[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.115' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 28.092627] JFS: discard option not supported on device [ 28.094783] JFS: discard option not supported on device [ 28.124092] JFS: discard option not supported on device [ 28.125233] JFS: discard option not supported on device [ 28.140527] JFS: discard option not supported on device [ 28.151357] JFS: discard option not supported on device [ 28.185058] overlayfs: fs on '.' does not support file handles, falling back to index=off. [ 28.185843] overlayfs: fs on '.' does not support file handles, falling back to index=off. [ 28.195290] overlayfs: fs on '.' does not support file handles, falling back to index=off. [ 28.207024] overlayfs: fs on '.' does not support file handles, falling back to index=off. [ 28.216534] overlayfs: fs on '.' does not support file handles, falling back to index=off. [ 28.230159] overlayfs: fs on '.' does not support file handles, falling back to index=off. [ 28.240517] ====================================================== [ 28.240517] WARNING: the mand mount option is being deprecated and [ 28.240517] will be removed in v5.15! [ 28.240517] ====================================================== [ 28.263072] overlayfs: upper fs needs to support d_type. [ 28.267736] overlayfs: failed to create directory ./file1/work (errno: 30); mounting read-only [ 28.278653] overlayfs: upper fs needs to support d_type. [ 28.283410] overlayfs: failed to create directory ./file1/work (errno: 30); mounting read-only [ 28.296878] overlayfs: upper fs does not support tmpfile. [ 28.303691] overlayfs: upper fs needs to support d_type. [ 28.310020] overlayfs: upper fs does not support tmpfile. [ 28.310794] overlayfs: failed to create directory ./file1/work (errno: 30); mounting read-only [ 28.329066] executing program [ 28.330163] overlayfs: upper fs does not support tmpfile. [ 28.330699] ===================================== [ 28.330701] WARNING: bad unlock balance detected! [ 28.330706] 4.14.302-syzkaller #0 Not tainted [ 28.330707] ------------------------------------- [ 28.330711] syz-executor297/7987 is trying to release lock (sb_writers) at: [ 28.330727] [] ovl_workdir_create.cold+0xeb/0xf7 [ 28.330729] but there are no more locks to release! [ 28.330730] [ 28.330730] other info that might help us debug this: [ 28.330734] 1 lock held by syz-executor297/7987: [ 28.330738] #0: (&type->s_umount_key#47/1){+.+.}, at: [] sget_userns+0x556/0xc10 [ 28.394193] [ 28.394193] stack backtrace: [ 28.398685] CPU: 1 PID: 7987 Comm: syz-executor297 Not tainted 4.14.302-syzkaller #0 [ 28.406556] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 28.415908] Call Trace: [ 28.418503] dump_stack+0x1b2/0x281 [ 28.422128] ? ovl_workdir_create.cold+0xeb/0xf7 [ 28.426881] lock_release.cold+0x70/0xbf [ 28.430946] ? lock_downgrade+0x740/0x740 executing program [ 28.435087] ovl_workdir_create.cold+0xeb/0xf7 [ 28.439658] ? clone_private_mount+0x24f/0x2f0 [ 28.444230] ? ovl_mount_dir+0x190/0x190 [ 28.448297] ? lock_downgrade+0x740/0x740 [ 28.452439] ? up_read+0x17/0x30 [ 28.455805] ? clone_private_mount+0x113/0x2f0 [ 28.460382] ovl_fill_super+0xfe9/0x2610 [ 28.464435] ? ovl_put_super+0x4a0/0x4a0 [ 28.468488] ? sget_userns+0x768/0xc10 [ 28.472381] ? get_anon_bdev+0x1c0/0x1c0 [ 28.476426] ? sget+0xd9/0x110 [ 28.479612] ? ovl_put_super+0x4a0/0x4a0 [ 28.483660] mount_nodev+0x4c/0xf0 [ 28.487186] mount_fs+0x92/0x2a0 [ 28.490552] vfs_kern_mount.part.0+0x5b/0x470 [ 28.495037] do_mount+0xe65/0x2a30 [ 28.498564] ? do_raw_spin_unlock+0x164/0x220 [ 28.503049] ? copy_mount_string+0x40/0x40 [ 28.507279] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 28.512288] ? copy_mnt_ns+0xa30/0xa30 [ 28.516168] ? copy_mount_options+0x1fa/0x2f0 [ 28.520652] ? copy_mnt_ns+0xa30/0xa30 [ 28.524525] SyS_mount+0xa8/0x120 [ 28.527963] ? copy_mnt_ns+0xa30/0xa30 [ 28.531842] do_syscall_64+0x1d5/0x640 [ 28.535731] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 28.540917] RIP: 0033:0x7f08cebef299 [ 28.544619] RSP: 002b:00007f08ceb9b2f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 28.552323] RAX: ffffffffffffffda RBX: 00007f08cec797a0 RCX: 00007f08cebef299 [ 28.559578] RDX: 0000000020000080 RSI: 0000000020000040 RDI: 0000000000000000 [ 28.566842] RBP: 00007f08cec46118 R08: 0000000020000340 R09: 0000000000000000 [ 28.574107] R10: 0000000000000000 R11: 0000000000000246 R12: 0031656c69662f2e executing program executing program [ 28.581371] R13: 3d7269647265776f R14: 0079616c7265766f R15: 00007f08cec797a8 executing program executing program [ 28.622141] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program executing program [ 28.795323] overlayfs: filesystem on './bus' not supported as upperdir [ 28.819291] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 28.876660] overlayfs: filesystem on './bus' not supported as upperdir [ 28.879391] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program executing program [ 29.045040] overlayfs: filesystem on './bus' not supported as upperdir [ 29.074511] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 29.151367] overlayfs: filesystem on './bus' not supported as upperdir [ 29.180131] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 29.234991] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 29.405230] overlayfs: filesystem on './bus' not supported as upperdir [ 29.437538] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 29.450117] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 29.498018] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 29.545095] overlayfs: filesystem