loop1: detected capacity change from 0 to 8
=====================================================
BUG: KMSAN: uninit-value in ondemand_readahead+0xd4b/0x1720 mm/readahead.c:596
 ondemand_readahead+0xd4b/0x1720 mm/readahead.c:596
 page_cache_sync_ra+0x733/0x770 mm/readahead.c:709
 page_cache_sync_readahead include/linux/pagemap.h:1210 [inline]
 cramfs_blkdev_read+0x602/0x1240 fs/cramfs/inode.c:217
 cramfs_read fs/cramfs/inode.c:278 [inline]
 cramfs_lookup+0x1b8/0x870 fs/cramfs/inode.c:767
 lookup_open fs/namei.c:3391 [inline]
 open_last_lookups fs/namei.c:3481 [inline]
 path_openat+0x24d6/0x5710 fs/namei.c:3711
 do_filp_open+0x249/0x660 fs/namei.c:3741
 do_sys_openat2+0x1f0/0x910 fs/open.c:1310
 do_sys_open fs/open.c:1326 [inline]
 __do_compat_sys_openat fs/open.c:1386 [inline]
 __se_compat_sys_openat fs/open.c:1384 [inline]
 __ia32_compat_sys_openat+0x2a7/0x330 fs/open.c:1384
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203
 do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:246
 entry_SYSENTER_compat_after_hwframe+0x70/0x82

Local variable ra created at:
 cramfs_blkdev_read+0xb9/0x1240 fs/cramfs/inode.c:186
 cramfs_read fs/cramfs/inode.c:278 [inline]
 cramfs_lookup+0x1b8/0x870 fs/cramfs/inode.c:767

CPU: 0 PID: 5631 Comm: syz-executor.1 Not tainted 6.2.0-rc5-syzkaller-80200-g41c66f470616 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
=====================================================