syzbot

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BUG: KMSAN: uninit-value in bch2_alloc_to_v4 fs/bcachefs/alloc_background.h:235 [inline]
BUG: KMSAN: uninit-value in bch2_bucket_alloc_early+0x11c0/0x2520 fs/bcachefs/alloc_foreground.c:439
 bch2_alloc_to_v4 fs/bcachefs/alloc_background.h:235 [inline]
 bch2_bucket_alloc_early+0x11c0/0x2520 fs/bcachefs/alloc_foreground.c:439
 bch2_bucket_alloc_trans+0x8e6/0x3fb0 fs/bcachefs/alloc_foreground.c:649
 bch2_bucket_alloc_set_trans+0x959/0x1650 fs/bcachefs/alloc_foreground.c:808
 __open_bucket_add_buckets+0x1dec/0x3070 fs/bcachefs/alloc_foreground.c:1057
 open_bucket_add_buckets+0x328/0x530 fs/bcachefs/alloc_foreground.c:1101
 bch2_alloc_sectors_start_trans+0x1833/0x32b0
 __bch2_btree_node_alloc fs/bcachefs/btree_update_interior.c:343 [inline]
 bch2_btree_reserve_get+0x9d6/0x2290 fs/bcachefs/btree_update_interior.c:554
 bch2_btree_update_start+0x1af9/0x2d60 fs/bcachefs/btree_update_interior.c:1252
 bch2_btree_split_leaf+0x120/0xc00 fs/bcachefs/btree_update_interior.c:1850
 bch2_trans_commit_error+0x1c0/0x1d60 fs/bcachefs/btree_trans_commit.c:942
 __bch2_trans_commit+0x210f/0xd190 fs/bcachefs/btree_trans_commit.c:1140
 bch2_trans_commit fs/bcachefs/btree_update.h:184 [inline]
 btree_update_nodes_written fs/bcachefs/btree_update_interior.c:728 [inline]
 btree_interior_update_work+0x2080/0x4870 fs/bcachefs/btree_update_interior.c:866
 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_node_data_alloc fs/bcachefs/btree_cache.c:125 [inline]
 __bch2_btree_node_mem_alloc+0x2c8/0x9d0 fs/bcachefs/btree_cache.c:170
 bch2_fs_btree_cache_init+0x4e4/0xb50 fs/bcachefs/btree_cache.c:633
 bch2_fs_alloc fs/bcachefs/super.c:916 [inline]
 bch2_fs_open+0x4d35/0x5b30 fs/bcachefs/super.c:2064
 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
 __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: 1 UID: 0 PID: 1882 Comm: kworker/u8:7 Not tainted 6.12.0-rc5-syzkaller-00299-g11066801dd4b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: btree_update btree_interior_update_work
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