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 11d 45d 1/28 never bcachefs: Guard against backpointers to unknown btrees
general protection fault in bch2_btree_path_traverse_one bcachefs C done 140 56m 57d 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 21 7h57m 54d 1/28 never bcachefs: Guard against journal seq overflow
INFO: task hung in __writeback_inodes_sb_nr (6) bcachefs C done 3234 now 553d 1/28 never PM: hibernate: Fix block device handling in test_resume mode
kernel BUG in __bch2_trans_commit bcachefs C unreliable 11858 36d 61d 1/28 never bcachefs: -o norecovery now bails out of recovery earlier
kernel BUG in bch2_journal_noflush_seq bcachefs C done done 325 1h53m 163d 1/28 never bcachefs: Check for bucket journal seq in the future
kernel BUG in bch2_rechecksum_bio bcachefs C 4 32d 43d 1/28 never bcachefs: Check for extent crc uncompressed/compressed size mismatch
WARNING in bch2_journal_flush_seq_async bcachefs C 23 13d 94d 1/28 never bcachefs: Check for inode journal seq in the future
kernel BUG in bch2_bio_compress (2) bcachefs C 4 29d 37d 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 17d 39d 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 320 10h28m 190d 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 28 11h48m 28d 1/28 never bcachefs: Fix btree node scan when unknown btree IDs are present
kernel BUG in __bch2_btree_node_write bcachefs C 50 12h46m 79d 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 3d06h 26d 1/28 never bcachefs: Fix journal_iter list corruption
kernel BUG in __bch2_journal_pin_put bcachefs C 6 12d 26d 1/28 never bcachefs: Guard against journal seq overflow
kernel BUG in bch2_journal_pin_set bcachefs C done 8 3d03h 26d 1/28 never bcachefs: Guard against journal seq overflow
kernel BUG in bch2_btree_node_lock_write bcachefs C done 8 18d 30d 1/28 never bcachefs: Issue a transaction restart after commit in repair
kernel BUG in bch2_btree_root_read bcachefs C 5 21d 29d 1/28 never bcachefs: Kill bch2_bucket_alloc_new_fs()
kernel BUG in bch2_bucket_alloc_trans (3) bcachefs C error 488 58m 32d 1/28 never bcachefs: Kill bch2_bucket_alloc_new_fs()
kernel BUG in bch2_evacuate_bucket bcachefs C done 4 26d 26d 1/28 never bcachefs: Kill bch2_get_next_backpointer()
possible deadlock in __bch2_fsck_err bcachefs 2 13d 14d 1/28 never bcachefs: Kill unnecessary mark_lock usage
kernel BUG in bch2_fs_btree_cache_exit bcachefs C done 2766 33d 64d 27/28 never ca43f73cd172 bcachefs: bch2_btree_write_buffer_flush_going_ro()
kernel BUG in bch2_journal_res_get (2) bcachefs C 1710 33d 57d 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 33d 84d 27/28 never ca43f73cd172 bcachefs: bch2_btree_write_buffer_flush_going_ro()
possible deadlock in __bch2_trans_relock bcachefs C 40 9h09m 58d 1/28 never bcachefs: bch2_trans_relock() is trylock for lockdep
general protection fault in bch2_checksum bcachefs C done 14 8d18h 157d 1/28 never bcachefs: cryptographic MACs on superblock are not (yet?) supported
kernel BUG in bch2_get_scanned_nodes bcachefs C done 97 17d 23d 1/28 never bcachefs: struct bkey_validate_context
kernel BUG in __bch2_btree_node_hash_insert bcachefs C done 396 33d 42d 28/28 5d06h 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 144d 28/28 5d06h 657d4282d8c4 bcachefs: Fix journal_entry_dev_usage_to_text() overrun
kernel BUG in __bkey_unpack_pos bcachefs C 4 13d 51d 28/28 5d06h dc537189b5cf bcachefs: Fix validate_bset() repair path
