace: [ 87.697205][ T9844] ? l2cap_sock_recv_cb+0x200/0x200 [ 87.702476][ T9844] ? aa_sock_opt_perm.isra.0+0xa1/0x130 [ 87.708020][ T9844] ? apparmor_socket_getsockopt+0x22/0x30 [ 87.713730][ T9844] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 87.719958][ T9844] ? security_socket_getsockopt+0x8d/0xc0 [ 87.725671][ T9844] __sys_getsockopt+0x16d/0x310 [ 87.730672][ T9844] ? up_read+0x1cd/0x810 [ 87.734906][ T9844] ? kernel_accept+0x360/0x360 [ 87.739659][ T9844] ? down_read_nested+0x440/0x440 [ 87.744675][ T9844] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 87.750178][ T9844] ? do_syscall_64+0x26/0x790 [ 87.754844][ T9844] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 87.761015][ T9844] ? do_syscall_64+0x26/0x790 [ 87.765678][ T9844] __x64_sys_getsockopt+0xbe/0x150 [ 87.770783][ T9844] do_syscall_64+0xfa/0x790 [ 87.775327][ T9844] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 87.781223][ T9844] RIP: 0033:0x440149 [ 87.785114][ T9844] 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 [ 87.804715][ T9844] RSP: 002b:00007ffcb256f088 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 [ 87.813173][ T9844] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440149 [ 87.821917][ T9844] RDX: 000000000000000e RSI: 0000000000000112 RDI: 0000000000000003 [ 87.829985][ T9844] RBP: 00000000006ca018 R08: 0000000020000140 R09: 00000000004002c8 [ 87.837950][ T9844] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004019d0 [ 87.845906][ T9844] R13: 0000000000401a60 R14: 0000000000000000 R15: 0000000000000000 [ 87.853873][ T9844] Modules linked in: [ 87.858458][ T9844] ---[ end trace 63f0b6416dbaab7d ]--- [ 87.863941][ T9844] RIP: 0010:l2cap_sock_getsockopt+0x7d3/0x1200 [ 87.870149][ T9844] Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 a0 09 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 1f 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 75 09 00 00 48 8b 3b e8 cb be f6 ff be 67 02 00 [ 87.889791][ T9844] RSP: 0018:ffffc900062f7d20 EFLAGS: 00010246 [ 87.896000][ T9844] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff87253e8c [ 87.904018][ T9844] RDX: 0000000000000000 RSI: ffffffff87253f44 RDI: 0000000000000001 [ 87.912015][ T9844] RBP: ffffc900062f7e00 R08: ffff88808a5001c0 R09: fffffbfff16a3f80 [ 87.920016][ T9844] R10: fffffbfff16a3f7f R11: ffffffff8b51fbff R12: 0000000000000000 [ 87.928005][ T9844] R13: 1ffff92000c5efa7 R14: ffff8880a9a79000 R15: ffff8880a1d92000 [ 87.935971][ T9844] FS: 0000000001ccd880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 87.944990][ T9844] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 87.951597][ T9844] CR2: 0000000020000140 CR3: 0000000097113000 CR4: 00000000001406f0 [ 87.959698][ T9844] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 87.967737][ T9844] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 87.975708][ T9844] Kernel panic - not syncing: Fatal exception [ 87.983178][ T9844] Kernel Offset: disabled [ 87.987507][ T9844] Rebooting in 86400 seconds..