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BUG: KMSAN: uninit-value in sw842_compress+0xe8d/0x5990 lib/842/842_compress.c:528
 sw842_compress+0xe8d/0x5990 lib/842/842_compress.c:528
 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:1567
 pageout mm/vmscan.c:688 [inline]
 shrink_folio_list+0x5e78/0x7dd0 mm/vmscan.c:1366
 evict_folios+0x9813/0xbaf0 mm/vmscan.c:4583
 try_to_shrink_lruvec+0x13a3/0x1750 mm/vmscan.c:4778
 shrink_one+0x646/0xd20 mm/vmscan.c:4816
 shrink_many mm/vmscan.c:4879 [inline]
 lru_gen_shrink_node mm/vmscan.c:4957 [inline]
 shrink_node+0x451b/0x5170 mm/vmscan.c:5937
 kswapd_shrink_node mm/vmscan.c:6765 [inline]
 balance_pgdat mm/vmscan.c:6957 [inline]
 kswapd+0x25e2/0x42f0 mm/vmscan.c:7226
 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:481
 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:3216
 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
 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+0x1cf4/0x1de0 fs/ntfs3/frecord.c:3389
 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
 wb_writeback+0x4df/0xcb0 fs/fs-writeback.c:2134
 wb_do_writeback fs/fs-writeback.c:2281 [inline]
 wb_workfn+0x40b/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:
 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+0x1cf4/0x1de0 fs/ntfs3/frecord.c:3389
 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
 wb_writeback+0x4df/0xcb0 fs/fs-writeback.c:2134
 wb_do_writeback fs/fs-writeback.c:2281 [inline]
 wb_workfn+0x40b/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:
 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/0x4e50 fs/ntfs3/inode.c:1653
 ntfs_symlink+0x12c/0x1b0 fs/ntfs3/namei.c:197
 vfs_symlink+0x1ed/0x460 fs/namei.c:4615
 do_symlinkat+0x257/0x8a0 fs/namei.c:4641
 __do_sys_symlink fs/namei.c:4662 [inline]
 __se_sys_symlink fs/namei.c:4660 [inline]
 __x64_sys_symlink+0xe0/0x140 fs/namei.c:4660
 x64_sys_call+0x30e8/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:89
 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_buffer+0xcdf/0x2010 fs/ntfs3/index.c:1807
 indx_insert_entry+0xa3c/0xee0 fs/ntfs3/index.c:1988
 ntfs_create_inode+0x438d/0x4e50 fs/ntfs3/inode.c:1653
 ntfs_symlink+0x12c/0x1b0 fs/ntfs3/namei.c:197
 vfs_symlink+0x1ed/0x460 fs/namei.c:4615
 do_symlinkat+0x257/0x8a0 fs/namei.c:4641
 __do_sys_symlink fs/namei.c:4662 [inline]
 __se_sys_symlink fs/namei.c:4660 [inline]
 __x64_sys_symlink+0xe0/0x140 fs/namei.c:4660
 x64_sys_call+0x30e8/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:89
 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]
 kmem_cache_alloc_noprof+0x637/0xb20 mm/slub.c:4141
 ntfs_create_inode+0x5f5/0x4e50 fs/ntfs3/inode.c:1290
 ntfs_symlink+0x12c/0x1b0 fs/ntfs3/namei.c:197
 vfs_symlink+0x1ed/0x460 fs/namei.c:4615
 do_symlinkat+0x257/0x8a0 fs/namei.c:4641
 __do_sys_symlink fs/namei.c:4662 [inline]
 __se_sys_symlink fs/namei.c:4660 [inline]
 __x64_sys_symlink+0xe0/0x140 fs/namei.c:4660
 x64_sys_call+0x30e8/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:89
 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: 1 UID: 0 PID: 79 Comm: kswapd0 Not tainted 6.12.0-rc4-syzkaller-00261-g850925a8133c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
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