===================================================== BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline] BUG: KMSAN: kernel-infoleak in copy_to_user_iter lib/iov_iter.c:24 [inline] BUG: KMSAN: kernel-infoleak in iterate_ubuf include/linux/iov_iter.h:30 [inline] BUG: KMSAN: kernel-infoleak in iterate_and_advance2 include/linux/iov_iter.h:300 [inline] BUG: KMSAN: kernel-infoleak in iterate_and_advance include/linux/iov_iter.h:328 [inline] BUG: KMSAN: kernel-infoleak in _copy_to_iter+0x2f3/0x2b30 lib/iov_iter.c:185 instrument_copy_to_user include/linux/instrumented.h:114 [inline] copy_to_user_iter lib/iov_iter.c:24 [inline] iterate_ubuf include/linux/iov_iter.h:30 [inline] iterate_and_advance2 include/linux/iov_iter.h:300 [inline] iterate_and_advance include/linux/iov_iter.h:328 [inline] _copy_to_iter+0x2f3/0x2b30 lib/iov_iter.c:185 copy_page_to_iter+0x419/0x880 lib/iov_iter.c:362 copy_folio_to_iter include/linux/uio.h:189 [inline] filemap_read+0xc13/0x1500 mm/filemap.c:2696 blkdev_read_iter+0x6bb/0x8e0 block/fops.c:765 new_sync_read fs/read_write.c:488 [inline] vfs_read+0xcdf/0xf50 fs/read_write.c:569 ksys_read+0x24f/0x4c0 fs/read_write.c:712 __do_sys_read fs/read_write.c:722 [inline] __se_sys_read fs/read_write.c:720 [inline] __x64_sys_read+0x93/0xe0 fs/read_write.c:720 x64_sys_call+0x3055/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:1 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 stored to memory at: ntfs_write_bh+0x652/0xdb0 fs/ntfs3/fsntfs.c:1450 mi_write+0xda/0x2d0 fs/ntfs3/record.c:387 ni_write_inode+0xd80/0x1de0 fs/ntfs3/frecord.c:3437 ntfs3_write_inode+0x94/0xb0 fs/ntfs3/inode.c:1016 write_inode fs/fs-writeback.c:1503 [inline] __writeback_single_inode+0x8da/0x1290 fs/fs-writeback.c:1723 writeback_single_inode+0x32f/0x9c0 fs/fs-writeback.c:1779 sync_inode_metadata+0xa4/0xe0 fs/fs-writeback.c:2849 __generic_file_fsync+0x27f/0x440 fs/libfs.c:1539 generic_file_fsync+0x79/0x180 fs/libfs.c:1569 vfs_fsync_range+0x1f9/0x260 fs/sync.c:188 generic_write_sync include/linux/fs.h:2871 [inline] ntfs_file_write_iter+0xd40/0xe60 fs/ntfs3/file.c:1265 do_iter_readv_writev+0x88a/0xa30 vfs_writev+0x56a/0x14f0 fs/read_write.c:1064 do_pwritev fs/read_write.c:1165 [inline] __do_sys_pwritev fs/read_write.c:1212 [inline] __se_sys_pwritev fs/read_write.c:1207 [inline] __x64_sys_pwritev+0x2e5/0x500 fs/read_write.c:1207 x64_sys_call+0x34d8/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:297 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 stored to memory at: al_update+0x388/0x4d0 fs/ntfs3/attrlist.c:404 ni_write_inode+0x1aea/0x1de0 fs/ntfs3/frecord.c:3405 ntfs3_write_inode+0x94/0xb0 fs/ntfs3/inode.c:1016 write_inode fs/fs-writeback.c:1503 [inline] __writeback_single_inode+0x8da/0x1290 fs/fs-writeback.c:1723 writeback_single_inode+0x32f/0x9c0 fs/fs-writeback.c:1779 sync_inode_metadata+0xa4/0xe0 fs/fs-writeback.c:2849 __generic_file_fsync+0x27f/0x440 fs/libfs.c:1539 generic_file_fsync+0x79/0x180 fs/libfs.c:1569 vfs_fsync_range+0x1f9/0x260 fs/sync.c:188 generic_write_sync include/linux/fs.h:2871 [inline] ntfs_file_write_iter+0xd40/0xe60 fs/ntfs3/file.c:1265 do_iter_readv_writev+0x88a/0xa30 vfs_writev+0x56a/0x14f0 fs/read_write.c:1064 do_pwritev fs/read_write.c:1165 [inline] __do_sys_pwritev fs/read_write.c:1212 [inline] __se_sys_pwritev fs/read_write.c:1207 [inline] __x64_sys_pwritev+0x2e5/0x500 fs/read_write.c:1207 x64_sys_call+0x34d8/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:297 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: slab_post_alloc_hook mm/slub.c:4091 [inline] slab_alloc_node mm/slub.c:4134 [inline] __do_kmalloc_node mm/slub.c:4263 [inline] __kmalloc_noprof+0x661/0xf30 mm/slub.c:4276 kmalloc_noprof include/linux/slab.h:882 [inline] ni_create_attr_list+0x1b8/0x19d0 fs/ntfs3/frecord.c:822 ni_ins_attr_ext+0x4e6/0x10a0 fs/ntfs3/frecord.c:976 ni_insert_attr fs/ntfs3/frecord.c:1143 [inline] ni_insert_resident fs/ntfs3/frecord.c:1527 [inline] ni_add_name+0xaf1/0x10d0 fs/ntfs3/frecord.c:3112 ntfs_link_inode+0x265/0x310 fs/ntfs3/inode.c:1735 ntfs_link+0x21d/0x500 fs/ntfs3/namei.c:146 vfs_link+0x94c/0xb70 fs/namei.c:4739 do_linkat+0x4f5/0xfd0 fs/namei.c:4809 __do_sys_link fs/namei.c:4843 [inline] __se_sys_link fs/namei.c:4841 [inline] __x64_sys_link+0xe8/0x140 fs/namei.c:4841 x64_sys_call+0x2853/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:87 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 Bytes 202-207 of 1024 are uninitialized Memory access of size 1024 starts at ffff888032898000 Data copied to user address 0000560fe9783d98 CPU: 0 UID: 0 PID: 5961 Comm: udevd Tainted: G W 6.12.0-rc5-syzkaller-00330-ga33ab3f94f51 #0 Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 =====================================================