------------[ cut here ]------------
WARNING: CPU: 0 PID: 1885 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 1885 Comm: syz.1.2343 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 0d 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 90 f2 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:ffffc90000007d40 EFLAGS: 00010006
RAX: ffffffff819ed980 RBX: 0000000000000000 RCX: ffff88804f580000
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1ff5419
R10: fffffbfff1ff5419 R11: 1ffffffff1ff5418 R12: ffff88804f581788
R13: dffffc0000000000 R14: ffffc90000007da8 R15: 0000000000000000
FS:  00007fc8ca8da6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc8ca8d9f98 CR3: 000000007efb2000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff1 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+0x34/0x494
 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+0xa41/0x1d90 arch/x86/kernel/unwind_orc.c:549
Code: 68 42 0f b6 04 28 84 c0 4c 8b 74 24 28 0f 85 40 10 00 00 41 c6 07 00 ba 10 00 00 00 4c 89 f7 31 f6 e8 83 b3 87 00 48 8b 3c 24 <e9> ec 04 00 00 48 89 54 24 50 48 8d 7b 08 48 89 f8 48 c1 e8 03 42
RSP: 0000:ffffc900034ff588 EFLAGS: 00000202
RAX: ffffc900034ff698 RBX: ffffc900034ff648 RCX: 0000000000000000
RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffffffff8dedec70
RBP: ffffc900034ff690 R08: dffffc0000000000 R09: ffffc900034ff698
R10: fffff5200069fed5 R11: 1ffff9200069fed3 R12: 1ffffffff1bdbd8e
R13: dffffc0000000000 R14: ffffc900034ff698 R15: ffffc900034ff67d
 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
 do_anonymous_page mm/memory.c:3838 [inline]
 handle_pte_fault mm/memory.c:4648 [inline]
 __handle_mm_fault mm/memory.c:4785 [inline]
 handle_mm_fault+0x237f/0x43b0 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: 0033:0x7fc8cc531f7e
Code: f6 31 c0 e8 64 ff 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:00007fc8ca8d9f70 EFLAGS: 00010202
RAX: 0000000000000000 RBX: 00007fc8cc6f9371 RCX: 00007fc8cc7091cb
RDX: 0000000000046a47 RSI: 0000000000000000 RDI: 00007fc8cc6f9371
RBP: 00007fc8cc8c9fa0 R08: 0000000000000155 R09: 001fac9b88ee6c0f
R10: 000000b0f37c2071 R11: 000000000000fe30 R12: 0000000000000001
R13: 00007fc8cc8ca038 R14: 00007fc8cc8c9fa0 R15: 00007fffb55b52c8
 </TASK>
----------------
Code disassembly (best guess):
   0:	68 42 0f b6 04       	push   $0x4b60f42
   5:	28 84 c0 4c 8b 74 24 	sub    %al,0x24748b4c(%rax,%rax,8)
   c:	28 0f                	sub    %cl,(%rdi)
   e:	85 40 10             	test   %eax,0x10(%rax)
  11:	00 00                	add    %al,(%rax)
  13:	41 c6 07 00          	movb   $0x0,(%r15)
  17:	ba 10 00 00 00       	mov    $0x10,%edx
  1c:	4c 89 f7             	mov    %r14,%rdi
  1f:	31 f6                	xor    %esi,%esi
  21:	e8 83 b3 87 00       	call   0x87b3a9
  26:	48 8b 3c 24          	mov    (%rsp),%rdi
* 2a:	e9 ec 04 00 00       	jmp    0x51b <-- trapping instruction
  2f:	48 89 54 24 50       	mov    %rdx,0x50(%rsp)
  34:	48 8d 7b 08          	lea    0x8(%rbx),%rdi
  38:	48 89 f8             	mov    %rdi,%rax
  3b:	48 c1 e8 03          	shr    $0x3,%rax
  3f:	42                   	rex.X