=====================================================
BUG: KMSAN: uninit-value in bch2_alloc_v4_validate+0x739/0x19a0 fs/bcachefs/alloc_background.c:249
 bch2_alloc_v4_validate+0x739/0x19a0 fs/bcachefs/alloc_background.c:249
 bch2_bkey_val_validate+0x2b5/0x440 fs/bcachefs/bkey_methods.c:143
 bset_key_validate fs/bcachefs/btree_io.c:845 [inline]
 validate_bset_keys+0x1531/0x2080 fs/bcachefs/btree_io.c:914
 validate_bset_for_write+0x142/0x290 fs/bcachefs/btree_io.c:1946
 __bch2_btree_node_write+0x53df/0x6830 fs/bcachefs/btree_io.c:2156
 __btree_node_write_done+0x409/0x520 fs/bcachefs/btree_io.c:1831
 btree_node_write_done fs/bcachefs/btree_io.c:1844 [inline]
 btree_node_write_work+0x1247/0x15a0 fs/bcachefs/btree_io.c:1886
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3310
 worker_thread+0xea7/0x14f0 kernel/workqueue.c:3391
 kthread+0x3e2/0x540 kernel/kthread.c:389
 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Uninit was stored to memory at:
 bch2_alloc_v4_validate+0x27f/0x19a0 fs/bcachefs/alloc_background.c:247
 bch2_bkey_val_validate+0x2b5/0x440 fs/bcachefs/bkey_methods.c:143
 bset_key_validate fs/bcachefs/btree_io.c:845 [inline]
 validate_bset_keys+0x1531/0x2080 fs/bcachefs/btree_io.c:914
 validate_bset_for_write+0x142/0x290 fs/bcachefs/btree_io.c:1946
 __bch2_btree_node_write+0x53df/0x6830 fs/bcachefs/btree_io.c:2156
 __btree_node_write_done+0x409/0x520 fs/bcachefs/btree_io.c:1831
 btree_node_write_done fs/bcachefs/btree_io.c:1844 [inline]
 btree_node_write_work+0x1247/0x15a0 fs/bcachefs/btree_io.c:1886
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3310
 worker_thread+0xea7/0x14f0 kernel/workqueue.c:3391
 kthread+0x3e2/0x540 kernel/kthread.c:389
 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Uninit was stored to memory at:
 memcpy_u64s_small fs/bcachefs/util.h:393 [inline]
 bkey_p_copy fs/bcachefs/bkey.h:47 [inline]
 bch2_sort_keys_keep_unwritten_whiteouts+0x16af/0x19d0 fs/bcachefs/bkey_sort.c:187
 __bch2_btree_node_write+0x3ae8/0x6830 fs/bcachefs/btree_io.c:2099
 __btree_node_write_done+0x409/0x520 fs/bcachefs/btree_io.c:1831
 btree_node_write_done fs/bcachefs/btree_io.c:1844 [inline]
 btree_node_write_work+0x1247/0x15a0 fs/bcachefs/btree_io.c:1886
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3310
 worker_thread+0xea7/0x14f0 kernel/workqueue.c:3391
 kthread+0x3e2/0x540 kernel/kthread.c:389
 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Uninit was created at:
 ___kmalloc_large_node+0x22c/0x370 mm/slub.c:4219
 __kmalloc_large_node_noprof+0x3f/0x1e0 mm/slub.c:4236
 __do_kmalloc_node mm/slub.c:4252 [inline]
 __kmalloc_node_noprof+0x9d6/0xf50 mm/slub.c:4270
 __kvmalloc_node_noprof+0xc0/0x2d0 mm/util.c:658
 btree_bounce_alloc fs/bcachefs/btree_io.c:124 [inline]
 btree_node_sort+0x78a/0x1d30 fs/bcachefs/btree_io.c:323
 bch2_btree_post_write_cleanup+0x1b0/0xf20 fs/bcachefs/btree_io.c:2252
 bch2_btree_node_prep_for_write+0x494/0x720 fs/bcachefs/btree_trans_commit.c:93
 bch2_trans_lock_write+0x7ef/0xc00 fs/bcachefs/btree_trans_commit.c:129
 do_bch2_trans_commit fs/bcachefs/btree_trans_commit.c:896 [inline]
 __bch2_trans_commit+0x31c4/0xd190 fs/bcachefs/btree_trans_commit.c:1121
 bch2_trans_commit fs/bcachefs/btree_update.h:184 [inline]
 bch2_journal_replay+0x2e3d/0x4d30 fs/bcachefs/recovery.c:317
 bch2_run_recovery_pass fs/bcachefs/recovery_passes.c:185 [inline]
 bch2_run_recovery_passes+0xaf9/0xf80 fs/bcachefs/recovery_passes.c:238
 bch2_fs_recovery+0x447b/0x5b00 fs/bcachefs/recovery.c:861
 bch2_fs_start+0x7b2/0xbd0 fs/bcachefs/super.c:1036
 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
 __ia32_sys_mount+0xe3/0x150 fs/namespace.c:4034
 ia32_sys_call+0x2530/0x40d0 arch/x86/include/generated/asm/syscalls_32.h:22
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0xb0/0x110 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x38/0x80 arch/x86/entry/common.c:411
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:449
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

CPU: 0 UID: 0 PID: 55 Comm: kworker/0:1H Not tainted 6.12.0-rc7-syzkaller-00012-g3022e9d00ebe #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
Workqueue: bcachefs_btree_io btree_node_write_work
=====================================================