================================================================== BUG: KCSAN: data-race in folio_mapping / page_cache_delete write to 0xffffea00041a1258 of 8 bytes by task 1919 on cpu 1: page_cache_delete+0x30d/0x360 mm/filemap.c:143 __filemap_remove_folio+0x3b/0xf0 mm/filemap.c:223 filemap_remove_folio+0x69/0x120 mm/filemap.c:255 truncate_inode_folio+0x204/0x210 mm/truncate.c:196 shmem_undo_range+0x3d2/0x1160 mm/shmem.c:952 shmem_truncate_range mm/shmem.c:1044 [inline] shmem_evict_inode+0x141/0x570 mm/shmem.c:1133 evict+0x1aa/0x410 fs/inode.c:664 iput_final fs/inode.c:1744 [inline] iput+0x3f9/0x580 fs/inode.c:1770 dentry_unlink_inode+0x22a/0x240 fs/dcache.c:401 __dentry_kill+0x28b/0x450 fs/dcache.c:607 dentry_kill+0x8d/0x1e0 dput+0x11e/0x1f0 fs/dcache.c:913 do_renameat2+0x6f2/0x9f0 fs/namei.c:4828 __do_sys_rename fs/namei.c:4872 [inline] __se_sys_rename fs/namei.c:4870 [inline] __x64_sys_rename+0x58/0x60 fs/namei.c:4870 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffffea00041a1258 of 8 bytes by task 2247 on cpu 0: folio_mapping+0x92/0x120 mm/util.c:773 folio_evictable mm/internal.h:121 [inline] __pagevec_lru_add_fn+0x134/0x520 mm/swap.c:1024 __pagevec_lru_add+0x1c6/0x320 mm/swap.c:1060 folio_add_lru+0x112/0x160 mm/swap.c:467 lru_cache_add+0x3b/0xe0 mm/folio-compat.c:109 lru_cache_add_inactive_or_unevictable+0x44/0x60 mm/swap.c:488 wp_page_copy+0x795/0x12a0 mm/memory.c:3076 do_wp_page+0x641/0xd00 handle_pte_fault mm/memory.c:4645 [inline] __handle_mm_fault mm/memory.c:4763 [inline] handle_mm_fault+0x897/0xa40 mm/memory.c:4861 do_user_addr_fault+0x4cd/0x940 arch/x86/mm/fault.c:1397 handle_page_fault arch/x86/mm/fault.c:1484 [inline] exc_page_fault+0x60/0x160 arch/x86/mm/fault.c:1540 asm_exc_page_fault+0x1e/0x30 value changed: 0xffff888104ba1300 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 2247 Comm: syz-executor.1 Not tainted 5.18.0-rc4-syzkaller-00036-gcf424ef014ac-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================