------------[ cut here ]------------
WARNING: CPU: 1 PID: 4351 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 4351 Comm: syz.0.55 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 6d 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 f0 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:ffffc90000dd0a08 EFLAGS: 00010246
RAX: ffffffff819ed660 RBX: 0000000000000008 RCX: ffff888079c58000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1ff7a19
R10: fffffbfff1ff7a19 R11: 1ffffffff1ff7a18 R12: ffff888079c59788
R13: 1ffff920001ba150 R14: ffffc90000dd0a68 R15: ffffffffa3000000
FS:  000055555f832500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30d63fff CR3: 000000001e7eb000 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_user kernel/trace/bpf_trace.c:166 [inline]
 bpf_probe_read_user+0x26/0x70 kernel/trace/bpf_trace.c:163
 bpf_prog_b01026b2908340f4+0x3d/0x500
 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:spin_unlock include/linux/spinlock.h:403 [inline]
RIP: 0010:__text_poke+0x646/0x7b0 arch/x86/kernel/alternative.c:1389
Code: 00 00 00 00 00 00 9c 8f 84 24 80 00 00 00 f6 84 24 81 00 00 00 02 75 6f 41 f7 c6 00 02 00 00 74 01 fb 48 8b bc 24 c0 00 00 00 <e8> 25 b8 87 08 48 c7 44 24 60 0e 36 e0 45 48 b8 00 00 00 00 00 fc
RSP: 0018:ffffc900012ff8c0 EFLAGS: 00000206
RAX: 8e87119433c26e00 RBX: 1ffff9200025ff24 RCX: 8e87119433c26e00
RDX: dffffc0000000000 RSI: ffffffff8a0b1820 RDI: ffff888016866060
RBP: ffffc900012ff9f0 R08: dffffc0000000000 R09: fffffbfff1ff7a19
R10: fffffbfff1ff7a19 R11: 1ffffffff1ff7a18 R12: ffff888079c58000
R13: ffff888016867558 R14: 0000000000000282 R15: ffffffff81bb69bd
 text_poke arch/x86/kernel/alternative.c:1413 [inline]
 text_poke_bp_batch+0x138/0x7c0 arch/x86/kernel/alternative.c:1639
 text_poke_flush arch/x86/kernel/alternative.c:1833 [inline]
 text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1840
 arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
 static_key_enable_cpuslocked+0x11f/0x240 kernel/jump_label.c:177
 static_key_enable+0x16/0x20 kernel/jump_label.c:190
 tracepoint_add_func+0x83b/0x9a0 kernel/tracepoint.c:361
 tracepoint_probe_register_prio_may_exist+0x5c/0x90 kernel/tracepoint.c:482
 bpf_raw_tracepoint_open+0x69d/0x780 kernel/bpf/syscall.c:3119
 __sys_bpf+0x48b/0x670 kernel/bpf/syscall.c:4699
 __do_sys_bpf kernel/bpf/syscall.c:4761 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:4759 [inline]
 __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4759
 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: 0033:0x7f0efcd43ec9
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:00007ffdeae06ae8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f0efcf9afa0 RCX: 00007f0efcd43ec9
RDX: 0000000000000018 RSI: 0000200000000200 RDI: 0000000000000011
RBP: 00007f0efcdc6f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0efcf9afa0 R14: 00007f0efcf9afa0 R15: 0000000000000003
 </TASK>
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	00 00                	add    %al,(%rax)
   6:	9c                   	pushf
   7:	8f 84 24 80 00 00 00 	pop    0x80(%rsp)
   e:	f6 84 24 81 00 00 00 	testb  $0x2,0x81(%rsp)
  15:	02
  16:	75 6f                	jne    0x87
  18:	41 f7 c6 00 02 00 00 	test   $0x200,%r14d
  1f:	74 01                	je     0x22
  21:	fb                   	sti
  22:	48 8b bc 24 c0 00 00 	mov    0xc0(%rsp),%rdi
  29:	00
* 2a:	e8 25 b8 87 08       	call   0x887b854 <-- trapping instruction
  2f:	48 c7 44 24 60 0e 36 	movq   $0x45e0360e,0x60(%rsp)
  36:	e0 45
  38:	48                   	rex.W
  39:	b8 00 00 00 00       	mov    $0x0,%eax
  3e:	00 fc                	add    %bh,%ah