Hey Kent!
bcachefs master seems to be particularly unstable at the moment. This
crash occurs after only a small amount of data is written to a freshy
formatted bcachefs volume (encryption, lz4, 3 devices, 2 HDDs in the
background group, 1 SSD in the promote/foreground group).
[ 652.580096] bcachefs (9bd0313c-696a-4104-97cf-376ed4f892ee):
initializing new filesystem
[ 666.533929] EXT4-fs (sdb1): mounted filesystem with ordered data
mode. Opts: (null)
[ 670.522954] FAT-fs (sda1): Volume was not properly unmounted. Some
data may be corrupt. Please run fsck.
[ 703.327624] ------------[ cut here ]------------
[ 703.327625] disk usage increased without a reservation
[ 703.327633] WARNING: CPU: 6 PID: 1999 at fs/bcachefs/buckets.c:333
bch2_fs_usage_apply+0x26f/0x280
[ 703.327634] Modules linked in: nls_iso8859_1 xfs jfs btrfs raid10
raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx
raid1 raid0 multipath linear scsi_dh_emc scsi_dh_rdac scsi_dh_alua
scsi_dh_hp_sw ghash_clmulni_intel pcbc iwlwifi aesni_intel aes_x86_64
nvme crypto_simd cfg80211 cryptd glue_helper uas ahci nvme_core r8169
usb_storage libahci
[ 703.327649] CPU: 6 PID: 1999 Comm: kworker/6:1H Not tainted
4.19.0+bcachefs.git20181203.0bd7367c-1-generic #0
[ 703.327650] Hardware name: System76 Oryx Pro/ Oryx Pro, BIOS
1.05.02dRSA2 02/20/2017
[ 703.327653] Workqueue: bcachefs bch2_write_index
[ 703.327654] RIP: 0010:bch2_fs_usage_apply+0x26f/0x280
[ 703.327655] Code: f0 4c 29 ab 78 18 00 00 4c 89 f6 e9 3d fe ff ff 48
c7 c7 80 9d b4 a3 48 89 95 88 fe ff ff c6 05 05 54 43 01 01 e8 93 4f c8
ff <0f> 0b 48 8b 95 88 fe ff ff eb cb e8 31 4c c8 ff 90 0f 1f 44 00 00
[ 703.327656] RSP: 0018:ffffa0e4463cf600 EFLAGS: 00010286
[ 703.327657] RAX: 0000000000000000 RBX: ffff92b5d5ba0000 RCX:
0000000000000006
[ 703.327657] RDX: 0000000000000007 RSI: 0000000000000082 RDI:
ffff92b5e6996420
[ 703.327658] RBP: ffffa0e4463cf778 R08: 0000000000000000 R09:
0000000000000345
[ 703.327658] R10: 00000200ce2e1da6 R11: 0000000000000000 R12:
ffffa0e4463cf808
[ 703.327659] R13: 0000000000000038 R14: 0000000000000000 R15:
ffff92b5d5ba0000
[ 703.327660] FS: 0000000000000000(0000) GS:ffff92b5e6980000(0000)
knlGS:0000000000000000
[ 703.327661] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 703.327661] CR2: 000055b38d734278 CR3: 0000000298a0a004 CR4:
00000000003606e0
[ 703.327662] Call Trace:
[ 703.327665] bch2_mark_update+0x2b9/0x5b0
[ 703.327667] do_btree_insert_at+0x177/0xbb0
[ 703.327669] ? bch2_extent_mark_replicas_cached+0x125/0x340
[ 703.327670] __bch2_btree_insert_at+0xfa/0x800
[ 703.327671] bch2_migrate_index_update+0x6c0/0x980
[ 703.327674] ? ata_scsi_queuecmd+0xad/0x210
[ 703.327676] ? __blk_mq_requeue_request+0x7c/0x100
[ 703.327677] ? blk_mq_dispatch_rq_list+0x1da/0x520
[ 703.327679] __bch2_write_index+0x180/0x320
[ 703.327681] bch2_write_index+0x18/0xa0
[ 703.327682] process_one_work+0x20f/0x410
[ 703.327683] worker_thread+0x34/0x400
[ 703.327685] kthread+0x120/0x140
[ 703.327685] ? pwq_unbound_release_workfn+0xd0/0xd0
[ 703.327687] ? kthread_bind+0x40/0x40
[ 703.327688] ret_from_fork+0x35/0x40
[ 703.327689] ---[ end trace d13000b37b755a53 ]---
[ 714.473830] bcachefs (9bd0313c-696a-4104-97cf-376ed4f892ee): invalid
key in journal: spans multiple buckets
[ 714.473830] u64s 9 type 6 4121:256 snap 0 len 128 ver 65555: ptr:
0:31581104 gen 1 crc: c_size 48 size 128 offset 0 nonce 0 csum 3
compress 3 ptr: 2:4442680 gen 1 cached i, exiting
[ 714.473831] bcachefs (9bd0313c-696a-4104-97cf-376ed4f892ee): Unable
to continue, halting
[ 714.473833] bcachefs (9bd0313c-696a-4104-97cf-376ed4f892ee):
emergency read only
[ 714.473834] bcachefs (9bd0313c-696a-4104-97cf-376ed4f892ee): unable
to write journal to sufficient devices
[ 744.169837] bcachefs (9bd0313c-696a-4104-97cf-376ed4f892ee): IO
error: read only
[ 744.169847] bcachefs (9bd0313c-696a-4104-97cf-376ed4f892ee): IO
error: read only
[ 744.169849] bcachefs (9bd0313c-696a-4104-97cf-376ed4f892ee): IO
error: read only
[ 749.289851] bcachefs (9bd0313c-696a-4104-97cf-376ed4f892ee): IO
error: read only
