------------[ cut here ]------------
WARNING: CPU: 1 PID: 4431 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 4431 Comm: syz.2.52 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:ffffc90000dd09f8 EFLAGS: 00010246
RAX: ffffffff819ed760 RBX: 0000000000000008 RCX: ffff88807e6e8000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed100fcdd001
R10: ffffed100fcdd001 R11: 1ffff1100fcdd000 R12: ffff88807e6e9788
R13: 00007ffffffff000 R14: ffffc90000dd0a68 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000042c0 CR3: 00000000638d1000 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_ea44d77e194c9431+0x35/0xbd0
 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_run3+0x17e/0x320 kernel/trace/bpf_trace.c:1916
 __bpf_trace_kmem_cache_free+0x99/0xc0 include/trace/events/kmem.h:138
 trace_kmem_cache_free include/trace/events/kmem.h:138 [inline]
 kmem_cache_free+0x1e7/0x210 mm/slub.c:3521
 rcu_do_batch kernel/rcu/tree.c:2523 [inline]
 rcu_core+0x962/0x15d0 kernel/rcu/tree.c:2763
 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
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:mm_counter include/linux/mm.h:-1 [inline]
RIP: 0010:zap_pte_range mm/memory.c:1383 [inline]
RIP: 0010:zap_pmd_range mm/memory.c:1505 [inline]
RIP: 0010:zap_pud_range mm/memory.c:1534 [inline]
RIP: 0010:zap_p4d_range mm/memory.c:1555 [inline]
RIP: 0010:unmap_page_range+0xe8f/0x2520 mm/memory.c:1576
Code: 80 3c 08 00 74 08 4c 89 e7 e8 bd 81 10 00 49 8b 1c 24 48 89 de 48 83 e6 01 31 ff e8 7b 1d cc ff 48 83 e3 01 0f 85 08 01 00 00 <49> be 00 00 00 00 00 fc ff df 48 8b 44 24 20 42 80 3c 30 00 74 08
RSP: 0018:ffffc900038ef560 EFLAGS: 00000246
RAX: ffffffff81abb185 RBX: 0000000000000000 RCX: ffff88807e6e8000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900038ef6d0 R08: dffffc0000000000 R09: ffffed100fcdd001
R10: ffffed100fcdd001 R11: 1ffff1100fcdd000 R12: ffffea000192d018
R13: ffffea000192d008 R14: 00007f637ca0e000 R15: ffffea000192d000
 unmap_vmas+0x11b/0x230 mm/memory.c:1653
 exit_mmap+0x38f/0x5f0 mm/mmap.c:3216
 __mmput+0x115/0x3b0 kernel/fork.c:1127
 exit_mm+0x567/0x6c0 kernel/exit.c:550
 do_exit+0x5a1/0x20a0 kernel/exit.c:870
 do_group_exit+0x12e/0x300 kernel/exit.c:997
 get_signal+0x6ca/0x12c0 kernel/signal.c:2900
 arch_do_signal_or_restart+0xc1/0x1300 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0x9e/0x130 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f637d9f9ec9
Code: Unable to access opcode bytes at RIP 0x7f637d9f9e9f.
RSP: 002b:00007f637bc610e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f637dc50fa8 RCX: 00007f637d9f9ec9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f637dc50fa8
RBP: 00007f637dc50fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f637dc51038 R14: 00007fffe205d590 R15: 00007fffe205d678
 </TASK>
----------------
Code disassembly (best guess):
   0:	80 3c 08 00          	cmpb   $0x0,(%rax,%rcx,1)
   4:	74 08                	je     0xe
   6:	4c 89 e7             	mov    %r12,%rdi
   9:	e8 bd 81 10 00       	call   0x1081cb
   e:	49 8b 1c 24          	mov    (%r12),%rbx
  12:	48 89 de             	mov    %rbx,%rsi
  15:	48 83 e6 01          	and    $0x1,%rsi
  19:	31 ff                	xor    %edi,%edi
  1b:	e8 7b 1d cc ff       	call   0xffcc1d9b
  20:	48 83 e3 01          	and    $0x1,%rbx
  24:	0f 85 08 01 00 00    	jne    0x132
* 2a:	49 be 00 00 00 00 00 	movabs $0xdffffc0000000000,%r14 <-- trapping instruction
  31:	fc ff df
  34:	48 8b 44 24 20       	mov    0x20(%rsp),%rax
  39:	42 80 3c 30 00       	cmpb   $0x0,(%rax,%r14,1)
  3e:	74 08                	je     0x48