loop4: p2 < > ldm_parse_privhead(): Cannot find PRIVHEAD structure. LDM database is corrupt. Aborting. ldm_validate_privheads(): Cannot find PRIVHEAD 1. loop5: p2 < > ================================================================== BUG: KCSAN: data-race in lru_add_drain_all / lru_cache_add write to 0xffff88812c128ac0 of 1 bytes by task 26778 on cpu 1: pagevec_add include/linux/pagevec.h:81 [inline] lru_cache_add+0x92/0x180 mm/swap.c:472 lru_cache_add_inactive_or_unevictable+0x46/0x160 mm/swap.c:506 do_anonymous_page+0x9aa/0xf40 mm/memory.c:3400 handle_pte_fault mm/memory.c:4209 [inline] __handle_mm_fault mm/memory.c:4346 [inline] handle_mm_fault+0x14fd/0x1af0 mm/memory.c:4444 faultin_page mm/gup.c:878 [inline] __get_user_pages+0xa3d/0x1010 mm/gup.c:1090 __get_user_pages_locked mm/gup.c:1273 [inline] __get_user_pages_remote+0x100/0x500 mm/gup.c:1772 get_user_pages_remote+0x57/0x80 mm/gup.c:1849 get_arg_page fs/exec.c:220 [inline] copy_string_kernel+0x174/0x370 fs/exec.c:631 kernel_execve+0x372/0x640 fs/exec.c:2067 call_usermodehelper_exec_async+0x17e/0x230 kernel/umh.c:101 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 read to 0xffff88812c128ac0 of 1 bytes by task 5079 on cpu 0: pagevec_count include/linux/pagevec.h:68 [inline] lru_add_drain_all+0x118/0x3b0 mm/swap.c:796 invalidate_bdev+0x50/0x70 fs/block_dev.c:96 blk_drop_partitions+0x5c/0x1e0 block/partitions/core.c:633 bdev_disk_changed+0x88/0x320 fs/block_dev.c:1392 blkdev_reread_part block/ioctl.c:103 [inline] blkdev_common_ioctl+0xd00/0x10b0 block/ioctl.c:549 blkdev_ioctl+0x167/0x410 block/ioctl.c:618 block_ioctl+0x6d/0x80 fs/block_dev.c:1871 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl+0xcb/0x140 fs/ioctl.c:739 __x64_sys_ioctl+0x3f/0x50 fs/ioctl.c:739 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 5079 Comm: systemd-udevd Not tainted 5.9.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================