------------[ cut here ]------------
WARNING: CPU: 1 PID: 8391 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 8391 Comm: syz.2.712 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: 0000000000000008 RCX: ffff8880266f5940
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed1004cdeb29
R10: ffffed1004cdeb29 R11: 1ffff11004cdeb28 R12: ffff8880266f70c8
R13: 00007ffffffff000 R14: ffffc90000dd0da8 R15: 0000000020000000
FS:  00007fa76e3b16c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000000 CR3: 000000004f9db000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
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_bcff4640d6a7c5a9+0x5e/0xf80
 bpf_dispatcher_nop_func include/linux/bpf.h:888 [inline]
 __bpf_prog_run include/linux/filter.h:621 [inline]
 bpf_prog_run include/linux/filter.h:635 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline]
 bpf_trace_run2+0x242/0x2d0 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+0x16e/0x610 security/tomoyo/realpath.c:260
Code: 00 00 c6 03 00 4c 89 ed 48 8b 44 24 68 42 80 3c 28 00 4c 8b 6c 24 70 74 08 4c 89 ef e8 db a1 1f fe 4c 89 7c 24 08 4d 8b 6d 00 <4d> 85 ed 74 31 49 83 c5 48 4c 89 e8 48 c1 e8 03 80 3c 28 00 74 08
RSP: 0018:ffffc900033efb50 EFLAGS: 00000246
RAX: 1ffff110039958d7 RBX: ffff88805c6f0fff RCX: 6853bf23f5bd0c00
RDX: 0000000000000c40 RSI: 0000000000000007 RDI: ffffc900033ef920
RBP: dffffc0000000000 R08: ffffffff89c000ca R09: 0000000000000002
R10: 00000000646a2c6a R11: 000000004c703799 R12: 0000000000001000
R13: ffffffff8a470d00 R14: ffff88807e332c90 R15: ffff88805c6f0000
 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: 0033:0x7fa7701497ab
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:00007fa76e3b1050 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fa770391038 RCX: 00007fa7701497ab
RDX: 0000000000000000 RSI: 0000000000006364 RDI: 00000000000000d8
RBP: 0000000000000000 R08: 00007fff1edfc417 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fa770391038 R14: 00007fff1edfc330 R15: 00007fff1edfc418
 </TASK>
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	c6 03 00             	movb   $0x0,(%rbx)
   5:	4c 89 ed             	mov    %r13,%rbp
   8:	48 8b 44 24 68       	mov    0x68(%rsp),%rax
   d:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
  12:	4c 8b 6c 24 70       	mov    0x70(%rsp),%r13
  17:	74 08                	je     0x21
  19:	4c 89 ef             	mov    %r13,%rdi
  1c:	e8 db a1 1f fe       	call   0xfe1fa1fc
  21:	4c 89 7c 24 08       	mov    %r15,0x8(%rsp)
  26:	4d 8b 6d 00          	mov    0x0(%r13),%r13
* 2a:	4d 85 ed             	test   %r13,%r13 <-- trapping instruction
  2d:	74 31                	je     0x60
  2f:	49 83 c5 48          	add    $0x48,%r13
  33:	4c 89 e8             	mov    %r13,%rax
  36:	48 c1 e8 03          	shr    $0x3,%rax
  3a:	80 3c 28 00          	cmpb   $0x0,(%rax,%rbp,1)
  3e:	74 08                	je     0x48