FYI, we noticed the below changes on git://internal_merge_and_test_tree revert-13a662d1648a4241f1969a595b028e32dc47b51c-82f039047282e90f2692a21271666632abe1e075 commit 13a662d1648a4241f1969a595b028e32dc47b51c ("Btrfs: warn_on for unaccounted spaces") +---------------------------------------------------------------------+------------+------------+ | | 8443216ce3 | 13a662d164 | +---------------------------------------------------------------------+------------+------------+ | boot_successes | 5 | 18 | | boot_failures | 2 | 3 | | invoked_oom-killer:gfp_mask=0x | 1 | | | Mem-Info | 1 | | | Out_of_memory:Kill_process | 1 | | | backtrace:vfs_read | 1 | | | backtrace:SyS_read | 1 | | | backtrace:vfs_write | 1 | | | backtrace:SyS_write | 1 | | | backtrace:_do_fork | 1 | | | backtrace:SyS_clone | 1 | | | backtrace:vfs_fallocate | 1 | | | backtrace:SyS_fallocate | 1 | | | INFO:rcu_sched_detected_stalls_on_CPUs/tasks | 1 | | | BUG:kernel_test_crashed | 0 | 1 | | WARNING:at_fs/btrfs/extent-tree.c:#btrfs_free_block_groups[btrfs]() | 0 | 2 | +---------------------------------------------------------------------+------------+------------+ <6>[ 140.931789] BTRFS: creating UUID tree <6>[ 141.131875] BTRFS info (device sda6): qgroup scan completed (inconsistency flag cleared) <4>[ 141.806064] ------------[ cut here ]------------ <4>[ 141.812022] WARNING: CPU: 3 PID: 2933 at fs/btrfs/extent-tree.c:9752 btrfs_free_block_groups+0x26f/0x3f0 [btrfs]() <4>[ 141.826535] Modules linked in: loop dm_mod rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver netconsole btrfs xor raid6_pq sg sd_mod snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic ata_generic pata_acpi x86_pkg_temp_thermal coretemp kvm_intel kvm crct10dif_pclmul eeepc_wmi crc32_pclmul asus_wmi crc32c_intel sparse_keymap ghash_clmulni_intel rfkill ppdev aesni_intel snd_hda_intel snd_hda_codec snd_hda_core i915 drm_kms_helper lrw gf128mul glue_helper syscopyarea ablk_helper pata_via sysfillrect sysimgblt cryptd snd_hwdep pcspkr snd_pcm microcode serio_raw fb_sys_fops ata_piix snd_timer snd libata soundcore drm shpchp wmi parport_pc parport tpm_infineon video <4>[ 141.894332] CPU: 3 PID: 2933 Comm: umount Not tainted 4.3.0-rc5-00148-g13a662d #1 <4>[ 141.902919] Hardware name: System manufacturer System Product Name/P8H67-M PRO, BIOS 1002 04/01/2011 <47> [ 141.903340] systemd-journald[125]: Compressed data object 673 -> 504 <4>[ 141.920519] ffffffffa080e930 ffff88007d53fcf8 ffffffff814028b2 0000000000000000 <4>[ 141.928987] ffff88007d53fd30 ffffffff81074726 ffff8801a6902000 ffff8801a6902088 <4>[ 141.937413] ffff8801a6a04080 ffff8801a6a04000 ffff8801a6a04090 ffff88007d53fd40 <4>[ 141.945820] Call Trace: <4>[ 141.949195] [] dump_stack+0x4b/0x69 <4>[ 141.955254] [] warn_slowpath_common+0x86/0xc0 <4>[ 141.962155] [] warn_slowpath_null+0x1a/0x20 <4>[ 141.968872] [] btrfs_free_block_groups+0x26f/0x3f0 [btrfs] <4>[ 141.976875] [] close_ctree+0x190/0x370 [btrfs] <4>[ 141.983823] [] ? evict_inodes+0x16a/0x180 <4>[ 141.990317] [] btrfs_put_super+0x19/0x20 [btrfs] <4>[ 141.997408] [] generic_shutdown_super+0x6a/0x100 <4>[ 142.004491] [] kill_anon_super+0x12/0x20 <4>[ 142.010866] [] btrfs_kill_super+0x18/0x120 [btrfs] <4>[ 142.018094] [] deactivate_locked_super+0x43/0x70 <4>[ 142.025135] [] deactivate_super+0x5c/0x60 <4>[ 142.031533] [] cleanup_mnt+0x3f/0x90 <4>[ 142.037484] [] __cleanup_mnt+0x12/0x20 <4>[ 142.043596] [] task_work_run+0x76/0xb0 <4>[ 142.049712] [] prepare_exit_to_usermode+0xc7/0x110 <4>[ 142.056844] [] syscall_return_slowpath+0x55/0x160 <4>[ 142.063895] [] int_ret_from_sys_call+0x25/0x8f <4>[ 142.070673] ---[ end trace 171ab39315b5f6b5 ]--- <6>[ 142.075982] BTRFS: space_info 1 has 3080192 free, is not full To reproduce: git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml Thanks, Ying Huang