bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=errors=continue,metadata_checksum=none,data_checksum=none,compression=lz4,nojournal_transaction_names
bcachefs (loop0): initializing new filesystem
bcachefs (loop0): going read-write
bcachefs (loop0): marking superblocks
=====================================================
BUG: KMSAN: uninit-value in bkey_unpack_pos fs/bcachefs/bkey.h:463 [inline]
BUG: KMSAN: uninit-value in rw_aux_tree_set+0x4d2/0x580 fs/bcachefs/bset.c:494
 bkey_unpack_pos fs/bcachefs/bkey.h:463 [inline]
 rw_aux_tree_set+0x4d2/0x580 fs/bcachefs/bset.c:494
 rw_aux_tree_insert_entry+0x6c3/0x970 fs/bcachefs/bset.c:913
 bch2_bset_fix_lookup_table+0xecc/0x13e0
 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:820 [inline]
 do_bch2_trans_commit fs/bcachefs/btree_trans_commit.c:900 [inline]
 __bch2_trans_commit+0xaf5e/0xd190 fs/bcachefs/btree_trans_commit.c:1121
 bch2_trans_commit fs/bcachefs/btree_update.h:184 [inline]
 bch2_trans_mark_metadata_bucket+0x8c7/0x2430 fs/bcachefs/buckets.c:1048
 bch2_trans_mark_metadata_sectors fs/bcachefs/buckets.c:1065 [inline]
 __bch2_trans_mark_dev_sb fs/bcachefs/buckets.c:1105 [inline]
 bch2_trans_mark_dev_sb+0x858/0x10e0 fs/bcachefs/buckets.c:1133
 bch2_trans_mark_dev_sbs_flags+0x3e5/0x9f0 fs/bcachefs/buckets.c:1143
 bch2_trans_mark_dev_sbs+0x32/0x40 fs/bcachefs/buckets.c:1155
 bch2_fs_initialize+0x19bd/0x35d0 fs/bcachefs/recovery.c:1074
 bch2_fs_start+0x77d/0xbd0 fs/bcachefs/super.c:1038
 bch2_fs_get_tree+0x13ea/0x22d0 fs/bcachefs/fs.c:2170
 vfs_get_tree+0xb1/0x5a0 fs/super.c:1814
 do_new_mount+0x71f/0x15e0 fs/namespace.c:3507
 path_mount+0x742/0x1f10 fs/namespace.c:3834
 do_mount fs/namespace.c:3847 [inline]
 __do_sys_mount fs/namespace.c:4057 [inline]
 __se_sys_mount+0x722/0x810 fs/namespace.c:4034
 __x64_sys_mount+0xe4/0x150 fs/namespace.c:4034
 x64_sys_call+0x39bf/0x3c30 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+0x22c/0x370 mm/slub.c:4253
 __kmalloc_large_node_noprof+0x3f/0x1e0 mm/slub.c:4270
 __do_kmalloc_node mm/slub.c:4286 [inline]
 __kmalloc_node_noprof+0xc96/0x1250 mm/slub.c:4304
 __kvmalloc_node_noprof+0xc0/0x2d0 mm/util.c:650
 btree_node_data_alloc fs/bcachefs/btree_cache.c:153 [inline]
 __bch2_btree_node_mem_alloc+0x2be/0xa80 fs/bcachefs/btree_cache.c:198
 bch2_fs_btree_cache_init+0x4e4/0xb50 fs/bcachefs/btree_cache.c:653
 bch2_fs_alloc fs/bcachefs/super.c:917 [inline]
 bch2_fs_open+0x4d3a/0x5b40 fs/bcachefs/super.c:2065
 bch2_fs_get_tree+0x983/0x22d0 fs/bcachefs/fs.c:2157
 vfs_get_tree+0xb1/0x5a0 fs/super.c:1814
 do_new_mount+0x71f/0x15e0 fs/namespace.c:3507
 path_mount+0x742/0x1f10 fs/namespace.c:3834
 do_mount fs/namespace.c:3847 [inline]
 __do_sys_mount fs/namespace.c:4057 [inline]
 __se_sys_mount+0x722/0x810 fs/namespace.c:4034
 __x64_sys_mount+0xe4/0x150 fs/namespace.c:4034
 x64_sys_call+0x39bf/0x3c30 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: 5779 Comm: syz-executor350 Not tainted 6.13.0-rc4-syzkaller-00012-g9b2ffa6148b1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
=====================================================