BUG: unable to handle page fault for address: ffffed101ffffffc
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 21ffef067 P4D 21ffef067 PUD 12fff6067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 7205 Comm: syz-executor.5 Not tainted 5.9.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:avc_start_pgoff mm/interval_tree.c:63 [inline]
RIP: 0010:__anon_vma_interval_tree_insert mm/interval_tree.c:71 [inline]
RIP: 0010:anon_vma_interval_tree_insert+0x1c6/0x4c0 mm/interval_tree.c:82
Code: 18 4c 89 e7 4c 89 fe e8 28 2b d2 ff 4d 39 fc 76 09 e8 fe 2e d2 ff 4c 89 63 18 e8 f5 2e d2 ff 48 8d 7b e0 48 89 f8 48 c1 e8 03 <80> 3c 28 00 0f 85 2c 02 00 00 4c 8b 7b e0 49 8d bf 98 00 00 00 48
RSP: 0018:ffffc90005397960 EFLAGS: 00010a06
RAX: 1ffff1101ffffffc RBX: ffff888100000000 RCX: ffffffff81a21bf8
RDX: ffff88804bd58240 RSI: ffffffff81a21c0b RDI: ffff8880ffffffe0
RBP: dffffc0000000000 R08: 00000000d9b9baa7 R09: ffff88804bd58b20
R10: 000000000000159f R11: 0000000000000001 R12: 000000000000159f
R13: 0000000000001590 R14: ffff8881cf16e000 R15: ffffffffffffffff
FS:  0000000002a63940(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffed101ffffffc CR3: 00000000a715a000 CR4: 00000000001526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 anon_vma_chain_link mm/rmap.c:151 [inline]
 anon_vma_clone+0x23f/0x5f0 mm/rmap.c:292
 anon_vma_fork+0x82/0x630 mm/rmap.c:345
 dup_mmap kernel/fork.c:548 [inline]
 dup_mm+0x944/0x1300 kernel/fork.c:1354
 copy_mm kernel/fork.c:1410 [inline]
 copy_process+0x28e4/0x6920 kernel/fork.c:2069
 _do_fork+0xe8/0xb10 kernel/fork.c:2428
 __do_sys_clone+0xc8/0x110 kernel/fork.c:2545
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45bb8a
Code: f7 d8 64 89 04 25 d4 02 00 00 64 4c 8b 0c 25 10 00 00 00 31 d2 4d 8d 91 d0 02 00 00 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 f5 00 00 00 85 c0 41 89 c5 0f 85 fc 00 00
RSP: 002b:000000000169fd60 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 000000000169fd60 RCX: 000000000045bb8a
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 000000000169fda0 R08: 0000000000000001 R09: 0000000002a63940
R10: 0000000002a63c10 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 000000000169fdf0
Modules linked in:
CR2: ffffed101ffffffc
---[ end trace e9f04faea0b58c52 ]---
RIP: 0010:avc_start_pgoff mm/interval_tree.c:63 [inline]
RIP: 0010:__anon_vma_interval_tree_insert mm/interval_tree.c:71 [inline]
RIP: 0010:anon_vma_interval_tree_insert+0x1c6/0x4c0 mm/interval_tree.c:82
Code: 18 4c 89 e7 4c 89 fe e8 28 2b d2 ff 4d 39 fc 76 09 e8 fe 2e d2 ff 4c 89 63 18 e8 f5 2e d2 ff 48 8d 7b e0 48 89 f8 48 c1 e8 03 <80> 3c 28 00 0f 85 2c 02 00 00 4c 8b 7b e0 49 8d bf 98 00 00 00 48
RSP: 0018:ffffc90005397960 EFLAGS: 00010a06
RAX: 1ffff1101ffffffc RBX: ffff888100000000 RCX: ffffffff81a21bf8
RDX: ffff88804bd58240 RSI: ffffffff81a21c0b RDI: ffff8880ffffffe0
RBP: dffffc0000000000 R08: 00000000d9b9baa7 R09: ffff88804bd58b20
R10: 000000000000159f R11: 0000000000000001 R12: 000000000000159f
R13: 0000000000001590 R14: ffff8881cf16e000 R15: ffffffffffffffff
FS:  0000000002a63940(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffed101ffffffc CR3: 00000000a715a000 CR4: 00000000001526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400