=====================================================
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+0xa67/0x17f0 mm/page_io.c:279
 shmem_writepage+0x2117/0x2450 mm/shmem.c:1572
 pageout mm/vmscan.c:689 [inline]
 shrink_folio_list+0x5e7f/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+0x25e8/0x42f0 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:
 get_next_data lib/842/842_compress.c:412 [inline]
 sw842_compress+0xdfc/0x5990 lib/842/842_compress.c:522
 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+0xa67/0x17f0 mm/page_io.c:279
 shmem_writepage+0x2117/0x2450 mm/shmem.c:1572
 pageout mm/vmscan.c:689 [inline]
 shrink_folio_list+0x5e7f/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+0x25e8/0x42f0 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:4068
 shmem_file_write_iter+0x2ba/0x2f0 mm/shmem.c:3269
 do_iter_readv_writev+0x88a/0xa30
 vfs_iter_write+0x44d/0xd40 fs/read_write.c:974
 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:1909 [inline]
 loop_process_work+0x15fb/0x3760 drivers/block/loop.c:1944
 loop_workfn+0x48/0x60 drivers/block/loop.c:1968
 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
 indx_write fs/ntfs3/index.c:1027 [inline]
 indx_update_dup+0xd81/0xf80 fs/ntfs3/index.c:2694
 ni_update_parent+0x12de/0x14b0 fs/ntfs3/frecord.c:3298
 ni_write_inode+0x1d01/0x1df0 fs/ntfs3/frecord.c:3389
 ntfs3_write_inode+0x94/0xb0 fs/ntfs3/inode.c:1016
 write_inode fs/fs-writeback.c:1525 [inline]
 __writeback_single_inode+0x8da/0x1290 fs/fs-writeback.c:1745
 writeback_single_inode+0x32f/0x9c0 fs/fs-writeback.c:1801
 sync_inode_metadata+0xa4/0xe0 fs/fs-writeback.c:2871
 __generic_file_fsync+0x27f/0x440 fs/libfs.c:1543
 generic_file_fsync+0x79/0x180 fs/libfs.c:1573
 vfs_fsync_range+0x1f9/0x260 fs/sync.c:187
 generic_write_sync include/linux/fs.h:2904 [inline]
 ntfs_file_write_iter+0xd40/0xe60 fs/ntfs3/file.c:1265
 iter_file_splice_write+0x122d/0x1da0 fs/splice.c:743
 ntfs_file_splice_write+0x1f2/0x300 fs/ntfs3/file.c:1373
 do_splice_from fs/splice.c:941 [inline]
 direct_splice_actor+0x337/0x7f0 fs/splice.c:1164
 splice_direct_to_actor+0x946/0x1430 fs/splice.c:1108
 do_splice_direct_actor fs/splice.c:1207 [inline]
 do_splice_direct+0x1fd/0x340 fs/splice.c:1233
 do_sendfile+0x9e7/0x10a0 fs/read_write.c:1363
 __do_compat_sys_sendfile fs/read_write.c:1445 [inline]
 __se_compat_sys_sendfile+0x244/0x2d0 fs/read_write.c:1428
 __ia32_compat_sys_sendfile+0xbd/0x110 fs/read_write.c:1428
 ia32_sys_call+0x3f4a/0x4180 arch/x86/include/generated/asm/syscalls_32.h:188
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0xb0/0x110 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x38/0x80 arch/x86/entry/common.c:411
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:449
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

Uninit was stored to memory at:
 ntfs_read_run_nb+0x786/0x1070 fs/ntfs3/fsntfs.c:1252
 ntfs_read_bh+0x64/0xde0 fs/ntfs3/fsntfs.c:1313
 indx_read+0x44e/0x17b0 fs/ntfs3/index.c:1067
 indx_find+0xd12/0x1440 fs/ntfs3/index.c:1181
 indx_update_dup+0x607/0xf80 fs/ntfs3/index.c:2666
 ni_update_parent+0x12de/0x14b0 fs/ntfs3/frecord.c:3298
 ni_write_inode+0x1d01/0x1df0 fs/ntfs3/frecord.c:3389
 ntfs3_write_inode+0x94/0xb0 fs/ntfs3/inode.c:1016
 write_inode fs/fs-writeback.c:1525 [inline]
 __writeback_single_inode+0x8da/0x1290 fs/fs-writeback.c:1745
 writeback_single_inode+0x32f/0x9c0 fs/fs-writeback.c:1801
 sync_inode_metadata+0xa4/0xe0 fs/fs-writeback.c:2871
 __generic_file_fsync+0x27f/0x440 fs/libfs.c:1543
 generic_file_fsync+0x79/0x180 fs/libfs.c:1573
 vfs_fsync_range+0x1f9/0x260 fs/sync.c:187
 generic_write_sync include/linux/fs.h:2904 [inline]
 ntfs_file_write_iter+0xd40/0xe60 fs/ntfs3/file.c:1265
 iter_file_splice_write+0x122d/0x1da0 fs/splice.c:743
 ntfs_file_splice_write+0x1f2/0x300 fs/ntfs3/file.c:1373
 do_splice_from fs/splice.c:941 [inline]
 direct_splice_actor+0x337/0x7f0 fs/splice.c:1164
 splice_direct_to_actor+0x946/0x1430 fs/splice.c:1108
 do_splice_direct_actor fs/splice.c:1207 [inline]
 do_splice_direct+0x1fd/0x340 fs/splice.c:1233
 do_sendfile+0x9e7/0x10a0 fs/read_write.c:1363
 __do_compat_sys_sendfile fs/read_write.c:1445 [inline]
 __se_compat_sys_sendfile+0x244/0x2d0 fs/read_write.c:1428
 __ia32_compat_sys_sendfile+0xbd/0x110 fs/read_write.c:1428
 ia32_sys_call+0x3f4a/0x4180 arch/x86/include/generated/asm/syscalls_32.h:188
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0xb0/0x110 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x38/0x80 arch/x86/entry/common.c:411
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:449
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