kernel BUG in bch2_trans_node_iter_init bcachefs C done 13 43d 57d 28/28 5d06h f8f1dde68681 bcachefs: Fix missing validation for bch_backpointer.level
kernel BUG in bch2_btree_path_level_init (2) bcachefs C done 29 8d22h 59d 28/28 5d06h f8f1dde68681 bcachefs: Fix missing validation for bch_backpointer.level
kernel BUG in bch2_dev_btree_bitmap_mark bcachefs C done 31 36d 61d 28/28 5d06h 27a036a0c3e7 bcachefs: Fix bch_member.btree_bitmap_shift validation
kernel BUG in bch2_bkey_pack_pos_lossy bcachefs C 7 44d 55d 28/28 5d06h dc537189b5cf bcachefs: Fix validate_bset() repair path
kernel BUG in bch2_run_recovery_pass bcachefs C done 17 37d 57d 28/28 5d06h 2642084f26b5 bcachefs: Allow for unknown key types in backpointers fsck
kernel BUG in bch2_ptr_swab bcachefs C inconclusive 11 42d 59d 28/28 5d06h 840c2fbcc5cd bcachefs: Fix assertion pop in bch2_ptr_swab()
kernel BUG in __bch2_bkey_cmp_packed_format_checked bcachefs C 4 57d 57d 28/28 9d17h d335bb3fd3a4 bcachefs: Ancient versions with bad bkey_formats are no longer supported
kernel BUG in bch2_bkey_cmp_packed bcachefs C 8 44d 57d 28/28 9d17h d335bb3fd3a4 bcachefs: Ancient versions with bad bkey_formats are no longer supported
kernel BUG in bch2_inconsistent_error bcachefs C 4 43d 55d 28/28 9d17h 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 54d 59d 28/28 37d 8e910ca20e11 bcachefs: Fix UAF in bch2_reconstruct_alloc()
kernel BUG in bch2_bucket_alloc_trans (2) bcachefs C done 103 37d 65d 28/28 37d 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 63d 59d 28/28 37d a25a83de45b4 bcachefs: fix null-ptr-deref in have_stripes()
general protection fault in btree_node_iter_and_journal_peek bcachefs C 3 60d 82d 28/28 37d 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 49d 61d 28/28 37d 5c41f75d1b92 bcachefs: fix shift oob in alloc_lru_idx_fragmentation
UBSAN: shift-out-of-bounds in validate_sb_layout bcachefs C done 7 50d 59d 28/28 37d 2045fc4295c4 bcachefs: Fix invalid shift in validate_sb_layout()
possible deadlock in bch2_replicas_entry_validate bcachefs C done 9468 60d 78d 28/28 38d bf4baaa087e2 bcachefs: Fix lockdep splat in bch2_accounting_read
kernel BUG in bch2_btree_pos_to_text bcachefs C 8 41d 90d 28/28 38d 0151d10a480d bcachefs: add check for btree id against max in try read node
general protection fault in prt_str bcachefs C done 2 81d 96d 28/28 38d a30f32222df2 bcachefs: Fix NULL pointer dereference in bch2_opt_to_text
general protection fault in bch2_alloc_read bcachefs C 7 79d 86d 28/28 38d a319aeaebb6c bcachefs: Fix missing bounds checks in bch2_alloc_read()
UBSAN: shift-out-of-bounds in bch2_stripe_to_text bcachefs C 3 90d 86d 28/28 38d 9f25dbe0bf91 bcachefs: Add missing validation for bch_stripe.csum_granularity_bits
UBSAN: shift-out-of-bounds in member_to_text bcachefs C 12 65d 109d 28/28 38d c1bd21bb6518 bcachefs: Fix invalid shift in member_to_text()
KASAN: slab-use-after-free Read in bch2_direct_write bcachefs 11 83d 85d 28/28 38d 573ddcdc5607 bcachefs: fix uaf in bch2_dio_write_done()
WARNING in __bch2_fsck_err (2) bcachefs C 3 78d 74d 28/28 58d 5612daafb764 bcachefs: Fix fsck warnings from bkey validation
general protection fault in bch2_fs_recovery bcachefs C 10 83d 102d 28/28 60d 025c55a4c7f1 bcachefs: return err ptr instead of null in read sb clean
kernel BUG in vfs_get_tree bcachefs C done 318 78d 121d 28/28 60d b29c30ab48e0 bcachefs: Fix incorrect IS_ERR_OR_NULL usage
KMSAN: uninit-value in bch2_bkey_cmp_packed_inlined bcachefs C 7 83d 103d 28/28 60d 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 83d 94d 28/28 60d 39c3aad43f6f bcachefs: Hold read lock in bch2_snapshot_tree_oldest_subvol()
