[ 78.065379][ T27] audit: type=1400 audit(1577302691.627:37): avc: denied { watch } for pid=10134 comm="restorecond" path="/root/.ssh" dev="sda1" ino=16179 scontext=system_u:system_r:kernel_t:s0 tcontext=unconfined_u:object_r:ssh_home_t:s0 tclass=dir permissive=1 [ 78.107973][ T27] audit: type=1400 audit(1577302691.627:38): avc: denied { watch } for pid=10134 comm="restorecond" path="/etc/selinux/restorecond.conf" dev="sda1" ino=2232 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 78.374579][ T27] audit: type=1800 audit(1577302691.937:39): pid=10043 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 78.396325][ T27] audit: type=1800 audit(1577302691.947:40): pid=10043 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 82.583714][ T27] audit: type=1400 audit(1577302696.147:41): avc: denied { map } for pid=10222 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.189' (ECDSA) to the list of known hosts. executing program [ 89.215529][ T27] audit: type=1400 audit(1577302702.777:42): avc: denied { map } for pid=10234 comm="syz-executor431" path="/root/syz-executor431347868" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 89.233424][T10234] ------------[ cut here ]------------ [ 89.245823][ T27] audit: type=1400 audit(1577302702.777:43): avc: denied { associate } for pid=10234 comm="syz-executor431" name="file0" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1 [ 89.248134][T10234] WARNING: CPU: 1 PID: 10234 at fs/overlayfs/file.c:55 ovl_real_fdget_meta+0x4a3/0x540 [ 89.248143][T10234] Kernel panic - not syncing: panic_on_warn set ... [ 89.248158][T10234] CPU: 1 PID: 10234 Comm: syz-executor431 Not tainted 5.5.0-rc3-syzkaller #0 [ 89.248165][T10234] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 89.248170][T10234] Call Trace: [ 89.248185][T10234] dump_stack+0x197/0x210 [ 89.248197][T10234] ? ovl_real_fdget_meta+0x450/0x540 [ 89.248209][T10234] panic+0x2e3/0x75c [ 89.248220][T10234] ? add_taint.cold+0x16/0x16 [ 89.248237][T10234] ? printk+0xba/0xed [ 89.248250][T10234] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 89.248261][T10234] ? __warn.cold+0x14/0x3e [ 89.248271][T10234] ? __warn+0xd9/0x1cf [ 89.248284][T10234] ? ovl_real_fdget_meta+0x4a3/0x540 [ 89.248296][T10234] __warn.cold+0x2f/0x3e [ 89.248307][T10234] ? report_bug.cold+0x63/0xb2 [ 89.248318][T10234] ? ovl_real_fdget_meta+0x4a3/0x540 [ 89.248331][T10234] report_bug+0x289/0x300 [ 89.248347][T10234] do_error_trap+0x11b/0x200 [ 89.248362][T10234] do_invalid_op+0x37/0x50 [ 89.248372][T10234] ? ovl_real_fdget_meta+0x4a3/0x540 [ 89.248385][T10234] invalid_op+0x23/0x30 [ 89.248396][T10234] RIP: 0010:ovl_real_fdget_meta+0x4a3/0x540 [ 89.248409][T10234] Code: ff 4c 89 f7 e8 7e b5 2d ff e9 fb fc ff ff e8 74 b5 2d ff e9 c7 fc ff ff 4c 89 f7 e8 07 b6 2d ff e9 5e fd ff ff e8 9d fc ef fe <0f> 0b 41 bc fb ff ff ff e9 f9 fc ff ff e8 6b b5 2d ff e9 85 fb ff [ 89.248415][T10234] RSP: 0018:ffffc90001cd73e8 EFLAGS: 00010293 [ 89.248425][T10234] RAX: ffff88809e4322c0 RBX: 0000000004048000 RCX: ffffffff82852f26 [ 89.248433][T10234] RDX: 0000000000000000 RSI: ffffffff82853153 RDI: 0000000000000005 [ 89.248440][T10234] RBP: ffffc90001cd7418 R08: ffff88809e4322c0 R09: 0000000000000000 [ 89.248448][T10234] R10: ffffed1013d7c51f R11: ffff88809ebe28ff R12: 000000000000a000 [ 89.248456][T10234] R13: ffff8880a8be1300 R14: ffff8880a8be1378 R15: ffff888090f1f888 [ 89.248475][T10234] ? ovl_real_fdget_meta+0x276/0x540 [ 89.248487][T10234] ? ovl_real_fdget_meta+0x4a3/0x540 [ 