------------[ cut here ]------------
WARNING: CPU: 0 PID: 9521 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 9521 Comm: syz.2.1343 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 8d 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 10 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:ffffc90000007d38 EFLAGS: 00010006
RAX: ffffffff819ed900 RBX: 0000000000000008 RCX: ffff888028203b80
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1ff7c19
R10: fffffbfff1ff7c19 R11: 1ffffffff1ff7c18 R12: ffff888028205308
R13: dffffc0000000000 R14: ffffc90000007da8 R15: 0000000000000000
FS:  00007f08909bd6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f08909bcf98 CR3: 00000000647ae000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000200000000300 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_9a85f3c013040bfe+0x5b/0x8b8
 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:on_stack arch/x86/include/asm/stacktrace.h:55 [inline]
RIP: 0010:stack_access_ok arch/x86/kernel/unwind_orc.c:347 [inline]
RIP: 0010:deref_stack_reg arch/x86/kernel/unwind_orc.c:357 [inline]
RIP: 0010:unwind_next_frame+0x904/0x1d90 arch/x86/kernel/unwind_orc.c:539
Code: 0f 85 2c 0f 00 00 41 0f b6 46 01 83 e0 03 ff 24 c5 50 80 08 8a 48 89 54 24 50 48 8d 7b 08 48 89 f8 48 c1 e8 03 42 80 3c 28 00 <74> 05 e8 85 b2 87 00 4c 89 7c 24 60 4c 8b 73 08 48 8d 7b 10 48 89
RSP: 0000:ffffc900035df588 EFLAGS: 00000246
RAX: 1ffff920006bbeca RBX: ffffc900035df648 RCX: ffffffff8d7ec9cc
RDX: 1ffffffff1bdbcb0 RSI: ffffffff8dede54c RDI: ffffc900035df650
RBP: ffffc900035df690 R08: 0000000000000009 R09: 0000000000000002
R10: fffff520006bbed5 R11: 1ffff920006bbed3 R12: 1ffffffff1bdbcb0
R13: dffffc0000000000 R14: ffffffff8dede580 R15: ffffffff8dede581
 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: 0033:0x7f0892614f7e
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:00007f08909bcf70 EFLAGS: 00010202
RAX: 0000000000000000 RBX: 00007f08927dc371 RCX: 00007f08927dd3e3
RDX: 0000000000003cd7 RSI: 0000000000000000 RDI: 00007f08927dc371
RBP: 00007f08929acfa0 R08: 00000000000000ed R09: 002d4aeba898d8f8
R10: 0000007bc005f634 R11: 000000000000b37c R12: 0000000000000001
R13: 00007f08929ad038 R14: 00007f08929acfa0 R15: 00007fff4397a458
 </TASK>
----------------
Code disassembly (best guess):
   0:	0f 85 2c 0f 00 00    	jne    0xf32
   6:	41 0f b6 46 01       	movzbl 0x1(%r14),%eax
   b:	83 e0 03             	and    $0x3,%eax
   e:	ff 24 c5 50 80 08 8a 	jmp    *-0x75f77fb0(,%rax,8)
  15:	48 89 54 24 50       	mov    %rdx,0x50(%rsp)
  1a:	48 8d 7b 08          	lea    0x8(%rbx),%rdi
  1e:	48 89 f8             	mov    %rdi,%rax
  21:	48 c1 e8 03          	shr    $0x3,%rax
  25:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
* 2a:	74 05                	je     0x31 <-- trapping instruction
  2c:	e8 85 b2 87 00       	call   0x87b2b6
  31:	4c 89 7c 24 60       	mov    %r15,0x60(%rsp)
  36:	4c 8b 73 08          	mov    0x8(%rbx),%r14
  3a:	48 8d 7b 10          	lea    0x10(%rbx),%rdi
  3e:	48                   	rex.W
  3f:	89                   	.byte 0x89