general protection fault in __copy_super bcachefs C done 5 88d 91d 28/28 60d 40d40c6bea19 bcachefs: assign return error when iterating through layout
kernel BUG in bch2_lru_change (2) bcachefs C 2 127d 127d 28/28 79d 9482f3b05332 bcachefs: avoid overflowing LRU_TIME_BITS for cached data lru
WARNING in bch2_fs_journal_stop bcachefs C done 1463 125d 157d 28/28 79d 7f2de6947f92 bcachefs: Fix warning in bch2_fs_journal_stop()
kernel BUG in bch2_journal_replay bcachefs C done 3 122d 194d 28/28 79d cab18be6957b bcachefs: Fix replay_now_at() assert
WARNING in bch2_write_super bcachefs 3 126d 122d 28/28 79d 6575b8c9877c bcachefs: Fix locking in bch2_ioc_setlabel()
KMSAN: uninit-value in bch2_alloc_v4_validate bcachefs C 5 122d 121d 28/28 79d 8ed823b19214 bcachefs: Fix compat issue with old alloc_v4 keys
WARNING in __bch2_fsck_err bcachefs C 200 80d 127d 28/28 79d 075cabf324c3 bcachefs: Fix forgetting to pass trans to fsck_err()
KASAN: slab-out-of-bounds Write in bch2_dev_journal_init bcachefs C 2 125d 124d 28/28 79d bdbdd4759f08 bcachefs: Fix missing validation in bch2_sb_journal_v2_validate()
WARNING in discard_new_inode bcachefs C 3 127d 127d 28/28 79d 99c87fe0f584 bcachefs: fix incorrect i_state usage
kernel BUG in bch2_sort_keys bcachefs C error 3 205d 229d 27/28 106d 5dfd3746b6c4 bcachefs: Fix needs_whiteout BUG_ON() in bkey_sort()
WARNING in __virt_to_phys (5) bcachefs 4 129d 125d 27/28 113d 9bd01500e4d8 bcachefs: Fix freeing of error pointers
possible deadlock in bch2_btree_roots_to_journal_entries bcachefs C done 29 167d 201d 27/28 113d 1841027c7de4 bcachefs: bch2_gc_btree() should not use btree_root_lock
possible deadlock in bch2_gc_mark_key bcachefs C done 86 131d 208d 27/28 113d 1841027c7de4 bcachefs: bch2_gc_btree() should not use btree_root_lock
WARNING in __replicas_deltas_realloc bcachefs C 9 134d 156d 27/28 115d 1d16c605cc55 bcachefs: Disk space accounting rewrite
kernel BUG in bch2_bucket_alloc_freelist bcachefs 1 185d 181d 27/28 115d 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 129d 221d 27/28 115d 600b8be5e747 bcachefs: Change bch2_fs_journal_stop() BUG_ON() to warning
kernel BUG in __replicas_entry_idx bcachefs C done unreliable 3 212d 215d 27/28 116d 8bb8d683a401 bcachefs: Delete journal-buf-sharded old style accounting
WARNING in bch2_fs_usage_read_one bcachefs C done 18 227d 228d 27/28 116d 8bb8d683a401 bcachefs: Delete journal-buf-sharded old style accounting
kernel BUG in bch2_fs_release (2) bcachefs 1 180d 176d 27/28 116d 759b2e800f16 bcachefs: Switch online_reserved shutdown assert to WARN()
kernel panic: not locked: inodes NUM:NUM:NUM cached bcachefs C 2 200d 210d 27/28 117d 385f0c05d670 bcachefs: kill key cache arg to bch2_assert_pos_locked()
BUG: MAX_LOCK_DEPTH too low! (4) bcachefs C error 1364 131d 227d 27/28 118d 375476c41405 bcachefs: Add lockdep support for btree node locks
WARNING in bch2_fs_ioctl bcachefs C done 36 131d 192d 27/28 120d d293ece10810 bcachefs: Fix shutdown ordering
KASAN: global-out-of-bounds Read in srcu_gp_start_if_needed bcachefs 1 212d 208d 27/28 120d d293ece10810 bcachefs: Fix shutdown ordering
kernel panic: bch_dev->ref underflow, last put: bch2_get_next_dev bcachefs C done 21 210d 221d 27/28 120d 9667214b30ef bcachefs: Fix ref in trans_mark_dev_sbs() error path
KASAN: wild-memory-access Read in __timer_delete_sync bcachefs 5 141d 208d 27/28 120d d293ece10810 bcachefs: Fix shutdown ordering
