------------[ cut here ]------------
WARNING: CPU: 1 PID: 21229 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 21229 Comm: syz.0.6468 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 ed 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 70 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: ffffffff819ed740 RBX: 0000000000000000 RCX: ffff888025f1d940
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed1004be3b29
R10: ffffed1004be3b29 R11: 1ffff11004be3b28 R12: ffff888025f1f0c8
R13: 00007ffffffff000 R14: ffffc90000dd0da8 R15: 0000000000000000
FS:  00007f423e83e6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f52e9de7048 CR3: 0000000060c9f000 CR4: 00000000003506e0
DR0: 0000200000000300 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_f3c4d654356a1293+0x34/0x4b8
 bpf_dispatcher_nop_func include/linux/bpf.h:790 [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:find_stack lib/stackdepot.c:207 [inline]
RIP: 0010:stack_depot_save+0x153/0x440 lib/stackdepot.c:280
Code: c1 c0 04 44 29 c6 31 f1 c1 c6 0e 29 f1 31 cd c1 c1 18 29 cd 4c 8b 2d f4 6b 42 12 41 89 ee 41 81 e6 ff ff 0f 00 4f 8b 7c f5 00 <4d> 85 ff 74 58 89 d9 eb 08 4d 8b 3f 4d 85 ff 74 4c 41 39 6f 08 75
RSP: 0018:ffffc9000346f860 EFLAGS: 00000206
RAX: 0000000000000000 RBX: 0000000000000008 RCX: 0000000029f3178f
RDX: 0000000000000d40 RSI: 0000000095aa6e64 RDI: ffffc9000346f8c0
RBP: 000000006e33ba77 R08: 00000000b315d2f6 R09: 0000000000000001
R10: 000000009f69782b R11: 000000000226b628 R12: ffff888022c3dc20
R13: ffff88823b000000 R14: 000000000003ba77 R15: ffff88805e3cc3a0
 kasan_save_stack mm/kasan/common.c:40 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 ____kasan_kmalloc mm/kasan/common.c:513 [inline]
 __kasan_kmalloc+0xcc/0xf0 mm/kasan/common.c:522
 kmalloc include/linux/slab.h:609 [inline]
 kzalloc include/linux/slab.h:735 [inline]
 tomoyo_encode2 security/tomoyo/realpath.c:45 [inline]
 tomoyo_encode+0x27e/0x540 security/tomoyo/realpath.c:80
 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: 0033:0x7f42405d67eb
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:00007f423e83e050 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f42407fe038 RCX: 00007f42405d67eb
RDX: 0000000000000000 RSI: 0000000000006364 RDI: 00000000000000d8
RBP: 0000000000000000 R08: 00007ffcd6add007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007f42407fe038 R14: 00007ffcd6adcf20 R15: 00007ffcd6add008
 </TASK>
----------------
Code disassembly (best guess):
   0:	c1 c0 04             	rol    $0x4,%eax
   3:	44 29 c6             	sub    %r8d,%esi
   6:	31 f1                	xor    %esi,%ecx
   8:	c1 c6 0e             	rol    $0xe,%esi
   b:	29 f1                	sub    %esi,%ecx
   d:	31 cd                	xor    %ecx,%ebp
   f:	c1 c1 18             	rol    $0x18,%ecx
  12:	29 cd                	sub    %ecx,%ebp
  14:	4c 8b 2d f4 6b 42 12 	mov    0x12426bf4(%rip),%r13        # 0x12426c0f
  1b:	41 89 ee             	mov    %ebp,%r14d
  1e:	41 81 e6 ff ff 0f 00 	and    $0xfffff,%r14d
  25:	4f 8b 7c f5 00       	mov    0x0(%r13,%r14,8),%r15
* 2a:	4d 85 ff             	test   %r15,%r15 <-- trapping instruction
  2d:	74 58                	je     0x87
  2f:	89 d9                	mov    %ebx,%ecx
  31:	eb 08                	jmp    0x3b
  33:	4d 8b 3f             	mov    (%r15),%r15
  36:	4d 85 ff             	test   %r15,%r15
  39:	74 4c                	je     0x87
  3b:	41 39 6f 08          	cmp    %ebp,0x8(%r15)
  3f:	75                   	.byte 0x75