loop_reread_partitions: partition scan of loop0 (PuxvOD180"aUM- =eYJCiԲ%8q) failed (rc=-5) ================================================================== BUG: KCSAN: data-race in blk_mq_unfreeze_queue / blk_queue_enter write to 0xffff888131996d54 of 4 bytes by task 3851 on cpu 1: blk_mq_unfreeze_queue+0x3c/0xc0 block/blk-mq.c:194 loop_set_status+0x43e/0x5a0 drivers/block/loop.c:1564 lo_ioctl+0x82c/0x13e0 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 read to 0xffff888131996d54 of 4 bytes by task 3825 on cpu 0: blk_queue_enter+0x2c8/0x570 block/blk-core.c:462 bio_queue_enter block/blk-core.c:477 [inline] __submit_bio_noacct_mq block/blk-core.c:989 [inline] submit_bio_noacct+0x6c4/0x7d0 block/blk-core.c:1031 submit_bio+0x10c/0x190 submit_bh_wbc+0x2f3/0x330 fs/buffer.c:3054 submit_bh fs/buffer.c:3060 [inline] block_read_full_page+0x79c/0x880 fs/buffer.c:2339 blkdev_readpage+0x18/0x20 block/fops.c:342 do_read_cache_page+0x509/0x7d0 mm/filemap.c:3458 read_cache_page+0x36/0x40 mm/filemap.c:3559 read_mapping_page include/linux/pagemap.h:515 [inline] read_part_sector+0x7c/0x1b0 block/partitions/core.c:725 read_lba+0x17e/0x290 block/partitions/efi.c:248 find_valid_gpt block/partitions/efi.c:603 [inline] efi_partition+0x241/0x1240 block/partitions/efi.c:720 check_partition block/partitions/core.c:147 [inline] blk_add_partitions block/partitions/core.c:610 [inline] bdev_disk_changed+0x511/0xe60 block/partitions/core.c:696 loop_reread_partitions drivers/block/loop.c:693 [inline] loop_change_fd drivers/block/loop.c:804 [inline] lo_ioctl+0x1329/0x13e0 drivers/block/loop.c:1848 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: 0x00000001 -> 0x00000000 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 3825 Comm: syz-executor.1 Not tainted 5.15.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ================================================================== loop0: unable to read partition table loop_reread_partitions: partition scan of loop0 (PuxvOD180"aUM- =eYJCiԲ%8q) failed (rc=-5)