================================================================== BUG: KCSAN: data-race in delete_from_page_cache_batch / nr_blockdev_pages write to 0xffff888100488bf8 of 8 bytes by task 18877 on cpu 0: page_cache_delete_batch mm/filemap.c:335 [inline] delete_from_page_cache_batch+0x5b2/0x780 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+0x3a5/0x78f0 fs/ext4/super.c:3930 mount_bdev+0x1e8/0x290 fs/super.c:1370 ext4_mount+0x2d/0x40 fs/ext4/super.c:6523 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 0xffff888100488bf8 of 8 bytes by task 47 on cpu 1: nr_blockdev_pages+0x7f/0xd0 block/bdev.c:522 si_meminfo+0x3a/0x60 mm/page_alloc.c:5778 update_defense_level+0x46/0x560 net/netfilter/ipvs/ip_vs_ctl.c:102 defense_work_handler+0x1b/0x80 net/netfilter/ipvs/ip_vs_ctl.c:236 process_one_work+0x3fc/0x980 kernel/workqueue.c:2298 worker_thread+0x616/0xa70 kernel/workqueue.c:2445 kthread+0x2c7/0x2e0 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 value changed: 0x0000000000000057 -> 0x0000000000000048 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 47 Comm: kworker/1:2 Tainted: G W 5.15.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_long defense_work_handler ==================================================================