------------[ cut here ]------------
WARNING: CPU: 1 PID: 4009 at mm/maccess.c:226 copy_from_user_nofault+0x15c/0x1c0
Modules linked in:
CPU: 1 PID: 4009 Comm: syz-executor.4 Not tainted 5.15.156-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:copy_from_user_nofault+0x15c/0x1c0 mm/maccess.c:226
Code: db 48 c7 c0 f2 ff ff ff 48 0f 44 c5 eb 0c e8 db d7 d5 ff 48 c7 c0 f2 ff ff ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 c4 d7 d5 ff <0f> 0b e9 1e ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c ef fe ff
RSP: 0018:ffffc90000dd09c0 EFLAGS: 00010246
RAX: ffffffff81aa851c RBX: 0000000000000000 RCX: ffff88801f08d940
RDX: 0000000080000101 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff81aa842d R09: fffffbfff1f7ec19
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: ffffc90000dd0a28
FS:  00007fd0c858b6c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f523000 CR3: 000000002057f000 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_956a5bcb07a162c5+0x34/0x758
 bpf_dispatcher_nop_func include/linux/bpf.h:785 [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:1880 [inline]
 bpf_trace_run3+0x1d1/0x380 kernel/trace/bpf_trace.c:1918
 __bpf_trace_kmem_cache_free+0x99/0xc0 include/trace/events/kmem.h:138
 __traceiter_kmem_cache_free+0x2e/0x50 include/trace/events/kmem.h:138
 trace_kmem_cache_free include/trace/events/kmem.h:138 [inline]
 kmem_cache_free+0x1ce/0x1f0 mm/slub.c:3516
 rcu_do_batch kernel/rcu/tree.c:2523 [inline]
 rcu_core+0xa15/0x1650 kernel/rcu/tree.c:2763
 __do_softirq+0x3b3/0x93a kernel/softirq.c:558
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x155/0x240 kernel/softirq.c:637
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__should_failslab+0x8d/0xd0 mm/failslab.c:33
Code: 48 c1 e8 03 42 0f b6 04 30 84 c0 75 49 f6 45 03 02 75 07 31 c0 5b 41 5e 5d c3 48 83 c3 1c 48 89 d8 48 c1 e8 03 42 0f b6 04 30 <84> c0 75 12 8b 33 48 c7 c7 c0 5d 9f 8c 5b 41 5e 5d e9 cd 36 5c 02
RSP: 0018:ffffc900045efcb0 EFLAGS: 00000a07
RAX: 0000000000000000 RBX: ffff888011dec79c RCX: ffff88801f08d940
RDX: ffff88801f08d940 RSI: 0000000000000cc0 RDI: ffff888011dec780
RBP: 0000000000000cc0 R08: dffffc0000000000 R09: fffffbfff1bc8b5e
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888011dec780
R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000001
 should_failslab+0x5/0x20 mm/slab_common.c:1337
 slab_pre_alloc_hook+0x53/0xc0 mm/slab.h:494
 slab_alloc_node mm/slub.c:3134 [inline]
 slab_alloc mm/slub.c:3228 [inline]
 kmem_cache_alloc+0x3f/0x280 mm/slub.c:3233
 alloc_inode fs/inode.c:238 [inline]
 new_inode_pseudo+0x78/0x210 fs/inode.c:937
 get_pipe_inode fs/pipe.c:877 [inline]
 create_pipe_files+0x4c/0x700 fs/pipe.c:917
 __do_pipe_flags+0x46/0x200 fs/pipe.c:966
 do_pipe2+0xd0/0x300 fs/pipe.c:1014
 __do_sys_pipe2 fs/pipe.c:1032 [inline]
 __se_sys_pipe2 fs/pipe.c:1030 [inline]
 __x64_sys_pipe2+0x56/0x60 fs/pipe.c:1030
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fd0ca018ea9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd0c858b0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000125
RAX: ffffffffffffffda RBX: 00007fd0ca146f80 RCX: 00007fd0ca018ea9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000240
RBP: 00007fd0ca0654a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fd0ca146f80 R15: 00007ffebbd475c8
 </TASK>
----------------
Code disassembly (best guess):
   0:	48 c1 e8 03          	shr    $0x3,%rax
   4:	42 0f b6 04 30       	movzbl (%rax,%r14,1),%eax
   9:	84 c0                	test   %al,%al
   b:	75 49                	jne    0x56
   d:	f6 45 03 02          	testb  $0x2,0x3(%rbp)
  11:	75 07                	jne    0x1a
  13:	31 c0                	xor    %eax,%eax
  15:	5b                   	pop    %rbx
  16:	41 5e                	pop    %r14
  18:	5d                   	pop    %rbp
  19:	c3                   	ret
  1a:	48 83 c3 1c          	add    $0x1c,%rbx
  1e:	48 89 d8             	mov    %rbx,%rax
  21:	48 c1 e8 03          	shr    $0x3,%rax
  25:	42 0f b6 04 30       	movzbl (%rax,%r14,1),%eax
* 2a:	84 c0                	test   %al,%al <-- trapping instruction
  2c:	75 12                	jne    0x40
  2e:	8b 33                	mov    (%rbx),%esi
  30:	48 c7 c7 c0 5d 9f 8c 	mov    $0xffffffff8c9f5dc0,%rdi
  37:	5b                   	pop    %rbx
  38:	41 5e                	pop    %r14
  3a:	5d                   	pop    %rbp
  3b:	e9 cd 36 5c 02       	jmp    0x25c370d