[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 39.578391][ T26] audit: type=1800 audit(1554821799.240:25): pid=7735 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 39.606282][ T26] audit: type=1800 audit(1554821799.250:26): pid=7735 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 39.633002][ T26] audit: type=1800 audit(1554821799.250:27): pid=7735 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 '10.128.10.21' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 48.706777][ T7891] WARNING: CPU: 0 PID: 7891 at fs/attr.c:234 notify_change+0xca2/0xfb0 [ 48.715042][ T7891] Kernel panic - not syncing: panic_on_warn set ... [ 48.721618][ T7891] CPU: 0 PID: 7891 Comm: syz-executor000 Not tainted 5.1.0-rc4-next-20190409 #21 [ 48.730715][ T7891] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.740773][ T7891] Call Trace: [ 48.744052][ T7891] dump_stack+0x172/0x1f0 [ 48.748393][ T7891] ? notify_change+0xca0/0xfb0 [ 48.753142][ T7891] panic+0x2cb/0x72b [ 48.757020][ T7891] ? __warn_printk+0xf3/0xf3 [ 48.761595][ T7891] ? notify_change+0xca2/0xfb0 [ 48.766355][ T7891] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.772575][ T7891] ? __warn.cold+0x5/0x46 [ 48.776901][ T7891] ? __warn+0xe8/0x1d0 [ 48.780953][ T7891] ? notify_change+0xca2/0xfb0 [ 48.785730][ T7891] __warn.cold+0x20/0x46 [ 48.789988][ T7891] ? notify_change+0xca2/0xfb0 [ 48.794750][ T7891] report_bug+0x263/0x2b0 [ 48.799063][ T7891] do_error_trap+0x11b/0x200 [ 48.803633][ T7891] do_invalid_op+0x37/0x50 [ 48.808025][ T7891] ? notify_change+0xca2/0xfb0 [ 48.812769][ T7891] invalid_op+0x14/0x20 [ 48.816904][ T7891] RIP: 0010:notify_change+0xca2/0xfb0 [ 48.822273][ T7891] Code: d4 5b 0a 00 e8 0f cd b6 ff 4c 8b 7c 24 20 4c 89 ff e8 02 b4 4b 01 89 de 4c 89 ff e8 e8 cf 4b 01 e9 33 fa ff ff e8 ee cc b6 ff <0f> 0b e9 42 f4 ff ff e8 e2 cc b6 ff 44 89 f3 4c 89 ea 48 b8 00 00 [ 48.841867][ T7891] RSP: 0018:ffff88808ce374c0 EFLAGS: 00010293 [ 48.847911][ T7891] RAX: ffff8880a7d50580 RBX: 0000000000004200 RCX: ffffffff81b9b042 [ 48.855873][ T7891] RDX: 0000000000000000 RSI: ffffffff81b9bc02 RDI: 0000000000000007 [ 48.863824][ T7891] RBP: ffff88808ce37510 R08: ffff8880a7d50580 R09: ffffed1014a52e45 [ 48.871776][ T7891] R10: ffffed1014a52e44 R11: ffff8880a5297227 R12: ffff88808ce37560 [ 48.879727][ T7891] R13: ffff8880a5297148 R14: 0000000000000000 R15: ffff88808ce375f0 [ 48.887737][ T7891] ? notify_change+0xe2/0xfb0 [ 48.892411][ T7891] ? notify_change+0xca2/0xfb0 [ 48.897159][ T7891] file_remove_privs+0x2a9/0x480 [ 48.902086][ T7891] ? dentry_needs_remove_privs.part.0+0x80/0x80 [ 48.908316][ T7891] ? lock_downgrade+0x880/0x880 [ 48.913148][ T7891] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 48.919379][ T7891] ? kasan_check_read+0x11/0x20 [ 48.924220][ T7891] __generic_file_write_iter+0x15e/0x630 [ 48.929868][ T7891] blkdev_write_iter+0x23a/0x440 [ 48.934794][ T7891] ? __blkdev_get+0x1660/0x1660 [ 48.939630][ T7891] ? current_time+0x6b/0x140 [ 48.944200][ T7891] ? find_held_lock+0x35/0x130 [ 48.948962][ T7891] do_iter_readv_writev+0x5e1/0x8e0 [ 48.954160][ T7891] ? common_file_perm+0x238/0x720 [ 48.959192][ T7891] ? vfs_dedupe_file_range+0x780/0x780 [ 48.964691][ T7891] ? apparmor_file_permission+0x25/0x30 [ 48.970253][ T7891] ? rw_verify_area+0x118/0x360 [ 48.975089][ T7891] do_iter_write+0x184/0x610 [ 48.979667][ T7891] ? rcu_read_lock_sched_held+0x110/0x130 [ 48.985386][ T7891] ? __kmalloc+0x5d5/0x740 [ 48.989809][ T7891] vfs_iter_write+0x77/0xb0 [ 48.994295][ T7891] iter_file_splice_write+0x662/0xbe0 [ 48.999690][ T7891] ? atime_needs_update+0x5f0/0x5f0 [ 49.004879][ T7891] ? page_cache_pipe_buf_confirm+0x2b0/0x2b0 [ 49.010847][ T7891] ? rw_verify_area+0x118/0x360 [ 49.015727][ T7891] ? page_cache_pipe_buf_confirm+0x2b0/0x2b0 [ 49.021692][ T7891] direct_splice_actor+0x126/0x1a0 [ 49.026788][ T7891] splice_direct_to_actor+0x369/0x970 [ 49.032145][ T7891] ? generic_pipe_buf_nosteal+0x10/0x10 [ 49.037687][ T7891] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 49.043906][ T7891] ? do_splice_to+0x190/0x190 [ 49.048569][ T7891] ? rw_verify_area+0x118/0x360 [ 49.053422][ T7891] do_splice_direct+0x1da/0x2a0 [ 49.058260][ T7891] ? splice_direct_to_actor+0x970/0x970 [ 49.063791][ T7891] ? rw_verify_area+0x118/0x360 [ 49.068655][ T7891] do_sendfile+0x597/0xd00 [ 49.073079][ T7891] ? do_compat_pwritev64+0x1c0/0x1c0 [ 49.078348][ T7891] ? __fget_light+0x1a9/0x230 [ 49.083010][ T7891] __x64_sys_sendfile64+0x1dd/0x220 [ 49.088192][ T7891] ? __ia32_sys_sendfile+0x230/0x230 [ 49.093459][ T7891] ? do_syscall_64+0x26/0x610 [ 49.098144][ T7891] ? lockdep_hardirqs_on+0x418/0x5d0 [ 49.103416][ T7891] ? trace_hardirqs_on+0x67/0x230 [ 49.108427][ T7891] do_syscall_64+0x103/0x610 [ 49.113871][ T7891] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 49.119833][ T7891] RIP: 0033:0x4455f9 [ 49.123706][ T7891] Code: e8 ac 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 bb cd fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 49.143293][ T7891] RSP: 002b:00007ffdb7ee3f48 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 49.151690][ T7891] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004455f9 [ 49.159643][ T7891] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000003 [ 49.167613][ T7891] RBP: 000000000000bb7c R08: 00000000004028d0 R09: 00000000004028d0 [ 49.175611][ T7891] R10: 000000000200000d R11: 0000000000000246 R12: 0000000000402840 [ 49.183573][ T7891] R13: 00000000004028d0 R14: 0000000000000000 R15: 0000000000000000 [ 49.192418][ T7891] Kernel Offset: disabled [ 49.196816][ T7891] Rebooting in 86400 seconds..