===================================================== BUG: KMSAN: uninit-value in number+0xd27/0x24c0 lib/vsprintf.c:490 number+0xd27/0x24c0 lib/vsprintf.c:490 vsnprintf+0x1f3a/0x36a0 lib/vsprintf.c:2863 snprintf+0x244/0x290 lib/vsprintf.c:2930 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_log security/tomoyo/file.c:168 [inline] tomoyo_path_permission security/tomoyo/file.c:587 [inline] tomoyo_path_perm+0x96c/0xc70 security/tomoyo/file.c:838 tomoyo_path_unlink+0xdc/0x170 security/tomoyo/tomoyo.c:149 security_path_unlink+0x1f5/0x2e0 security/security.c:1155 do_unlinkat+0x6ba/0x1110 fs/namei.c:4165 __do_sys_unlink fs/namei.c:4217 [inline] __se_sys_unlink fs/namei.c:4215 [inline] __ia32_sys_unlink+0xa4/0xd0 fs/namei.c:4215 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 in created at: __ext4fs_dirhash+0xa9/0x2580 fs/ext4/hash.c:207 ext4fs_dirhash+0x3a4/0x6a0 fs/ext4/hash.c:318 ===================================================== Kernel panic - not syncing: panic_on_kmsan set ... CPU: 0 PID: 6791 Comm: syz-executor.1 Tainted: G B 5.15.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1ff/0x28e lib/dump_stack.c:106 dump_stack+0x25/0x28 lib/dump_stack.c:113 panic+0x44f/0xdeb kernel/panic.c:232 kmsan_report+0x2e9/0x2f0 mm/kmsan/report.c:200 __msan_warning+0xb4/0x100 mm/kmsan/instrumentation.c:224 number+0xd27/0x24c0 lib/vsprintf.c:490 vsnprintf+0x1f3a/0x36a0 lib/vsprintf.c:2863 snprintf+0x244/0x290 lib/vsprintf.c:2930 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_log security/tomoyo/file.c:168 [inline] tomoyo_path_permission security/tomoyo/file.c:587 [inline] tomoyo_path_perm+0x96c/0xc70 security/tomoyo/file.c:838 tomoyo_path_unlink+0xdc/0x170 security/tomoyo/tomoyo.c:149 security_path_unlink+0x1f5/0x2e0 security/security.c:1155 do_unlinkat+0x6ba/0x1110 fs/namei.c:4165 __do_sys_unlink fs/namei.c:4217 [inline] __se_sys_unlink fs/namei.c:4215 [inline] __ia32_sys_unlink+0xa4/0xd0 fs/namei.c:4215 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 RIP: 0023:0xf6ecf549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 RSP: 002b:00000000ffcb0d2c EFLAGS: 00000296 ORIG_RAX: 000000000000000a RAX: ffffffffffffffda RBX: 00000000ffcb0dd0 RCX: 00000000f6f7f383 RDX: 00000000f7005000 RSI: 0000000000000000 RDI: 00000000f6f7f34d RBP: 00000000ffcb0dd0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds.. ---------------- Code disassembly (best guess): 0: 03 74 c0 01 add 0x1(%rax,%rax,8),%esi 4: 10 05 03 74 b8 01 adc %al,0x1b87403(%rip) # 0x1b8740d a: 10 06 adc %al,(%rsi) c: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 10: 10 07 adc %al,(%rdi) 12: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi 16: 10 08 adc %cl,(%rax) 18: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1c: 00 00 add %al,(%rax) 1e: 00 00 add %al,(%rax) 20: 00 51 52 add %dl,0x52(%rcx) 23: 55 push %rbp 24: 89 e5 mov %esp,%ebp 26: 0f 34 sysenter 28: cd 80 int $0x80 * 2a: 5d pop %rbp <-- trapping instruction 2b: 5a pop %rdx 2c: 59 pop %rcx 2d: c3 retq 2e: 90 nop 2f: 90 nop 30: 90 nop 31: 90 nop 32: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1) 39: 00 00 00 3c: 0f .byte 0xf 3d: 1f (bad) 3e: 44 rex.R