------------[ cut here ]------------
WARNING: CPU: 1 PID: 6836 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 6836 Comm: syz.6.647 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: 0000:ffffc90000dd0d40 EFLAGS: 00010006
RAX: ffffffff819ed760 RBX: 0000000000000000 RCX: ffff88802b859dc0
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1ff7819
R10: fffffbfff1ff7819 R11: 1ffffffff1ff7818 R12: ffff88802b85b548
R13: dffffc0000000000 R14: ffffc90000dd0da8 R15: 0000000000000000
FS:  00007ff35da1c6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff35da1bf98 CR3: 0000000062982000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
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+0x34/0xe38
 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:unwind_next_frame+0x11d/0x1d90 arch/x86/kernel/unwind_orc.c:448
Code: 00 74 08 4c 89 f7 e8 d2 b9 87 00 41 f6 06 03 0f 85 36 14 00 00 4c 8d 73 35 4c 89 f0 48 c1 e8 03 49 bd 00 00 00 00 00 fc ff df <48> 89 44 24 68 42 0f b6 04 28 84 c0 0f 85 3f 16 00 00 4c 89 74 24
RSP: 0000:ffffc90002ebf408 EFLAGS: 00000a07
RAX: 1ffff920005d7e9f RBX: ffffc90002ebf4c8 RCX: ffffffff960c2f00
RDX: dffffc0000000000 RSI: ffffffff81acf965 RDI: ffffffff8134790c
RBP: ffffc90002ebf510 R08: ffffc90002ebf590 R09: 0000000000000003
R10: fffff520005d7ea5 R11: 1ffff920005d7ea3 R12: ffffffff81acf965
R13: dffffc0000000000 R14: ffffc90002ebf4fd R15: ffffc90002ebf518
 arch_stack_walk+0x10c/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x98/0xe0 kernel/stacktrace.c:122
 save_stack+0xf3/0x1e0 mm/page_owner.c:119
 __set_page_owner+0x41/0x2d0 mm/page_owner.c:181
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x1b77/0x1c60 mm/page_alloc.c:4192
 __alloc_pages+0x1e1/0x470 mm/page_alloc.c:5487
 alloc_pages_vma+0x393/0x7c0 mm/mempolicy.c:2146
 wp_page_copy+0x235/0x1fd0 mm/memory.c:3056
 handle_pte_fault mm/memory.c:4668 [inline]
 __handle_mm_fault mm/memory.c:4785 [inline]
 handle_mm_fault+0x1eca/0x43c0 mm/memory.c:4883
 do_user_addr_fault+0x489/0xc80 arch/x86/mm/fault.c:1357
 handle_page_fault arch/x86/mm/fault.c:1445 [inline]
 exc_page_fault+0x60/0x100 arch/x86/mm/fault.c:1501
 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:606
RIP: 0033:0x7ff35f6741ee
Code: f6 31 c0 e8 74 f2 13 00 48 81 c4 90 00 00 00 48 98 5b c3 66 0f 1f 84 00 00 00 00 00 41 54 55 53 48 89 fb 48 81 ec d0 00 00 00 <48> 89 74 24 28 48 89 54 24 30 48 89 4c 24 38 4c 89 44 24 40 4c 89
RSP: 002b:00007ff35da1bf70 EFLAGS: 00010202
RAX: 0000000000000000 RBX: 00007ff35f83917e RCX: 00007ff35f81e958
RDX: 0000000000011bc7 RSI: 0000000000000000 RDI: 00007ff35f83917e
RBP: 00007ff35f81e958 R08: 0000000000000000 R09: 00398ed36c048594
R10: 0000005db74f687d R11: 0000000000008452 R12: 0000000000000000
R13: 00007ff35f9fc038 R14: 00007ff35f9fbfa0 R15: 00007ffd1bda76c8
 </TASK>
----------------
Code disassembly (best guess):
   0:	00 74 08 4c          	add    %dh,0x4c(%rax,%rcx,1)
   4:	89 f7                	mov    %esi,%edi
   6:	e8 d2 b9 87 00       	call   0x87b9dd
   b:	41 f6 06 03          	testb  $0x3,(%r14)
   f:	0f 85 36 14 00 00    	jne    0x144b
  15:	4c 8d 73 35          	lea    0x35(%rbx),%r14
  19:	4c 89 f0             	mov    %r14,%rax
  1c:	48 c1 e8 03          	shr    $0x3,%rax
  20:	49 bd 00 00 00 00 00 	movabs $0xdffffc0000000000,%r13
  27:	fc ff df
* 2a:	48 89 44 24 68       	mov    %rax,0x68(%rsp) <-- trapping instruction
  2f:	42 0f b6 04 28       	movzbl (%rax,%r13,1),%eax
  34:	84 c0                	test   %al,%al
  36:	0f 85 3f 16 00 00    	jne    0x167b
  3c:	4c                   	rex.WR
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64