=====================================================
BUG: KMSAN: uninit-value in check_template lib/842/842_compress.c:391 [inline]
BUG: KMSAN: uninit-value in process_next lib/842/842_compress.c:456 [inline]
BUG: KMSAN: uninit-value in sw842_compress+0x15eb/0x5990 lib/842/842_compress.c:543
 check_template lib/842/842_compress.c:391 [inline]
 process_next lib/842/842_compress.c:456 [inline]
 sw842_compress+0x15eb/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:962 [inline]
 zswap_store_page mm/zswap.c:1462 [inline]
 zswap_store+0x20e9/0x48a0 mm/zswap.c:1569
 swap_writepage+0xa67/0x1950 mm/page_io.c:278
 shmem_writepage+0x2360/0x25a0 mm/shmem.c:1647
 pageout mm/vmscan.c:696 [inline]
 shrink_folio_list+0x5dd2/0x8220 mm/vmscan.c:1402
 evict_folios+0x94ed/0xb9c0 mm/vmscan.c:4660
 try_to_shrink_lruvec+0xc58/0x1080 mm/vmscan.c:4821
 lru_gen_shrink_lruvec mm/vmscan.c:4970 [inline]
 shrink_lruvec+0x49a/0x47c0 mm/vmscan.c:5715
 shrink_node_memcgs mm/vmscan.c:5951 [inline]
 shrink_node+0x105e/0x51c0 mm/vmscan.c:5992
 shrink_zones mm/vmscan.c:6237 [inline]
 do_try_to_free_pages+0x820/0x2550 mm/vmscan.c:6299
 try_to_free_mem_cgroup_pages+0x3fa/0xa60 mm/vmscan.c:6631
 try_charge_memcg+0x71a/0x1780 mm/memcontrol.c:2255
 obj_cgroup_charge_pages+0x2cb/0x640 mm/memcontrol.c:2636
 __memcg_kmem_charge_page+0x151/0x520 mm/memcontrol.c:2663
 __alloc_frozen_pages_noprof+0x93d/0xe00 mm/page_alloc.c:4756
 alloc_pages_mpol+0x4cd/0x890 mm/mempolicy.c:2270
 alloc_frozen_pages_noprof mm/mempolicy.c:2341 [inline]
 alloc_pages_noprof+0x1b5/0x250 mm/mempolicy.c:2361
 io_mem_alloc_compound io_uring/memmap.c:29 [inline]
 io_region_allocate_pages+0x168/0x8b0 io_uring/memmap.c:167
 io_create_region+0x6eb/0x810 io_uring/memmap.c:223
 io_allocate_scq_urings+0x3a2/0xa50 io_uring/io_uring.c:3479
 io_uring_create+0xabc/0x1440 io_uring/io_uring.c:3701
 io_uring_setup io_uring/io_uring.c:3791 [inline]
 __do_sys_io_uring_setup io_uring/io_uring.c:3818 [inline]
 __se_sys_io_uring_setup+0x476/0x4d0 io_uring/io_uring.c:3812
 __x64_sys_io_uring_setup+0x6c/0xa0 io_uring/io_uring.c:3812
 x64_sys_call+0x2e82/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:426
 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:
 get_next_data lib/842/842_compress.c:416 [inline]
 sw842_compress+0xe7d/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:962 [inline]
 zswap_store_page mm/zswap.c:1462 [inline]
 zswap_store+0x20e9/0x48a0 mm/zswap.c:1569
 swap_writepage+0xa67/0x1950 mm/page_io.c:278
 shmem_writepage+0x2360/0x25a0 mm/shmem.c:1647
 pageout mm/vmscan.c:696 [inline]
 shrink_folio_list+0x5dd2/0x8220 mm/vmscan.c:1402
 evict_folios+0x94ed/0xb9c0 mm/vmscan.c:4660
 try_to_shrink_lruvec+0xc58/0x1080 mm/vmscan.c:4821
 lru_gen_shrink_lruvec mm/vmscan.c:4970 [inline]
 shrink_lruvec+0x49a/0x47c0 mm/vmscan.c:5715
 shrink_node_memcgs mm/vmscan.c:5951 [inline]
 shrink_node+0x105e/0x51c0 mm/vmscan.c:5992
 shrink_zones mm/vmscan.c:6237 [inline]
 do_try_to_free_pages+0x820/0x2550 mm/vmscan.c:6299
 try_to_free_mem_cgroup_pages+0x3fa/0xa60 mm/vmscan.c:6631
 try_charge_memcg+0x71a/0x1780 mm/memcontrol.c:2255
 obj_cgroup_charge_pages+0x2cb/0x640 mm/memcontrol.c:2636
 __memcg_kmem_charge_page+0x151/0x520 mm/memcontrol.c:2663
 __alloc_frozen_pages_noprof+0x93d/0xe00 mm/page_alloc.c:4756
 alloc_pages_mpol+0x4cd/0x890 mm/mempolicy.c:2270
 alloc_frozen_pages_noprof mm/mempolicy.c:2341 [inline]
 alloc_pages_noprof+0x1b5/0x250 mm/mempolicy.c:2361
 io_mem_alloc_compound io_uring/memmap.c:29 [inline]
 io_region_allocate_pages+0x168/0x8b0 io_uring/memmap.c:167
 io_create_region+0x6eb/0x810 io_uring/memmap.c:223
 io_allocate_scq_urings+0x3a2/0xa50 io_uring/io_uring.c:3479
