------------[ cut here ]------------
WARNING: CPU: 1 PID: 10755 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 10755 Comm: syz.2.953 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 3d f7 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 c0 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:ffffc90000dd0d30 EFLAGS: 00010006
RAX: ffffffff819ed760 RBX: 0000000000000000 RCX: ffff88802c018000
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed1005803001
R10: ffffed1005803001 R11: 1ffff11005803000 R12: ffff88802c019788
R13: 00007ffffffff000 R14: ffffc90000dd0da8 R15: 0000000000000000
FS:  00007f29832b26c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f80b753c2a0 CR3: 000000005b746000 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_compat kernel/trace/bpf_trace.c:281 [inline]
 bpf_probe_read_compat+0xdd/0x170 kernel/trace/bpf_trace.c:277
 bpf_prog_f3c4d654356a1293+0x34/0x96c
 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_encode2 security/tomoyo/realpath.c:-1 [inline]
RIP: 0010:tomoyo_encode+0x10a/0x540 security/tomoyo/realpath.c:80
Code: ee e8 ea 41 db fd 8d 45 df 44 0f b6 e0 bf 5e 00 00 00 44 89 e6 e8 d6 41 db fd 31 c0 41 80 fc 5e 0f 93 c0 83 fd 5c 8d 6c 40 01 <b8> 02 00 00 00 0f 44 e8 49 8d 7d 01 48 89 f8 48 c1 e8 03 48 b9 00
RSP: 0018:ffffc90002dbfaf8 EFLAGS: 00000212
RAX: 0000000000000000 RBX: ffff88802485aff0 RCX: ffff88802c018000
RDX: 0000000000000000 RSI: 0000000000000046 RDI: 000000000000005e
RBP: 0000000000000001 R08: dffffc0000000000 R09: ffffed100490b5ff
R10: 0000000073666775 R11: 0000000075626564 R12: 0000000000000046
R13: ffff88802485aff4 R14: 0000000000000004 R15: 0000000000000006
 tomoyo_realpath_from_path+0x5cd/0x610 security/tomoyo/realpath.c:288
 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: 0033:0x7f298504a7ab
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:00007f29832b2050 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f2985292038 RCX: 00007f298504a7ab
RDX: 0000000000000000 RSI: 0000000000006364 RDI: 00000000000000d8
RBP: 0000000000000000 R08: 00007ffe33bb4bd7 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007f2985292038 R14: 00007ffe33bb4af0 R15: 00007ffe33bb4bd8
 </TASK>
----------------
Code disassembly (best guess):
   0:	ee                   	out    %al,(%dx)
   1:	e8 ea 41 db fd       	call   0xfddb41f0
   6:	8d 45 df             	lea    -0x21(%rbp),%eax
   9:	44 0f b6 e0          	movzbl %al,%r12d
   d:	bf 5e 00 00 00       	mov    $0x5e,%edi
  12:	44 89 e6             	mov    %r12d,%esi
  15:	e8 d6 41 db fd       	call   0xfddb41f0
  1a:	31 c0                	xor    %eax,%eax
  1c:	41 80 fc 5e          	cmp    $0x5e,%r12b
  20:	0f 93 c0             	setae  %al
  23:	83 fd 5c             	cmp    $0x5c,%ebp
  26:	8d 6c 40 01          	lea    0x1(%rax,%rax,2),%ebp
* 2a:	b8 02 00 00 00       	mov    $0x2,%eax <-- trapping instruction
  2f:	0f 44 e8             	cmove  %eax,%ebp
  32:	49 8d 7d 01          	lea    0x1(%r13),%rdi
  36:	48 89 f8             	mov    %rdi,%rax
  39:	48 c1 e8 03          	shr    $0x3,%rax
  3d:	48                   	rex.W
  3e:	b9                   	.byte 0xb9