syzbot


Applied filters: Label=subsystems:bcachefs (drop)
Title Repro Cause bisect Fix bisect Count Last Reported Patched Closed Patch
kernel BUG in bch2_btree_path_traverse_one bcachefs C done 9 12d 46d 1/28 never bcachefs: Guard against backpointers to unknown btrees
general protection fault in bch2_btree_path_traverse_one bcachefs C done 145 now 58d 1/28 never bcachefs: Fix null ptr deref in btree_path_lock_root() bcachefs: Ignore empty btree root journal entries
kernel BUG in bch2_btree_write_buffer_flush_locked bcachefs C done 23 2h28m 55d 1/28 never bcachefs: Guard against journal seq overflow
INFO: task hung in __writeback_inodes_sb_nr (6) bcachefs C done 3246 1h38m 554d 1/28 never PM: hibernate: Fix block device handling in test_resume mode
kernel BUG in __bch2_trans_commit bcachefs C unreliable 11858 37d 62d 1/28 never bcachefs: -o norecovery now bails out of recovery earlier
kernel BUG in bch2_journal_noflush_seq bcachefs C done done 333 5h05m 164d 1/28 never bcachefs: Check for bucket journal seq in the future
kernel BUG in bch2_rechecksum_bio bcachefs C 4 33d 44d 1/28 never bcachefs: Check for extent crc uncompressed/compressed size mismatch
WARNING in bch2_journal_flush_seq_async bcachefs C 23 14d 95d 1/28 never bcachefs: Check for inode journal seq in the future
kernel BUG in bch2_bio_compress (2) bcachefs C 4 30d 38d 1/28 never bcachefs: Don't BUG_ON() when superblock feature wasn't set for compressed data
possible deadlock in bch2_alloc_sectors_start_trans bcachefs C inconclusive 64 18d 40d 1/28 never bcachefs: Don't recurse in check_discard_freespace_key
BUG: unable to handle kernel paging request in crypto_skcipher_encrypt bcachefs C 326 9h45m 191d 1/28 never bcachefs: Don't try to en/decrypt when encryption not available
kernel BUG in bch2_btree_pos_to_text (2) bcachefs C 29 9h22m 29d 1/28 never bcachefs: Fix btree node scan when unknown btree IDs are present
kernel BUG in __bch2_btree_node_write bcachefs C 54 16h39m 80d 1/28 never bcachefs: Fix dup/misordered check in btree node read
BUG: corrupted list in bch2_btree_and_journal_iter_exit bcachefs C done 6 4d06h 27d 1/28 never bcachefs: Fix journal_iter list corruption
kernel BUG in __bch2_journal_pin_put bcachefs C 6 13d 27d 1/28 never bcachefs: Guard against journal seq overflow
kernel BUG in bch2_journal_pin_set bcachefs C done 8 4d03h 27d 1/28 never bcachefs: Guard against journal seq overflow
kernel BUG in bch2_btree_node_lock_write bcachefs C done 8 19d 31d 1/28 never bcachefs: Issue a transaction restart after commit in repair
kernel BUG in bch2_btree_root_read bcachefs C 5 22d 30d 1/28 never bcachefs: Kill bch2_bucket_alloc_new_fs()
kernel BUG in bch2_bucket_alloc_trans (3) bcachefs C error 504 45m 33d 1/28 never bcachefs: Kill bch2_bucket_alloc_new_fs()
kernel BUG in bch2_evacuate_bucket bcachefs C done 4 27d 27d 1/28 never bcachefs: Kill bch2_get_next_backpointer()
possible deadlock in __bch2_fsck_err bcachefs 2 14d 15d 1/28 never bcachefs: Kill unnecessary mark_lock usage
kernel BUG in bch2_fs_btree_cache_exit bcachefs C done 2766 34d 65d 27/28 never ca43f73cd172 bcachefs: bch2_btree_write_buffer_flush_going_ro()
kernel BUG in bch2_journal_res_get (2) bcachefs C 1710 34d 58d 27/28 never ca43f73cd172 bcachefs: bch2_btree_write_buffer_flush_going_ro()
