=====================================================
BUG: KMSAN: uninit-value in crc32_body lib/crc32.c:112 [inline]
BUG: KMSAN: uninit-value in crc32_be_generic lib/crc32.c:331 [inline]
BUG: KMSAN: uninit-value in crc32_be_base+0x47f/0xd60 lib/crc32.c:345
 crc32_body lib/crc32.c:112 [inline]
 crc32_be_generic lib/crc32.c:331 [inline]
 crc32_be_base+0x47f/0xd60 lib/crc32.c:345
 sw842_compress+0x503d/0x5990 lib/842/842_compress.c:582
 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
 lru_gen_shrink_lruvec mm/vmscan.c:4938 [inline]
 shrink_lruvec+0x49a/0x47c0 mm/vmscan.c:5693
 shrink_node_memcgs mm/vmscan.c:5929 [inline]
 shrink_node+0x105e/0x51c0 mm/vmscan.c:5970
 shrink_zones mm/vmscan.c:6215 [inline]
 do_try_to_free_pages+0x820/0x2550 mm/vmscan.c:6277
 try_to_free_mem_cgroup_pages+0x3fa/0xa60 mm/vmscan.c:6609
 try_charge_memcg+0x71a/0x1780 mm/memcontrol.c:2238
 obj_cgroup_charge_pages+0x2cb/0x640 mm/memcontrol.c:2646
 __memcg_kmem_charge_page+0x151/0x520 mm/memcontrol.c:2673
 __alloc_pages_noprof+0x93d/0xe00 mm/page_alloc.c:4768
 alloc_pages_mpol_noprof+0x299/0x990 mm/mempolicy.c:2265
 alloc_pages_noprof+0x1bf/0x1e0 mm/mempolicy.c:2344
 vm_area_alloc_pages mm/vmalloc.c:3589 [inline]
 __vmalloc_area_node mm/vmalloc.c:3667 [inline]
 __vmalloc_node_range_noprof+0xf1b/0x26b0 mm/vmalloc.c:3844
 __kvmalloc_node_noprof+0x247/0x2d0 mm/util.c:672
 ip_set_alloc+0x38/0x50 net/netfilter/ipset/ip_set_core.c:256
 hash_netiface_create+0x5c5/0x16b0 net/netfilter/ipset/ip_set_hash_gen.h:1568
 ip_set_create+0xa66/0x1b80 net/netfilter/ipset/ip_set_core.c:1104
 nfnetlink_rcv_msg+0xc91/0xdf0 net/netfilter/nfnetlink.c:302
 netlink_rcv_skb+0x375/0x650 net/netlink/af_netlink.c:2542
 nfnetlink_rcv+0x381/0x5100 net/netfilter/nfnetlink.c:667
 netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline]
 netlink_unicast+0xf52/0x1260 net/netlink/af_netlink.c:1347
 netlink_sendmsg+0x10da/0x11e0 net/netlink/af_netlink.c:1891
 sock_sendmsg_nosec net/socket.c:711 [inline]
 __sock_sendmsg+0x30f/0x380 net/socket.c:726
 ____sys_sendmsg+0x877/0xb60 net/socket.c:2583
 ___sys_sendmsg+0x28d/0x3c0 net/socket.c:2637
 __sys_sendmsg net/socket.c:2669 [inline]
 __do_sys_sendmsg net/socket.c:2674 [inline]
 __se_sys_sendmsg net/socket.c:2672 [inline]
 __x64_sys_sendmsg+0x212/0x3c0 net/socket.c:2672
 x64_sys_call+0x2ed6/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:47
 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:
 __alloc_pages_noprof+0x9a7/0xe00 mm/page_alloc.c:4774
 alloc_pages_mpol_noprof+0x299/0x990 mm/mempolicy.c:2265
 folio_alloc_mpol_noprof+0x55/0x180 mm/mempolicy.c:2283
 shmem_alloc_folio mm/shmem.c:1794 [inline]
 shmem_alloc_and_add_folio+0xc33/0x1c30 mm/shmem.c:1833
 shmem_get_folio_gfp+0xacd/0x1f30 mm/shmem.c:2355
 shmem_get_folio mm/shmem.c:2461 [inline]
 shmem_symlink+0x521/0xaa0 mm/shmem.c:3947
 vfs_symlink+0x1ed/0x460 fs/namei.c:4669
 do_symlinkat+0x253/0x8b0 fs/namei.c:4695
 __do_sys_symlinkat fs/namei.c:4711 [inline]
 __se_sys_symlinkat fs/namei.c:4708 [inline]
 __x64_sys_symlinkat+0xef/0x160 fs/namei.c:4708
 x64_sys_call+0x2db0/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:267
 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: 6574 Comm: syz.4.244 Tainted: G        W          6.12.0-syzkaller-12113-gbcc8eda6d349 #0
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
=====================================================