------------[ cut here ]------------
WARNING: CPU: 1 PID: 11595 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 11595 Comm: syz.1.2460 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 ad 89 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 30 86 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:fffffe000005d958 EFLAGS: 00010006
RAX: ffffffff81a08e70 RBX: 0000000000000008 RCX: ffff888077e81dc0
RDX: 0000000000110000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff888077e81dc7 R09: 1ffff1100efd03b8
R10: dffffc0000000000 R11: ffffed100efd03b9 R12: ffff888077e83568
R13: 00007ffffffff000 R14: fffffe000005d9c8 R15: 0000000000000000
FS:  00007f302da6a6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2e4443 CR3: 000000005fdec000 CR4: 00000000003506e0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <#DB>
 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_e31a0068e84a1a8d+0x3d/0x3e4
 bpf_dispatcher_nop_func include/linux/bpf.h:890 [inline]
 __bpf_prog_run include/linux/filter.h:628 [inline]
 bpf_prog_run include/linux/filter.h:635 [inline]
 bpf_overflow_handler+0x1c2/0x4a0 kernel/events/core.c:10307
 __perf_event_overflow+0x35f/0x550 kernel/events/core.c:9525
 perf_bp_event+0x276/0x320 kernel/events/core.c:10494
 hw_breakpoint_handler arch/x86/kernel/hw_breakpoint.c:555 [inline]
 hw_breakpoint_exceptions_notify+0x14d/0x470 arch/x86/kernel/hw_breakpoint.c:586
 notifier_call_chain kernel/notifier.c:83 [inline]
 atomic_notifier_call_chain+0x15d/0x280 kernel/notifier.c:198
 notify_die+0x141/0x1a0 kernel/notifier.c:529
 notify_debug+0x20/0x30 arch/x86/kernel/traps.c:872
 exc_debug_kernel arch/x86/kernel/traps.c:929 [inline]
 exc_debug+0xcf/0x130 arch/x86/kernel/traps.c:1029
 asm_exc_debug+0x1a/0x40 arch/x86/include/asm/idtentry.h:642
RIP: 0010:__put_user_nocheck_4+0x5/0x11
Code: 48 39 d9 73 54 0f 01 cb 66 89 01 31 c9 0f 01 ca c3 90 90 90 90 90 48 bb fd ef ff ff ff 7f 00 00 48 39 d9 73 34 0f 01 cb 89 01 <31> c9 0f 01 ca c3 90 90 90 90 90 90 48 bb f9 ef ff ff ff 7f 00 00
RSP: 0018:ffffc90002f2fe80 EFLAGS: 00040297
RAX: 000000000000000b RBX: 00007fffffffeffd RCX: 0000200000000300
RDX: 0000000000000000 RSI: ffffffff8a2b3e80 RDI: ffffffff8a7a48c0
RBP: 000000000000000b R08: ffffffff8d8b1eef R09: 1ffffffff1b163dd
R10: dffffc0000000000 R11: fffffbfff1b163de R12: 0000000000000000
R13: 0000200000000300 R14: 000000000000001e R15: 0000000000000002
 </#DB>
 <TASK>
 __sys_socketpair+0xb4/0x540 net/socket.c:1639
 __do_sys_socketpair net/socket.c:1705 [inline]
 __se_sys_socketpair net/socket.c:1702 [inline]
 __x64_sys_socketpair+0x97/0xb0 net/socket.c:1702
 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: 0033:0x7f302f812159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f302da6a028 EFLAGS: 00000246 ORIG_RAX: 0000000000000035
RAX: ffffffffffffffda RBX: 00007f302fa99fa0 RCX: 00007f302f812159
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 000000000000001e
RBP: 00007f302f8a906b R08: 0000000000000000 R09: 0000000000000000
R10: 0000200000000300 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f302fa9a038 R14: 00007f302fa99fa0 R15: 00007ffeb3b349a8
 </TASK>
----------------
Code disassembly (best guess):
   0:	48 39 d9             	cmp    %rbx,%rcx
   3:	73 54                	jae    0x59
   5:	0f 01 cb             	stac
   8:	66 89 01             	mov    %ax,(%rcx)
   b:	31 c9                	xor    %ecx,%ecx
   d:	0f 01 ca             	clac
  10:	c3                   	ret
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	48 bb fd ef ff ff ff 	movabs $0x7fffffffeffd,%rbx
  1d:	7f 00 00
  20:	48 39 d9             	cmp    %rbx,%rcx
  23:	73 34                	jae    0x59
  25:	0f 01 cb             	stac
  28:	89 01                	mov    %eax,(%rcx)
* 2a:	31 c9                	xor    %ecx,%ecx <-- trapping instruction
  2c:	0f 01 ca             	clac
  2f:	c3                   	ret
  30:	90                   	nop
  31:	90                   	nop
  32:	90                   	nop
  33:	90                   	nop
  34:	90                   	nop
  35:	90                   	nop
  36:	48 bb f9 ef ff ff ff 	movabs $0x7fffffffeff9,%rbx
  3d:	7f 00 00