on './bus' not supported as upperdir [ 29.549696] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program executing program executing program [ 29.773943] overlayfs: filesystem on './bus' not supported as upperdir [ 29.790458] overlayfs: filesystem on './bus' not supported as upperdir [ 29.804716] overlayfs: filesystem on './bus' not supported as upperdir [ 29.815510] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 29.854593] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 29.941212] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 30.093237] overlayfs: filesystem on './bus' not supported as upperdir [ 30.122425] overlayfs: filesystem on './bus' not supported as upperdir [ 30.136083] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program executing program executing program [ 30.154446] overlayfs: filesystem on './bus' not supported as upperdir [ 30.185070] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 30.286893] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program executing program executing program [ 30.453153] overlayfs: filesystem on './bus' not supported as upperdir [ 30.465049] overlayfs: filesystem on './bus' not supported as upperdir [ 30.469586] overlayfs: filesystem on './bus' not supported as upperdir [ 30.477565] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 30.562233] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 30.622721] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 30.731625] overlayfs: filesystem on './bus' not supported as upperdir [ 30.762805] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 30.832741] overlayfs: filesystem on './bus' not supported as upperdir [ 30.844261] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 30.887959] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 30.941407] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 31.014651] overlayfs: filesystem on './bus' not supported as upperdir [ 31.050148] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 31.159797] overlayfs: filesystem on './bus' not supported as upperdir [ 31.190919] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 31.238219] overlayfs: filesystem on './bus' not supported as upperdir [ 31.259763] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 31.332174] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 31.384878] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 31.460897] overlayfs: filesystem on './bus' not supported as upperdir [ 31.493274] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 31.597755] overlayfs: filesystem on './bus' not supported as upperdir [ 31.616359] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 31.642869] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program executing program [ 31.744041] overlayfs: filesystem on './bus' not supported as upperdir [ 31.761209] overlayfs: filesystem on './bus' not supported as upperdir [ 31.775312] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 31.912245] overlayfs: filesystem on './bus' not supported as upperdir [ 31.949809] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 31.971646] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 32.060111] overlayfs: filesystem on './bus' not supported as upperdir [ 32.070534] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 32.124861] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 32.251597] overlayfs: filesystem on './bus' not supported as upperdir [ 32.289164] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program executing program [ 32.335588] overlayfs: filesystem on './bus' not supported as upperdir [ 32.365851] overlayfs: filesystem on './bus' not supported as upperdir [ 32.373304] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 32.478111] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 32.587103] overlayfs: filesystem on './bus' not supported as upperdir [ 32.616783] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program executing program [ 32.690738] overlayfs: filesystem on './bus' not supported as upperdir [ 32.706792] overlayfs: filesystem on './bus' not supported as upperdir [ 32.719217] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 32.801950] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 32.935654] overlayfs: filesystem on './bus' not supported as upperdir [ 32.973058] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program executing program [ 33.015108] overlayfs: filesystem on './bus' not supported as upperdir [ 33.045309] overlayfs: filesystem on './bus' not supported as upperdir [ 33.054158] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 33.092425] overlayfs: filesystem on './bus' not supported as upperdir [ 33.296797] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program executing program executing program [ 33.339984] overlayfs: filesystem on './bus' not supported as upperdir [ 33.349604] overlayfs: filesystem on './bus' not supported as upperdir [ 33.354096] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 33.392295] overlayfs: filesystem on './bus' not supported as upperdir [ 33.410992] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 33.640071] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program executing program [ 33.681065] overlayfs: filesystem on './bus' not supported as upperdir [ 33.688695] overlayfs: filesystem on './bus' not supported as upperdir [ 33.691316] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 33.755255] overlayfs: filesystem on './bus' not supported as upperdir [ 33.785249] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program executing program [ 33.954881] overlayfs: