BUG: KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add

write to 0xffff888237c27968 of 1 bytes by task 17380 on cpu 0:
 pagevec_reinit include/linux/pagevec.h:57 [inline]
 __pagevec_lru_add+0x2f5/0x320 mm/swap.c:1065
 lru_add_drain_cpu+0x6a/0x260 mm/swap.c:601
 lru_add_drain+0x21/0x60 mm/swap.c:706
 shift_arg_pages fs/exec.c:715 [inline]
 setup_arg_pages+0x4e3/0x720 fs/exec.c:832
 load_elf_binary+0x853/0x1970 fs/binfmt_elf.c:1019
 search_binary_handler fs/exec.c:1728 [inline]
 exec_binprm+0x1d9/0x800 fs/exec.c:1769
 bprm_execve+0x379/0x4e0 fs/exec.c:1838
 kernel_execve+0x65f/0x6c0 fs/exec.c:2003
 call_usermodehelper_exec_async+0x1a6/0x250 kernel/umh.c:112
 ret_from_fork+0x1f/0x30

read to 0xffff888237c27968 of 1 bytes by task 17363 on cpu 1:
 pagevec_count include/linux/pagevec.h:62 [inline]
 __lru_add_drain_all+0x118/0x3e0 mm/swap.c:826
 lru_add_drain_all+0xc/0x10 mm/swap.c:849
 invalidate_bdev+0x56/0x80 block/bdev.c:87
 invalidate_disk+0x25/0xb0 block/genhd.c:678
 __loop_clr_fd+0x176/0x3c0 drivers/block/loop.c:1159
 loop_clr_fd drivers/block/loop.c:1252 [inline]
 lo_ioctl+0xd8c/0x1290 drivers/block/loop.c:1558
 blkdev_ioctl+0x20e/0x440 block/ioctl.c:614
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0xcb/0x140 fs/ioctl.c:856
 __x64_sys_ioctl+0x3f/0x50 fs/ioctl.c:856
 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+0x46/0xb0

value changed: 0x01 -> 0x00

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 17363 Comm: syz-executor.5 Not tainted 5.19.0-rc1-syzkaller-00262-g0885eacdc81f-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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