FAT-fs (loop1): bogus number of reserved sectors
FAT-fs (loop1): Can't find a valid FAT filesystem
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BUG: KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add

write to 0xffff888237c27968 of 1 bytes by task 1930 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
 zap_page_range+0x5d/0x2a0 mm/memory.c:1741
 madvise_dontneed_single_vma mm/madvise.c:788 [inline]
 madvise_dontneed_free mm/madvise.c:871 [inline]
 madvise_vma_behavior mm/madvise.c:1010 [inline]
 madvise_walk_vmas mm/madvise.c:1232 [inline]
 do_madvise+0xb46/0x1af0 mm/madvise.c:1410
 __do_sys_madvise mm/madvise.c:1423 [inline]
 __se_sys_madvise mm/madvise.c:1421 [inline]
 __x64_sys_madvise+0x5d/0x70 mm/madvise.c:1421
 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+0x63/0xcd

read to 0xffff888237c27968 of 1 bytes by task 7453 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:688
 __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+0x63/0xcd

value changed: 0x09 -> 0x00

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 7453 Comm: syz-executor.1 Not tainted 5.19.0-syzkaller-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
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