 io_uring_create+0xabc/0x1440 io_uring/io_uring.c:3701
 io_uring_setup io_uring/io_uring.c:3791 [inline]
 __do_sys_io_uring_setup io_uring/io_uring.c:3818 [inline]
 __se_sys_io_uring_setup+0x476/0x4d0 io_uring/io_uring.c:3812
 __x64_sys_io_uring_setup+0x6c/0xa0 io_uring/io_uring.c:3812
 x64_sys_call+0x2e82/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:426
 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:
 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:210 [inline]
 generic_perform_write+0x8d1/0x1080 mm/filemap.c:4201
 shmem_file_write_iter+0x2ba/0x2f0 mm/shmem.c:3454
 do_iter_readv_writev+0x93a/0xbc0
 vfs_iter_write+0x44d/0xd60 fs/read_write.c:974
 lo_write_bvec drivers/block/loop.c:245 [inline]
 lo_write_simple drivers/block/loop.c:266 [inline]
 do_req_filebacked drivers/block/loop.c:520 [inline]
 loop_handle_cmd drivers/block/loop.c:1929 [inline]
 loop_process_work+0x15fb/0x3760 drivers/block/loop.c:1964
 loop_workfn+0x48/0x60 drivers/block/loop.c:1988
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3317
 worker_thread+0xea7/0x14f0 kernel/workqueue.c:3398
 kthread+0x6b9/0xef0 kernel/kthread.c:464
 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:148
 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:1454
 indx_write fs/ntfs3/index.c:1027 [inline]
 indx_insert_into_buffer+0xd9c/0x2010 fs/ntfs3/index.c:1809
 indx_insert_entry+0xa3c/0xee0 fs/ntfs3/index.c:1986
 ntfs_create_inode+0x438d/0x4e40 fs/ntfs3/inode.c:1656
 ntfs_create+0x56/0x70 fs/ntfs3/namei.c:110
 lookup_open fs/namei.c:3651 [inline]
 open_last_lookups fs/namei.c:3750 [inline]
 path_openat+0x2ed8/0x6250 fs/namei.c:3986
 do_filp_open+0x268/0x600 fs/namei.c:4016
 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1427
 do_sys_open fs/open.c:1442 [inline]
 __do_sys_openat fs/open.c:1458 [inline]
 __se_sys_openat fs/open.c:1453 [inline]
 __x64_sys_openat+0x2a1/0x310 fs/open.c:1453
 x64_sys_call+0x36f5/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:258
 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+0xcef/0x2010 fs/ntfs3/index.c:1805
 indx_insert_entry+0xa3c/0xee0 fs/ntfs3/index.c:1986
 ntfs_create_inode+0x438d/0x4e40 fs/ntfs3/inode.c:1656
 ntfs_create+0x56/0x70 fs/ntfs3/namei.c:110
 lookup_open fs/namei.c:3651 [inline]
 open_last_lookups fs/namei.c:3750 [inline]
 path_openat+0x2ed8/0x6250 fs/namei.c:3986
 do_filp_open+0x268/0x600 fs/namei.c:4016
 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1427
 do_sys_open fs/open.c:1442 [inline]
 __do_sys_openat fs/open.c:1458 [inline]
 __se_sys_openat fs/open.c:1453 [inline]
 __x64_sys_openat+0x2a1/0x310 fs/open.c:1453
 x64_sys_call+0x36f5/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:258
 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:4121 [inline]
 slab_alloc_node mm/slub.c:4164 [inline]
 kmem_cache_alloc_noprof+0x915/0xe10 mm/slub.c:4171
 ntfs_create_inode+0x5f5/0x4e40 fs/ntfs3/inode.c:1293
 ntfs_create+0x56/0x70 fs/ntfs3/namei.c:110
 lookup_open fs/namei.c:3651 [inline]
 open_last_lookups fs/namei.c:3750 [inline]
 path_openat+0x2ed8/0x6250 fs/namei.c:3986
 do_filp_open+0x268/0x600 fs/namei.c:4016
 do_sys_openat2+0x1bf/0x2f0 fs/open.c:1427
 do_sys_open fs/open.c:1442 [inline]
 __do_sys_openat fs/open.c:1458 [inline]
 __se_sys_openat fs/open.c:1453 [inline]
 __x64_sys_openat+0x2a1/0x310 fs/open.c:1453
 x64_sys_call+0x36f5/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:258
 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: 6072 Comm: syz.0.37 Not tainted 6.14.0-rc1-syzkaller-00081-gbb066fe812d6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
=====================================================