general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 PID: 1153 Comm: khugepaged Not tainted 5.7.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:collapse_huge_page+0x4f2/0x3410 mm/khugepaged.c:1022
Code: 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 b6 2e 00 00 48 8b 89 88 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 ca 48 c1 ea 03 <80> 3c 02 00 0f 85 79 2e 00 00 48 8b 39 48 83 c7 08 e8 f8 41 8f 05
RSP: 0018:ffffc90004c97ac8 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff8880917e2300 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff8881e7e28800 RDI: ffff8880a87ac2d8
RBP: ffffc90004c97cb0 R08: 1ffffffff11a897a R09: ffffed10122fc508
R10: ffff8880917e283f R11: ffffed10122fc507 R12: ffffc90004c97c88
R13: ffff8880917e23b8 R14: ffffea0008478000 R15: 1ffff92000992f71
FS:  0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd07ee219c CR3: 00000002104db000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 khugepaged_scan_pmd mm/khugepaged.c:1245 [inline]
 khugepaged_scan_mm_slot mm/khugepaged.c:2015 [inline]
 khugepaged_do_scan mm/khugepaged.c:2096 [inline]
 khugepaged+0x26da/0x32f0 mm/khugepaged.c:2141
 kthread+0x340/0x410 kernel/kthread.c:268
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:351
Modules linked in:
---[ end trace 202466df293c4f0c ]---
RIP: 0010:collapse_huge_page+0x4f2/0x3410 mm/khugepaged.c:1022
Code: 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 b6 2e 00 00 48 8b 89 88 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 ca 48 c1 ea 03 <80> 3c 02 00 0f 85 79 2e 00 00 48 8b 39 48 83 c7 08 e8 f8 41 8f 05
RSP: 0018:ffffc90004c97ac8 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff8880917e2300 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff8881e7e28800 RDI: ffff8880a87ac2d8
RBP: ffffc90004c97cb0 R08: 1ffffffff11a897a R09: ffffed10122fc508
R10: ffff8880917e283f R11: ffffed10122fc507 R12: ffffc90004c97c88
R13: ffff8880917e23b8 R14: ffffea0008478000 R15: 1ffff92000992f71
FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9c54ad2740 CR3: 0000000094d1d000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400