kernel BUG in bch2_fs_btree_write_buffer_exit bcachefs C done 6138 34d 85d 27/28 never ca43f73cd172 bcachefs: bch2_btree_write_buffer_flush_going_ro()
possible deadlock in __bch2_trans_relock bcachefs C 40 1d09h 59d 1/28 never bcachefs: bch2_trans_relock() is trylock for lockdep
general protection fault in bch2_checksum bcachefs C done 14 9d18h 158d 1/28 never bcachefs: cryptographic MACs on superblock are not (yet?) supported
kernel BUG in bch2_get_scanned_nodes bcachefs C done 97 18d 24d 1/28 never bcachefs: struct bkey_validate_context
kernel BUG in __bch2_btree_node_hash_insert bcachefs C done 396 34d 43d 28/28 6d06h 0b6ec0c5ac6c bcachefs: Fix assertion pop in topology repair
KASAN: slab-out-of-bounds Read in journal_entry_dev_usage_to_text bcachefs C done 33 35d 145d 28/28 6d06h 657d4282d8c4 bcachefs: Fix journal_entry_dev_usage_to_text() overrun
kernel BUG in __bkey_unpack_pos bcachefs C 4 14d 52d 28/28 6d06h dc537189b5cf bcachefs: Fix validate_bset() repair path
kernel BUG in bch2_trans_node_iter_init bcachefs C done 13 44d 58d 28/28 6d06h f8f1dde68681 bcachefs: Fix missing validation for bch_backpointer.level
kernel BUG in bch2_btree_path_level_init (2) bcachefs C done 29 9d22h 60d 28/28 6d06h f8f1dde68681 bcachefs: Fix missing validation for bch_backpointer.level
kernel BUG in bch2_dev_btree_bitmap_mark bcachefs C done 31 37d 62d 28/28 6d06h 27a036a0c3e7 bcachefs: Fix bch_member.btree_bitmap_shift validation
kernel BUG in bch2_bkey_pack_pos_lossy bcachefs C 7 45d 56d 28/28 6d06h dc537189b5cf bcachefs: Fix validate_bset() repair path
kernel BUG in bch2_run_recovery_pass bcachefs C done 17 38d 58d 28/28 6d06h 2642084f26b5 bcachefs: Allow for unknown key types in backpointers fsck
kernel BUG in bch2_ptr_swab bcachefs C inconclusive 11 43d 60d 28/28 6d06h 840c2fbcc5cd bcachefs: Fix assertion pop in bch2_ptr_swab()
kernel BUG in __bch2_bkey_cmp_packed_format_checked bcachefs C 4 58d 58d 28/28 10d d335bb3fd3a4 bcachefs: Ancient versions with bad bkey_formats are no longer supported
kernel BUG in bch2_bkey_cmp_packed bcachefs C 8 45d 58d 28/28 10d d335bb3fd3a4 bcachefs: Ancient versions with bad bkey_formats are no longer supported
kernel BUG in bch2_inconsistent_error bcachefs C 4 44d 56d 28/28 10d f9f0a5390dce bcachefs: Change OPT_STR max to be 1 less than the size of choices array
KASAN: slab-use-after-free Read in bch2_reconstruct_alloc bcachefs C done 2 55d 60d 28/28 38d 8e910ca20e11 bcachefs: Fix UAF in bch2_reconstruct_alloc()
kernel BUG in bch2_bucket_alloc_trans (2) bcachefs C done 103 38d 66d 28/28 38d 3fd27e9c57bf bcachefs: init freespace inited bits to 0 in bch2_fs_initialize
KASAN: null-ptr-deref Read in bch2_sb_set_upgrade_extra bcachefs C 2 64d 60d 28/28 38d a25a83de45b4 bcachefs: fix null-ptr-deref in have_stripes()
general protection fault in btree_node_iter_and_journal_peek bcachefs C 3 61d 83d 28/28 38d 3726a1970bd7 bcachefs: Fix NULL ptr dereference in btree_node_iter_and_journal_peek
UBSAN: shift-out-of-bounds in bch2_alloc_to_text bcachefs C 29 50d 62d 28/28 38d 5c41f75d1b92 bcachefs: fix shift oob in alloc_lru_idx_fragmentation
UBSAN: shift-out-of-bounds in validate_sb_layout bcachefs C done 7 51d 60d 28/28 38d 2045fc4295c4 bcachefs: Fix invalid shift in validate_sb_layout()
