=====================================================
BUG: KMSAN: uninit-value in check_pointer lib/vsprintf.c:710 [inline]
BUG: KMSAN: uninit-value in string+0x3da/0x710 lib/vsprintf.c:722
 check_pointer lib/vsprintf.c:710 [inline]
 string+0x3da/0x710 lib/vsprintf.c:722
 vsnprintf+0x2036/0x3460 lib/vsprintf.c:2806
 seq_vprintf fs/seq_file.c:391 [inline]
 seq_printf+0x318/0x4f0 fs/seq_file.c:406
 ipv6_route_native_seq_show net/ipv6/ip6_fib.c:2512 [inline]
 ipv6_route_seq_show+0x9f5/0xaf0 net/ipv6/ip6_fib.c:2682
 traverse+0x34b/0xd70 fs/seq_file.c:111
 seq_read_iter+0x1d76/0x2170 fs/seq_file.c:195
 seq_read+0x645/0x7c0 fs/seq_file.c:162
 pde_read fs/proc/inode.c:311 [inline]
 proc_reg_read+0x3a1/0x560 fs/proc/inode.c:323
 vfs_read+0x5f2/0x16d0 fs/read_write.c:480
 ksys_pread64 fs/read_write.c:672 [inline]
 __do_sys_pread64 fs/read_write.c:682 [inline]
 __se_sys_pread64 fs/read_write.c:679 [inline]
 __x64_sys_pread64+0x35e/0x430 fs/read_write.c:679
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Local variable filename created at:
 process_measurement+0x1c9/0x3970 security/integrity/ima/ima_main.c:209
 ima_file_check+0x126/0x170 security/integrity/ima/ima_main.c:517

CPU: 0 PID: 6300 Comm: syz-executor.5 Not tainted 5.18.0-syzkaller-16253-g2f3064574275 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
=====================================================