=====================================================
BUG: KMSAN: uninit-value in bkey_unpack_pos fs/bcachefs/bkey.h:456 [inline]
BUG: KMSAN: uninit-value in rw_aux_tree_set+0x4d2/0x580 fs/bcachefs/bset.c:494
 bkey_unpack_pos fs/bcachefs/bkey.h:456 [inline]
 rw_aux_tree_set+0x4d2/0x580 fs/bcachefs/bset.c:494
 rw_aux_tree_insert_entry+0x742/0xa20 fs/bcachefs/bset.c:913
 bch2_bset_fix_lookup_table+0xf23/0x1470
 bch2_bset_insert+0x1621/0x19f0 fs/bcachefs/bset.c:1015
 bch2_btree_bset_insert_key+0xf4e/0x2b60 fs/bcachefs/btree_trans_commit.c:217
 bch2_btree_insert_key_leaf+0x276/0x1050 fs/bcachefs/btree_trans_commit.c:300
 bch2_trans_commit_write_locked fs/bcachefs/btree_trans_commit.c:790 [inline]
 do_bch2_trans_commit fs/bcachefs/btree_trans_commit.c:866 [inline]
 __bch2_trans_commit+0xbbb5/0xd310 fs/bcachefs/btree_trans_commit.c:1070
 bch2_trans_commit fs/bcachefs/btree_update.h:191 [inline]
 btree_key_cache_flush_pos fs/bcachefs/btree_key_cache.c:459 [inline]
 bch2_btree_key_cache_journal_flush+0x11f0/0x19e0 fs/bcachefs/btree_key_cache.c:539
 journal_flush_pins+0x1335/0x1f90 fs/bcachefs/journal_reclaim.c:589
 journal_flush_pins_or_still_flushing fs/bcachefs/journal_reclaim.c:861 [inline]
 journal_flush_done+0x157/0xe40 fs/bcachefs/journal_reclaim.c:879
 bch2_journal_flush_pins+0xdb/0x3b0 fs/bcachefs/journal_reclaim.c:911
 bch2_journal_flush_all_pins fs/bcachefs/journal_reclaim.h:76 [inline]
 bch2_journal_replay+0x4a22/0x4e20 fs/bcachefs/recovery.c:442
 bch2_run_recovery_pass fs/bcachefs/recovery_passes.c:226 [inline]
 bch2_run_recovery_passes+0x5a2/0x1160 fs/bcachefs/recovery_passes.c:291
 bch2_fs_recovery+0x489c/0x6230 fs/bcachefs/recovery.c:936
 bch2_fs_start+0x7ca/0xc20 fs/bcachefs/super.c:1041
 bch2_fs_get_tree+0x1564/0x24e0 fs/bcachefs/fs.c:2203
 vfs_get_tree+0xb1/0x5a0 fs/super.c:1759
 do_new_mount+0x71f/0x15e0 fs/namespace.c:3878
 path_mount+0x742/0x1f10 fs/namespace.c:4205
 do_mount fs/namespace.c:4218 [inline]
 __do_sys_mount fs/namespace.c:4429 [inline]
 __se_sys_mount+0x71f/0x800 fs/namespace.c:4406
 __x64_sys_mount+0xe4/0x150 fs/namespace.c:4406
 x64_sys_call+0xed5/0x3c80 arch/x86/include/generated/asm/syscalls_64.h:166
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 ___kmalloc_large_node+0x365/0x420 mm/slub.c:4273
 __kmalloc_large_node_noprof+0x3f/0x1e0 mm/slub.c:4290
 __do_kmalloc_node mm/slub.c:4306 [inline]
 __kvmalloc_node_noprof+0xa2/0x13d0 mm/slub.c:5003
 btree_node_data_alloc fs/bcachefs/btree_cache.c:156 [inline]
 __bch2_btree_node_mem_alloc+0x2be/0xa80 fs/bcachefs/btree_cache.c:201
 bch2_fs_btree_cache_init+0x4f0/0xb60 fs/bcachefs/btree_cache.c:655
 bch2_fs_alloc fs/bcachefs/super.c:919 [inline]
 bch2_fs_open+0x4d84/0x5ba0 fs/bcachefs/super.c:2065
 bch2_fs_get_tree+0x98a/0x24e0 fs/bcachefs/fs.c:2190
 vfs_get_tree+0xb1/0x5a0 fs/super.c:1759
 do_new_mount+0x71f/0x15e0 fs/namespace.c:3878
 path_mount+0x742/0x1f10 fs/namespace.c:4205
 do_mount fs/namespace.c:4218 [inline]
 __do_sys_mount fs/namespace.c:4429 [inline]
 __se_sys_mount+0x71f/0x800 fs/namespace.c:4406
 __x64_sys_mount+0xe4/0x150 fs/namespace.c:4406
 x64_sys_call+0xed5/0x3c80 arch/x86/include/generated/asm/syscalls_64.h:166
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 1 UID: 0 PID: 6054 Comm: syz.1.17 Not tainted 6.14.0-syzkaller-00826-g327ecdbc0fda #0 PREEMPT(undef) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
=====================================================