possible deadlock in bch2_replicas_entry_validate bcachefs C done 9468 61d 79d 28/28 39d bf4baaa087e2 bcachefs: Fix lockdep splat in bch2_accounting_read
kernel BUG in bch2_btree_pos_to_text bcachefs C 8 42d 91d 28/28 39d 0151d10a480d bcachefs: add check for btree id against max in try read node
general protection fault in prt_str bcachefs C done 2 82d 97d 28/28 39d a30f32222df2 bcachefs: Fix NULL pointer dereference in bch2_opt_to_text
general protection fault in bch2_alloc_read bcachefs C 7 80d 87d 28/28 39d a319aeaebb6c bcachefs: Fix missing bounds checks in bch2_alloc_read()
UBSAN: shift-out-of-bounds in bch2_stripe_to_text bcachefs C 3 91d 87d 28/28 39d 9f25dbe0bf91 bcachefs: Add missing validation for bch_stripe.csum_granularity_bits
UBSAN: shift-out-of-bounds in member_to_text bcachefs C 12 66d 110d 28/28 39d c1bd21bb6518 bcachefs: Fix invalid shift in member_to_text()
KASAN: slab-use-after-free Read in bch2_direct_write bcachefs 11 84d 86d 28/28 39d 573ddcdc5607 bcachefs: fix uaf in bch2_dio_write_done()
WARNING in __bch2_fsck_err (2) bcachefs C 3 79d 75d 28/28 59d 5612daafb764 bcachefs: Fix fsck warnings from bkey validation
general protection fault in bch2_fs_recovery bcachefs C 10 84d 103d 28/28 61d 025c55a4c7f1 bcachefs: return err ptr instead of null in read sb clean
kernel BUG in vfs_get_tree bcachefs C done 318 79d 122d 28/28 61d b29c30ab48e0 bcachefs: Fix incorrect IS_ERR_OR_NULL usage
KMSAN: uninit-value in bch2_bkey_cmp_packed_inlined bcachefs C 7 84d 104d 28/28 61d 0696a18a8cc3 bcachefs: memset bounce buffer portion to 0 after key_sort_fix_overlapping
WARNING: suspicious RCU usage in bch2_snapshot_tree_oldest_subvol bcachefs C 21 84d 95d 28/28 61d 39c3aad43f6f bcachefs: Hold read lock in bch2_snapshot_tree_oldest_subvol()
general protection fault in __copy_super bcachefs C done 5 89d 92d 28/28 61d 40d40c6bea19 bcachefs: assign return error when iterating through layout
kernel BUG in bch2_lru_change (2) bcachefs C 2 128d 128d 28/28 80d 9482f3b05332 bcachefs: avoid overflowing LRU_TIME_BITS for cached data lru
WARNING in bch2_fs_journal_stop bcachefs C done 1463 126d 158d 28/28 80d 7f2de6947f92 bcachefs: Fix warning in bch2_fs_journal_stop()
kernel BUG in bch2_journal_replay bcachefs C done 3 123d 195d 28/28 80d cab18be6957b bcachefs: Fix replay_now_at() assert
WARNING in bch2_write_super bcachefs 3 126d 123d 28/28 80d 6575b8c9877c bcachefs: Fix locking in bch2_ioc_setlabel()
KMSAN: uninit-value in bch2_alloc_v4_validate bcachefs C 5 123d 122d 28/28 80d 8ed823b19214 bcachefs: Fix compat issue with old alloc_v4 keys
WARNING in __bch2_fsck_err bcachefs C 200 81d 128d 28/28 80d 075cabf324c3 bcachefs: Fix forgetting to pass trans to fsck_err()
KASAN: slab-out-of-bounds Write in bch2_dev_journal_init bcachefs C 2 126d 125d 28/28 80d bdbdd4759f08 bcachefs: Fix missing validation in bch2_sb_journal_v2_validate()
WARNING in discard_new_inode bcachefs C 3 128d 128d 28/28 80d 99c87fe0f584 bcachefs: fix incorrect i_state usage
kernel BUG in bch2_sort_keys bcachefs C error 3 206d 230d 27/28 107d 5dfd3746b6c4 bcachefs: Fix needs_whiteout BUG_ON() in bkey_sort()
WARNING in __virt_to_phys (5) bcachefs 4 130d 126d 27/28 114d 9bd01500e4d8 bcachefs: Fix freeing of error pointers
