================================================================== BUG: KCSAN: data-race in __lru_add_drain_all / __pagevec_lru_add write to 0xffff888237c226a8 of 1 bytes by task 26150 on cpu 0: pagevec_reinit include/linux/pagevec.h:56 [inline] __pagevec_lru_add+0x243/0x270 mm/swap.c:1066 lru_add_drain_cpu+0x6a/0x260 mm/swap.c:603 lru_add_drain mm/swap.c:707 [inline] __pagevec_release+0x4b/0xc0 mm/swap.c:987 pagevec_release include/linux/pagevec.h:81 [inline] __invalidate_mapping_pages+0x284/0x310 mm/truncate.c:509 invalidate_mapping_pages+0x23/0x30 mm/truncate.c:533 invalidate_bdev+0x67/0x80 block/bdev.c:89 invalidate_disk+0x25/0xb0 block/genhd.c:644 __loop_clr_fd+0x41f/0x6c0 drivers/block/loop.c:1147 loop_clr_fd drivers/block/loop.c:1237 [inline] lo_ioctl+0x985/0x1270 drivers/block/loop.c:1562 blkdev_ioctl+0x20e/0x440 block/ioctl.c:597 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+0x44/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff888237c226a8 of 1 bytes by task 26124 on cpu 1: pagevec_count include/linux/pagevec.h:61 [inline] __lru_add_drain_all+0x12c/0x3e0 mm/swap.c:825 lru_add_drain_all+0xc/0x10 mm/swap.c:847 invalidate_bdev+0x56/0x80 block/bdev.c:88 invalidate_disk+0x25/0xb0 block/genhd.c:644 __loop_clr_fd+0x41f/0x6c0 drivers/block/loop.c:1147 loop_clr_fd drivers/block/loop.c:1237 [inline] lo_ioctl+0x985/0x1270 drivers/block/loop.c:1562 blkdev_ioctl+0x20e/0x440 block/ioctl.c:597 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+0x44/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x0a -> 0x00 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 26124 Comm: syz-executor.5 Not tainted 5.15.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================