=====================================================
BUG: KMSAN: uninit-value in number+0x851/0x23d0 lib/vsprintf.c:490
 number+0x851/0x23d0 lib/vsprintf.c:490
 vsnprintf+0x1f0d/0x3650 lib/vsprintf.c:2861
 snprintf+0x24a/0x290 lib/vsprintf.c:2928
 tomoyo_print_header security/tomoyo/audit.c:165 [inline]
 tomoyo_init_log+0xd1f/0x3ad0 security/tomoyo/audit.c:255
 tomoyo_supervisor+0x8c0/0x27a0 security/tomoyo/common.c:2097
 tomoyo_audit_path_number_log security/tomoyo/file.c:235 [inline]
 tomoyo_path_number_perm+0x8b1/0xaf0 security/tomoyo/file.c:734
 tomoyo_file_ioctl+0x77/0x90 security/tomoyo/tomoyo.c:327
 security_file_ioctl+0xfd/0x200 security/security.c:1544
 __do_compat_sys_ioctl fs/ioctl.c:924 [inline]
 __se_compat_sys_ioctl+0x175/0x1150 fs/ioctl.c:914
 __ia32_compat_sys_ioctl+0xd9/0x110 fs/ioctl.c:914
 do_syscall_32_irqs_on arch/x86/entry/common.c:114 [inline]
 __do_fast_syscall_32+0x96/0xf0 arch/x86/entry/common.c:180
 do_fast_syscall_32+0x34/0x70 arch/x86/entry/common.c:205
 do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:248
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c

Local variable num_cfm_mep_infos created at:
 br_get_link_af_size_filtered+0x81/0x1010
 rtnl_link_get_af_size net/core/rtnetlink.c:598 [inline]
 if_nlmsg_size+0xb7c/0xf30 net/core/rtnetlink.c:1040

CPU: 1 PID: 3492 Comm: syz-executor.1 Not tainted 5.17.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
=====================================================