Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 UID: 0 PID: 22738 Comm: syz.4.5529 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
RIP: 0010:__pcpu_freelist_pop+0x6b7/0x8c0
Code: 10 48 3b 8c 24 80 00 00 00 0f 85 b4 01 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 89 f8 48 c1 e8 03 <80> 3c 18 00 48 89 7c 24 20 74 0a e8 69 3b 41 00 48 8b 7c 24 20 48
RSP: 0018:ffffc90006076d80 EFLAGS: 00010046
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffe8ffffc26050
RDX: ffffc9000404a000 RSI: 000000000000c3c8 RDI: 0000000000000002
RBP: ffffc90006076e50 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000c0edbc R12: 1ffffd1ffff84c09
R13: ffffe8ffffc26048 R14: 0000000000000001 R15: 0000000000000000
FS:  00007fdbfd3c16c0(0000) GS:ffff8881a3c1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f54d4648fc8 CR3: 000000011a266000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 pcpu_freelist_pop+0xca/0x170
 __bpf_get_stackid+0x574/0xcf0
 bpf_get_stackid_raw_tp+0x196/0x210
 bpf_prog_12712c88fd19bd5b+0x2a/0x32
 bpf_trace_run4+0x28e/0x4a0
 trace_mm_page_alloc+0x129/0x150
 __alloc_frozen_pages_noprof+0x1d6/0x370
 alloc_pages_mpol+0x232/0x4a0
 alloc_pages_noprof+0xa9/0x190
 pte_alloc_one+0x21/0x170
 __pte_alloc+0x25/0x1a0
 copy_pmd_range+0x6a91/0x71d0
 copy_page_range+0xc14/0x1270
 dup_mmap+0xf57/0x1ac0
 copy_mm+0x13c/0x4b0
 copy_process+0x1706/0x3c00
 kernel_clone+0x21e/0x840
 __x64_sys_clone+0x18b/0x1e0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdbfc58ebe9
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:00007fdbfd3c0fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fdbfc7b5fa0 RCX: 00007fdbfc58ebe9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fdbfc611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdbfc7b6038 R14: 00007fdbfc7b5fa0 R15: 00007fff2c06c738
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__pcpu_freelist_pop+0x6b7/0x8c0
Code: 10 48 3b 8c 24 80 00 00 00 0f 85 b4 01 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 89 f8 48 c1 e8 03 <80> 3c 18 00 48 89 7c 24 20 74 0a e8 69 3b 41 00 48 8b 7c 24 20 48
RSP: 0018:ffffc90006076d80 EFLAGS: 00010046
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffe8ffffc26050
RDX: ffffc9000404a000 RSI: 000000000000c3c8 RDI: 0000000000000002
RBP: ffffc90006076e50 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000c0edbc R12: 1ffffd1ffff84c09
R13: ffffe8ffffc26048 R14: 0000000000000001 R15: 0000000000000000
FS:  00007fdbfd3c16c0(0000) GS:ffff8881a3c1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f54d4648fc8 CR3: 000000011a266000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
