=====================================================
BUG: KMSAN: uninit-value in crc32_be_base lib/crc/crc32-main.c:46 [inline]
BUG: KMSAN: uninit-value in crc32_be+0x215/0x270 lib/crc/crc32-main.c:80
 crc32_be_base lib/crc/crc32-main.c:46 [inline]
 crc32_be+0x215/0x270 lib/crc/crc32-main.c:80
 sw842_decompress+0x15c6/0x1780 lib/842/842_decompress.c:385
 crypto842_sdecompress+0x46/0x60 crypto/842.c:53
 scomp_acomp_comp_decomp+0xa49/0x1120 include/crypto/internal/scompress.h:-1
 scomp_acomp_decompress+0x30/0x40 crypto/scompress.c:287
 crypto_acomp_decompress+0x5b4/0xe80 crypto/acompress.c:303
 zswap_decompress+0x729/0x1000 mm/zswap.c:968
 zswap_load+0x262/0x570 mm/zswap.c:1628
 swap_read_folio+0x662/0x3050 mm/page_io.c:637
 swap_cluster_readahead+0xa8c/0xb20 mm/swap_state.c:672
 swapin_readahead+0x1d9/0x15b0 mm/swap_state.c:813
 do_swap_page+0xce9/0x9c40 mm/memory.c:4713
 handle_pte_fault mm/memory.c:6180 [inline]
 __handle_mm_fault mm/memory.c:6318 [inline]
 handle_mm_fault+0x4100/0xded0 mm/memory.c:6487
 faultin_page mm/gup.c:1126 [inline]
 __get_user_pages+0x2dd8/0x5e00 mm/gup.c:1428
 __get_user_pages_locked mm/gup.c:1692 [inline]
 get_dump_page+0x143/0x590 mm/gup.c:2192
 dump_user_range+0x25d/0x14c0 fs/coredump.c:1366
 elf_core_dump+0x6a13/0x6cb0 fs/binfmt_elf.c:2111
 coredump_write+0x20e3/0x2d50 fs/coredump.c:1049
 vfs_coredump+0x437b/0x6030 fs/coredump.c:1170
 get_signal+0x20a9/0x2a20 kernel/signal.c:3019
 arch_do_signal_or_restart+0x53/0xb90 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:40 [inline]
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 irqentry_exit_to_user_mode+0x5f/0xa0 kernel/entry/common.c:73
 irqentry_exit+0x16/0x60 kernel/entry/common.c:191
 exc_page_fault+0x82/0xc0 arch/x86/mm/fault.c:1535
 asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:618

Uninit was created at:
 __alloc_frozen_pages_noprof+0x689/0xf00 mm/page_alloc.c:5206
 alloc_pages_mpol+0x328/0x860 mm/mempolicy.c:2416
 folio_alloc_mpol_noprof+0x56/0x1d0 mm/mempolicy.c:2435
 __read_swap_cache_async+0x1f9/0x770 mm/swap_state.c:440
 swap_cluster_readahead+0xa0d/0xb20 mm/swap_state.c:669
 swapin_readahead+0x1d9/0x15b0 mm/swap_state.c:813
 do_swap_page+0xce9/0x9c40 mm/memory.c:4713
 handle_pte_fault mm/memory.c:6180 [inline]
 __handle_mm_fault mm/memory.c:6318 [inline]
 handle_mm_fault+0x4100/0xded0 mm/memory.c:6487
 faultin_page mm/gup.c:1126 [inline]
 __get_user_pages+0x2dd8/0x5e00 mm/gup.c:1428
 __get_user_pages_locked mm/gup.c:1692 [inline]
 get_dump_page+0x143/0x590 mm/gup.c:2192
 dump_user_range+0x25d/0x14c0 fs/coredump.c:1366
 elf_core_dump+0x6a13/0x6cb0 fs/binfmt_elf.c:2111
 coredump_write+0x20e3/0x2d50 fs/coredump.c:1049
 vfs_coredump+0x437b/0x6030 fs/coredump.c:1170
 get_signal+0x20a9/0x2a20 kernel/signal.c:3019
 arch_do_signal_or_restart+0x53/0xb90 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:40 [inline]
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 irqentry_exit_to_user_mode+0x5f/0xa0 kernel/entry/common.c:73
 irqentry_exit+0x16/0x60 kernel/entry/common.c:191
 exc_page_fault+0x82/0xc0 arch/x86/mm/fault.c:1535
 asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:618

CPU: 0 UID: 0 PID: 16770 Comm: syz.5.3874 Tainted: G        W           syzkaller #0 PREEMPT(none) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
=====================================================