WARNING: suspicious RCU usage in bch2_bucket_ref_update bcachefs C done 5 165d 165d 27/28 129d 6f692b1672bd bcachefs: Fix RCU splat
kernel BUG in bch2_bucket_alloc_trans bcachefs 18 155d 184d 27/28 129d 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 154d 152d 27/28 129d 737759fc098f bcachefs: Fix printbuf usage while atomic
UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid (2) bcachefs C 117 130d 194d 27/28 129d a0bd30e4ea9d bcachefs: Fix shift greater than integer size
kernel BUG in bch2_ioctl_fsck_online bcachefs C done 3 185d 181d 26/28 160d 9bd01500e4d8 bcachefs: Fix freeing of error pointers
WARNING in __virt_to_phys (4) bcachefs C 2 174d 170d 26/28 160d 9bd01500e4d8 bcachefs: Fix freeing of error pointers
UBSAN: shift-out-of-bounds in bch2_btree_node_read_done bcachefs C 3 188d 212d 26/28 162d 9e7cfb35e266 bcachefs: Check for invalid btree IDs
UBSAN: array-index-out-of-bounds in bch2_bkey_swab_key bcachefs 2 197d 195d 26/28 164d d47df4f616d5 bcachefs: Fix array-index-out-of-bounds
INFO: task hung in journal_quiesce bcachefs syz 76 175d 204d 26/28 164d 89d21b69b4f8 bcachefs: Add missing bch2_journal_do_writes() call
UBSAN: array-index-out-of-bounds in lock_timer_base bcachefs kvm 4 187d 201d 26/28 164d b79922009214 bcachefs: Add missing synchronize_srcu_expedited() call when shutting down
WARNING in bch2_fs_read_write_early bcachefs C 35 182d 190d 26/28 164d 1ba44217f825 bcachefs: delete_dead_snapshots() doesn't need to go RW
UBSAN: shift-out-of-bounds in read_one_super (2) bcachefs 4 190d 187d 26/28 164d d406545613b5 bcachefs: Fix shift overflow in read_one_super()
KASAN: slab-use-after-free Read in bch2_sb_errors_from_cpu bcachefs C 2 182d 178d 26/28 164d 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 179d 178d 26/28 164d 472237b69d07 bcachefs: Fix shift-out-of-bounds in bch2_blacklist_entries_gc
kernel BUG in bch2_journal_res_get bcachefs C 2 195d 191d 26/28 164d dbf4d79b7fc7 bcachefs: Fix early init error path in journal code
kernel BUG in bch2_lru_change bcachefs C done 4 182d 197d 26/28 164d cff07e2739d8 bcachefs: Guard against overflowing LRU_TIME_BITS
WARNING: locking bug in srcu_gp_start_if_needed kvm bcachefs 2 191d 193d 26/28 164d f770a6e9a3d7 bcachefs: Fix initialization order for srcu barrier
WARNING: kmalloc bug in __snapshot_t_mut bcachefs C done 10 175d 205d 26/28 164d 64cd7de998f3 bcachefs: Fix kmalloc bug in __snapshot_t_mut
KASAN: slab-use-after-free Read in bch2_fs_recovery bcachefs 21 183d 183d 26/28 164d 2fe79ce7d1e8 bcachefs: Fix a UAF after write_super()
WARNING: locking bug in __timer_delete_sync kvm bcachefs 6 178d 203d 26/28 164d b79922009214 bcachefs: Add missing synchronize_srcu_expedited() call when shutting down
kernel BUG in gc_bucket bcachefs C done 221 198d 203d 26/28 164d 9432e90df1b8 bcachefs: Check for invalid bucket from bucket_gen(), gc_bucket()
general protection fault in bch2_fs_btree_key_cache_exit bcachefs 6 190d 191d 26/28 183d 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 223d 221d 25/28 193d bcfbaea8e547 bcachefs: Fix shift overflows in replicas.c
kernel panic: not locked: inodes NUM:ADDR:NUM cached bcachefs C 2 220d 216d 25/28 193d 6ce26ad376bd bcachefs: Fix missing parens in drop_locks_do()
kernel BUG in bch2_btree_iter_verify_entry_exit bcachefs C done 3 213d 219d 25/28 193d 765b8cb8acab bcachefs: Check for subvolues with bogus snapshot/inode fields
kernel BUG in bch2_checksum bcachefs C done 9 210d 221d 25/28 193d 6b74fdcc8e25 bcachefs: bch2_checksum() returns 0 for unknown checksum type
