BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 69e16067 P4D 69e16067 PUD 768bd067 PMD 0 
Oops: 0010 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 4491 Comm: syz-executor.1 Not tainted 5.16.0-rc6-next-20211224-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:0x0
Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6.
RSP: 0018:ffffc9000dfb7ca0 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 1ffff92001bf6f9b RCX: ffffc90003cd9000
RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffff88806866e400
RBP: ffffc9000dfb7f08 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff818675b9 R11: 0000000000000000 R12: ffffffff89b3fde0
R13: ffff88806866e400 R14: ffff888075f42f00 R15: 0000000000000000
FS:  00007f4c9f7e6700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 000000007ebf7000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 map_get_next_key kernel/bpf/syscall.c:1293 [inline]
 __sys_bpf+0x36d9/0x5970 kernel/bpf/syscall.c:4628
 __do_sys_bpf kernel/bpf/syscall.c:4738 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:4736 [inline]
 __x64_sys_bpf+0x75/0xb0 kernel/bpf/syscall.c:4736
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f4ca0e70e99
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4c9f7e6168 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f4ca0f83f60 RCX: 00007f4ca0e70e99
RDX: 0000000000000020 RSI: 0000000020000080 RDI: 0000000000000004
RBP: 00007f4ca0ecaff1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcece1770f R14: 00007f4c9f7e6300 R15: 0000000000022000
 </TASK>
Modules linked in:
CR2: 0000000000000000
---[ end trace 0000000000000000 ]---
RIP: 0010:0x0
Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6.
RSP: 0018:ffffc9000dfb7ca0 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 1ffff92001bf6f9b RCX: ffffc90003cd9000
RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffff88806866e400
RBP: ffffc9000dfb7f08 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff818675b9 R11: 0000000000000000 R12: ffffffff89b3fde0
R13: ffff88806866e400 R14: ffff888075f42f00 R15: 0000000000000000
FS:  00007f4c9f7e6700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 000000007ebf7000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400