================================================================== BUG: KCSAN: data-race in __delete_from_page_cache / page_mapping write to 0xffffea00041e7898 of 8 bytes by task 6533 on cpu 0: page_cache_delete mm/filemap.c:145 [inline] __delete_from_page_cache+0x1b4/0x280 mm/filemap.c:232 delete_from_page_cache+0x82/0x160 mm/filemap.c:266 truncate_inode_page mm/truncate.c:219 [inline] truncate_inode_pages_range+0x9a3/0xad0 mm/truncate.c:397 truncate_inode_pages+0x20/0x30 mm/truncate.c:425 kill_bdev block/bdev.c:77 [inline] set_blocksize+0x24e/0x270 block/bdev.c:157 sb_set_blocksize block/bdev.c:166 [inline] sb_min_blocksize+0x9d/0x120 block/bdev.c:182 ext4_fill_super+0x3a5/0x7830 fs/ext4/super.c:3924 mount_bdev+0x1e8/0x290 fs/super.c:1368 ext4_mount+0x2d/0x40 fs/ext4/super.c:6515 legacy_get_tree+0x70/0xc0 fs/fs_context.c:610 vfs_get_tree+0x4a/0x1a0 fs/super.c:1498 do_new_mount fs/namespace.c:2988 [inline] path_mount+0x11ec/0x1d20 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+0x44/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffffea00041e7898 of 8 bytes by task 6464 on cpu 1: page_mapping+0x111/0x1c0 mm/util.c:725 page_evictable mm/internal.h:83 [inline] __pagevec_lru_add_fn+0x82/0x490 mm/swap.c:1024 __pagevec_lru_add+0x189/0x240 mm/swap.c:1052 lru_cache_add mm/swap.c:453 [inline] lru_cache_add_inactive_or_unevictable+0x156/0x270 mm/swap.c:484 do_anonymous_page+0x716/0x8b0 mm/memory.c:3808 handle_pte_fault mm/memory.c:4557 [inline] __handle_mm_fault mm/memory.c:4694 [inline] handle_mm_fault+0x7f5/0x1580 mm/memory.c:4792 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+0x91/0x220 arch/x86/mm/fault.c:1541 asm_exc_page_fault+0x1e/0x30 copy_user_enhanced_fast_string+0xe/0x40 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline] raw_copy_to_user arch/x86/include/asm/uaccess_64.h:58 [inline] copyout lib/iov_iter.c:157 [inline] copy_page_to_iter_iovec lib/iov_iter.c:228 [inline] __copy_page_to_iter lib/iov_iter.c:805 [inline] copy_page_to_iter+0x2d9/0x950 lib/iov_iter.c:833 filemap_read+0xee6/0x1220 mm/filemap.c:2683 generic_file_read_iter+0x75/0x2c0 mm/filemap.c:2779 blkdev_read_iter+0xb9/0xf0 block/fops.c:545 call_read_iter include/linux/fs.h:2157 [inline] new_sync_read fs/read_write.c:404 [inline] vfs_read+0x66c/0x750 fs/read_write.c:485 ksys_read+0xd9/0x190 fs/read_write.c:623 __do_sys_read fs/read_write.c:633 [inline] __se_sys_read fs/read_write.c:631 [inline] __x64_sys_read+0x3e/0x50 fs/read_write.c:631 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0xffff88810109ebe8 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 6464 Comm: systemd-udevd Not tainted 5.15.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================