------------[ cut here ]------------
WARNING: CPU: 0 PID: 4427 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 4427 Comm: dhcpcd-run-hook 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:ffffc90000007e38 EFLAGS: 00010006
RAX: ffffffff819ecfb0 RBX: 0000000000000005 RCX: ffff888075e28000
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed100ebc5001
R10: ffffed100ebc5001 R11: 1ffff1100ebc5000 R12: ffff888075e29788
R13: 00007ffffffff000 R14: ffffc90000007ea8 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007faf44b647d0 CR3: 0000000079b70000 CR4: 00000000003506f0
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_eaa6c3274495767e+0x35/0x498
 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_prog_test_run_raw_tp+0x1c7/0x3e0 net/bpf/test_run.c:335
 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:bytes_is_nonzero mm/kasan/generic.c:87 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:102 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x81/0x290 mm/kasan/generic.c:189
Code: 03 4e 8d 14 3b 4d 89 d6 4d 29 ce 49 83 fe 10 7f 26 4d 85 f6 0f 84 39 01 00 00 48 f7 d3 4c 01 db 41 80 39 00 0f 85 c1 01 00 00 <49> ff c1 48 ff c3 75 ee e9 1c 01 00 00 44 89 cb 83 e3 07 0f 84 b5
RSP: 0018:ffffc9000316f4e8 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffffffffffffffff RCX: ffffffff8134829d
RDX: 0000000000000001 RSI: 0000000000000010 RDI: ffffc9000316f638
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffff5200062dec8
R10: fffff5200062dec9 R11: 1ffff9200062dec7 R12: 1ffffffff1bdbd23
R13: dffffc0000000000 R14: 0000000000000002 R15: dffffc0000000001
 memset+0x1e/0x40 mm/kasan/shadow.c:44
 unwind_next_frame+0xa3d/0x1d90 arch/x86/kernel/unwind_orc.c:547
 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:1705 [inline]
 slab_free_freelist_hook+0xea/0x170 mm/slub.c:1731
 slab_free mm/slub.c:3499 [inline]
 kmem_cache_free+0x8f/0x210 mm/slub.c:3515
 anon_vma_chain_free mm/rmap.c:143 [inline]
 unlink_anon_vmas+0x2c8/0x660 mm/rmap.c:417
 free_pgtables+0x177/0x2a0 mm/memory.c:426
 exit_mmap+0x39e/0x5f0 mm/mmap.c:3213
 __mmput+0x115/0x3b0 kernel/fork.c:1127
 exit_mm+0x567/0x6c0 kernel/exit.c:550
 do_exit+0x5a1/0x20a0 kernel/exit.c:870
 do_group_exit+0x12e/0x300 kernel/exit.c:997
 __do_sys_exit_group kernel/exit.c:1008 [inline]
 __se_sys_exit_group kernel/exit.c:1006 [inline]
 __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1006
 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: 0033:0x7faf44a626c5
Code: Unable to access opcode bytes at RIP 0x7faf44a6269b.
RSP: 002b:00007ffd540ce708 EFLAGS: 00000202 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007ffd540cea04 RCX: 00007faf44a626c5
RDX: 00000000000000e7 RSI: ffffffffffffff88 RDI: 0000000000000000
RBP: 0000000000000003 R08: 00007ffd540ce800 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 00007ffd540cea40 R14: 00007faf44c6a000 R15: 000055e097640d98
 </TASK>
----------------
Code disassembly (best guess):
   0:	03 4e 8d             	add    -0x73(%rsi),%ecx
   3:	14 3b                	adc    $0x3b,%al
   5:	4d 89 d6             	mov    %r10,%r14
   8:	4d 29 ce             	sub    %r9,%r14
   b:	49 83 fe 10          	cmp    $0x10,%r14
   f:	7f 26                	jg     0x37
  11:	4d 85 f6             	test   %r14,%r14
  14:	0f 84 39 01 00 00    	je     0x153
  1a:	48 f7 d3             	not    %rbx
  1d:	4c 01 db             	add    %r11,%rbx
  20:	41 80 39 00          	cmpb   $0x0,(%r9)
  24:	0f 85 c1 01 00 00    	jne    0x1eb
* 2a:	49 ff c1             	inc    %r9 <-- trapping instruction
  2d:	48 ff c3             	inc    %rbx
  30:	75 ee                	jne    0x20
  32:	e9 1c 01 00 00       	jmp    0x153
  37:	44 89 cb             	mov    %r9d,%ebx
  3a:	83 e3 07             	and    $0x7,%ebx
  3d:	0f                   	.byte 0xf
  3e:	84                   	.byte 0x84
  3f:	b5                   	.byte 0xb5