loop4: detected capacity change from 0 to 128 UDF-fs: error (device loop4): udf_read_tagged: read failed, block=256, location=256 ===================================================== BUG: KMSAN: uninit-value in crc_itu_t_byte include/linux/crc-itu-t.h:22 [inline] BUG: KMSAN: uninit-value in crc_itu_t+0x287/0x2e0 lib/crc-itu-t.c:60 crc_itu_t_byte include/linux/crc-itu-t.h:22 [inline] crc_itu_t+0x287/0x2e0 lib/crc-itu-t.c:60 udf_update_tag+0x5c/0x2a0 fs/udf/misc.c:261 udf_rename+0x1202/0x16d0 fs/udf/namei.c:879 vfs_rename+0x1d9a/0x2280 fs/namei.c:4887 do_renameat2+0x18cc/0x1d50 fs/namei.c:5044 __do_sys_renameat2 fs/namei.c:5078 [inline] __se_sys_renameat2 fs/namei.c:5075 [inline] __ia32_sys_renameat2+0x153/0x200 fs/namei.c:5075 ia32_sys_call+0x388d/0x40a0 arch/x86/include/generated/asm/syscalls_32.h:354 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0xb4/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x38/0x80 arch/x86/entry/common.c:411 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:449 entry_SYSENTER_compat_after_hwframe+0x84/0x8e Local variable diriter created at: udf_rename+0xbe/0x16d0 fs/udf/namei.c:767 vfs_rename+0x1d9a/0x2280 fs/namei.c:4887 CPU: 0 PID: 5987 Comm: syz-executor.4 Not tainted 6.9.0-syzkaller-02339-g101b7a97143a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 =====================================================