bcachefs (loop4): check_allocations... done
bcachefs (loop4): going read-write
bcachefs (loop4): done starting filesystem
=====================================================
BUG: KMSAN: uninit-value in dirent_is_visible fs/bcachefs/dirent.c:88 [inline]
BUG: KMSAN: uninit-value in is_visible_key fs/bcachefs/str_hash.h:148 [inline]
BUG: KMSAN: uninit-value in bch2_hash_lookup_in_snapshot fs/bcachefs/str_hash.h:167 [inline]
BUG: KMSAN: uninit-value in bch2_hash_lookup fs/bcachefs/str_hash.h:195 [inline]
BUG: KMSAN: uninit-value in bch2_dirent_rename+0xa9c/0x5e30 fs/bcachefs/dirent.c:298
 dirent_is_visible fs/bcachefs/dirent.c:88 [inline]
 is_visible_key fs/bcachefs/str_hash.h:148 [inline]
 bch2_hash_lookup_in_snapshot fs/bcachefs/str_hash.h:167 [inline]
 bch2_hash_lookup fs/bcachefs/str_hash.h:195 [inline]
 bch2_dirent_rename+0xa9c/0x5e30 fs/bcachefs/dirent.c:298
 bch2_rename_trans+0xb47/0x26f0 fs/bcachefs/fs-common.c:417
 bch2_rename2+0x1863/0x3600 fs/bcachefs/fs.c:895
 vfs_rename+0x1d9d/0x2280 fs/namei.c:5067
 do_renameat2+0x18d0/0x1d50 fs/namei.c:5224
 __do_sys_renameat2 fs/namei.c:5258 [inline]
 __se_sys_renameat2 fs/namei.c:5255 [inline]
 __x64_sys_renameat2+0x154/0x1f0 fs/namei.c:5255
 x64_sys_call+0x204b/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:317
 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_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:2248
 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_create+0xfd8/0x1700 fs/bcachefs/fs.c:540
 bch2_mknod fs/bcachefs/fs.c:673 [inline]
 bch2_mkdir+0xc0/0x1d0 fs/bcachefs/fs.c:828
 vfs_mkdir+0x4a0/0x780 fs/namei.c:4311
 do_mkdirat+0x529/0x820 fs/namei.c:4334
 __do_sys_mkdirat fs/namei.c:4349 [inline]
 __se_sys_mkdirat fs/namei.c:4347 [inline]
 __x64_sys_mkdirat+0xc6/0x120 fs/namei.c:4347
 x64_sys_call+0x1fad/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:259
 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: 0 UID: 0 PID: 6943 Comm: syz.4.290 Not tainted 6.13.0-rc4-syzkaller-00078-g059dd502b263 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
=====================================================