exFAT-fs (loop3): failed to load upcase table (idx : 0x00010000, chksum : 0xf794f3fa, utbl_chksum : 0xe619d30d) ===================================================== BUG: KMSAN: uninit-value in iov_iter_alignment_iovec+0x1a8/0x470 lib/iov_iter.c:894 iov_iter_alignment_iovec+0x1a8/0x470 lib/iov_iter.c:894 iov_iter_alignment+0x1ac/0x2d0 lib/iov_iter.c:939 __blockdev_direct_IO+0x170/0x6460 fs/direct-io.c:1121 blockdev_direct_IO include/linux/fs.h:3313 [inline] exfat_direct_IO+0x191/0x900 fs/exfat/inode.c:482 generic_file_direct_write+0x275/0x6a0 mm/filemap.c:3979 __generic_file_write_iter+0x242/0x460 mm/filemap.c:4143 exfat_file_write_iter+0x894/0xfb0 fs/exfat/file.c:598 io_write+0xd5a/0x2360 io_uring/rw.c:1082 io_issue_sqe+0x420/0x2130 io_uring/io_uring.c:1712 io_queue_sqe io_uring/io_uring.c:1922 [inline] io_submit_sqe io_uring/io_uring.c:2177 [inline] io_submit_sqes+0x11bc/0x2f80 io_uring/io_uring.c:2294 __do_sys_io_uring_enter io_uring/io_uring.c:3364 [inline] __se_sys_io_uring_enter+0x423/0x4b10 io_uring/io_uring.c:3299 __ia32_sys_io_uring_enter+0x11d/0x1a0 io_uring/io_uring.c:3299 ia32_sys_call+0xd59/0x4180 arch/x86/include/generated/asm/syscalls_32.h:427 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0xb0/0x110 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 Uninit was created at: slab_post_alloc_hook mm/slub.c:4091 [inline] slab_alloc_node mm/slub.c:4134 [inline] __do_kmalloc_node mm/slub.c:4263 [inline] __kmalloc_noprof+0x661/0xf30 mm/slub.c:4276 kmalloc_noprof include/linux/slab.h:883 [inline] io_alloc_async_data+0xc0/0x220 io_uring/io_uring.c:1623 io_rw_alloc_async io_uring/rw.c:228 [inline] io_prep_rw_setup io_uring/rw.c:245 [inline] io_prep_rw+0x921/0xcd0 io_uring/rw.c:286 io_prep_rwv+0xb3/0x510 io_uring/rw.c:305 io_prep_writev+0x3a/0x50 io_uring/rw.c:325 io_init_req io_uring/io_uring.c:2092 [inline] io_submit_sqe io_uring/io_uring.c:2139 [inline] io_submit_sqes+0x1082/0x2f80 io_uring/io_uring.c:2294 __do_sys_io_uring_enter io_uring/io_uring.c:3364 [inline] __se_sys_io_uring_enter+0x423/0x4b10 io_uring/io_uring.c:3299 __ia32_sys_io_uring_enter+0x11d/0x1a0 io_uring/io_uring.c:3299 ia32_sys_call+0xd59/0x4180 arch/x86/include/generated/asm/syscalls_32.h:427 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0xb0/0x110 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 CPU: 0 UID: 0 PID: 6160 Comm: syz.3.66 Not tainted 6.12.0-syzkaller-01518-ga5c93bfec0be #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 =====================================================