===================================================== BUG: KMSAN: uninit-value in crc32_body lib/crc32.c:110 [inline] BUG: KMSAN: uninit-value in crc32_le_generic lib/crc32.c:179 [inline] BUG: KMSAN: uninit-value in __crc32c_le_base+0x43c/0xd80 lib/crc32.c:201 crc32_body lib/crc32.c:110 [inline] crc32_le_generic lib/crc32.c:179 [inline] __crc32c_le_base+0x43c/0xd80 lib/crc32.c:201 chksum_update_arch+0x5b/0xd0 crypto/crc32c_generic.c:97 crypto_shash_update+0x79/0xa0 crypto/shash.c:52 csum_tree_block+0x35f/0x5d0 fs/btrfs/disk-io.c:96 btree_csum_one_bio+0x4d5/0xeb0 fs/btrfs/disk-io.c:294 btrfs_bio_csum fs/btrfs/bio.c:518 [inline] btrfs_submit_chunk fs/btrfs/bio.c:751 [inline] btrfs_submit_bbio+0x2258/0x2bf0 fs/btrfs/bio.c:792 write_one_eb+0x13fa/0x1570 fs/btrfs/extent_io.c:1774 submit_eb_page fs/btrfs/extent_io.c:1931 [inline] btree_write_cache_pages+0x1bec/0x2380 fs/btrfs/extent_io.c:1981 btree_writepages+0x84/0x270 fs/btrfs/disk-io.c:520 do_writepages+0x427/0xc30 mm/page-writeback.c:2708 filemap_fdatawrite_wbc mm/filemap.c:388 [inline] __filemap_fdatawrite_range mm/filemap.c:421 [inline] filemap_fdatawrite_range+0x220/0x270 mm/filemap.c:439 btrfs_write_marked_extents+0x2d8/0x610 fs/btrfs/transaction.c:1149 btrfs_sync_log+0x9fd/0x3830 fs/btrfs/tree-log.c:2991 btrfs_sync_file+0x1a4c/0x2180 fs/btrfs/file.c:1708 vfs_fsync_range+0x1f9/0x260 fs/sync.c:187 generic_write_sync include/linux/fs.h:2904 [inline] btrfs_do_write_iter+0xa29/0xb60 fs/btrfs/file.c:1407 btrfs_file_write_iter+0x38/0x50 fs/btrfs/file.c:1417 __kernel_write_iter+0x675/0xd20 fs/read_write.c:612 __kernel_write+0xca/0x100 fs/read_write.c:632 __dump_emit fs/coredump.c:807 [inline] dump_emit+0x3aa/0x5d0 fs/coredump.c:844 elf_core_dump+0x47bb/0x5c30 fs/binfmt_elf.c:2081 do_coredump+0x45d3/0x59d0 fs/coredump.c:758 get_signal+0x24f1/0x2b70 kernel/signal.c:3002 arch_do_signal_or_restart+0x53/0xcb0 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] irqentry_exit_to_user_mode+0xb9/0x150 kernel/entry/common.c:231 irqentry_exit+0x16/0x60 kernel/entry/common.c:334 exc_page_fault+0x526/0x700 arch/x86/mm/fault.c:1542 asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623 Uninit was stored to memory at: __write_extent_buffer+0x1aa/0x800 fs/btrfs/extent_io.c:3769 write_extent_buffer fs/btrfs/extent_io.c:3796 [inline] copy_extent_buffer_full+0x3ce/0x550 fs/btrfs/extent_io.c:3844 btrfs_force_cow_block+0x71d/0x2b30 fs/btrfs/ctree.c:581 btrfs_cow_block+0x9c0/0xc10 fs/btrfs/ctree.c:755 btrfs_search_slot+0x1793/0x4b10 fs/btrfs/ctree.c:2153 btrfs_insert_empty_items+0xb4/0x220 fs/btrfs/ctree.c:4351 copy_items+0x164d/0x20e0 fs/btrfs/tree-log.c:4515 copy_inode_items_to_log fs/btrfs/tree-log.c:5993 [inline] btrfs_log_inode+0x3409/0x8620 fs/btrfs/tree-log.c:6612 