=====================================================
BUG: KMSAN: uninit-value in number+0xd27/0x24c0 lib/vsprintf.c:463
 number+0xd27/0x24c0 lib/vsprintf.c:463
 vsnprintf+0x1f3a/0x36a0 lib/vsprintf.c:2818
 snprintf+0x244/0x290 lib/vsprintf.c:2885
 tomoyo_print_header security/tomoyo/audit.c:165 [inline]
 tomoyo_init_log+0xd39/0x3b50 security/tomoyo/audit.c:255
 tomoyo_supervisor+0x8bd/0x2820 security/tomoyo/common.c:2097
 tomoyo_audit_path_number_log security/tomoyo/file.c:235 [inline]
 tomoyo_path_number_perm+0x8be/0xb00 security/tomoyo/file.c:734
 tomoyo_file_ioctl+0x72/0x90 security/tomoyo/tomoyo.c:329
 security_file_ioctl+0x10a/0x210 security/security.c:1539
 __do_sys_ioctl fs/ioctl.c:1063 [inline]
 __se_sys_ioctl+0x133/0x4a0 fs/ioctl.c:1055
 __x64_sys_ioctl+0xd8/0x110 fs/ioctl.c:1055
 do_syscall_64+0x55/0xc0 arch/x86/entry/common.c:49
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Local variable ----mmap_event@perf_event_mmap created at:
 perf_event_mmap+0x66/0x2ab0 kernel/events/core.c:8505
 __install_special_mapping+0x914/0x980 mm/mmap.c:3493
=====================================================
Kernel panic - not syncing: panic_on_kmsan set ...
CPU: 0 PID: 7987 Comm: ifupdown-hotplu Tainted: G    B             5.13.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x25a/0x2f6 lib/dump_stack.c:120
 panic+0x4c7/0xe98 kernel/panic.c:231
 kmsan_report+0x2ee/0x300 mm/kmsan/report.c:186
 __msan_warning+0xd7/0x150 mm/kmsan/instrumentation.c:208
 number+0xd27/0x24c0 lib/vsprintf.c:463
 vsnprintf+0x1f3a/0x36a0 lib/vsprintf.c:2818
 snprintf+0x244/0x290 lib/vsprintf.c:2885
 tomoyo_print_header security/tomoyo/audit.c:165 [inline]
 tomoyo_init_log+0xd39/0x3b50 security/tomoyo/audit.c:255
 tomoyo_supervisor+0x8bd/0x2820 security/tomoyo/common.c:2097
 tomoyo_audit_path_number_log security/tomoyo/file.c:235 [inline]
 tomoyo_path_number_perm+0x8be/0xb00 security/tomoyo/file.c:734
 tomoyo_file_ioctl+0x72/0x90 security/tomoyo/tomoyo.c:329
 security_file_ioctl+0x10a/0x210 security/security.c:1539
 __do_sys_ioctl fs/ioctl.c:1063 [inline]
 __se_sys_ioctl+0x133/0x4a0 fs/ioctl.c:1055
 __x64_sys_ioctl+0xd8/0x110 fs/ioctl.c:1055
 do_syscall_64+0x55/0xc0 arch/x86/entry/common.c:49
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f62936ed80a
Code: ff e9 62 fe ff ff 66 2e 0f 1f 84 00 00 00 00 00 53 49 89 f0 48 63 ff be 01 54 00 00 b8 10 00 00 00 48 83 ec 30 48 89 e2 0f 05 <48> 3d 00 f0 ff ff 77 6e 85 c0 89 c3 75 5c 8b 04 24 8b 54 24 0c 4c
RSP: 002b:00007ffc88b5b620 EFLAGS: 00000202 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000000000d RCX: 00007f62936ed80a
RDX: 00007ffc88b5b620 RSI: 0000000000005401 RDI: 0000000000000001
RBP: 000055c21f4fc990 R08: 00007ffc88b5b660 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000000000 R14: 000055c21f4fca40 R15: 000055c21e215ce4
Kernel Offset: disabled
Rebooting in 86400 seconds..