possible deadlock in bch2_btree_roots_to_journal_entries bcachefs C done 29 168d 202d 27/28 114d 1841027c7de4 bcachefs: bch2_gc_btree() should not use btree_root_lock
possible deadlock in bch2_gc_mark_key bcachefs C done 86 132d 209d 27/28 114d 1841027c7de4 bcachefs: bch2_gc_btree() should not use btree_root_lock
WARNING in __replicas_deltas_realloc bcachefs C 9 135d 157d 27/28 116d 1d16c605cc55 bcachefs: Disk space accounting rewrite
kernel BUG in bch2_bucket_alloc_freelist bcachefs 1 186d 182d 27/28 116d 44ec5990357b bcachefs: Don't use the new_fs() bucket alloc path on an initialized fs
kernel BUG in bch2_fs_journal_stop bcachefs C done 4370 130d 222d 27/28 116d 600b8be5e747 bcachefs: Change bch2_fs_journal_stop() BUG_ON() to warning
kernel BUG in __replicas_entry_idx bcachefs C done unreliable 3 213d 216d 27/28 117d 8bb8d683a401 bcachefs: Delete journal-buf-sharded old style accounting
WARNING in bch2_fs_usage_read_one bcachefs C done 18 228d 229d 27/28 117d 8bb8d683a401 bcachefs: Delete journal-buf-sharded old style accounting
kernel BUG in bch2_fs_release (2) bcachefs 1 181d 177d 27/28 117d 759b2e800f16 bcachefs: Switch online_reserved shutdown assert to WARN()
kernel panic: not locked: inodes NUM:NUM:NUM cached bcachefs C 2 201d 211d 27/28 118d 385f0c05d670 bcachefs: kill key cache arg to bch2_assert_pos_locked()
BUG: MAX_LOCK_DEPTH too low! (4) bcachefs C error 1364 132d 228d 27/28 119d 375476c41405 bcachefs: Add lockdep support for btree node locks
WARNING in bch2_fs_ioctl bcachefs C done 36 132d 193d 27/28 121d d293ece10810 bcachefs: Fix shutdown ordering
KASAN: global-out-of-bounds Read in srcu_gp_start_if_needed bcachefs 1 213d 209d 27/28 121d d293ece10810 bcachefs: Fix shutdown ordering
kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev bcachefs C done 21 211d 222d 27/28 121d 9667214b30ef bcachefs: Fix ref in trans_mark_dev_sbs() error path
KASAN: wild-memory-access Read in __timer_delete_sync bcachefs 5 142d 209d 27/28 121d d293ece10810 bcachefs: Fix shutdown ordering
WARNING: suspicious RCU usage in bch2_bucket_ref_update bcachefs C done 5 166d 166d 27/28 130d 6f692b1672bd bcachefs: Fix RCU splat
kernel BUG in bch2_bucket_alloc_trans bcachefs 18 156d 185d 27/28 130d 44ec5990357b bcachefs: Don't use the new_fs() bucket alloc path on an initialized fs
BUG: sleeping function called from invalid context in bch2_printbuf_make_room bcachefs C done 27 155d 153d 27/28 130d 737759fc098f bcachefs: Fix printbuf usage while atomic
UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid (2) bcachefs C 117 131d 195d 27/28 130d a0bd30e4ea9d bcachefs: Fix shift greater than integer size
kernel BUG in bch2_ioctl_fsck_online bcachefs C done 3 186d 182d 26/28 161d 9bd01500e4d8 bcachefs: Fix freeing of error pointers
WARNING in __virt_to_phys (4) bcachefs C 2 175d 171d 26/28 161d 9bd01500e4d8 bcachefs: Fix freeing of error pointers
UBSAN: shift-out-of-bounds in bch2_btree_node_read_done bcachefs C 3 189d 213d 26/28 163d 9e7cfb35e266 bcachefs: Check for invalid btree IDs
UBSAN: array-index-out-of-bounds in bch2_bkey_swab_key bcachefs 2 198d 196d 26/28 165d d47df4f616d5 bcachefs: Fix array-index-out-of-bounds
