------------[ cut here ]------------
WARNING: CPU: 0 PID: 6867 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 6867 Comm: syz.2.664 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 0d 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 90 f2 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: 0000:ffffc90000007d38 EFLAGS: 00010006
RAX: ffffffff819ed980 RBX: 0000000000000008 RCX: ffff88802280bb80
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed1004501771
R10: ffffed1004501771 R11: 1ffff11004501770 R12: ffff88802280d308
R13: 00007ffffffff000 R14: ffffc90000007da8 R15: 0000000000000000
FS:  00007fb96541b6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffc44a0000 CR3: 0000000076c12000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
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_4d571c0aa826a670+0x5b/0x828
 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
 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:__kasan_check_read+0x2/0x10 mm/kasan/shadow.c:31
Code: 41 5d 41 5e 41 5f 5d c3 48 c7 c7 0b 71 b8 8b eb 0a 48 c7 c7 31 a1 a2 8b 48 89 de e8 c8 38 db 07 31 ed eb d7 00 00 cc cc 89 f6 <48> 8b 0c 24 31 d2 e9 43 ef ff ff 0f 1f 00 89 f6 48 8b 0c 24 ba 01
RSP: 0000:ffffc9000341fb38 EFLAGS: 00000293
RAX: ffffffff819d9df0 RBX: ffffea0001cbcf00 RCX: ffff88802280bb80
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffea0001cbcf00
RBP: ffffc9000341fcb0 R08: dffffc0000000000 R09: fffff940003979e1
R10: fffff940003979e1 R11: 1ffffd40003979e0 R12: 00fff00000002037
R13: dffffc0000000000 R14: 000000000000011c R15: 1ffffd40003979e0
 instrument_atomic_read include/linux/instrumented.h:71 [inline]
 test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
 PageHead include/linux/page-flags.h:590 [inline]
 thp_nr_pages include/linux/huge_mm.h:281 [inline]
 find_subpage include/linux/pagemap.h:465 [inline]
 filemap_map_pages+0xc6d/0x1390 mm/filemap.c:3326
 do_fault_around mm/memory.c:4243 [inline]
 do_read_fault mm/memory.c:4258 [inline]
 do_fault mm/memory.c:4392 [inline]
 handle_pte_fault mm/memory.c:4650 [inline]
 __handle_mm_fault mm/memory.c:4785 [inline]
 handle_mm_fault+0x257d/0x43b0 mm/memory.c:4883
 do_user_addr_fault+0x489/0xc80 arch/x86/mm/fault.c:1357
 handle_page_fault arch/x86/mm/fault.c:1445 [inline]
 exc_page_fault+0x60/0x100 arch/x86/mm/fault.c:1501
 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:606
RIP: 0033:0x7fb96714b830
Code: Unable to access opcode bytes at RIP 0x7fb96714b806.
RSP: 002b:00007fb96541b118 EFLAGS: 00010246
RAX: fffffffffffffeb8 RBX: 00007fb96541b6c0 RCX: 00007fb9671e8e89
RDX: 00007fb96541bd78 RSI: 0000000000000058 RDI: 00007fb96541b6c0
RBP: 0000000000000000 R08: 00007fb96541b6c0 R09: 00007ffdd33fc747
R10: 0000000000000008 R11: 0000000000000206 R12: ffffffffffffffa8
R13: 000000000000000b R14: 00007ffdd33fc660 R15: 00007ffdd33fc748
 </TASK>
----------------
Code disassembly (best guess):
   0:	41 5d                	pop    %r13
   2:	41 5e                	pop    %r14
   4:	41 5f                	pop    %r15
   6:	5d                   	pop    %rbp
   7:	c3                   	ret
   8:	48 c7 c7 0b 71 b8 8b 	mov    $0xffffffff8bb8710b,%rdi
   f:	eb 0a                	jmp    0x1b
  11:	48 c7 c7 31 a1 a2 8b 	mov    $0xffffffff8ba2a131,%rdi
  18:	48 89 de             	mov    %rbx,%rsi
  1b:	e8 c8 38 db 07       	call   0x7db38e8
  20:	31 ed                	xor    %ebp,%ebp
  22:	eb d7                	jmp    0xfffffffb
  24:	00 00                	add    %al,(%rax)
  26:	cc                   	int3
  27:	cc                   	int3
  28:	89 f6                	mov    %esi,%esi
* 2a:	48 8b 0c 24          	mov    (%rsp),%rcx <-- trapping instruction
  2e:	31 d2                	xor    %edx,%edx
  30:	e9 43 ef ff ff       	jmp    0xffffef78
  35:	0f 1f 00             	nopl   (%rax)
  38:	89 f6                	mov    %esi,%esi
  3a:	48 8b 0c 24          	mov    (%rsp),%rcx
  3e:	ba                   	.byte 0xba
  3f:	01                   	.byte 0x1