------------[ cut here ]------------
WARNING: CPU: 0 PID: 11131 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 11131 Comm: syz.2.1547 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 3d 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 c0 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: 0000:ffffc90000007d40 EFLAGS: 00010006
RAX: ffffffff819ed760 RBX: 0000000000000008 RCX: ffff88801debd940
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed1003db8826
R10: ffffed1003db8826 R11: 1ffff11003db8825 R12: ffff88801debf0c8
R13: dffffc0000000000 R14: ffffc90000007da8 R15: 0000000000000000
FS:  00007fd596a8d6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd5987bcdb0 CR3: 00000000623d6000 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_user kernel/trace/bpf_trace.c:166 [inline]
 bpf_probe_read_user+0x26/0x70 kernel/trace/bpf_trace.c:163
 bpf_prog_1604070e585f43ad+0x5e/0x104
 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_mem_to_shadow include/linux/kasan.h:55 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [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+0x54/0x290 mm/kasan/generic.c:189
Code: 0f 82 43 02 00 00 49 bf 01 00 00 00 00 fc ff df 49 89 fb 49 c1 eb 03 49 b8 00 00 00 00 00 fc ff df 4f 8d 0c 03 48 8d 5c 37 ff <48> c1 eb 03 4e 8d 14 3b 4d 89 d6 4d 29 ce 49 83 fe 10 7f 26 4d 85
RSP: 0000:ffffc900031ef860 EFLAGS: 00000a02
RAX: 0000000000000001 RBX: ffffffff8d6991ef RCX: ffffffff815bf8eb
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8d6991e8
RBP: ffffc900031ef9a0 R08: dffffc0000000000 R09: fffffbfff1ad323d
R10: fffff94000397309 R11: 1ffffffff1ad323d R12: ffffffff8c11c660
R13: 1ffff9200063df1c R14: 0000000000000000 R15: dffffc0000000001
 instrument_atomic_read include/linux/instrumented.h:71 [inline]
 test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
 cpumask_test_cpu include/linux/cpumask.h:344 [inline]
 cpu_online include/linux/cpumask.h:895 [inline]
 trace_lock_acquire include/trace/events/lock.h:13 [inline]
 lock_acquire+0xbb/0x3f0 kernel/locking/lockdep.c:5594
 rcu_lock_acquire+0x20/0x30 include/linux/rcupdate.h:312
 rcu_read_lock include/linux/rcupdate.h:739 [inline]
 lock_page_memcg+0xa9/0x410 mm/memcontrol.c:2047
 page_add_file_rmap+0x185/0x940 mm/rmap.c:1219
 do_set_pte+0x3c9/0x530 mm/memory.c:4069
 filemap_map_pages+0xe7e/0x1390 mm/filemap.c:3344
 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+0x2580/0x43c0 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: 0033:0x7fd5987bcdb0
Code: Unable to access opcode bytes at RIP 0x7fd5987bcd86.
RSP: 002b:00007fd596a8d118 EFLAGS: 00010246
RAX: fffffffffffffeb8 RBX: 00007fd596a8d6c0 RCX: 00007fd59885a409
RDX: 00007fd596a8dd78 RSI: 0000000000000058 RDI: 00007fd596a8d6c0
RBP: 0000000000000000 R08: 00007fd596a8d6c0 R09: 00007ffcfbf08b47
R10: 0000000000000008 R11: 0000000000000202 R12: ffffffffffffffa8
R13: 000000000000004d R14: 00007ffcfbf08a60 R15: 00007ffcfbf08b48
 </TASK>
----------------
Code disassembly (best guess):
   0:	0f 82 43 02 00 00    	jb     0x249
   6:	49 bf 01 00 00 00 00 	movabs $0xdffffc0000000001,%r15
   d:	fc ff df
  10:	49 89 fb             	mov    %rdi,%r11
  13:	49 c1 eb 03          	shr    $0x3,%r11
  17:	49 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%r8
  1e:	fc ff df
  21:	4f 8d 0c 03          	lea    (%r11,%r8,1),%r9
  25:	48 8d 5c 37 ff       	lea    -0x1(%rdi,%rsi,1),%rbx
* 2a:	48 c1 eb 03          	shr    $0x3,%rbx <-- trapping instruction
  2e:	4e 8d 14 3b          	lea    (%rbx,%r15,1),%r10
  32:	4d 89 d6             	mov    %r10,%r14
  35:	4d 29 ce             	sub    %r9,%r14
  38:	49 83 fe 10          	cmp    $0x10,%r14
  3c:	7f 26                	jg     0x64
  3e:	4d                   	rex.WRB
  3f:	85                   	.byte 0x85