================================================================== BUG: KCSAN: data-race in delete_from_page_cache_batch / folio_mapping write to 0xffffea000423ae58 of 8 bytes by task 20068 on cpu 0: page_cache_delete_batch mm/filemap.c:322 [inline] delete_from_page_cache_batch+0x35c/0x780 mm/filemap.c:353 truncate_inode_pages_range+0x1d5/0xa00 mm/truncate.c:336 truncate_inode_pages+0x20/0x30 mm/truncate.c:435 kill_bdev block/bdev.c:78 [inline] set_blocksize+0x24e/0x270 block/bdev.c:158 sb_set_blocksize block/bdev.c:167 [inline] sb_min_blocksize+0x92/0x110 block/bdev.c:183 ext4_fill_super+0x295/0x5870 fs/ext4/super.c:3930 mount_bdev+0x1e8/0x290 fs/super.c:1370 legacy_get_tree+0x70/0xc0 fs/fs_context.c:610 vfs_get_tree+0x4a/0x1a0 fs/super.c:1500 do_new_mount fs/namespace.c:2988 [inline] path_mount+0x11cf/0x1c40 fs/namespace.c:3318 do_mount fs/namespace.c:3331 [inline] __do_sys_mount fs/namespace.c:3539 [inline] __se_sys_mount+0x24b/0x2f0 fs/namespace.c:3516 __x64_sys_mount+0x63/0x70 fs/namespace.c:3516 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffffea000423ae58 of 8 bytes by task 19543 on cpu 1: folio_mapping+0x92/0x120 mm/util.c:722 folio_evictable mm/internal.h:112 [inline] __pagevec_lru_add_fn+0x81/0x380 mm/swap.c:1043 __pagevec_lru_add+0x1c3/0x270 mm/swap.c:1071 folio_add_lru+0x11a/0x160 mm/swap.c:469 lru_cache_add+0x37/0x50 mm/folio-compat.c:108 lru_cache_add_inactive_or_unevictable+0x46/0x140 mm/swap.c:500 do_anonymous_page+0x6fe/0x8d0 mm/memory.c:3800 handle_pte_fault mm/memory.c:4549 [inline] __handle_mm_fault mm/memory.c:4686 [inline] handle_mm_fault+0x814/0x1590 mm/memory.c:4784 do_user_addr_fault+0x609/0xbe0 arch/x86/mm/fault.c:1397 handle_page_fault arch/x86/mm/fault.c:1485 [inline] exc_page_fault+0x91/0x290 arch/x86/mm/fault.c:1541 asm_exc_page_fault+0x1e/0x30 value changed: 0xffff888101320580 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 19543 Comm: udevd Not tainted 5.16.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================