=====================================================
BUG: KMSAN: uninit-value in check_pointer lib/vsprintf.c:705 [inline]
BUG: KMSAN: uninit-value in va_format lib/vsprintf.c:1680 [inline]
BUG: KMSAN: uninit-value in pointer+0x16f8/0x2060 lib/vsprintf.c:2425
 check_pointer lib/vsprintf.c:705 [inline]
 va_format lib/vsprintf.c:1680 [inline]
 pointer+0x16f8/0x2060 lib/vsprintf.c:2425
 vsnprintf+0x1a9b/0x3650 lib/vsprintf.c:2799
 vprintk_store+0x537/0x2150 kernel/printk/printk.c:2135
 vprintk_emit+0x25c/0x950 kernel/printk/printk.c:2229
 vprintk_default+0x86/0xa0 kernel/printk/printk.c:2256
 vprintk+0x15f/0x180 kernel/printk/printk_safe.c:50
 _printk+0x18d/0x1cf kernel/printk/printk.c:2266
 __ext4_error_inode+0x884/0xcd0 fs/ext4/super.c:807
 __ext4_iget+0x1793/0x64f0 fs/ext4/inode.c:4734
 ext4_lookup+0xbe5/0x1400 fs/ext4/namei.c:1785
 __lookup_hash+0x2b5/0x590 fs/namei.c:1608
 do_unlinkat+0x363/0x10a0 fs/namei.c:4202
 __do_sys_unlinkat fs/namei.c:4261 [inline]
 __se_sys_unlinkat fs/namei.c:4254 [inline]
 __x64_sys_unlinkat+0x1f8/0x280 fs/namei.c:4254
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x54/0xd0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Local variable digest created at:
 fscrypt_match_name+0xb2/0x480 fs/crypto/fname.c:510
 ext4_match+0x332/0xa90 fs/ext4/namei.c:1453

CPU: 1 PID: 3476 Comm: syz-fuzzer Not tainted 5.17.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
=====================================================