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_buffer+0xd8f/0x2010 fs/ntfs3/index.c:1811
 indx_insert_entry+0xa3c/0xee0 fs/ntfs3/index.c:1988
 ntfs_create_inode+0x438d/0x4e40 fs/ntfs3/inode.c:1653
 ntfs_create+0x56/0x70 fs/ntfs3/namei.c:110
 lookup_open fs/namei.c:3649 [inline]
 open_last_lookups fs/namei.c:3748 [inline]
 path_openat+0x2e9e/0x6200 fs/namei.c:3984
 do_filp_open+0x268/0x600 fs/namei.c:4014
 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1402
 do_sys_open fs/open.c:1417 [inline]
 __do_compat_sys_openat fs/open.c:1479 [inline]
 __se_compat_sys_openat fs/open.c:1477 [inline]
 __ia32_compat_sys_openat+0x298/0x300 fs/open.c:1477
 ia32_sys_call+0x2fb4/0x4180 arch/x86/include/generated/asm/syscalls_32.h:296
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0xb0/0x110 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x38/0x80 arch/x86/entry/common.c:411
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:449
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

Uninit was stored to memory at:
 hdr_insert_de fs/ntfs3/index.c:838 [inline]
 indx_insert_into_buffer+0xcdf/0x2010 fs/ntfs3/index.c:1807
 indx_insert_entry+0xa3c/0xee0 fs/ntfs3/index.c:1988
 ntfs_create_inode+0x438d/0x4e40 fs/ntfs3/inode.c:1653
 ntfs_create+0x56/0x70 fs/ntfs3/namei.c:110
 lookup_open fs/namei.c:3649 [inline]
 open_last_lookups fs/namei.c:3748 [inline]
 path_openat+0x2e9e/0x6200 fs/namei.c:3984
 do_filp_open+0x268/0x600 fs/namei.c:4014
 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1402
 do_sys_open fs/open.c:1417 [inline]
 __do_compat_sys_openat fs/open.c:1479 [inline]
 __se_compat_sys_openat fs/open.c:1477 [inline]
 __ia32_compat_sys_openat+0x298/0x300 fs/open.c:1477
 ia32_sys_call+0x2fb4/0x4180 arch/x86/include/generated/asm/syscalls_32.h:296
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0xb0/0x110 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x38/0x80 arch/x86/entry/common.c:411
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:449
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

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+0x5f5/0x4e40 fs/ntfs3/inode.c:1290
 ntfs_create+0x56/0x70 fs/ntfs3/namei.c:110
 lookup_open fs/namei.c:3649 [inline]
 open_last_lookups fs/namei.c:3748 [inline]
 path_openat+0x2e9e/0x6200 fs/namei.c:3984
 do_filp_open+0x268/0x600 fs/namei.c:4014
 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1402
 do_sys_open fs/open.c:1417 [inline]
 __do_compat_sys_openat fs/open.c:1479 [inline]
 __se_compat_sys_openat fs/open.c:1477 [inline]
 __ia32_compat_sys_openat+0x298/0x300 fs/open.c:1477
 ia32_sys_call+0x2fb4/0x4180 arch/x86/include/generated/asm/syscalls_32.h:296
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0xb0/0x110 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x38/0x80 arch/x86/entry/common.c:411
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:449
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e

CPU: 0 UID: 0 PID: 80 Comm: kswapd0 Tainted: G        W          6.12.0-syzkaller-08446-g228a1157fb9f #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
=====================================================