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BUG: KASAN: global-out-of-bounds in print_bpf_insn+0xa9d/0x2910
Read of size 8 at addr ffffffff8c170978 by task syz.1.5709/26525

CPU: 0 UID: 0 PID: 26525 Comm: syz.1.5709 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150
 print_address_description+0x55/0x1e0
 print_report+0x58/0x70
 kasan_report+0x117/0x150
 print_bpf_insn+0xa9d/0x2910
 diag_print_insn_context+0x433/0xd00
 bpf_diag_source+0x639/0x18d0
 bpf_diag_program_structure+0x31c/0x430
 check_subprogs+0x6d3/0x740
 bpf_check+0x17ba/0x2e10
 bpf_prog_load+0x14d6/0x1c20
 __sys_bpf+0xd0d/0xd90
 __x64_sys_bpf+0xba/0xd0
 do_syscall_64+0x166/0x520
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5801d9e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f57ffff6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f5802025fa0 RCX: 00007f5801d9e159
RDX: 0000000000000094 RSI: 0000200000000200 RDI: 0000000000000005
RBP: 00007f5801e35024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5802026038 R14: 00007f5802025fa0 R15: 00007ffcd839dd38
 </TASK>

The buggy address belongs to the variable:
 bpf_ldsx_string+0x18/0x60

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xc170
flags: 0xfff00000002000(reserved|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000002000 ffffea0000305c08 ffffea0000305c08 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner info is not present (never set?)

Memory state around the buggy address:
 ffffffff8c170800: 00 00 00 00 00 03 f9 f9 f9 f9 f9 f9 00 01 f9 f9
 ffffffff8c170880: 00 00 00 05 f9 f9 f9 f9 00 06 f9 f9 00 04 f9 f9
>ffffffff8c170900: 00 05 f9 f9 00 00 00 06 f9 f9 f9 f9 00 00 00 f9
                                                                ^
 ffffffff8c170980: f9 f9 f9 f9 00 00 00 00 00 00 00 03 f9 f9 f9 f9
 ffffffff8c170a00: 00 00 00 00 01 f9 f9 f9 f9 f9 f9 f9 00 00 f9 f9
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