loop1: detected capacity change from 0 to 128 ================================================================== BUG: KCSAN: data-race in __filemap_add_folio / filemap_write_and_wait_range read-write to 0xffff888100630bb0 of 8 bytes by task 3428 on cpu 1: __filemap_add_folio+0x439/0x710 mm/filemap.c:918 filemap_add_folio+0x9c/0x1b0 mm/filemap.c:970 page_cache_ra_unbounded+0x148/0x2e0 mm/readahead.c:252 do_page_cache_ra mm/readahead.c:303 [inline] force_page_cache_ra mm/readahead.c:332 [inline] page_cache_sync_ra+0x252/0x670 mm/readahead.c:530 page_cache_sync_readahead include/linux/pagemap.h:1296 [inline] filemap_get_pages+0x252/0xfb0 mm/filemap.c:2529 filemap_read+0x21c/0x690 mm/filemap.c:2625 blkdev_read_iter+0x217/0x2c0 block/fops.c:764 new_sync_read fs/read_write.c:395 [inline] vfs_read+0x5e9/0x6e0 fs/read_write.c:476 ksys_read+0xeb/0x1b0 fs/read_write.c:619 __do_sys_read fs/read_write.c:629 [inline] __se_sys_read fs/read_write.c:627 [inline] __x64_sys_read+0x42/0x50 fs/read_write.c:627 x64_sys_call+0x27d3/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:1 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffff888100630bb0 of 8 bytes by task 7830 on cpu 0: mapping_needs_writeback mm/filemap.c:635 [inline] filemap_write_and_wait_range+0x58/0x1f0 mm/filemap.c:684 filemap_write_and_wait include/linux/pagemap.h:66 [inline] sync_blockdev block/bdev.c:218 [inline] set_blocksize+0x1df/0x280 block/bdev.c:170 sb_set_blocksize block/bdev.c:181 [inline] sb_min_blocksize+0x63/0xe0 block/bdev.c:197 ext4_load_super fs/ext4/super.c:4991 [inline] __ext4_fill_super fs/ext4/super.c:5188 [inline] ext4_fill_super+0x38b/0x39e0 fs/ext4/super.c:5664 get_tree_bdev+0x256/0x2e0 fs/super.c:1635 ext4_get_tree+0x1c/0x30 fs/ext4/super.c:5696 vfs_get_tree+0x56/0x1e0 fs/super.c:1800 do_new_mount+0x227/0x690 fs/namespace.c:3472 path_mount+0x49b/0xb30 fs/namespace.c:3799 do_mount fs/namespace.c:3812 [inline] __do_sys_mount fs/namespace.c:4020 [inline] __se_sys_mount+0x27c/0x2d0 fs/namespace.c:3997 __x64_sys_mount+0x67/0x80 fs/namespace.c:3997 x64_sys_call+0x203e/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:166 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x0000000000000000 -> 0x0000000000000001 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 7830 Comm: syz.1.1254 Not tainted 6.11.0-rc7-syzkaller-00020-g8d8d276ba2fb #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 ================================================================== ext4 filesystem being mounted at /165/file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa supports timestamps until 2038-01-19 (0x7fffffff)