=====================================================
BUG: KMSAN: uninit-value in crc32_be_base lib/crc/crc32-main.c:46 [inline]
BUG: KMSAN: uninit-value in crc32_be+0x228/0x270 lib/crc/crc32-main.c:80
 crc32_be_base lib/crc/crc32-main.c:46 [inline]
 crc32_be+0x228/0x270 lib/crc/crc32-main.c:80
 sw842_compress+0x45db/0x4fa0 lib/842/842_compress.c:584
 crypto842_scompress+0x4e/0x70 crypto/842.c:46
 scomp_acomp_comp_decomp+0xa49/0x1120 include/crypto/internal/scompress.h:-1
 scomp_acomp_compress+0x33/0x40 crypto/scompress.c:282
 crypto_acomp_compress+0x5b4/0xe80 crypto/acompress.c:291
 zswap_compress mm/zswap.c:886 [inline]
 zswap_store_page mm/zswap.c:1428 [inline]
 zswap_store+0x1e0b/0x4a90 mm/zswap.c:1539
 swap_writeout+0x8c1/0x1390 mm/page_io.c:275
 shmem_writeout+0x1abb/0x1f60 mm/shmem.c:1662
 writeout mm/vmscan.c:649 [inline]
 pageout mm/vmscan.c:698 [inline]
 shrink_folio_list+0x5479/0x7b00 mm/vmscan.c:1417
 evict_folios+0x9a43/0xc010 mm/vmscan.c:4709
 try_to_shrink_lruvec+0x12b6/0x17e0 mm/vmscan.c:4872
 lru_gen_shrink_lruvec mm/vmscan.c:5021 [inline]
 shrink_lruvec+0x46f/0x4f10 mm/vmscan.c:5782
 shrink_node_memcgs mm/vmscan.c:6018 [inline]
 shrink_node+0xf1e/0x51e0 mm/vmscan.c:6059
 shrink_zones mm/vmscan.c:6298 [inline]
 do_try_to_free_pages+0x849/0x26b0 mm/vmscan.c:6360
 try_to_free_mem_cgroup_pages+0x3ae/0x950 mm/vmscan.c:6688
 try_charge_memcg+0x80f/0x1c50 mm/memcontrol.c:2388
 obj_cgroup_charge_pages+0x2ed/0x600 mm/memcontrol.c:2823
 __memcg_kmem_charge_page+0x14a/0x4c0 mm/memcontrol.c:2867
 __alloc_frozen_pages_noprof+0x3ba/0xab0 mm/page_alloc.c:5227
 alloc_pages_mpol+0x328/0x860 mm/mempolicy.c:2486
 alloc_frozen_pages_noprof mm/mempolicy.c:2557 [inline]
 alloc_pages_noprof+0x102/0x280 mm/mempolicy.c:2577
 vm_area_alloc_pages mm/vmalloc.c:3718 [inline]
 __vmalloc_area_node mm/vmalloc.c:3863 [inline]
 __vmalloc_node_range_noprof+0x1577/0x2d90 mm/vmalloc.c:4051
 __vmalloc_node_noprof mm/vmalloc.c:4111 [inline]
 __vmalloc_noprof+0x128/0x1f0 mm/vmalloc.c:4127
 do_replace+0x467/0x8c0 net/bridge/netfilter/ebtables.c:1135
 do_ebt_set_ctl+0x24f/0x2230 net/bridge/netfilter/ebtables.c:2527
 nf_setsockopt+0x4fb/0x550 net/netfilter/nf_sockopt.c:101
 ip_setsockopt+0x1f2/0x210 net/ipv4/ip_sockglue.c:1424
 sock_common_setsockopt+0xf5/0x140 net/core/sock.c:3972
 do_sock_setsockopt net/socket.c:2322 [inline]
 __sys_setsockopt+0x43e/0x580 net/socket.c:2347
 __do_sys_setsockopt net/socket.c:2353 [inline]
 __se_sys_setsockopt net/socket.c:2350 [inline]
 __x64_sys_setsockopt+0xf4/0x1a0 net/socket.c:2350
 x64_sys_call+0x28e3/0x3e70 arch/x86/include/generated/asm/syscalls_64.h:55
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd9/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 __alloc_frozen_pages_noprof+0x421/0xab0 mm/page_alloc.c:5233
 alloc_pages_mpol+0x328/0x860 mm/mempolicy.c:2486
 folio_alloc_mpol_noprof+0x56/0x1d0 mm/mempolicy.c:2505
 shmem_alloc_folio mm/shmem.c:1890 [inline]
 shmem_alloc_and_add_folio+0xc56/0x1bd0 mm/shmem.c:1932
 shmem_get_folio_gfp+0xad3/0x1fc0 mm/shmem.c:2556
 shmem_get_folio mm/shmem.c:2662 [inline]
 shmem_symlink+0x562/0xad0 mm/shmem.c:4133
 vfs_symlink+0x42f/0x4c0 fs/namei.c:5514
 do_symlinkat+0x2ae/0xbb0 fs/namei.c:5541
 __do_sys_symlink fs/namei.c:5567 [inline]
 __se_sys_symlink fs/namei.c:5565 [inline]
 __x64_sys_symlink+0xcf/0x140 fs/namei.c:5565
 x64_sys_call+0x2c72/0x3e70 arch/x86/include/generated/asm/syscalls_64.h:89
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd9/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 1 UID: 0 PID: 10933 Comm: syz.7.1319 Tainted: G             L      syzkaller #0 PREEMPT(none) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
=====================================================