[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 64.788145][ T24] audit: type=1800 audit(1583951022.496:25): pid=9371 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 64.821528][ T24] audit: type=1800 audit(1583951022.506:26): pid=9371 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 64.901472][ T24] audit: type=1800 audit(1583951022.506:27): pid=9371 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 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. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.120' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 77.088747][ T9523] ------------[ cut here ]------------ [ 77.094519][ T9523] trace type BPF program uses run-time allocation [ 77.101038][ T9523] WARNING: CPU: 1 PID: 9523 at kernel/bpf/verifier.c:8187 bpf_check+0x6dcb/0xa49b [ 77.110531][ T9523] Kernel panic - not syncing: panic_on_warn set ... [ 77.117131][ T9523] CPU: 1 PID: 9523 Comm: syz-executor700 Not tainted 5.6.0-rc3-syzkaller #0 [ 77.126057][ T9523] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.136103][ T9523] Call Trace: [ 77.139380][ T9523] dump_stack+0x188/0x20d [ 77.143710][ T9523] ? bpf_check+0x6d40/0xa49b [ 77.148282][ T9523] panic+0x2e3/0x75c [ 77.152297][ T9523] ? add_taint.cold+0x16/0x16 [ 77.157200][ T9523] ? __probe_kernel_read+0x188/0x1d0 [ 77.163080][ T9523] ? __warn.cold+0x14/0x35 [ 77.167497][ T9523] ? __warn+0xd5/0x1c8 [ 77.171565][ T9523] ? bpf_check+0x6dcb/0xa49b [ 77.176262][ T9523] __warn.cold+0x2f/0x35 [ 77.180673][ T9523] ? irq_work_queue+0xd2/0x100 [ 77.186812][ T9523] ? bpf_check+0x6dcb/0xa49b [ 77.191565][ T9523] report_bug+0x27b/0x2f0 [ 77.198190][ T9523] do_error_trap+0x12b/0x220 [ 77.202776][ T9523] ? bpf_check+0x6dcb/0xa49b [ 77.207379][ T9523] do_invalid_op+0x32/0x40 [ 77.211802][ T9523] ? bpf_check+0x6dcb/0xa49b [ 77.216538][ T9523] invalid_op+0x23/0x30 [ 77.220701][ T9523] RIP: 0010:bpf_check+0x6dcb/0xa49b [ 77.225890][ T9523] Code: ff 48 8b bd 20 fe ff ff e8 02 56 2c 00 e9 bc cf ff ff e8 88 a0 ef ff 48 c7 c7 c0 8c 11 88 c6 05 c0 c7 de 08 01 e8 bd b3 c1 ff <0f> 0b e9 f3 ae ff ff c7 85 c0 fe ff ff f4 ff ff ff e9 d3 c6 ff ff [ 77.246092][ T9523] RSP: 0018:ffffc90001ec7990 EFLAGS: 00010282 [ 77.252149][ T9523] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 77.260335][ T9523] RDX: 0000000000000000 RSI: ffffffff815bfd81 RDI: fffff520003d8f24 [ 77.269263][ T9523] RBP: ffffc90001ec7b90 R08: ffff88809ae22380 R09: ffffed1015ce45c9 [ 77.277219][ T9523] R10: ffffed1015ce45c8 R11: ffff8880ae722e43 R12: 0000000000000002 [ 77.285185][ T9523] R13: ffffc90000d36048 R14: ffff88809a7d4800 R15: dffffc0000000000 [ 77.293243][ T9523] ? vprintk_func+0x81/0x17e [ 77.297832][ T9523] ? do_check_common+0x9730/0x9730 [ 77.302940][ T9523] ? lock_downgrade+0x7f0/0x7f0 [ 77.307807][ T9523] ? bpf_prog_load+0xd03/0x15f0 [ 77.312649][ T9523] ? ktime_get_with_offset+0x12c/0x360 [ 77.318219][ T9523] ? lockdep_hardirqs_on+0x417/0x5d0 [ 77.323489][ T9523] ? memset+0x20/0x40 [ 77.327474][ T9523] bpf_prog_load+0xd92/0x15f0 [ 77.332143][ T9523] ? bpf_prog_new_fd+0x60/0x60 [ 77.336932][ T9523] ? lock_downgrade+0x7f0/0x7f0 [ 77.341869][ T9523] ? lock_acquire+0x197/0x420 [ 77.347051][ T9523] ? __might_fault+0xef/0x1d0 [ 77.351718][ T9523] ? __might_fault+0x190/0x1d0 [ 77.356507][ T9523] __do_sys_bpf+0x16f2/0x4020 [ 77.361169][ T9523] ? do_page_fault+0x58b/0x12da [ 77.366178][ T9523] ? bpf_raw_tracepoint_open+0x7e0/0x7e0 [ 77.371793][ T9523] ? apply_to_existing_page_range+0x40/0x40 [ 77.377662][ T9523] ? lock_downgrade+0x7f0/0x7f0 [ 77.382515][ T9523] ? up_read+0x1ab/0x750 [ 77.387028][ T9523] ? trace_hardirqs_off_caller+0x55/0x230 [ 77.392822][ T9523] do_syscall_64+0xf6/0x790 [ 77.397323][ T9523] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 77.404843][ T9523] RIP: 0033:0x440539 [ 77.408732][ T9523] 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 [ 77.428967][ T9523] RSP: 002b:00007ffdd65517e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 77.438192][ T9523] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440539 [ 77.446275][ T9523] RDX: 0000000000000014 RSI: 0000000020fed000 RDI: 0000000000000005 [ 77.454335][ T9523] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 77.462311][ T9523] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401dc0 [ 77.470356][ T9523] R13: 0000000000401e50 R14: 0000000000000000 R15: 0000000000000000 [ 77.479909][ T9523] Kernel Offset: disabled [ 77.484288][ T9523] Rebooting in 86400 seconds..