===================================================== BUG: KMSAN: uninit-value in hlist_add_head include/linux/list.h:1023 [inline] BUG: KMSAN: uninit-value in update_hashtables lib/842/842_compress.c:432 [inline] BUG: KMSAN: uninit-value in sw842_compress+0x349a/0x5990 lib/842/842_compress.c:550 hlist_add_head include/linux/list.h:1023 [inline] update_hashtables lib/842/842_compress.c:432 [inline] sw842_compress+0x349a/0x5990 lib/842/842_compress.c:550 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:924 [inline] zswap_store_page mm/zswap.c:1426 [inline] zswap_store+0x1c0f/0x47d0 mm/zswap.c:1533 swap_writepage+0xa67/0x1950 mm/page_io.c:279 shmem_writepage+0x2117/0x2450 mm/shmem.c:1575 pageout mm/vmscan.c:689 [inline] shrink_folio_list+0x5e7f/0x7dd0 mm/vmscan.c:1367 evict_folios+0x9e08/0xbeb0 mm/vmscan.c:4593 try_to_shrink_lruvec+0x1342/0x1810 mm/vmscan.c:4789 shrink_one+0x646/0xd20 mm/vmscan.c:4834 shrink_many mm/vmscan.c:4897 [inline] lru_gen_shrink_node mm/vmscan.c:4975 [inline] shrink_node+0x4578/0x51c0 mm/vmscan.c:5956 kswapd_shrink_node mm/vmscan.c:6785 [inline] balance_pgdat mm/vmscan.c:6977 [inline] kswapd+0x25e8/0x42f0 mm/vmscan.c:7246 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:924 [inline] zswap_store_page mm/zswap.c:1426 [inline] zswap_store+0x1c0f/0x47d0 mm/zswap.c:1533 swap_writepage+0xa67/0x1950 mm/page_io.c:279 shmem_writepage+0x2117/0x2450 mm/shmem.c:1575 pageout mm/vmscan.c:689 [inline] shrink_folio_list+0x5e7f/0x7dd0 mm/vmscan.c:1367 evict_folios+0x9e08/0xbeb0 mm/vmscan.c:4593 try_to_shrink_lruvec+0x1342/0x1810 mm/vmscan.c:4789 shrink_one+0x646/0xd20 mm/vmscan.c:4834 shrink_many mm/vmscan.c:4897 [inline] lru_gen_shrink_node mm/vmscan.c:4975 [inline] shrink_node+0x4578/0x51c0 mm/vmscan.c:5956 kswapd_shrink_node mm/vmscan.c:6785 [inline] balance_pgdat mm/vmscan.c:6977 [inline] kswapd+0x25e8/0x42f0 mm/vmscan.c:7246 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:4067 shmem_file_write_iter+0x2ba/0x2f0 mm/shmem.c:3293 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_rootcg_workfn+0x2b/0x40 drivers/block/loop.c:1975 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:397 ni_write_inode+0xd8d/0x1df0 fs/ntfs3/frecord.c:3363 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_sb_inodes+0xa34/0x1c20 fs/fs-writeback.c:1976 __writeback_inodes_wb+0x14c/0x440 fs/fs-writeback.c:2047 wb_writeback+0x50b/0xcb0 fs/fs-writeback.c:2158 wb_check_background_flush fs/fs-writeback.c:2228 [inline] wb_do_writeback fs/fs-writeback.c:2316 [inline] wb_workfn+0x122c/0x1940 fs/fs-writeback.c:2343 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: 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 ni_add_name+0xe5d/0x10d0 fs/ntfs3/frecord.c:3046 ni_rename+0x9b/0x240 fs/ntfs3/frecord.c:3078 ntfs_rename+0xdb5/0x1300 fs/ntfs3/namei.c:317 vfs_rename+0x1d9d/0x2280 fs/namei.c:5067 do_renameat2+0x18d0/0x1d50 fs/namei.c:5224 __do_sys_rename fs/namei.c:5271 [inline] __se_sys_rename fs/namei.c:5269 [inline] __ia32_sys_rename+0xd8/0x130 fs/namei.c:5269 ia32_sys_call+0x3a1f/0x4180 arch/x86/include/generated/asm/syscalls_32.h:39 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:4125 [inline] slab_alloc_node mm/slub.c:4168 [inline] kmem_cache_alloc_noprof+0x915/0xe10 mm/slub.c:4175 ntfs_rename+0x847/0x1300 fs/ntfs3/namei.c:291 vfs_rename+0x1d9d/0x2280 fs/namei.c:5067 do_renameat2+0x18d0/0x1d50 fs/namei.c:5224 __do_sys_rename fs/namei.c:5271 [inline] __se_sys_rename fs/namei.c:5269 [inline] __ia32_sys_rename+0xd8/0x130 fs/namei.c:5269 ia32_sys_call+0x3a1f/0x4180 arch/x86/include/generated/asm/syscalls_32.h:39 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 Not tainted 6.13.0-rc2-syzkaller-00292-ga446e965a188 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 =====================================================