------------[ cut here ]------------
WARNING: CPU: 1 PID: 6833 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 6833 Comm: syz.9.851 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
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:ffffc90000dd0cf0 EFLAGS: 00010006
RAX: ffffffff819ed900 RBX: 0000000000000000 RCX: ffff8880200ad940
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed1004015b29
R10: ffffed1004015b29 R11: 1ffff11004015b28 R12: ffff8880200af0c8
R13: 00007ffffffff000 R14: ffffc90000dd0d68 R15: 0000000000000000
FS:  00007f8b709326c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000050b06000 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+0x34/0x864
 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
 __traceiter_tlb_flush+0x69/0xb0 include/trace/events/tlb.h:38
 trace_tlb_flush+0xe6/0x110 include/trace/events/tlb.h:38
 flush_tlb_func+0x43f/0x510 arch/x86/mm/tlb.c:855
 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+0x8ef/0x1d90 arch/x86/kernel/unwind_orc.c:-1
Code: c0 0f 85 20 0f 00 00 4c 89 fa 48 c1 ea 03 42 0f b6 04 2a 84 c0 0f 85 2c 0f 00 00 41 0f b6 46 01 83 e0 03 ff 24 c5 50 80 08 8a <48> 89 54 24 50 48 8d 7b 08 48 89 f8 48 c1 e8 03 42 80 3c 28 00 74
RSP: 0018:ffffc90004acee28 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc90004aceee8 RCX: ffffffff8dd9f7e0
RDX: 1ffffffff1ced553 RSI: ffffffff8e76aa70 RDI: ffffc90004acff58
RBP: ffffc90004acef30 R08: 000000000000000d R09: 0000000000000008
R10: fffff52000959de9 R11: 1ffff92000959de7 R12: 1ffffffff1ced553
R13: dffffc0000000000 R14: ffffffff8e76aa98 R15: ffffffff8e76aa99
 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 mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 ____kasan_kmalloc mm/kasan/common.c:513 [inline]
 __kasan_krealloc+0x12f/0x1b0 mm/kasan/common.c:581
 kasan_krealloc include/linux/kasan.h:284 [inline]
 __do_krealloc mm/slab_common.c:1240 [inline]
 krealloc+0xb1/0xf0 mm/slab_common.c:1277
 push_jmp_history kernel/bpf/verifier.c:2125 [inline]
 is_state_visited kernel/bpf/verifier.c:11082 [inline]
 do_check+0x2d3d/0xeac0 kernel/bpf/verifier.c:11222
 do_check_common+0xe67/0x16c0 kernel/bpf/verifier.c:13506
 do_check_main kernel/bpf/verifier.c:13569 [inline]
 bpf_check+0x31f3/0xf090 kernel/bpf/verifier.c:14140
 bpf_prog_load+0x1043/0x1550 kernel/bpf/syscall.c:2354
 __sys_bpf+0x4c2/0x670 kernel/bpf/syscall.c:4657
 __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: 0033:0x7f8b726cb749
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:00007f8b70932038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f8b72921fa0 RCX: 00007f8b726cb749
RDX: 0000000000000094 RSI: 0000200000000840 RDI: 0000000000000005
RBP: 00007f8b7274ff91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8b72922038 R14: 00007f8b72921fa0 R15: 00007ffd411acdb8
 </TASK>
----------------
Code disassembly (best guess):
   0:	c0 0f 85             	rorb   $0x85,(%rdi)
   3:	20 0f                	and    %cl,(%rdi)
   5:	00 00                	add    %al,(%rax)
   7:	4c 89 fa             	mov    %r15,%rdx
   a:	48 c1 ea 03          	shr    $0x3,%rdx
   e:	42 0f b6 04 2a       	movzbl (%rdx,%r13,1),%eax
  13:	84 c0                	test   %al,%al
  15:	0f 85 2c 0f 00 00    	jne    0xf47
  1b:	41 0f b6 46 01       	movzbl 0x1(%r14),%eax
  20:	83 e0 03             	and    $0x3,%eax
  23:	ff 24 c5 50 80 08 8a 	jmp    *-0x75f77fb0(,%rax,8)
* 2a:	48 89 54 24 50       	mov    %rdx,0x50(%rsp) <-- trapping instruction
  2f:	48 8d 7b 08          	lea    0x8(%rbx),%rdi
  33:	48 89 f8             	mov    %rdi,%rax
  36:	48 c1 e8 03          	shr    $0x3,%rax
  3a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
  3f:	74                   	.byte 0x74