89.248504][T10234] ? ovl_real_fdget_meta+0x4a3/0x540 [ 89.248521][T10234] ovl_read_iter+0x11a/0x370 [ 89.248539][T10234] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 89.248553][T10234] ? ovl_mmap+0x300/0x300 [ 89.248573][T10234] ? fsnotify+0xbb0/0xbb0 [ 89.248591][T10234] do_iter_readv_writev+0x711/0x8f0 [ 89.248610][T10234] ? no_seek_end_llseek_size+0x70/0x70 [ 89.248632][T10234] ? rw_verify_area+0x126/0x360 [ 89.248650][T10234] do_iter_read+0x27c/0x660 [ 89.248663][T10234] ? dup_iter+0x260/0x260 [ 89.248693][T10234] vfs_readv+0xf0/0x160 [ 89.248711][T10234] ? compat_rw_copy_check_uvector+0x4c0/0x4c0 [ 89.248726][T10234] ? push_pipe+0x3e2/0x6a0 [ 89.248748][T10234] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 89.248762][T10234] ? iov_iter_get_pages_alloc+0x3a5/0x15b0 [ 89.248783][T10234] ? iov_iter_for_each_range+0x7d0/0x7d0 [ 89.248799][T10234] ? stack_depot_save+0x25a/0x450 [ 89.248816][T10234] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 89.248837][T10234] default_file_splice_read+0x4fb/0xa20 [ 89.248850][T10234] ? kasan_kmalloc+0x9/0x10 [ 89.248862][T10234] ? __kmalloc+0x163/0x770 [ 89.248877][T10234] ? alloc_pipe_info+0x1ee/0x4f0 [ 89.248890][T10234] ? splice_direct_to_actor+0x80e/0xa30 [ 89.248913][T10234] ? iter_file_splice_write+0xc10/0xc10 [ 89.248926][T10234] ? __lock_acquire+0x16f2/0x4a00 [ 89.248938][T10234] ? __lock_acquire+0x16f2/0x4a00 [ 89.248954][T10234] ? __kasan_check_read+0x11/0x20 [ 89.248979][T10234] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 89.248998][T10234] ? fsnotify+0x7fd/0xbb0 [ 89.625213][T10234] ? security_file_permission+0x8f/0x380 [ 89.630836][T10234] ? rw_verify_area+0x126/0x360 [ 89.635667][T10234] ? iter_file_splice_write+0xc10/0xc10 [ 89.641204][T10234] do_splice_to+0x127/0x180 [ 89.645699][T10234] splice_direct_to_actor+0x320/0xa30 [ 89.651138][T10234] ? generic_pipe_buf_nosteal+0x10/0x10 [ 89.656674][T10234] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 89.662902][T10234] ? do_splice_to+0x180/0x180 [ 89.667581][T10234] ? rw_verify_area+0x126/0x360 [ 89.674356][T10234] do_splice_direct+0x1da/0x2a0 [ 89.679565][T10234] ? splice_direct_to_actor+0xa30/0xa30 [ 89.685093][T10234] ? rw_verify_area+0x126/0x360 [ 89.689925][T10234] do_sendfile+0x597/0xd00 [ 89.694375][T10234] ? do_compat_pwritev64+0x1c0/0x1c0 [ 89.699648][T10234] ? do_fcntl+0xb0/0x1030 [ 89.704405][T10234] ? f_getown+0xc0/0xc0 [ 89.709187][T10234] __x64_sys_sendfile64+0x1dd/0x220 [ 89.714388][T10234] ? __ia32_sys_sendfile+0x230/0x230 [ 89.719663][T10234] ? do_syscall_64+0x26/0x790 [ 89.724365][T10234] ? lockdep_hardirqs_on+0x421/0x5e0 [ 89.729660][T10234] ? trace_hardirqs_on+0x67/0x240 [ 89.734669][T10234] do_syscall_64+0xfa/0x790 [ 89.739156][T10234] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 89.745033][T10234] RIP: 0033:0x4402f9 [ 89.748993][T10234] 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 [ 89.768576][T10234] RSP: 002b:00007fffb93f3588 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 89.777156][T10234] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004402f9 [ 89.785135][T10234] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003 [ 89.793282][T10234] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 89.801341][T10234] R10: 0000800000000024 R11: 0000000000000246 R12: 0000000000401b80 [ 89.809303][T10234] R13: 0000000000401c10 R14: 0000000000000000 R15: 0000000000000000 [ 89.818092][T10234] Kernel Offset: disabled [ 89.822492][T10234] Rebooting in 86400 seconds..