INFO: task hung in journal_quiesce bcachefs syz 76 176d 205d 26/28 165d 89d21b69b4f8 bcachefs: Add missing bch2_journal_do_writes() call
UBSAN: array-index-out-of-bounds in lock_timer_base bcachefs kvm 4 188d 202d 26/28 165d b79922009214 bcachefs: Add missing synchronize_srcu_expedited() call when shutting down
WARNING in bch2_fs_read_write_early bcachefs C 35 183d 191d 26/28 165d 1ba44217f825 bcachefs: delete_dead_snapshots() doesn't need to go RW
UBSAN: shift-out-of-bounds in read_one_super (2) bcachefs 4 191d 188d 26/28 165d d406545613b5 bcachefs: Fix shift overflow in read_one_super()
KASAN: slab-use-after-free Read in bch2_sb_errors_from_cpu bcachefs C 2 183d 179d 26/28 165d 211c581de28e bcachefs: slab-use-after-free Read in bch2_sb_errors_from_cpu
UBSAN: shift-out-of-bounds in bch2_blacklist_entries_gc bcachefs C 45 180d 179d 26/28 165d 472237b69d07 bcachefs: Fix shift-out-of-bounds in bch2_blacklist_entries_gc
kernel BUG in bch2_journal_res_get bcachefs C 2 196d 192d 26/28 165d dbf4d79b7fc7 bcachefs: Fix early init error path in journal code
kernel BUG in bch2_lru_change bcachefs C done 4 183d 198d 26/28 165d cff07e2739d8 bcachefs: Guard against overflowing LRU_TIME_BITS
WARNING: locking bug in srcu_gp_start_if_needed kvm bcachefs 2 192d 194d 26/28 165d f770a6e9a3d7 bcachefs: Fix initialization order for srcu barrier
WARNING: kmalloc bug in __snapshot_t_mut bcachefs C done 10 176d 206d 26/28 165d 64cd7de998f3 bcachefs: Fix kmalloc bug in __snapshot_t_mut
KASAN: slab-use-after-free Read in bch2_fs_recovery bcachefs 21 184d 184d 26/28 165d 2fe79ce7d1e8 bcachefs: Fix a UAF after write_super()
WARNING: locking bug in __timer_delete_sync kvm bcachefs 6 179d 204d 26/28 165d b79922009214 bcachefs: Add missing synchronize_srcu_expedited() call when shutting down
kernel BUG in gc_bucket bcachefs C done 221 199d 204d 26/28 165d 9432e90df1b8 bcachefs: Check for invalid bucket from bucket_gen(), gc_bucket()
general protection fault in bch2_fs_btree_key_cache_exit bcachefs 6 191d 192d 26/28 184d b30b70ad8bff bcachefs: Fix early error path in bch2_fs_btree_key_cache_exit()
UBSAN: shift-out-of-bounds in bch2_sb_dev_has_data bcachefs C done 15 224d 222d 25/28 194d bcfbaea8e547 bcachefs: Fix shift overflows in replicas.c
kernel panic: not locked: inodes NUM:ADDR:NUM cached bcachefs C 2 221d 217d 25/28 194d 6ce26ad376bd bcachefs: Fix missing parens in drop_locks_do()
kernel BUG in bch2_btree_iter_verify_entry_exit bcachefs C done 3 214d 220d 25/28 194d 765b8cb8acab bcachefs: Check for subvolues with bogus snapshot/inode fields
kernel BUG in bch2_checksum bcachefs C done 9 211d 222d 25/28 194d 6b74fdcc8e25 bcachefs: bch2_checksum() returns 0 for unknown checksum type
general protection fault in poll_state_synchronize_srcu bcachefs 5 214d 214d 25/28 194d d293ece10810 bcachefs: Fix shutdown ordering
kernel BUG in cpu_replicas_add_entry bcachefs C done 11 205d 223d 25/28 194d 5fa421448d1f bcachefs: Fix bogus verify_replicas_entry() assert
kernel BUG in __journal_res_get bcachefs C done 7 203d 227d 25/28 194d cd3b31f9d417 bcachefs: Ensure we're RW before journalling
KASAN: stack-out-of-bounds Read in __bch2_encrypt_bio bcachefs C done 2 224d 222d 25/28 194d 2ba24864d2f6 bcachefs: Fix stack oob in __bch2_encrypt_bio()
