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BUG: KMSAN: uninit-value in is_folio_zero_filled mm/page_io.c:188 [inline]
BUG: KMSAN: uninit-value in swap_writepage+0x547/0x1950 mm/page_io.c:266
 is_folio_zero_filled mm/page_io.c:188 [inline]
 swap_writepage+0x547/0x1950 mm/page_io.c:266
 shmem_writepage+0x2360/0x25a0 mm/shmem.c:1647
 pageout mm/vmscan.c:696 [inline]
 shrink_folio_list+0x5dd2/0x8220 mm/vmscan.c:1402
 evict_folios+0x94ed/0xb9c0 mm/vmscan.c:4660
 try_to_shrink_lruvec+0xc58/0x1080 mm/vmscan.c:4821
 lru_gen_shrink_lruvec mm/vmscan.c:4970 [inline]
 shrink_lruvec+0x49a/0x47c0 mm/vmscan.c:5715
 shrink_node_memcgs mm/vmscan.c:5951 [inline]
 shrink_node+0x105e/0x51c0 mm/vmscan.c:5992
 shrink_zones mm/vmscan.c:6237 [inline]
 do_try_to_free_pages+0x820/0x2550 mm/vmscan.c:6299
 try_to_free_mem_cgroup_pages+0x3fa/0xa60 mm/vmscan.c:6631
 try_charge_memcg+0x71a/0x1780 mm/memcontrol.c:2255
 obj_cgroup_charge_pages+0x2cb/0x640 mm/memcontrol.c:2636
 __memcg_kmem_charge_page+0x151/0x520 mm/memcontrol.c:2663
 __alloc_frozen_pages_noprof+0x93d/0xe00 mm/page_alloc.c:4756
 alloc_pages_mpol+0x4cd/0x890 mm/mempolicy.c:2270
 alloc_frozen_pages_noprof mm/mempolicy.c:2341 [inline]
 alloc_pages_noprof+0x1b5/0x250 mm/mempolicy.c:2361
 io_mem_alloc_compound io_uring/memmap.c:29 [inline]
 io_region_allocate_pages+0x168/0x8b0 io_uring/memmap.c:167
 io_create_region+0x6eb/0x810 io_uring/memmap.c:223
 io_allocate_scq_urings+0x774/0xa50 io_uring/io_uring.c:3506
 io_uring_create+0xabc/0x1440 io_uring/io_uring.c:3701
 io_uring_setup io_uring/io_uring.c:3791 [inline]
 __do_sys_io_uring_setup io_uring/io_uring.c:3818 [inline]
 __se_sys_io_uring_setup+0x476/0x4d0 io_uring/io_uring.c:3812
 __x64_sys_io_uring_setup+0x6c/0xa0 io_uring/io_uring.c:3812
 x64_sys_call+0x2e82/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:426
 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_frozen_pages_noprof+0x9a7/0xe00 mm/page_alloc.c:4762
 alloc_pages_mpol+0x4cd/0x890 mm/mempolicy.c:2270
 folio_alloc_mpol_noprof+0x57/0x1c0 mm/mempolicy.c:2289
 shmem_alloc_folio mm/shmem.c:1863 [inline]
 shmem_alloc_and_add_folio+0xbdf/0x1b80 mm/shmem.c:1902
 shmem_get_folio_gfp+0xacd/0x1f30 mm/shmem.c:2522
 shmem_get_folio mm/shmem.c:2628 [inline]
 shmem_symlink+0x5d5/0xd90 mm/shmem.c:4110
 vfs_symlink+0x1ed/0x460 fs/namei.c:4671
 do_symlinkat+0x253/0x8b0 fs/namei.c:4697
 __do_sys_symlink fs/namei.c:4718 [inline]
 __se_sys_symlink fs/namei.c:4716 [inline]
 __x64_sys_symlink+0xe0/0x140 fs/namei.c:4716
 x64_sys_call+0x31ca/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:89
 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: 0 UID: 0 PID: 11069 Comm: syz.4.1052 Not tainted 6.14.0-rc2-syzkaller-00041-g4dc1d1bec898 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
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