BTRFS: device fsid d552757d-9c39-40e3-95f0-16d819589928 devid 1 transid 8 /dev/loop2 scanned by syz-executor.2 (5425) BTRFS info (device loop2): using sha256 (sha256-generic) checksum algorithm BTRFS info (device loop2): using free space tree BTRFS info (device loop2): enabling ssd optimizations BTRFS info (device loop2): auto enabling async discard ===================================================== BUG: KMSAN: uninit-value in btrfs_comp_cpu_keys fs/btrfs/ctree.c:769 [inline] BUG: KMSAN: uninit-value in comp_keys fs/btrfs/ctree.c:745 [inline] BUG: KMSAN: uninit-value in btrfs_bin_search+0x74c/0xb30 fs/btrfs/ctree.c:935 btrfs_comp_cpu_keys fs/btrfs/ctree.c:769 [inline] comp_keys fs/btrfs/ctree.c:745 [inline] btrfs_bin_search+0x74c/0xb30 fs/btrfs/ctree.c:935 search_for_key_slot fs/btrfs/ctree.c:1925 [inline] btrfs_search_slot+0x1adc/0x4680 fs/btrfs/ctree.c:2237 btrfs_insert_empty_items+0xb3/0x220 fs/btrfs/ctree.c:4376 btrfs_insert_empty_item fs/btrfs/ctree.h:636 [inline] btrfs_insert_inode_ref+0x29b/0x1650 fs/btrfs/inode-item.c:331 btrfs_rename fs/btrfs/inode.c:9224 [inline] btrfs_rename2+0x3ff8/0x5c60 fs/btrfs/inode.c:9334 vfs_rename+0x1a79/0x1fa0 fs/namei.c:4857 do_renameat2+0x16ae/0x1ca0 fs/namei.c:5009 __do_sys_rename fs/namei.c:5055 [inline] __se_sys_rename fs/namei.c:5053 [inline] __ia32_sys_rename+0xdc/0x130 fs/namei.c:5053 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178 do_fast_syscall_32+0x37/0x80 arch/x86/entry/common.c:203 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:246 entry_SYSENTER_compat_after_hwframe+0x70/0x82 Uninit was created at: __alloc_pages+0x9a4/0xe00 mm/page_alloc.c:4500 alloc_pages+0xd01/0x1040 folio_alloc+0x42/0x120 mm/mempolicy.c:2308 filemap_alloc_folio+0xa5/0x430 mm/filemap.c:979 __filemap_get_folio+0x908/0x13a0 mm/filemap.c:1933 pagecache_get_page+0x4e/0x200 mm/folio-compat.c:99 find_or_create_page include/linux/pagemap.h:639 [inline] alloc_extent_buffer+0x6e8/0x2e60 fs/btrfs/extent_io.c:3601 btrfs_find_create_tree_block+0x46/0x60 fs/btrfs/disk-io.c:588 btrfs_init_new_buffer fs/btrfs/extent-tree.c:4771 [inline] btrfs_alloc_tree_block+0x344/0x1d10 fs/btrfs/extent-tree.c:4892 __btrfs_cow_block+0x57a/0x2200 fs/btrfs/ctree.c:546 btrfs_cow_block+0x7cc/0xa00 fs/btrfs/ctree.c:712 btrfs_search_slot+0x16fb/0x4680 fs/btrfs/ctree.c:2194 btrfs_insert_empty_items+0xb3/0x220 fs/btrfs/ctree.c:4376 btrfs_insert_empty_item fs/btrfs/ctree.h:636 [inline] btrfs_insert_inode_ref+0x29b/0x1650 fs/btrfs/inode-item.c:331 btrfs_rename fs/btrfs/inode.c:9224 [inline] btrfs_rename2+0x3ff8/0x5c60 fs/btrfs/inode.c:9334 vfs_rename+0x1a79/0x1fa0 fs/namei.c:4857 do_renameat2+0x16ae/0x1ca0 fs/namei.c:5009 __do_sys_rename fs/namei.c:5055 [inline] __se_sys_rename fs/namei.c:5053 [inline] __ia32_sys_rename+0xdc/0x130 fs/namei.c:5053 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178 do_fast_syscall_32+0x37/0x80 arch/x86/entry/common.c:203 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:246 entry_SYSENTER_compat_after_hwframe+0x70/0x82 CPU: 1 PID: 5425 Comm: syz-executor.2 Not tainted 6.5.0-rc7-syzkaller-00168-g7d2f353b2682 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 =====================================================