------------[ cut here ]------------
WARNING: CPU: 1 PID: 6164 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 6164 Comm: syz.0.377 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:ffffc90000dd0710 EFLAGS: 00010246
RAX: ffffffff819ed760 RBX: 0000000000000000 RCX: ffff88807c633b80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed100f8c6771
R10: ffffed100f8c6771 R11: 1ffff1100f8c6770 R12: ffff88807c635308
R13: 00007ffffffff000 R14: ffffc90000dd0748 R15: 0000000020000000
FS:  00007ff32a9476c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000001 CR3: 0000000054ccf000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
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_8fc34fd13f997abc+0x3d/0x710
 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_run4+0x188/0x330 kernel/trace/bpf_trace.c:1917
 __bpf_trace_mm_page_alloc+0xbf/0xf0 include/trace/events/kmem.h:201
 trace_mm_page_alloc include/trace/events/kmem.h:201 [inline]
 __alloc_pages+0x449/0x470 mm/page_alloc.c:5509
 skb_page_frag_refill+0x225/0x4c0 net/core/sock.c:2662
 add_recvbuf_mergeable drivers/net/virtio_net.c:1361 [inline]
 try_fill_recv+0x47a/0x1740 drivers/net/virtio_net.c:1402
 virtnet_receive drivers/net/virtio_net.c:1516 [inline]
 virtnet_poll+0x6a9/0xef0 drivers/net/virtio_net.c:1617
 __napi_poll+0xc0/0x430 net/core/dev.c:7075
 napi_poll net/core/dev.c:7142 [inline]
 net_rx_action+0x4a8/0x9c0 net/core/dev.c:7232
 handle_softirqs+0x328/0x820 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 common_interrupt+0xb5/0xd0 arch/x86/kernel/irq.c:242
 </IRQ>
 <TASK>
 asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:667
RIP: 0010:handle_pte_fault mm/memory.c:4599 [inline]
RIP: 0010:__handle_mm_fault mm/memory.c:4785 [inline]
RIP: 0010:handle_mm_fault+0xee5/0x43c0 mm/memory.c:4883
Code: c7 31 ff e8 bd 4f cb ff 41 08 df 0f 85 ce 00 00 00 e8 cf 4b cb ff 4c 8b b4 24 e8 00 00 00 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 <74> 08 4c 89 f7 e8 c1 b3 0f 00 4d 8b 3e 4c 89 fe 48 83 e6 9f 31 ff
RSP: 0018:ffffc9000327f8e0 EFLAGS: 00000246
RAX: 1ffff1100a99d202 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc90004291000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc9000327fa90 R08: dffffc0000000000 R09: ffffc9000327f9c4
R10: fffff5200064ff41 R11: 1ffff9200064ff38 R12: 0000000054ce9001
R13: dffffc0000000000 R14: ffff888054ce9010 R15: 0000000000000000
 faultin_page mm/gup.c:976 [inline]
 __get_user_pages+0x93e/0x11c0 mm/gup.c:1197
 populate_vma_page_range+0x213/0x290 mm/gup.c:1529
 __mm_populate+0x26f/0x3a0 mm/gup.c:1638
 mm_populate include/linux/mm.h:2646 [inline]
 vm_mmap_pgoff+0x203/0x2b0 mm/util.c:556
 ksys_mmap_pgoff+0x140/0x780 mm/mmap.c:1635
 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: 0033:0x7ff32c6dfec9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff32a947038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007ff32c936fa0 RCX: 00007ff32c6dfec9
RDX: b635773f06ebbeef RSI: 0000000000b36000 RDI: 0000200000000000
RBP: 00007ff32c762f91 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff32c937038 R14: 00007ff32c936fa0 R15: 00007fff3496dcc8
 </TASK>
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	31 ff                	xor    %edi,%edi
   2:	e8 bd 4f cb ff       	call   0xffcb4fc4
   7:	41 08 df             	or     %bl,%r15b
   a:	0f 85 ce 00 00 00    	jne    0xde
  10:	e8 cf 4b cb ff       	call   0xffcb4be4
  15:	4c 8b b4 24 e8 00 00 	mov    0xe8(%rsp),%r14
  1c:	00
  1d:	4c 89 f0             	mov    %r14,%rax
  20:	48 c1 e8 03          	shr    $0x3,%rax
  24:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
* 29:	74 08                	je     0x33 <-- trapping instruction
  2b:	4c 89 f7             	mov    %r14,%rdi
  2e:	e8 c1 b3 0f 00       	call   0xfb3f4
  33:	4d 8b 3e             	mov    (%r14),%r15
  36:	4c 89 fe             	mov    %r15,%rsi
  39:	48 83 e6 9f          	and    $0xffffffffffffff9f,%rsi
  3d:	31 ff                	xor    %edi,%edi