===================================================== BUG: KMSAN: uninit-value in process_next lib/842/842_compress.c:456 [inline] BUG: KMSAN: uninit-value in sw842_compress+0x1767/0x5990 lib/842/842_compress.c:543 process_next lib/842/842_compress.c:456 [inline] sw842_compress+0x1767/0x5990 lib/842/842_compress.c:543 crypto842_scompress+0x4f/0x70 crypto/842.c:78 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 mm/zswap.c:918 [inline] zswap_store+0x1cea/0x3650 mm/zswap.c:1460 swap_writepage+0xa4f/0x12b0 mm/page_io.c:271 shmem_writepage+0x2117/0x2450 mm/shmem.c:1569 pageout mm/vmscan.c:689 [inline] shrink_folio_list+0x5e78/0x7dd0 mm/vmscan.c:1367 evict_folios+0x9813/0xbaf0 mm/vmscan.c:4589 try_to_shrink_lruvec+0x13a3/0x1750 mm/vmscan.c:4784 shrink_one+0x646/0xd20 mm/vmscan.c:4822 shrink_many mm/vmscan.c:4885 [inline] lru_gen_shrink_node mm/vmscan.c:4963 [inline] shrink_node+0x451b/0x5170 mm/vmscan.c:5943 kswapd_shrink_node mm/vmscan.c:6771 [inline] balance_pgdat mm/vmscan.c:6963 [inline] kswapd+0x25e2/0x42f0 mm/vmscan.c:7232 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:123 [inline] iterate_and_advance2 include/linux/iov_iter.h:304 [inline] iterate_and_advance include/linux/iov_iter.h:328 [inline] __copy_from_iter lib/iov_iter.c:249 [inline] copy_page_from_iter_atomic+0x1299/0x30c0 lib/iov_iter.c:483 copy_folio_from_iter_atomic include/linux/uio.h:201 [inline] generic_perform_write+0x8d1/0x1080 mm/filemap.c:4066 shmem_file_write_iter+0x2ba/0x2f0 mm/shmem.c:3218 do_iter_readv_writev+0x88a/0xa30 vfs_iter_write+0x44d/0xd40 fs/read_write.c:988 lo_write_bvec drivers/block/loop.c:243 [inline] lo_write_simple drivers/block/loop.c:264 [inline] do_req_filebacked drivers/block/loop.c:511 [inline] loop_handle_cmd drivers/block/loop.c:1910 [inline] loop_process_work+0x15e6/0x3750 drivers/block/loop.c:1945 loop_rootcg_workfn+0x2b/0x40 drivers/block/loop.c:1976 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3310 worker_thread+0xea7/0x14f0 kernel/workqueue.c:3391 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 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_sb_inodes+0xa34/0x1c20 fs/fs-writeback.c:1954 __writeback_inodes_wb+0x14c/0x440 fs/fs-writeback.c:2025 wb_writeback+0x50b/0xcb0 fs/fs-writeback.c:2136 wb_check_old_data_flush fs/fs-writeback.c:2240 [inline] wb_do_writeback fs/fs-writeback.c:2293 [inline] wb_workfn+0x110c/0x1940 fs/fs-writeback.c:2321 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3310 worker_thread+0xea7/0x14f0 kernel/workqueue.c:3391 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: indx_insert_into_root+0x2eee/0x37d0 fs/ntfs3/index.c:1710 indx_insert_entry+0xe1d/0xee0 fs/ntfs3/index.c:1982 ntfs_create_inode+0x438d/0x4e50 fs/ntfs3/inode.c:1653 ntfs_create+0x56/0x70 fs/ntfs3/namei.c:110 lookup_open fs/namei.c:3595 [inline] open_last_lookups fs/namei.c:3694 [inline] path_openat+0x2e9e/0x6200 fs/namei.c:3930 do_filp_open+0x20e/0x590 fs/namei.c:3960 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_creat fs/open.c:1508 [inline] __se_sys_creat fs/open.c:1502 [inline] __x64_sys_creat+0xe6/0x140 fs/open.c:1502 x64_sys_call+0x3a6c/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:86 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: kmemdup_noprof+0x82/0xc0 mm/util.c:135 indx_insert_into_root+0x96d/0x37d0 fs/ntfs3/index.c:1628 indx_insert_entry+0xe1d/0xee0 fs/ntfs3/index.c:1982 ntfs_create_inode+0x438d/0x4e50 fs/ntfs3/inode.c:1653 ntfs_create+0x56/0x70 fs/ntfs3/namei.c:110 lookup_open fs/namei.c:3595 [inline] open_last_lookups