loop1: detected capacity change from 0 to 4
EXT4-fs (loop1): Can't read superblock on 2nd try
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BUG: KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add

write to 0xffff888237c27998 of 1 bytes by task 4550 on cpu 0:
 pagevec_reinit include/linux/pagevec.h:57 [inline]
 __pagevec_lru_add+0x243/0x270 mm/swap.c:1076
 lru_add_drain_cpu+0x6a/0x260 mm/swap.c:613
 lru_add_drain+0x21/0x60 mm/swap.c:717
 follow_page_pte mm/gup.c:615 [inline]
 follow_pmd_mask mm/gup.c:698 [inline]
 follow_pud_mask mm/gup.c:781 [inline]
 follow_p4d_mask mm/gup.c:807 [inline]
 follow_page_mask+0xda3/0xfe0 mm/gup.c:866
 __get_user_pages+0x2f6/0xc10 mm/gup.c:1188
 populate_vma_page_range mm/gup.c:1522 [inline]
 __mm_populate+0x24d/0x370 mm/gup.c:1631
 mm_populate include/linux/mm.h:2702 [inline]
 __do_sys_mlockall+0x24b/0x2d0 mm/mlock.c:800
 __se_sys_mlockall mm/mlock.c:776 [inline]
 __x64_sys_mlockall+0x1a/0x20 mm/mlock.c:776
 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 0xffff888237c27998 of 1 bytes by task 4563 on cpu 1:
 pagevec_count include/linux/pagevec.h:62 [inline]
 __lru_add_drain_all+0x12c/0x3e0 mm/swap.c:835
 lru_add_drain_all+0xc/0x10 mm/swap.c:857
 invalidate_bdev+0x56/0x80 block/bdev.c:87
 invalidate_disk+0x25/0xb0 block/genhd.c:665
 __loop_clr_fd+0x3fc/0x650 drivers/block/loop.c:1148
 loop_clr_fd drivers/block/loop.c:1231 [inline]
 lo_ioctl+0xa37/0x1260 drivers/block/loop.c:1557
 blkdev_ioctl+0x20e/0x440 block/ioctl.c:588
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0xcb/0x140 fs/ioctl.c:860
 __x64_sys_ioctl+0x3f/0x50 fs/ioctl.c:860
 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

value changed: 0x01 -> 0x00

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 4563 Comm: syz-executor.1 Not tainted 5.17.0-rc6-syzkaller-00054-gfb184c4af9b9-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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