filesystem on './bus' not supported as upperdir [ 33.966261] overlayfs: filesystem on './bus' not supported as upperdir [ 33.979398] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 34.045944] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 34.088568] overlayfs: filesystem on './bus' not supported as upperdir [ 34.115658] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 34.266098] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 34.333348] overlayfs: filesystem on './bus' not supported as upperdir [ 34.359977] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program executing program executing program [ 34.379022] overlayfs: filesystem on './bus' not supported as upperdir [ 34.387805] overlayfs: filesystem on './bus' not supported as upperdir [ 34.405480] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 34.595927] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 34.669857] overlayfs: filesystem on './bus' not supported as upperdir [ 34.684329] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 34.717449] overlayfs: filesystem on './bus' not supported as upperdir [ 34.731172] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 34.761030] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 34.911710] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program executing program [ 35.018827] overlayfs: filesystem on './bus' not supported as upperdir [ 35.022271] overlayfs: filesystem on './bus' not supported as upperdir [ 35.038528] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 35.081794] overlayfs: filesystem on './bus' not supported as upperdir [ 35.095683] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 35.261784] overlayfs: filesystem on './bus' not supported as upperdir [ 35.270892] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 35.340754] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program executing program [ 35.395623] overlayfs: filesystem on './bus' not supported as upperdir [ 35.420719] overlayfs: filesystem on './bus' not supported as upperdir [ 35.435969] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 35.589908] overlayfs: filesystem on './bus' not supported as upperdir [ 35.596425] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 35.666670] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 35.709429] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 35.768982] overlayfs: filesystem on './bus' not supported as upperdir [ 35.785994] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 35.950353] overlayfs: filesystem on './bus' not supported as upperdir [ 35.963997] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 36.004589] overlayfs: filesystem on './bus' not supported as upperdir [ 36.024590] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 36.118487] overlayfs: filesystem on './bus' not supported as upperdir [ 36.144754] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 36.282842] overlayfs: filesystem on './bus' not supported as upperdir [ 36.299868] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program executing program [ 36.345418] overlayfs: filesystem on './bus' not supported as upperdir [ 36.354299] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 36.474833] overlayfs: filesystem on './bus' not supported as upperdir [ 36.481957] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 36.617305] overlayfs: filesystem on './bus' not supported as upperdir [ 36.633487] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 36.689565] overlayfs: filesystem on './bus' not supported as upperdir [ 36.714135] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 36.794127] overlayfs: filesystem on './bus' not supported as upperdir [ 36.824164] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 36.944018] overlayfs: filesystem on './bus' not supported as upperdir [ 36.956992] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 37.024160] overlayfs: filesystem on './bus' not supported as upperdir [ 37.037109] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program executing program [ 37.137504] overlayfs: filesystem on './bus' not supported as upperdir [ 37.154798] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 37.255745] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 37.323880] overlayfs: filesystem on './bus' not supported as upperdir [ 37.341056] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 37.384864] overlayfs: filesystem on './bus' not supported as upperdir [ 37.422032] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 37.512538] overlayfs: filesystem on './bus' not supported as upperdir [ 37.533174] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 37.629099] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 37.683674] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 37.726818] overlayfs: filesystem on './bus' not supported as upperdir [ 37.751912] overlayfs: filesystem on './bus' not supported as upperdir executing program [ 37.863409] overlayfs: filesystem on './bus' not supported as upperdir [ 37.873920] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 37.926475] overlayfs: filesystem on './bus' not supported as upperdir [ 38.015672] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 38.057376] overlayfs: filesystem on './bus' not supported as upperdir [ 38.092388] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 38.147209] overlayfs: filesystem on './bus' not supported as upperdir executing program executing program [ 38.222444] overlayfs: filesystem on './bus' not supported as upperdir [ 38.229922] overlayfs: filesystem on './bus' not supported as upperdir