===================================================== BUG: KMSAN: uninit-value in zswap_rb_search mm/zswap.c:324 [inline] BUG: KMSAN: uninit-value in zswap_store+0x3d8/0x32b0 mm/zswap.c:1232 zswap_rb_search mm/zswap.c:324 [inline] zswap_store+0x3d8/0x32b0 mm/zswap.c:1232 swap_writepage+0x122/0x340 mm/page_io.c:198 pageout mm/vmscan.c:654 [inline] shrink_folio_list+0x508f/0x7760 mm/vmscan.c:1315 evict_folios+0x9bb1/0xbaa0 mm/vmscan.c:4504 try_to_shrink_lruvec+0x15ac/0x1b20 mm/vmscan.c:4709 shrink_one+0x66e/0xd70 mm/vmscan.c:4748 shrink_many mm/vmscan.c:4813 [inline] lru_gen_shrink_node mm/vmscan.c:4928 [inline] shrink_node+0x4bed/0x5890 mm/vmscan.c:5868 shrink_zones mm/vmscan.c:6121 [inline] do_try_to_free_pages+0x8fe/0x2530 mm/vmscan.c:6183 try_to_free_pages+0xbdc/0x17a0 mm/vmscan.c:6418 __perform_reclaim mm/page_alloc.c:3769 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:3791 [inline] __alloc_pages_slowpath+0x1027/0x30c0 mm/page_alloc.c:4196 __alloc_pages+0xa45/0xe00 mm/page_alloc.c:4581 alloc_pages_mpol+0x62b/0x9d0 mm/mempolicy.c:2133 alloc_pages+0x1be/0x1e0 mm/mempolicy.c:2204 pagetable_alloc include/linux/mm.h:2830 [inline] __pte_alloc_one include/asm-generic/pgalloc.h:68 [inline] pte_alloc_one+0x5c/0x350 arch/x86/mm/pgtable.c:33 __pte_alloc+0x3d/0x670 mm/memory.c:438 copy_pte_range mm/memory.c:1037 [inline] copy_pmd_range mm/memory.c:1176 [inline] copy_pud_range mm/memory.c:1213 [inline] copy_p4d_range mm/memory.c:1237 [inline] copy_page_range+0x7e9d/0x8eb0 mm/memory.c:1335 dup_mmap kernel/fork.c:758 [inline] dup_mm kernel/fork.c:1691 [inline] copy_mm+0x20f1/0x34f0 kernel/fork.c:1740 copy_process+0x2b08/0x6540 kernel/fork.c:2502 kernel_clone+0x400/0x1040 kernel/fork.c:2907 __do_sys_clone kernel/fork.c:3050 [inline] __se_sys_clone kernel/fork.c:3034 [inline] __x64_sys_clone+0x25c/0x360 kernel/fork.c:3034 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x6d/0x140 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Uninit was created at: __alloc_pages+0x9a4/0xe00 mm/page_alloc.c:4591 alloc_pages_mpol+0x62b/0x9d0 mm/mempolicy.c:2133 alloc_pages+0x1be/0x1e0 mm/mempolicy.c:2204 alloc_slab_page mm/slub.c:1870 [inline] allocate_slab mm/slub.c:2017 [inline] new_slab+0x421/0x1570 mm/slub.c:2070 ___slab_alloc+0x13db/0x33d0 mm/slub.c:3223 __slab_alloc mm/slub.c:3322 [inline] __slab_alloc_node mm/slub.c:3375 [inline] slab_alloc_node mm/slub.c:3468 [inline] slab_alloc mm/slub.c:3486 [inline] __kmem_cache_alloc_lru mm/slub.c:3493 [inline] kmem_cache_alloc+0x6e1/0xa90 mm/slub.c:3502 zswap_entry_cache_alloc mm/zswap.c:302 [inline] zswap_store+0xee9/0x32b0 mm/zswap.c:1263 swap_writepage+0x122/0x340 mm/page_io.c:198 pageout mm/vmscan.c:654 [inline] shrink_folio_list+0x508f/0x7760 mm/vmscan.c:1315 evict_folios+0x9bb1/0xbaa0 mm/vmscan.c:4504 try_to_shrink_lruvec+0x15ac/0x1b20 mm/vmscan.c:4709 shrink_one+0x66e/0xd70 mm/vmscan.c:4748 shrink_many mm/vmscan.c:4813 [inline] lru_gen_shrink_node mm/vmscan.c:4928 [inline] shrink_node+0x4bed/0x5890 mm/vmscan.c:5868 shrink_zones mm/vmscan.c:6121 [inline] do_try_to_free_pages+0x8fe/0x2530 mm/vmscan.c:6183 try_to_free_pages+0xbdc/0x17a0 mm/vmscan.c:6418 __perform_reclaim mm/page_alloc.c:3769 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:3791 [inline] __alloc_pages_slowpath+0x1027/0x30c0 mm/page_alloc.c:4196 __alloc_pages+0xa45/0xe00 mm/page_alloc.c:4581 alloc_pages_mpol+0x62b/0x9d0 mm/mempolicy.c:2133 __read_swap_cache_async+0x33c/0xff0 mm/swap_state.c:457 swap_cluster_readahead+0xe34/0xf90 mm/swap_state.c:674 swapin_readahead+0x1f6/0x19c0 mm/swap_state.c:878 do_swap_page+0x123e/0x5040 mm/memory.c:3884 handle_pte_fault mm/memory.c:5042 [inline] __handle_mm_fault mm/memory.c:5180 [inline] handle_mm_fault+0x4596/0xc790 mm/memory.c:5345 do_user_addr_fault arch/x86/mm/fault.c:1364 [inline] handle_page_fault arch/x86/mm/fault.c:1507 [inline] exc_page_fault+0x412/0x6f0 arch/x86/mm/fault.c:1563 asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:570 CPU: 0 PID: 4450 Comm: udevd Not tainted 6.7.0-syzkaller-00562-g9f8413c4a66f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 =====================================================