[ 65.907479][ T26] audit: type=1800 audit(1563556620.235:25): pid=9141 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 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. [ 66.839525][ T26] kauditd_printk_skb: 3 callbacks suppressed [ 66.839537][ T26] audit: type=1800 audit(1563556621.165:29): pid=9141 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 [ 66.867082][ T26] audit: type=1800 audit(1563556621.175:30): pid=9141 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 '10.128.1.43' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 78.365663][ T9295] IPVS: ftp: loaded support on port[0] = 21 [ 78.395471][ T9295] BUG: unable to handle page fault for address: ffff8880cdf488ea [ 78.403487][ T9295] #PF: supervisor read access in kernel mode [ 78.409675][ T9295] #PF: error_code(0x0000) - not-present page [ 78.415653][ T9295] PGD b401067 P4D b401067 PUD 0 [ 78.421399][ T9295] Oops: 0000 [#1] PREEMPT SMP KASAN [ 78.426712][ T9295] CPU: 0 PID: 9295 Comm: syz-executor384 Not tainted 5.2.0+ #66 [ 78.434337][ T9295] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.445995][ T9295] RIP: 0010:bpf_prog_9e69188709424cd0+0xa95/0x1000 [ 78.452666][ T9295] Code: cc cc cc 55 48 89 e5 48 81 ec 00 00 00 00 53 41 55 41 56 41 57 6a 00 31 c0 48 8b bf c0 00 00 00 44 8b 97 bc 00 00 00 4c 01 d7 <48> 0f b7 7f 06 5b 41 5f 41 5e 41 5d 5b c9 c3 cc cc cc cc cc cc cc [ 78.473129][ T9295] RSP: 0018:ffff8880a8ce7a98 EFLAGS: 00010286 [ 78.479472][ T9295] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: dffffc0000000000 [ 78.488137][ T9295] RDX: 0000000000000000 RSI: ffffc90005de5038 RDI: ffff8880cdf488e4 [ 78.498477][ T9295] RBP: ffff8880a8ce7ac0 R08: ffff8880a1ef62c0 R09: 0000000000000000 [ 78.506709][ T9295] R10: 00000000316abb64 R11: 0000000000000000 R12: 0000000000000001 [ 78.516296][ T9295] R13: 0000000000000000 R14: ffff8880a8ce7ba8 R15: ffff8880a1ef62c0 [ 78.524331][ T9295] FS: 0000555556cc3940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 78.533487][ T9295] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.541370][ T9295] CR2: ffff8880cdf488ea CR3: 000000008f9e4000 CR4: 00000000001406f0 [ 78.549541][ T9295] Call Trace: [ 78.552845][ T9295] bpf_test_run+0x31f/0xac0 [ 78.557479][ T9295] ? copy_overflow+0x30/0x30 [ 78.562294][ T9295] ? __build_skb+0x58/0x70 [ 78.566838][ T9295] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 78.573354][ T9295] bpf_prog_test_run_skb+0x939/0x1310 [ 78.579496][ T9295] ? bpf_test_init.isra.0+0x100/0x100 [ 78.585657][ T9295] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 78.592032][ T9295] ? bpf_prog_add+0x69/0xd0 [ 78.596850][ T9295] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 78.603942][ T9295] ? __bpf_prog_get+0x97/0x290 [ 78.610713][ T9295] ? bpf_test_init.isra.0+0x100/0x100 [ 78.616111][ T9295] __do_sys_bpf+0x15b4/0x42f0 [ 78.620999][ T9295] ? bpf_prog_load+0x1670/0x1670 [ 78.626573][ T9295] ? lock_downgrade+0x920/0x920 [ 78.631724][ T9295] ? __kasan_check_write+0x14/0x20 [ 78.636953][ T9295] ? up_read+0x159/0x570 [ 78.641486][ T9295] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 78.647064][ T9295] ? do_syscall_64+0x26/0x6a0 [ 78.651741][ T9295] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 78.657871][ T9295] ? do_syscall_64+0x26/0x6a0 [ 78.662560][ T9295] __x64_sys_bpf+0x73/0xb0 [ 78.666990][ T9295] do_syscall_64+0xfd/0x6a0 [ 78.672389][ T9295] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 78.678294][ T9295] RIP: 0033:0x441969 [ 78.682194][ T9295] 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 bb 10 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 78.703821][ T9295] RSP: 002b:00007ffc9b8ad258 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 78.713252][ T9295] RAX: ffffffffffffffda RBX: 00000000004a3030 RCX: 0000000000441969 [ 78.721649][ T9295] RDX: 0000000000000028 RSI: 0000000020000040 RDI: 000000000000000a [ 78.729942][ T9295] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 78.738021][ T9295] R10: 0000000000000015 R11: 0000000000000246 R12: 0000000000402eb0 [ 78.749656][ T9295] R13: 0000000000402f40 R14: 0000000000000000 R15: 0000000000000000 [ 78.757962][ T9295] Modules linked in: [ 78.762273][ T9295] CR2: ffff8880cdf488ea [ 78.766807][ T9295] ---[ end trace 6c038cf0c8059e99 ]--- [ 78.772283][ T9295] RIP: 0010:bpf_prog_9e69188709424cd0+0xa95/0x1000 [ 78.779028][ T9295] Code: cc cc cc 55 48 89 e5 48 81 ec 00 00 00 00 53 41 55 41 56 41 57 6a 00 31 c0 48 8b bf c0 00 00 00 44 8b 97 bc 00 00 00 4c 01 d7 <48> 0f b7 7f 06 5b 41 5f 41 5e 41 5d 5b c9 c3 cc cc cc cc cc cc cc [ 78.799633][ T9295] RSP: 0018:ffff8880a8ce7a98 EFLAGS: 00010286 [ 78.805707][ T9295] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: dffffc0000000000 [ 78.813753][ T9295] RDX: 0000000000000000 RSI: ffffc90005de5038 RDI: ffff8880cdf488e4 [ 78.821939][ T9295] RBP: ffff8880a8ce7ac0 R08: ffff8880a1ef62c0 R09: 0000000000000000 [ 78.830013][ T9295] R10: 00000000316abb64 R11: 0000000000000000 R12: 0000000000000001 [ 78.838741][ T9295] R13: 0000000000000000 R14: ffff8880a8ce7ba8 R15: ffff8880a1ef62c0 [ 78.848196][ T9295] FS: 0000555556cc3940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 78.858404][ T9295] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.865096][ T9295] CR2: ffff8880cdf488ea CR3: 000000008f9e4000 CR4: 00000000001406f0 [ 78.873336][ T9295] Kernel panic - not syncing: Fatal exception [ 78.880929][ T9295] Kernel Offset: disabled [ 78.885418][ T9295] Rebooting in 86400 seconds..