===================================================== BUG: KMSAN: uninit-value in lzo1x_1_do_compress+0x19f9/0x2510 lib/lzo/lzo1x_compress.c:178 lzo1x_1_do_compress+0x19f9/0x2510 lib/lzo/lzo1x_compress.c:178 lzogeneric1x_1_compress+0x26a/0x11b0 lib/lzo/lzo1x_compress.c:333 lzo1x_1_compress+0x47/0x80 lib/lzo/lzo1x_compress.c:383 __lzo_compress crypto/lzo.c:58 [inline] lzo_scompress+0x98/0x180 crypto/lzo.c:79 scomp_acomp_comp_decomp+0x7c6/0xb90 scomp_acomp_compress+0x32/0x40 crypto/scompress.c:187 crypto_acomp_compress include/crypto/acompress.h:251 [inline] zswap_compress+0x377/0xb10 mm/zswap.c:1040 zswap_store+0x2180/0x2ca0 mm/zswap.c:1580 swap_writepage+0x126/0x4c0 mm/page_io.c:198 shmem_writepage+0x1826/0x1f70 mm/shmem.c:1518 pageout mm/vmscan.c:660 [inline] shrink_folio_list+0x4a55/0x7910 mm/vmscan.c:1323 evict_folios+0x9d7f/0xcc20 mm/vmscan.c:4537 try_to_shrink_lruvec+0x160e/0x1a50 mm/vmscan.c:4733 shrink_one+0x66f/0xd40 mm/vmscan.c:4772 shrink_many mm/vmscan.c:4835 [inline] lru_gen_shrink_node mm/vmscan.c:4935 [inline] shrink_node+0x4856/0x55f0 mm/vmscan.c:5894 kswapd_shrink_node mm/vmscan.c:6704 [inline] balance_pgdat mm/vmscan.c:6895 [inline] kswapd+0x1eba/0x4460 mm/vmscan.c:7164 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 stored to memory at: memcpy_from_iter lib/iov_iter.c:73 [inline] iterate_bvec include/linux/iov_iter.h:122 [inline] iterate_and_advance2 include/linux/iov_iter.h:249 [inline] iterate_and_advance include/linux/iov_iter.h:271 [inline] __copy_from_iter lib/iov_iter.c:249 [inline] copy_page_from_iter_atomic+0x12b7/0x2ae0 lib/iov_iter.c:481 generic_perform_write+0x4c1/0xc60 mm/filemap.c:3982 shmem_file_write_iter+0x2bd/0x2f0 mm/shmem.c:2920 do_iter_readv_writev+0x7e6/0x960 vfs_iter_write+0x459/0xd00 fs/read_write.c:895 lo_write_bvec drivers/block/loop.c:246 [inline] lo_write_simple drivers/block/loop.c:267 [inline] do_req_filebacked drivers/block/loop.c:491 [inline] loop_handle_cmd drivers/block/loop.c:1907 [inline] loop_process_work+0x1502/0x3440 drivers/block/loop.c:1942 loop_rootcg_workfn+0x2b/0x40 drivers/block/loop.c:1973 process_one_work kernel/workqueue.c:3267 [inline] process_scheduled_works+0xa81/0x1bd0 kernel/workqueue.c:3348 worker_thread+0xea5/0x1560 kernel/workqueue.c:3429 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 stored to memory at: ntfs_write_bh+0x652/0xdb0 fs/ntfs3/fsntfs.c:1450 indx_write fs/ntfs3/index.c:1027 [inline] indx_insert_into_root+0x36f4/0x37d0 fs/ntfs3/index.c:1761 indx_insert_entry+0xe1d/0xee0 fs/ntfs3/index.c:1975 ntfs_create_inode+0x4b45/0x5280 fs/ntfs3/inode.c:1683 ntfs_mkdir+0x5c/0xe0 fs/ntfs3/namei.c:222 vfs_mkdir+0x49e/0x710 fs/namei.c:4131 do_mkdirat+0x529/0x810 fs/namei.c:4154 __do_sys_mkdirat fs/namei.c:4169 [inline] __se_sys_mkdirat fs/namei.c:4167 [inline] __x64_sys_mkdirat+0xc8/0x120 fs/namei.c:4167 x64_sys_call+0x28f5/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:259 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was stored to memory at: hdr_insert_de+0x3d4/0x3f0 fs/ntfs3/index.c:838 indx_insert_into_root+0x33f6/0x37d0 fs/ntfs3/index.c:1753 indx_insert_entry+0xe1d/0xee0 fs/ntfs3/index.c:1975 ntfs_create_inode+0x4b45/0x5280 fs/ntfs3/inode.c:1683 ntfs_mkdir+0x5c/0xe0 fs/ntfs3/namei.c:222 vfs_mkdir+0x49e/0x710 fs/namei.c:4131 do_mkdirat+0x529/0x810 fs/namei.c:4154 __do_sys_mkdirat fs/namei.c:4169 [inline] __se_sys_mkdirat fs/namei.c:4167 [inline] __x64_sys_mkdirat+0xc8/0x120 fs/namei.c:4167 x64_sys_call+0x28f5/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:259 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/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:3877 [inline] slab_alloc_node mm/slub.c:3918 [inline] kmem_cache_alloc+0x5b9/0xc20 mm/slub.c:3925 ntfs_create_inode+0x5dd/0x5280 fs/ntfs3/inode.c:1320 ntfs_mkdir+0x5c/0xe0 fs/ntfs3/namei.c:222 vfs_mkdir+0x49e/0x710 fs/namei.c:4131 do_mkdirat+0x529/0x810 fs/namei.c:4154 __do_sys_mkdirat fs/namei.c:4169 [inline] __se_sys_mkdirat fs/namei.c:4167 [inline] __x64_sys_mkdirat+0xc8/0x120 fs/namei.c:4167 x64_sys_call+0x28f5/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:259 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f CPU: 1 PID: 80 Comm: kswapd0 Tainted: G W 6.9.0-syzkaller-02707-g614da38e2f7a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 =====================================================