------------[ cut here ]------------
WARNING: CPU: 1 PID: 20 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 20 Comm: ksoftirqd/1 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 8d f6 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 10 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:ffffc90000dd0c50 EFLAGS: 00010006
RAX: ffffffff819ed900 RBX: 0000000000000000 RCX: ffff888016a90000
RDX: 0000000000010100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed1002d52001
R10: ffffed1002d52001 R11: 1ffff11002d52000 R12: ffff888016a91788
R13: 00007ffffffff000 R14: ffffc90000dd0cc8 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6fe9d93000 CR3: 000000000be8e000 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_f3c4d654356a1293+0x34/0x100
 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_run2+0x15b/0x2d0 kernel/trace/bpf_trace.c:1915
 trace_tlb_flush+0xe6/0x110 include/trace/events/tlb.h:38
 switch_mm_irqs_off+0x6e3/0x9a0 arch/x86/mm/tlb.c:-1
 flush_tlb_func+0x1bc/0x510 arch/x86/mm/tlb.c:773
 flush_smp_call_function_queue+0x2a9/0x760 kernel/smp.c:628
 __sysvec_call_function_single+0x98/0x240 arch/x86/kernel/smp.c:248
 instr_sysvec_call_function_single arch/x86/kernel/smp.c:243 [inline]
 sysvec_call_function_single+0x98/0xc0 arch/x86/kernel/smp.c:243
 </IRQ>
 <TASK>
 asm_sysvec_call_function_single+0x16/0x20 arch/x86/include/asm/idtentry.h:684
RIP: 0010:unwind_next_frame+0x6eb/0x1d90 arch/x86/kernel/unwind_orc.c:471
Code: 44 89 f9 80 e1 07 38 c1 0f 8c e0 01 00 00 be 02 00 00 00 48 89 7c 24 08 4c 89 ff e8 6f b5 87 00 e9 fd 14 00 00 48 8b 44 24 40 <42> 80 3c 28 00 4c 8b 74 24 38 74 0c 4c 89 f7 e8 91 b4 87 00 48 8b
RSP: 0018:ffffc90000da7548 EFLAGS: 00000297
RAX: 1ffff920001b4ec8 RBX: ffffc90000da7608 RCX: ffffffff8d78d988
RDX: ffffffff8de4fd16 RSI: ffffffff8de4fd16 RDI: 0000000000000001
RBP: ffffffff81508d65 R08: 0000000000000001 R09: 0000000000000008
R10: fffff520001b4ecd R11: 1ffff920001b4ecb R12: 1ffffffff1bc9fa3
R13: dffffc0000000000 R14: ffffffff8de4fd1a R15: 0000000000000005
 arch_stack_walk+0x10c/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x98/0xe0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:46
 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360
 ____kasan_slab_free+0xd5/0x110 mm/kasan/common.c:366
 kasan_slab_free include/linux/kasan.h:230 [inline]
 slab_free_hook mm/slub.c:1710 [inline]
 slab_free_freelist_hook+0xea/0x170 mm/slub.c:1736
 slab_free mm/slub.c:3504 [inline]
 kmem_cache_free+0x8f/0x210 mm/slub.c:3520
 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
 run_ksoftirqd+0x98/0xf0 kernel/softirq.c:943
 smpboot_thread_fn+0x4f6/0x970 kernel/smpboot.c:164
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
----------------
Code disassembly (best guess):
   0:	44 89 f9             	mov    %r15d,%ecx
   3:	80 e1 07             	and    $0x7,%cl
   6:	38 c1                	cmp    %al,%cl
   8:	0f 8c e0 01 00 00    	jl     0x1ee
   e:	be 02 00 00 00       	mov    $0x2,%esi
  13:	48 89 7c 24 08       	mov    %rdi,0x8(%rsp)
  18:	4c 89 ff             	mov    %r15,%rdi
  1b:	e8 6f b5 87 00       	call   0x87b58f
  20:	e9 fd 14 00 00       	jmp    0x1522
  25:	48 8b 44 24 40       	mov    0x40(%rsp),%rax
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	4c 8b 74 24 38       	mov    0x38(%rsp),%r14
  34:	74 0c                	je     0x42
  36:	4c 89 f7             	mov    %r14,%rdi
  39:	e8 91 b4 87 00       	call   0x87b4cf
  3e:	48                   	rex.W
  3f:	8b                   	.byte 0x8b