================================================================== BUG: KCSAN: data-race in __filemap_remove_folio / folio_mapping write to 0xffffea00050dd858 of 8 bytes by task 14483 on cpu 1: page_cache_delete mm/filemap.c:143 [inline] __filemap_remove_folio+0x1b8/0x2d0 mm/filemap.c:223 filemap_remove_folio+0x6c/0x1e0 mm/filemap.c:255 truncate_inode_folio+0x42/0x50 mm/truncate.c:195 shmem_undo_range+0x256/0xa40 mm/shmem.c:1001 shmem_truncate_range mm/shmem.c:1114 [inline] shmem_evict_inode+0x14d/0x530 mm/shmem.c:1242 evict+0x1aa/0x410 fs/inode.c:665 iput_final fs/inode.c:1739 [inline] iput+0x42c/0x5b0 fs/inode.c:1765 dentry_unlink_inode+0x22a/0x240 fs/dcache.c:400 __dentry_kill+0x182/0x4a0 fs/dcache.c:603 dput+0x54/0xc0 fs/dcache.c:845 __fput+0x41d/0x630 fs/file_table.c:384 __fput_sync+0x44/0x50 fs/file_table.c:461 __do_sys_close fs/open.c:1554 [inline] __se_sys_close+0xfa/0x1a0 fs/open.c:1539 __x64_sys_close+0x1f/0x30 fs/open.c:1539 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x59/0x120 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b read to 0xffffea00050dd858 of 8 bytes by task 14484 on cpu 0: folio_mapping+0x92/0x110 mm/util.c:782 folio_evictable mm/internal.h:162 [inline] lru_add_fn+0x8d/0x440 mm/swap.c:181 folio_batch_move_lru+0x21e/0x2f0 mm/swap.c:217 folio_batch_add_and_move mm/swap.c:234 [inline] folio_add_lru mm/swap.c:517 [inline] folio_add_lru_vma+0xf4/0x160 mm/swap.c:537 wp_page_copy mm/memory.c:3206 [inline] do_wp_page+0x1556/0x1f20 mm/memory.c:3525 handle_pte_fault mm/memory.c:5160 [inline] __handle_mm_fault mm/memory.c:5285 [inline] handle_mm_fault+0xb80/0x27b0 mm/memory.c:5450 do_user_addr_fault arch/x86/mm/fault.c:1364 [inline] handle_page_fault arch/x86/mm/fault.c:1507 [inline] exc_page_fault+0x3ff/0x6d0 arch/x86/mm/fault.c:1563 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 value changed: 0xffff888137d31f58 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 14484 Comm: syz-executor.1 Not tainted 6.8.0-rc1-syzkaller-00169-gecb1b8288dc7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 ==================================================================