general protection fault in poll_state_synchronize_srcu bcachefs 5 213d 213d 25/28 193d d293ece10810 bcachefs: Fix shutdown ordering
kernel BUG in cpu_replicas_add_entry bcachefs C done 11 204d 222d 25/28 193d 5fa421448d1f bcachefs: Fix bogus verify_replicas_entry() assert
kernel BUG in __journal_res_get bcachefs C done 7 202d 226d 25/28 193d cd3b31f9d417 bcachefs: Ensure we're RW before journalling
KASAN: stack-out-of-bounds Read in __bch2_encrypt_bio bcachefs C done 2 223d 221d 25/28 193d 2ba24864d2f6 bcachefs: Fix stack oob in __bch2_encrypt_bio()
UBSAN: shift-out-of-bounds in bch2_btree_lost_data bcachefs C done 3 219d 218d 25/28 193d f108ddd467b5 bcachefs: Fix shift overflow in btree_lost_data()
kernel BUG in bch2_fs_release bcachefs 3 205d 210d 25/28 193d d509cadc3a48 bcachefs: Fix debug assert
kernel panic: bch_dev->ref underflow, last put: bch2_trigger_alloc bcachefs C done 6 211d 222d 25/28 193d 9667214b30ef bcachefs: Fix ref in trans_mark_dev_sbs() error path
general protection fault in __bch2_insert_snapshot_whiteouts bcachefs C done 65 208d 221d 25/28 193d 6d48e61364ae bcachefs: Add missing guard in bch2_snapshot_has_children()
KASAN: slab-use-after-free Read in evict_inodes bcachefs C done 2 225d 222d 25/28 193d d93ff5fa40b9 bcachefs: Fix race path in bch2_inode_insert()
general protection fault in crypto_skcipher_encrypt crypto bcachefs C error 66 193d 221d 25/28 193d c06a8b75679d bcachefs: Fix bch2_alloc_ciphers()
KMSAN: uninit-value in bch2_dirent_invalid bcachefs C 239 193d 221d 25/28 193d 2195b755ebd2 bcachefs: Fix unsafety in bch2_dirent_name_bytes()
kernel BUG in bch2_fs_recovery bcachefs C done done 161 226d 231d 25/28 194d 7ffec9ccdc6a bcachefs: don't free error pointers
UBSAN: shift-out-of-bounds in read_one_super bcachefs C done 31 200d 229d 25/28 199d 71dac2482ad3 bcachefs: BCH_SB_LAYOUT_SIZE_BITS_MAX
WARNING: kmalloc bug in bch2_dev_buckets_resize bcachefs C 17 199d 231d 25/28 199d db42549d402c bcachefs: Add a better limit for maximum number of buckets
WARNING in __virt_to_phys (3) bcachefs C 447 199d 232d 25/28 199d 7ffec9ccdc6a bcachefs: don't free error pointers
KMSAN: uninit-value in __bch2_write_index bcachefs 1 231d 231d 25/28 199d 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 199d 232d 25/28 199d 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 199d 229d 25/28 199d 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 204d 229d 25/28 199d 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 216d 229d 25/28 199d 692aa7a54b2b bcachefs: Fix sb_field_downgrade validation
KASAN: slab-out-of-bounds Read in bch2_sb_clean_to_text bcachefs C done 3 220d 229d 25/28 199d f39055220f6f bcachefs: Add missing validation for superblock section clean
kernel BUG in bch2_alloc_v4_invalid bcachefs C error 3 206d 229d 25/28 199d 6b8cbfc3db75 bcachefs: Fix assert in bch2_alloc_v4_invalid()
KASAN: slab-out-of-bounds Read in bch2_varint_decode_fast bcachefs C 583 199d 232d 25/28 199d 4a8521b6bb81 bcachefs: Inodes need extra padding for varint_decode_fast()
UBSAN: shift-out-of-bounds in bch2_bkey_format_invalid bcachefs C 45 201d 227d 25/28 199d 61692c7812ab bcachefs: bch2_bkey_format_field_overflows()
UBSAN: shift-out-of-bounds in rewrite_old_nodes_pred bcachefs C done 3 230d 230d 25/28 199d 0ec5b3b7ccfc bcachefs: Fix shift-by-64 in bformat_needs_redo()
kernel BUG in bch2_btree_node_read_done bcachefs C error 5 229d 232d 25/28 199d a2ddaf965f6a bcachefs: bucket_pos_to_bp_noerror()