[ 47.682825][ T26] audit: type=1800 audit(1560932419.746:25): pid=7888 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 47.716510][ T26] audit: type=1800 audit(1560932419.756:26): pid=7888 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 47.745766][ T26] audit: type=1800 audit(1560932419.756:27): pid=7888 uid=0 auid=4294967295 ses=4294967295 subj=_ 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. [....] startpar: service(s) returned failure: ssh ...[?25l[?1c7[FAIL8[?25h[?0c failed! Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.15.192' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 72.358938][ T8062] kasan: CONFIG_KASAN_INLINE enabled [ 72.364285][ T8062] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 72.372519][ T8062] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 72.379711][ T8062] CPU: 1 PID: 8062 Comm: syz-executor120 Not tainted 5.2.0-rc5+ #3 [ 72.387666][ T8062] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.397969][ T8062] RIP: 0010:btf_struct_resolve+0x42d/0xfc0 [ 72.403762][ T8062] Code: e8 03 42 80 3c 28 00 4d 89 e7 74 08 48 89 df e8 a9 5b 25 00 4c 8b 23 49 8d 5c 24 04 48 89 d8 48 c1 e8 03 48 89 85 68 ff ff ff <42> 0f b6 04 28 84 c0 48 8b 55 c8 0f 85 19 04 00 00 4c 8d 6a fc 48 [ 72.423892][ T8062] RSP: 0018:ffff88809b8675f0 EFLAGS: 00010247 [ 72.429941][ T8062] RAX: 0000000000000000 RBX: 0000000000000004 RCX: ffff88809d5b25c0 [ 72.437900][ T8062] RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000001 [ 72.445857][ T8062] RBP: ffff88809b867690 R08: ffffffff81897f28 R09: fffffbfff1178ed9 [ 72.453992][ T8062] R10: fffffbfff1178ed9 R11: 1ffffffff1178ed8 R12: 0000000000000000 [ 72.462057][ T8062] R13: dffffc0000000000 R14: ffff8880a8e180c0 R15: ffff88809aa84ac0 [ 72.470203][ T8062] FS: 00005555566b8880(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 [ 72.501420][ T8062] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 72.508033][ T8062] CR2: 0000000020000100 CR3: 00000000a8495000 CR4: 00000000001406e0 [ 72.516133][ T8062] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 72.524210][ T8062] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 72.532255][ T8062] Call Trace: [ 72.535540][ T8062] btf_resolve+0x3ed/0xda0 [ 72.539937][ T8062] ? btf_sec_info_cmp+0x110/0x110 [ 72.545134][ T8062] ? kasan_kmalloc+0x9/0x10 [ 72.549882][ T8062] ? __kmalloc_node+0x4d/0x60 [ 72.554589][ T8062] btf_new_fd+0x216a/0x37b0 [ 72.559141][ T8062] ? __might_fault+0xf9/0x160 [ 72.563810][ T8062] ? btf_release+0xd0/0xd0 [ 72.568434][ T8062] __do_sys_bpf+0x1212/0xc5d0 [ 72.573104][ T8062] ? pagevec_lru_move_fn+0x1f5/0x270 [ 72.578668][ T8062] ? lru_add_page_tail+0x1140/0x1140 [ 72.584188][ T8062] ? check_preemption_disabled+0xb7/0x280 [ 72.589895][ T8062] ? __bpf_prog_put_rcu+0x320/0x320 [ 72.595306][ T8062] ? trace_hardirqs_on+0x74/0x80 [ 72.600375][ T8062] ? do_huge_pmd_anonymous_page+0x1356/0x1940 [ 72.606587][ T8062] ? thp_get_unmapped_area+0xa0/0xa0 [ 72.612018][ T8062] ? handle_mm_fault+0x10b2/0x6130 [ 72.617137][ T8062] ? finish_fault+0x220/0x220 [ 72.622107][ T8062] ? kasan_check_write+0x14/0x20 [ 72.627161][ T8062] ? check_preemption_disabled+0xb7/0x280 [ 72.633034][ T8062] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 72.638650][ T8062] ? trace_irq_disable_rcuidle+0x23/0x1c0 [ 72.644521][ T8062] ? do_syscall_64+0x1d/0x140 [ 72.649366][ T8062] __x64_sys_bpf+0x7a/0x90 [ 72.653779][ T8062] do_syscall_64+0xfe/0x140 [ 72.658484][ T8062] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 72.664367][ T8062] RIP: 0033:0x4401f9 [ 72.668239][ T8062] 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 [ 72.688194][ T8062] RSP: 002b:00007ffe267d07b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 72.696608][ T8062] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401f9 [ 72.704937][ T8062] RDX: 0000000000000020 RSI: 0000000020000100 RDI: 0000000000000012 [ 72.713007][ T8062] RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 [ 72.721145][ T8062] R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000401a80 [ 72.729216][ T8062] R13: 0000000000401b10 R14: 0000000000000000 R15: 0000000000000000 [ 72.737179][ T8062] Modules linked in: [ 72.741411][ T8062] ---[ end trace b2ff400ac9e08111 ]--- [ 72.747525][ T8062] RIP: 0010:btf_struct_resolve+0x42d/0xfc0 [ 72.753427][ T8062] Code: e8 03 42 80 3c 28 00 4d 89 e7 74 08 48 89 df e8 a9 5b 25 00 4c 8b 23 49 8d 5c 24 04 48 89 d8 48 c1 e8 03 48 89 85 68 ff ff ff <42> 0f b6 04 28 84 c0 48 8b 55 c8 0f 85 19 04 00 00 4c 8d 6a fc 48 [ 72.773599][ T8062] RSP: 0018:ffff88809b8675f0 EFLAGS: 00010247 [ 72.779714][ T8062] RAX: 0000000000000000 RBX: 0000000000000004 RCX: ffff88809d5b25c0 [ 72.787756][ T8062] RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000001 [ 72.795767][ T8062] RBP: ffff88809b867690 R08: ffffffff81897f28 R09: fffffbfff1178ed9 [ 72.803872][ T8062] R10: fffffbfff1178ed9 R11: 1ffffffff1178ed8 R12: 0000000000000000 [ 72.811923][ T8062] R13: dffffc0000000000 R14: ffff8880a8e180c0 R15: ffff88809aa84ac0 [ 72.820077][ T8062] FS: 00005555566b8880(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 [ 72.829091][ T8062] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 72.835745][ T8062] CR2: 0000000020000100 CR3: 00000000a8495000 CR4: 00000000001406e0 [ 72.843839][ T8062] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 72.851878][ T8062] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 72.859896][ T8062] Kernel panic - not syncing: Fatal exception [ 72.867517][ T8062] Kernel Offset: disabled [ 72.871847][ T8062] Rebooting in 86400 seconds..