R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007ff34869a000 R15: 0000000020013000 EXT4-fs (loop4): not enough memory ================================================================== BUG: KCSAN: data-race in __lru_add_drain_all / lru_cache_add_inactive_or_unevictable write to 0xffff888237d22528 of 1 bytes by task 8990 on cpu 1: pagevec_add include/linux/pagevec.h:74 [inline] pagevec_add_and_need_flush mm/swap.c:222 [inline] lru_cache_add mm/swap.c:452 [inline] lru_cache_add_inactive_or_unevictable+0xaa/0x270 mm/swap.c:484 do_anonymous_page+0x716/0x8b0 mm/memory.c:3808 handle_pte_fault mm/memory.c:4557 [inline] __handle_mm_fault mm/memory.c:4694 [inline] handle_mm_fault+0x7f5/0x1580 mm/memory.c:4792 do_user_addr_fault+0x609/0xbe0 arch/x86/mm/fault.c:1397 handle_page_fault arch/x86/mm/fault.c:1485 [inline] exc_page_fault+0x91/0x220 arch/x86/mm/fault.c:1541 asm_exc_page_fault+0x1e/0x30 read to 0xffff888237d22528 of 1 bytes by task 9041 on cpu 0: pagevec_count include/linux/pagevec.h:61 [inline] __lru_add_drain_all+0x12c/0x3e0 mm/swap.c:819 lru_add_drain_all+0xc/0x10 mm/swap.c:841 invalidate_bdev+0x56/0x80 block/bdev.c:87 __loop_clr_fd+0x521/0x850 drivers/block/loop.c:1399 loop_clr_fd drivers/block/loop.c:1494 [inline] lo_ioctl+0xac5/0x13e0 drivers/block/loop.c:1850 blkdev_ioctl+0x1d0/0x3f0 block/ioctl.c:589 block_ioctl+0x6e/0x80 block/fops.c:478 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: 0x05 -> 0x03 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 9041 Comm: syz-executor.4 Not tainted 5.15.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================