------------[ cut here ]------------
WARNING: CPU: 1 PID: 4342 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 4342 Comm: syz.3.15 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 ed 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 70 f4 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:ffffc90000dd09f0 EFLAGS: 00010246
RAX: ffffffff819ecfb0 RBX: 0000000000000000 RCX: ffff88801ef81dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed1003df03b9
R10: ffffed1003df03b9 R11: 1ffff11003df03b8 R12: ffff88801ef83548
R13: 00007ffffffff000 R14: ffffc90000dd0a28 R15: 0000000020000000
FS:  00007f5981c036c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007faa2e9c86c0 CR3: 0000000079357000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000602
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/0xed0
 bpf_dispatcher_nop_func include/linux/bpf.h:790 [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
 __bpf_trace_kfree+0x6e/0x90 include/trace/events/kmem.h:118
 trace_kfree include/trace/events/kmem.h:118 [inline]
 kfree+0x25f/0x2a0 mm/slub.c:4549
 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:__should_failslab+0x25/0xe0 mm/failslab.c:20
Code: 5f c3 00 00 cc 55 41 57 41 56 53 89 f5 48 89 fb 49 bf 00 00 00 00 00 fc ff df 48 c7 c0 e8 0d 11 96 48 c1 e8 03 42 80 3c 38 00 <74> 0c 48 c7 c7 e8 0d 11 96 e8 9d ef ff ff 66 85 ed 78 1a 48 3b 1d
RSP: 0018:ffffc9000303f9b8 EFLAGS: 00000246
RAX: 1ffffffff2c221bd RBX: ffff888140007640 RCX: b337c23509fde600
RDX: ffff88801ef81dc0 RSI: 0000000000000dc0 RDI: ffff888140007640
RBP: 0000000000000dc0 R08: dffffc0000000000 R09: fffffbfff1ad2dd6
R10: fffffbfff1ad2dd6 R11: 1ffffffff1ad2dd5 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff888140007640 R15: dffffc0000000000
 should_failslab+0x5/0x20 mm/slab_common.c:1350
 slab_pre_alloc_hook+0x51/0xc0 mm/slab.h:494
 slab_alloc_node mm/slub.c:3134 [inline]
 slab_alloc mm/slub.c:3228 [inline]
 kmem_cache_alloc+0x3d/0x290 mm/slub.c:3233
 kmem_cache_zalloc include/linux/slab.h:725 [inline]
 copy_signal+0x50/0x640 kernel/fork.c:1654
 copy_process+0x1761/0x3e00 kernel/fork.c:2287
 kernel_clone+0x219/0x930 kernel/fork.c:2679
 __do_sys_clone kernel/fork.c:2796 [inline]
 __se_sys_clone kernel/fork.c:2780 [inline]
 __x64_sys_clone+0x170/0x1c0 kernel/fork.c:2780
 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: 0033:0x7f598399bbe9
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:00007f5981c02fe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f5983bc2fa0 RCX: 00007f598399bbe9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000640c7000
RBP: 00007f5983a1ee19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f5983bc3038 R14: 00007f5983bc2fa0 R15: 00007fffd75d3958
 </TASK>
----------------
Code disassembly (best guess):
   0:	5f                   	pop    %rdi
   1:	c3                   	ret
   2:	00 00                	add    %al,(%rax)
   4:	cc                   	int3
   5:	55                   	push   %rbp
   6:	41 57                	push   %r15
   8:	41 56                	push   %r14
   a:	53                   	push   %rbx
   b:	89 f5                	mov    %esi,%ebp
   d:	48 89 fb             	mov    %rdi,%rbx
  10:	49 bf 00 00 00 00 00 	movabs $0xdffffc0000000000,%r15
  17:	fc ff df
  1a:	48 c7 c0 e8 0d 11 96 	mov    $0xffffffff96110de8,%rax
  21:	48 c1 e8 03          	shr    $0x3,%rax
  25:	42 80 3c 38 00       	cmpb   $0x0,(%rax,%r15,1)
* 2a:	74 0c                	je     0x38 <-- trapping instruction
  2c:	48 c7 c7 e8 0d 11 96 	mov    $0xffffffff96110de8,%rdi
  33:	e8 9d ef ff ff       	call   0xffffefd5
  38:	66 85 ed             	test   %bp,%bp
  3b:	78 1a                	js     0x57
  3d:	48                   	rex.W
  3e:	3b                   	.byte 0x3b
  3f:	1d                   	.byte 0x1d