[info] Using makefile-style concurrent boot in runlevel 2.
[   26.569272] audit: type=1800 audit(1542220402.050:21): pid=5822 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0
[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   31.691058] sshd (5960) used greatest stack depth: 15744 bytes left
Warning: Permanently added '10.128.10.5' (ECDSA) to the list of known hosts.
executing program
[   38.243543] ------------[ cut here ]------------
[   38.248446] verifier bug. No program starts at insn 7
[   38.253691] WARNING: CPU: 0 PID: 5976 at kernel/bpf/verifier.c:5880 bpf_check+0x5461/0x6310
[   38.262168] Kernel panic - not syncing: panic_on_warn set ...
[   38.268043] CPU: 0 PID: 5976 Comm: syz-executor411 Not tainted 4.20.0-rc2+ #333
[   38.275470] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   38.284809] Call Trace:
[   38.287392]  dump_stack+0x244/0x39d
[   38.291012]  ? dump_stack_print_info.cold.1+0x20/0x20
[   38.296197]  panic+0x2ad/0x55c
[   38.299376]  ? add_taint.cold.5+0x16/0x16
[   38.303510]  ? __warn.cold.8+0x5/0x45
[   38.307296]  ? __warn+0xe8/0x1d0
[   38.310648]  ? bpf_check+0x5461/0x6310
[   38.314520]  __warn.cold.8+0x20/0x45
[   38.318224]  ? rcu_softirq_qs+0x20/0x20
[   38.322186]  ? bpf_check+0x5461/0x6310
[   38.326058]  report_bug+0x254/0x2d0
[   38.329676]  do_error_trap+0x11b/0x200
[   38.333552]  do_invalid_op+0x36/0x40
[   38.337254]  ? bpf_check+0x5461/0x6310
[   38.341127]  invalid_op+0x14/0x20
[   38.344564] RIP: 0010:bpf_check+0x5461/0x6310
[   38.349047] Code: b6 14 02 4c 89 f0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 69 0b 00 00 8b 73 04 48 c7 c7 c0 ca 30 88 44 01 ee e8 4f 14 b9 ff <0f> 0b 48 8b 54 24 08 b8 ff ff 37 00 48 c1 e0 2a 48 c1 ea 03 0f b6
[   38.367942] RSP: 0018:ffff8881c185f980 EFLAGS: 00010286
[   38.373292] RAX: 0000000000000000 RBX: ffffc90005dcd040 RCX: 0000000000000000
[   38.380545] RDX: 0000000000000000 RSI: ffffffff8165e7e5 RDI: 0000000000000005
[   38.387802] RBP: ffff8881c185fb30 R08: ffff8881b3f5e380 R09: ffffed103b5c3ef8
[   38.395058] R10: ffffed103b5c3ef8 R11: ffff8881dae1f7c7 R12: 0000000000000000
[   38.402336] R13: 0000000000000002 R14: ffffc90005dcd044 R15: ffff8881c22fee80
[   38.409612]  ? vprintk_func+0x85/0x181
[   38.413503]  ? fixup_bpf_calls+0x1ca0/0x1ca0
[   38.417900]  ? ktime_get+0x400/0x400
[   38.421615]  ? memset+0x31/0x40
[   38.424879]  ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[   38.430401]  ? bpf_obj_name_cpy+0x17c/0x1c0
[   38.434711]  bpf_prog_load+0x113d/0x1cc0
[   38.438761]  ? bpf_prog_new_fd+0x60/0x60
[   38.442811]  ? __might_fault+0x12b/0x1e0
[   38.446861]  ? lock_downgrade+0x900/0x900
[   38.451001]  ? perf_trace_sched_process_exec+0x860/0x860
[   38.456463]  ? usercopy_warn+0x110/0x110
[   38.460530]  ? __sanitizer_cov_trace_const_cmp8+0x18/0x20
[   38.466055]  __x64_sys_bpf+0x36c/0x520
[   38.469939]  ? bpf_prog_get+0x20/0x20
[   38.473735]  do_syscall_64+0x1b9/0x820
[   38.477609]  ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe
[   38.482978]  ? syscall_return_slowpath+0x5e0/0x5e0
[   38.487894]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   38.492732]  ? trace_hardirqs_on_caller+0x310/0x310
[   38.497735]  ? prepare_exit_to_usermode+0x3b0/0x3b0
[   38.502741]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   38.508265]  ? prepare_exit_to_usermode+0x291/0x3b0
[   38.513267]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   38.518098]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   38.523272] RIP: 0033:0x440159
[   38.526454] 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
[   38.545343] RSP: 002b:00007ffdc559c2b8 EFLAGS: 00000207 ORIG_RAX: 0000000000000141
[   38.553038] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440159
[   38.560291] RDX: 0000000000000048 RSI: 0000000020000000 RDI: 0000000000000005
[   38.567546] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000
[   38.574807] R10: 00000000ffffffff R11: 0000000000000207 R12: 00000000004019e0
[   38.582068] R13: 0000000000401a70 R14: 0000000000000000 R15: 0000000000000000
[   38.590609] Kernel Offset: disabled
[   38.594308] Rebooting in 86400 seconds..