[ 42.649239][ T26] audit: type=1800 audit(1548853737.772:25): pid=7917 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 42.687171][ T26] audit: type=1800 audit(1548853737.772:26): pid=7917 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 42.722540][ T26] audit: type=1800 audit(1548853737.772:27): pid=7917 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. [....] startpar: service(s) returned failure: ssh ...[?25l[?1c7[FAIL8[?25h[?0c failed! Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.49' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 55.572822][ T8092] kasan: CONFIG_KASAN_INLINE enabled [ 55.578279][ T8092] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 55.586601][ T8092] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 55.593530][ T8092] CPU: 0 PID: 8092 Comm: syz-executor405 Not tainted 5.0.0-rc4-next-20190130 #22 [ 55.602619][ T8092] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.612660][ T8092] RIP: 0010:relay_open_buf.part.0+0x7cb/0xb40 [ 55.618699][ T8092] Code: c1 ea 03 80 3c 02 00 0f 85 4c 03 00 00 49 8d 7d 58 4d 89 ac 24 90 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 1b 03 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b [ 55.638311][ T8092] RSP: 0018:ffff888088897670 EFLAGS: 00010203 [ 55.644374][ T8092] RAX: dffffc0000000000 RBX: ffff88809f2b3080 RCX: 1ffff110110c6919 [ 55.652324][ T8092] RDX: 0000000000000008 RSI: ffffffff81833b80 RDI: 0000000000000047 [ 55.660277][ T8092] RBP: ffff8880888976e8 R08: 0000000000000006 R09: ffff8880886348c8 [ 55.668224][ T8092] R10: ffff888088634000 R11: 0000000000000000 R12: ffff88809f5ef580 [ 55.676174][ T8092] R13: ffffffffffffffef R14: 0000000000000000 R15: 0000000000000000 [ 55.684128][ T8092] FS: 00000000021c4880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 55.693048][ T8092] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 55.699609][ T8092] CR2: 00000000006cf090 CR3: 00000000a4ccd000 CR4: 00000000001406f0 [ 55.707559][ T8092] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 55.715507][ T8092] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 55.723464][ T8092] Call Trace: [ 55.726759][ T8092] ? kmem_cache_alloc_trace+0x354/0x760 [ 55.732296][ T8092] relay_open+0x5f3/0xaf0 [ 55.736616][ T8092] ? relay_open_buf.part.0+0xb40/0xb40 [ 55.742066][ T8092] ? __debugfs_create_file+0x301/0x400 [ 55.747526][ T8092] ? debugfs_create_file+0x5a/0x70 [ 55.752629][ T8092] do_blk_trace_setup+0x50d/0xdb0 [ 55.757634][ T8092] ? blk_tracer_print_line+0x60/0x60 [ 55.762907][ T8092] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 55.769126][ T8092] ? _copy_from_user+0xdd/0x150 [ 55.773957][ T8092] __blk_trace_setup+0xe3/0x190 [ 55.778784][ T8092] ? do_blk_trace_setup+0xdb0/0xdb0 [ 55.783963][ T8092] ? disk_name+0xae/0x110 [ 55.788272][ T8092] blk_trace_ioctl+0x170/0x300 [ 55.793060][ T8092] ? blk_add_trace_rq_remap+0x6b0/0x6b0 [ 55.798592][ T8092] ? kasan_check_write+0x14/0x20 [ 55.803506][ T8092] ? do_raw_spin_lock+0x156/0x360 [ 55.808503][ T8092] ? lock_release+0xc40/0xc40 [ 55.813157][ T8092] ? rwlock_bug.part.0+0x90/0x90 [ 55.818072][ T8092] blkdev_ioctl+0x141/0x2120 [ 55.822649][ T8092] ? blkpg_ioctl+0xc10/0xc10 [ 55.827218][ T8092] ? __handle_mm_fault+0x955/0x5610 [ 55.832394][ T8092] ? add_lock_to_list.isra.0+0x450/0x450 [ 55.838000][ T8092] ? vmf_insert_mixed_mkwrite+0x40/0x40 [ 55.843518][ T8092] ? check_preemption_disabled+0x48/0x290 [ 55.849216][ T8092] ? __do_page_fault+0x623/0xda0 [ 55.854128][ T8092] ? find_held_lock+0x35/0x120 [ 55.858870][ T8092] ? __do_page_fault+0x623/0xda0 [ 55.863785][ T8092] block_ioctl+0xee/0x130 [ 55.868106][ T8092] ? blkdev_fallocate+0x410/0x410 [ 55.873137][ T8092] do_vfs_ioctl+0x107b/0x17d0 [ 55.877806][ T8092] ? rcu_read_unlock_special+0x380/0x380 [ 55.883422][ T8092] ? ioctl_preallocate+0x2f0/0x2f0 [ 55.888511][ T8092] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 55.894729][ T8092] ? __fget_light+0x2db/0x420 [ 55.899411][ T8092] ? fget_raw+0x20/0x20 [ 55.903544][ T8092] ? up_read_non_owner+0x100/0x100 [ 55.908636][ T8092] ? do_syscall_64+0x8c/0x800 [ 55.913291][ T8092] ? do_syscall_64+0x8c/0x800 [ 55.917943][ T8092] ? lockdep_hardirqs_on+0x418/0x5d0 [ 55.923205][ T8092] ? security_file_ioctl+0x93/0xc0 [ 55.928300][ T8092] ksys_ioctl+0xab/0xd0 [ 55.932443][ T8092] __x64_sys_ioctl+0x73/0xb0 [ 55.937015][ T8092] do_syscall_64+0x1a3/0x800 [ 55.941614][ T8092] ? syscall_return_slowpath+0x5f0/0x5f0 [ 55.947220][ T8092] ? prepare_exit_to_usermode+0x232/0x3b0 [ 55.952917][ T8092] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 55.958442][ T8092] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 55.964314][ T8092] RIP: 0033:0x444af9 [ 55.968185][ T8092] Code: e8 cc ab 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 db ce fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 55.987781][ T8092] RSP: 002b:00007ffd22903da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 55.996167][ T8092] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000444af9 [ 56.004114][ T8092] RDX: 0000000020000040 RSI: 00000000c0481273 RDI: 0000000000000003 [ 56.012060][ T8092] RBP: 000000000000d8fa R08: 00000000021c4880 R09: 00000000004002e0 [ 56.020047][ T8092] R10: 000000000000000f R11: 0000000000000246 R12: 0000000000401e60 [ 56.027995][ T8092] R13: 0000000000401ef0 R14: 0000000000000000 R15: 0000000000000000 [ 56.035945][ T8092] Modules linked in: [ 56.040354][ T8092] ---[ end trace d79fd6b85e15805c ]--- [ 56.045844][ T8092] RIP: 0010:relay_open_buf.part.0+0x7cb/0xb40 [ 56.051899][ T8092] Code: c1 ea 03 80 3c 02 00 0f 85 4c 03 00 00 49 8d 7d 58 4d 89 ac 24 90 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 1b 03 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b [ 56.071521][ T8092] RSP: 0018:ffff888088897670 EFLAGS: 00010203 [ 56.077599][ T8092] RAX: dffffc0000000000 RBX: ffff88809f2b3080 RCX: 1ffff110110c6919 [ 56.085602][ T8092] RDX: 0000000000000008 RSI: ffffffff81833b80 RDI: 0000000000000047 [ 56.093773][ T8092] RBP: ffff8880888976e8 R08: 0000000000000006 R09: ffff8880886348c8 [ 56.101723][ T8092] R10: ffff888088634000 R11: 0000000000000000 R12: ffff88809f5ef580 [ 56.109703][ T8092] R13: ffffffffffffffef R14: 0000000000000000 R15: 0000000000000000 [ 56.117745][ T8092] FS: 00000000021c4880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 56.126726][ T8092] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.133307][ T8092] CR2: 00000000006cf090 CR3: 00000000a4ccd000 CR4: 00000000001406f0 [ 56.141343][ T8092] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 56.149328][ T8092] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 56.157329][ T8092] Kernel panic - not syncing: Fatal exception [ 56.164351][ T8092] Kernel Offset: disabled [ 56.168672][ T8092] Rebooting in 86400 seconds..