fs/namei.c:3694 [inline] path_openat+0x2e9e/0x6200 fs/namei.c:3930 do_filp_open+0x20e/0x590 fs/namei.c:3960 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_creat fs/open.c:1508 [inline] __se_sys_creat fs/open.c:1502 [inline] __x64_sys_creat+0xe6/0x140 fs/open.c:1502 x64_sys_call+0x3a6c/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:86 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: indx_insert_into_root+0x2eee/0x37d0 fs/ntfs3/index.c:1710 indx_insert_entry+0xe1d/0xee0 fs/ntfs3/index.c:1982 ntfs_create_inode+0x438d/0x4e50 fs/ntfs3/inode.c:1653 ntfs_create+0x56/0x70 fs/ntfs3/namei.c:110 vfs_create+0x3e7/0x660 fs/namei.c:3294 do_mknodat+0x782/0xb90 fs/namei.c:4185 __do_sys_mknod fs/namei.c:4218 [inline] __se_sys_mknod fs/namei.c:4216 [inline] __x64_sys_mknod+0xc4/0x120 fs/namei.c:4216 x64_sys_call+0x2d37/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:134 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: kmemdup_noprof+0x82/0xc0 mm/util.c:135 indx_insert_into_root+0x96d/0x37d0 fs/ntfs3/index.c:1628 indx_insert_entry+0xe1d/0xee0 fs/ntfs3/index.c:1982 ntfs_create_inode+0x438d/0x4e50 fs/ntfs3/inode.c:1653 ntfs_create+0x56/0x70 fs/ntfs3/namei.c:110 vfs_create+0x3e7/0x660 fs/namei.c:3294 do_mknodat+0x782/0xb90 fs/namei.c:4185 __do_sys_mknod fs/namei.c:4218 [inline] __se_sys_mknod fs/namei.c:4216 [inline] __x64_sys_mknod+0xc4/0x120 fs/namei.c:4216 x64_sys_call+0x2d37/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:134 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: hdr_insert_de fs/ntfs3/index.c:838 [inline] indx_insert_into_root+0x199b/0x37d0 fs/ntfs3/index.c:1619 indx_insert_entry+0xe1d/0xee0 fs/ntfs3/index.c:1982 ntfs_create_inode+0x438d/0x4e50 fs/ntfs3/inode.c:1653 ntfs_create+0x56/0x70 fs/ntfs3/namei.c:110 lookup_open fs/namei.c:3595 [inline] open_last_lookups fs/namei.c:3694 [inline] path_openat+0x2e9e/0x6200 fs/namei.c:3930 do_filp_open+0x20e/0x590 fs/namei.c:3960 file_open_name fs/open.c:1360 [inline] filp_open+0x2b5/0x2f0 fs/open.c:1380 do_coredump+0x4056/0x54e0 fs/coredump.c:699 get_signal+0x267a/0x2d00 kernel/signal.c:2902 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:328 [inline] irqentry_exit_to_user_mode+0xac/0x160 kernel/entry/common.c:231 irqentry_exit+0x16/0x60 kernel/entry/common.c:334 exc_general_protection+0x2e6/0x4b0 arch/x86/kernel/traps.c:693 asm_exc_general_protection+0x2b/0x30 arch/x86/include/asm/idtentry.h:617 Uninit was created at: slab_post_alloc_hook mm/slub.c:4091 [inline] slab_alloc_node mm/slub.c:4134 [inline] kmem_cache_alloc_noprof+0x637/0xb20 mm/slub.c:4141 ntfs_create_inode+0x5f5/0x4e50 fs/ntfs3/inode.c:1290 ntfs_create+0x56/0x70 fs/ntfs3/namei.c:110 lookup_open fs/namei.c:3595 [inline] open_last_lookups fs/namei.c:3694 [inline] path_openat+0x2e9e/0x6200 fs/namei.c:3930 do_filp_open+0x20e/0x590 fs/namei.c:3960 file_open_name fs/open.c:1360 [inline] filp_open+0x2b5/0x2f0 fs/open.c:1380 do_coredump+0x4056/0x54e0 fs/coredump.c:699 get_signal+0x267a/0x2d00 kernel/signal.c:2902 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:328 [inline] irqentry_exit_to_user_mode+0xac/0x160 kernel/entry/common.c:231 irqentry_exit+0x16/0x60 kernel/entry/common.c:334 exc_general_protection+0x2e6/0x4b0 arch/x86/kernel/traps.c:693 asm_exc_general_protection+0x2b/0x30 arch/x86/include/asm/idtentry.h:617 CPU: 1 UID: 0 PID: 81 Comm: kswapd0 Tainted: G W 6.12.0-rc6-syzkaller-00225-g50643bbc9eb6 #0 Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 =====================================================