loop5: detected capacity change from 0 to 8
=====================================================
BUG: KMSAN: uninit-value in ondemand_readahead+0xddf/0x1720 mm/readahead.c:596
 ondemand_readahead+0xddf/0x1720 mm/readahead.c:596
 page_cache_sync_ra+0x72b/0x760 mm/readahead.c:709
 page_cache_sync_readahead include/linux/pagemap.h:1210 [inline]
 cramfs_blkdev_read fs/cramfs/inode.c:217 [inline]
 cramfs_read+0x611/0x1280 fs/cramfs/inode.c:278
 cramfs_read_folio+0x441/0x1100 fs/cramfs/inode.c:848
 read_pages+0xe72/0x1200 mm/readahead.c:181
 page_cache_ra_unbounded+0x89e/0x960 mm/readahead.c:270
 do_page_cache_ra mm/readahead.c:300 [inline]
 page_cache_ra_order+0xfef/0x10a0 mm/readahead.c:560
 ondemand_readahead+0x1336/0x1720 mm/readahead.c:682
 page_cache_sync_ra+0x72b/0x760 mm/readahead.c:709
 page_cache_sync_readahead include/linux/pagemap.h:1210 [inline]
 filemap_get_pages mm/filemap.c:2601 [inline]
 filemap_read+0xaa7/0x43a0 mm/filemap.c:2695
 generic_file_read_iter+0x12c/0xaa0 mm/filemap.c:2841
 __kernel_read+0x3c5/0xaa0 fs/read_write.c:428
 integrity_kernel_read+0x84/0xb0 security/integrity/iint.c:199
 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:485 [inline]
 ima_calc_file_shash security/integrity/ima/ima_crypto.c:516 [inline]
 ima_calc_file_hash+0x18c3/0x3e70 security/integrity/ima/ima_crypto.c:573
 ima_collect_measurement+0x58c/0xb30 security/integrity/ima/ima_api.c:292
 process_measurement+0x20ac/0x3680 security/integrity/ima/ima_main.c:339
 ima_file_check+0xc0/0x120 security/integrity/ima/ima_main.c:519
 do_open fs/namei.c:3559 [inline]
 path_openat+0x4a03/0x5750 fs/namei.c:3714
 do_filp_open+0x24d/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_open fs/open.c:1377 [inline]
 __se_compat_sys_open fs/open.c:1375 [inline]
 __ia32_compat_sys_open+0x279/0x2f0 fs/open.c:1375
 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+0x37/0x80 arch/x86/entry/common.c:203
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:246
 entry_SYSENTER_compat_after_hwframe+0x70/0x82

Local variable ra.i created at:
 cramfs_blkdev_read fs/cramfs/inode.c:186 [inline]
 cramfs_read+0xc0/0x1280 fs/cramfs/inode.c:278
 cramfs_read_folio+0x441/0x1100 fs/cramfs/inode.c:848

CPU: 1 PID: 5605 Comm: syz-executor.5 Not tainted 6.2.0-syzkaller-81152-g97e36f4aa06f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
=====================================================