btrfs_log_inode_parent+0x1236/0x1c30 fs/btrfs/tree-log.c:7105 btrfs_log_dentry_safe+0x9a/0x100 fs/btrfs/tree-log.c:7206 btrfs_sync_file+0x1676/0x2180 fs/btrfs/file.c:1670 vfs_fsync_range+0x1f9/0x260 fs/sync.c:187 generic_write_sync include/linux/fs.h:2904 [inline] btrfs_do_write_iter+0xa29/0xb60 fs/btrfs/file.c:1407 btrfs_file_write_iter+0x38/0x50 fs/btrfs/file.c:1417 __kernel_write_iter+0x675/0xd20 fs/read_write.c:612 __kernel_write+0xca/0x100 fs/read_write.c:632 __dump_emit fs/coredump.c:807 [inline] dump_emit+0x3aa/0x5d0 fs/coredump.c:844 elf_core_dump+0x47bb/0x5c30 fs/binfmt_elf.c:2081 do_coredump+0x45d3/0x59d0 fs/coredump.c:758 get_signal+0x24f1/0x2b70 kernel/signal.c:3002 arch_do_signal_or_restart+0x53/0xcb0 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] irqentry_exit_to_user_mode+0xb9/0x150 kernel/entry/common.c:231 irqentry_exit+0x16/0x60 kernel/entry/common.c:334 exc_page_fault+0x526/0x700 arch/x86/mm/fault.c:1542 asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623 Uninit was created at: __alloc_pages_noprof+0x9a7/0xe00 mm/page_alloc.c:4776 alloc_pages_bulk_noprof+0x1a28/0x20b0 mm/page_alloc.c:4701 btrfs_alloc_page_array fs/btrfs/extent_io.c:635 [inline] alloc_eb_folio_array+0x19c/0x750 fs/btrfs/extent_io.c:659 alloc_extent_buffer+0x75a/0x3ba0 fs/btrfs/extent_io.c:3049 btrfs_find_create_tree_block+0x46/0x60 fs/btrfs/disk-io.c:614 btrfs_init_new_buffer fs/btrfs/extent-tree.c:5019 [inline] btrfs_alloc_tree_block+0x415/0x1990 fs/btrfs/extent-tree.c:5132 btrfs_alloc_log_tree_node fs/btrfs/disk-io.c:950 [inline] btrfs_add_log_tree+0x1b7/0x7a0 fs/btrfs/disk-io.c:998 start_log_trans fs/btrfs/tree-log.c:227 [inline] btrfs_log_inode_parent+0xa87/0x1c30 fs/btrfs/tree-log.c:7101 btrfs_log_dentry_safe+0x9a/0x100 fs/btrfs/tree-log.c:7206 btrfs_sync_file+0x1676/0x2180 fs/btrfs/file.c:1670 vfs_fsync_range+0x1f9/0x260 fs/sync.c:187 generic_write_sync include/linux/fs.h:2904 [inline] btrfs_do_write_iter+0xa29/0xb60 fs/btrfs/file.c:1407 btrfs_file_write_iter+0x38/0x50 fs/btrfs/file.c:1417 __kernel_write_iter+0x675/0xd20 fs/read_write.c:612 __kernel_write+0xca/0x100 fs/read_write.c:632 do_acct_process+0x1de5/0x2490 kernel/acct.c:539 slow_acct_process+0x40b/0x5b0 kernel/acct.c:597 acct_process+0x10f/0x140 kernel/acct.c:621 do_exit+0xe10/0x4330 kernel/exit.c:928 __do_sys_exit kernel/exit.c:1054 [inline] __se_sys_exit kernel/exit.c:1052 [inline] __x64_sys_exit+0x3d/0x50 kernel/exit.c:1052 x64_sys_call+0x3c14/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:61 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: 6982 Comm: syz.5.185 Tainted: G W 6.13.0-rc7-syzkaller-00102-gce69b4019001 #0 Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 =====================================================