UBSAN: shift-out-of-bounds in bch2_btree_lost_data bcachefs C done 3 220d 219d 25/28 194d f108ddd467b5 bcachefs: Fix shift overflow in btree_lost_data()
kernel BUG in bch2_fs_release bcachefs 3 206d 211d 25/28 194d d509cadc3a48 bcachefs: Fix debug assert
kernel panic: bch_dev->ref underflow, last put: bch2_trigger_alloc bcachefs C done 6 212d 223d 25/28 194d 9667214b30ef bcachefs: Fix ref in trans_mark_dev_sbs() error path
general protection fault in __bch2_insert_snapshot_whiteouts bcachefs C done 65 209d 222d 25/28 194d 6d48e61364ae bcachefs: Add missing guard in bch2_snapshot_has_children()
KASAN: slab-use-after-free Read in evict_inodes bcachefs C done 2 226d 223d 25/28 194d d93ff5fa40b9 bcachefs: Fix race path in bch2_inode_insert()
general protection fault in crypto_skcipher_encrypt crypto bcachefs C error 66 194d 221d 25/28 194d c06a8b75679d bcachefs: Fix bch2_alloc_ciphers()
KMSAN: uninit-value in bch2_dirent_invalid bcachefs C 239 194d 222d 25/28 194d 2195b755ebd2 bcachefs: Fix unsafety in bch2_dirent_name_bytes()
kernel BUG in bch2_fs_recovery bcachefs C done done 161 227d 232d 25/28 195d 7ffec9ccdc6a bcachefs: don't free error pointers
UBSAN: shift-out-of-bounds in read_one_super bcachefs C done 31 201d 230d 25/28 200d 71dac2482ad3 bcachefs: BCH_SB_LAYOUT_SIZE_BITS_MAX
WARNING: kmalloc bug in bch2_dev_buckets_resize bcachefs C 17 200d 232d 25/28 200d db42549d402c bcachefs: Add a better limit for maximum number of buckets
WARNING in __virt_to_phys (3) bcachefs C 447 200d 233d 25/28 200d 7ffec9ccdc6a bcachefs: don't free error pointers
KMSAN: uninit-value in __bch2_write_index bcachefs 1 232d 232d 25/28 200d 1267df40acb2 bcachefs: Initialize bch_write_op->failed in inline data path
BUG: unable to handle kernel paging request in bch2_fs_btree_key_cache_exit bcachefs C 1002 200d 233d 25/28 200d b30b70ad8bff bcachefs: Fix early error path in bch2_fs_btree_key_cache_exit()
WARNING: suspicious RCU usage in bch2_fs_quota_read bcachefs C done 24 200d 230d 25/28 200d 8060bf1d83f7 bcachefs: Fix snapshot_t() usage in bch2_fs_quota_read_inode()
UBSAN: shift-out-of-bounds in __bch2_bkey_invalid bcachefs C done 6 205d 230d 25/28 200d 2bb9600d5d47 bcachefs: Guard against unknown k.k->type in __bkey_invalid()
KASAN: slab-out-of-bounds Read in bch2_sb_downgrade_to_text bcachefs C done 32 217d 230d 25/28 200d 692aa7a54b2b bcachefs: Fix sb_field_downgrade validation
KASAN: slab-out-of-bounds Read in bch2_sb_clean_to_text bcachefs C done 3 221d 230d 25/28 200d f39055220f6f bcachefs: Add missing validation for superblock section clean
kernel BUG in bch2_alloc_v4_invalid bcachefs C error 3 207d 230d 25/28 200d 6b8cbfc3db75 bcachefs: Fix assert in bch2_alloc_v4_invalid()
KASAN: slab-out-of-bounds Read in bch2_varint_decode_fast bcachefs C 583 200d 233d 25/28 200d 4a8521b6bb81 bcachefs: Inodes need extra padding for varint_decode_fast()
UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid bcachefs C 45 202d 228d 25/28 200d 61692c7812ab bcachefs: bch2_bkey_format_field_overflows()
UBSAN: shift-out-of-bounds in rewrite_old_nodes_pred bcachefs C done 3 231d 231d 25/28 200d 0ec5b3b7ccfc bcachefs: Fix shift-by-64 in bformat_needs_redo()
kernel BUG in bch2_btree_node_read_done bcachefs C error 5 230d 233d 25/28 200d a2ddaf965f6a bcachefs: bucket_pos_to_bp_noerror()