------------[ cut here ]------------
WARNING: CPU: 1 PID: 4765 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 4765 Comm: syz.0.142 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 8d f6 d8 ff 85 db 48 c7 c0 f2 ff ff ff 49 0f 44 c6 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 10 f3 d8 ff <0f> 0b e9 1c ff ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c ea fe
RSP: 0018:ffffc90000dd0d40 EFLAGS: 00010006
RAX: ffffffff819ed900 RBX: 0000000000000000 RCX: ffff888020bcbb80
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1ff7c19
R10: fffffbfff1ff7c19 R11: 1ffffffff1ff7c18 R12: ffff888020bcd308
R13: dffffc0000000000 R14: ffffc90000dd0da8 R15: 0000000000000000
FS:  00007f0217e316c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555591049808 CR3: 000000005a4ae000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
 ____bpf_probe_read_user kernel/trace/bpf_trace.c:166 [inline]
 bpf_probe_read_user+0x26/0x70 kernel/trace/bpf_trace.c:163
 bpf_prog_8848bede53a6b60e+0x34/0x1bc
 bpf_dispatcher_nop_func include/linux/bpf.h:888 [inline]
 __bpf_prog_run include/linux/filter.h:628 [inline]
 bpf_prog_run include/linux/filter.h:635 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline]
 bpf_trace_run2+0x15b/0x2d0 kernel/trace/bpf_trace.c:1915
 trace_tlb_flush+0xe6/0x110 include/trace/events/tlb.h:38
 flush_tlb_func+0x43f/0x510 arch/x86/mm/tlb.c:855
 flush_smp_call_function_queue+0x2a9/0x760 kernel/smp.c:628
 __sysvec_call_function_single+0x98/0x240 arch/x86/kernel/smp.c:248
 instr_sysvec_call_function_single arch/x86/kernel/smp.c:243 [inline]
 sysvec_call_function_single+0x98/0xc0 arch/x86/kernel/smp.c:243
 </IRQ>
 <TASK>
 asm_sysvec_call_function_single+0x16/0x20 arch/x86/include/asm/idtentry.h:684
RIP: 0010:tomoyo_realpath_from_path+0x283/0x610 security/tomoyo/realpath.c:271
Code: 48 8b 44 24 38 80 3c 28 00 4c 8b 74 24 40 74 08 4c 89 f7 e8 3f 92 1f fe 4d 8b 2e 49 83 c5 08 4c 89 e8 48 c1 e8 03 0f b6 04 28 <84> c0 0f 85 6e 02 00 00 45 8b 75 00 44 89 f6 83 e6 01 31 ff e8 54
RSP: 0018:ffffc90002e9fb50 EFLAGS: 00000a06
RAX: 0000000000000000 RBX: ffff88801ba10fff RCX: ffff888020bcbb80
RDX: 0000000000000000 RSI: 0000000000000007 RDI: ffffc90002e9f920
RBP: dffffc0000000000 R08: ffffffff89c000ca R09: 0000000000000002
R10: 000000004a35f35a R11: 00000000a09104ac R12: 0000000000001000
R13: ffffffff8c56a9c8 R14: ffff888144592028 R15: ffff88801ba10000
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_path_number_perm+0x1d5/0x5d0 security/tomoyo/file.c:723
 security_file_ioctl+0x6c/0xa0 security/security.c:1555
 __do_sys_ioctl fs/ioctl.c:868 [inline]
 __se_sys_ioctl+0x48/0x170 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f0219bca34b
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007f0217e31050 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f0219e21038 RCX: 00007f0219bca34b
RDX: 0000000000000000 RSI: 0000000000006364 RDI: 00000000000000d8
RBP: 0000000000000000 R08: 00007fffc0e205c7 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007f0219e21038 R14: 00007fffc0e204e0 R15: 00007fffc0e205c8
 </TASK>
----------------
Code disassembly (best guess):
   0:	48 8b 44 24 38       	mov    0x38(%rsp),%rax
   5:	80 3c 28 00          	cmpb   $0x0,(%rax,%rbp,1)
   9:	4c 8b 74 24 40       	mov    0x40(%rsp),%r14
   e:	74 08                	je     0x18
  10:	4c 89 f7             	mov    %r14,%rdi
  13:	e8 3f 92 1f fe       	call   0xfe1f9257
  18:	4d 8b 2e             	mov    (%r14),%r13
  1b:	49 83 c5 08          	add    $0x8,%r13
  1f:	4c 89 e8             	mov    %r13,%rax
  22:	48 c1 e8 03          	shr    $0x3,%rax
  26:	0f b6 04 28          	movzbl (%rax,%rbp,1),%eax
* 2a:	84 c0                	test   %al,%al <-- trapping instruction
  2c:	0f 85 6e 02 00 00    	jne    0x2a0
  32:	45 8b 75 00          	mov    0x0(%r13),%r14d
  36:	44 89 f6             	mov    %r14d,%esi
  39:	83 e6 01             	and    $0x1,%esi
  3c:	31 ff                	xor    %edi,%edi
  3e:	e8                   	.byte 0xe8
  3f:	54                   	push   %rsp