[ 29.545702] audit: type=1800 audit(1542221763.585:28): pid=5877 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 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. [ 30.238967] audit: type=1800 audit(1542221764.385:29): pid=5877 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 [ 30.260144] audit: type=1800 audit(1542221764.385:30): pid=5877 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 [ 30.757657] sshd (6012) used greatest stack depth: 15744 bytes left Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.36' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 61.729011] ------------[ cut here ]------------ [ 61.734040] verifier bug. No program starts at insn 7 [ 61.739490] WARNING: CPU: 1 PID: 6034 at kernel/bpf/verifier.c:5880 bpf_check+0x5461/0x6310 [ 61.747967] Kernel panic - not syncing: panic_on_warn set ... [ 61.753842] CPU: 1 PID: 6034 Comm: syz-executor881 Not tainted 4.20.0-rc2+ #184 [ 61.761283] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.770709] Call Trace: [ 61.773290] dump_stack+0x244/0x39d [ 61.776913] ? dump_stack_print_info.cold.1+0x20/0x20 [ 61.782104] panic+0x2ad/0x55c [ 61.785289] ? add_taint.cold.5+0x16/0x16 [ 61.789427] ? __warn.cold.8+0x5/0x45 [ 61.793222] ? __warn+0xe8/0x1d0 [ 61.796580] ? bpf_check+0x5461/0x6310 [ 61.800463] __warn.cold.8+0x20/0x45 [ 61.804167] ? rcu_softirq_qs+0x20/0x20 [ 61.808129] ? bpf_check+0x5461/0x6310 [ 61.812011] report_bug+0x254/0x2d0 [ 61.815632] do_error_trap+0x11b/0x200 [ 61.819509] do_invalid_op+0x36/0x40 [ 61.823210] ? bpf_check+0x5461/0x6310 [ 61.827220] invalid_op+0x14/0x20 [ 61.830662] RIP: 0010:bpf_check+0x5461/0x6310 [ 61.835162] 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 [ 61.854063] RSP: 0018:ffff8881b5b8f980 EFLAGS: 00010286 [ 61.859412] RAX: 0000000000000000 RBX: ffffc90005ddd040 RCX: 0000000000000000 [ 61.866805] RDX: 0000000000000000 RSI: ffffffff8165e7e5 RDI: 0000000000000005 [ 61.874078] RBP: ffff8881b5b8fb30 R08: ffff8881c0cd0580 R09: 0000000000000006 [ 61.881341] R10: 0000000000000000 R11: ffff8881c0cd0580 R12: 0000000000000000 [ 61.888600] R13: 0000000000000002 R14: ffffc90005ddd044 R15: ffff8881c0ebec00 [ 61.895936] ? vprintk_func+0x85/0x181 [ 61.899828] ? fixup_bpf_calls+0x1ca0/0x1ca0 [ 61.904227] ? ktime_get+0x400/0x400 [ 61.907934] ? memset+0x31/0x40 [ 61.911203] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 61.916798] ? bpf_obj_name_cpy+0x17c/0x1c0 [ 61.921116] bpf_prog_load+0x113d/0x1cc0 [ 61.925177] ? bpf_prog_new_fd+0x60/0x60 [ 61.929233] ? __might_fault+0x12b/0x1e0 [ 61.933291] ? lock_downgrade+0x900/0x900 [ 61.937430] ? perf_trace_sched_process_exec+0x860/0x860 [ 61.942873] ? usercopy_warn+0x110/0x110 [ 61.946932] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 61.952458] __x64_sys_bpf+0x36c/0x520 [ 61.956344] ? bpf_prog_get+0x20/0x20 [ 61.960149] do_syscall_64+0x1b9/0x820 [ 61.964029] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 61.969416] ? syscall_return_slowpath+0x5e0/0x5e0 [ 61.974339] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 61.979174] ? trace_hardirqs_on_caller+0x310/0x310 [ 61.984179] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 61.989503] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 61.995036] ? prepare_exit_to_usermode+0x291/0x3b0 [ 62.000068] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 62.004919] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 62.010100] RIP: 0033:0x440159 [ 62.013296] 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 [ 62.032196] RSP: 002b:00007ffffe04ea08 EFLAGS: 00000207 ORIG_RAX: 0000000000000141 [ 62.039939] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440159 [ 62.047204] RDX: 0000000000000048 RSI: 0000000020000000 RDI: 0000000000000005 [ 62.054506] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 62.061770] R10: 00000000ffffffff R11: 0000000000000207 R12: 00000000004019e0 [ 62.069038] R13: 0000000000401a70 R14: 0000000000000000 R15: 0000000000000000 [ 62.077399] Kernel Offset: disabled [ 62.081090] Rebooting in 86400 seconds..