===================================================== BUG: KMSAN: uninit-value in ondemand_readahead+0xddf/0x1a10 mm/readahead.c:596 ondemand_readahead+0xddf/0x1a10 mm/readahead.c:596 page_cache_sync_ra+0x899/0x8d0 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+0x76d/0x1530 fs/cramfs/inode.c:278 cramfs_read_folio+0x4bf/0x12f0 fs/cramfs/inode.c:848 read_pages+0xfc2/0x14b0 mm/readahead.c:181 page_cache_ra_unbounded+0xa60/0xae0 mm/readahead.c:270 do_page_cache_ra mm/readahead.c:300 [inline] page_cache_ra_order+0x12d4/0x13b0 mm/readahead.c:560 ondemand_readahead+0x1376/0x1a10 mm/readahead.c:682 page_cache_sync_ra+0x899/0x8d0 mm/readahead.c:709 page_cache_sync_readahead include/linux/pagemap.h:1210 [inline] filemap_get_pages mm/filemap.c:2600 [inline] filemap_read+0xb48/0x45f0 mm/filemap.c:2694 generic_file_read_iter+0x198/0xb90 mm/filemap.c:2840 __kernel_read+0x56e/0xdb0 fs/read_write.c:428 integrity_kernel_read+0xfc/0x140 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+0x10d0/0x4000 security/integrity/ima/ima_crypto.c:573 ima_collect_measurement+0x677/0xe90 security/integrity/ima/ima_api.c:292 process_measurement+0x24d7/0x3930 security/integrity/ima/ima_main.c:339 ima_file_check+0x126/0x170 security/integrity/ima/ima_main.c:519 do_open fs/namei.c:3559 [inline] path_openat+0x4ec8/0x5bc0 fs/namei.c:3714 do_filp_open+0x309/0x760 fs/namei.c:3741 do_sys_openat2+0x257/0x8e0 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+0x301/0x360 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+0x10a/0x1530 fs/cramfs/inode.c:278 cramfs_read_folio+0x4bf/0x12f0 fs/cramfs/inode.c:848 CPU: 0 PID: 18516 Comm: syz-executor.3 Not tainted 6.2.0-rc7-syzkaller-80760-g8c89ecf5c13b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 =====================================================