node ffff8880687bec00 offset 0 parent ffff8880687be3c0 shift 0 count 64 values 0 array ffff88807daf9be0 list ffff8880687bec18 ffff8880687bec18 marks 0 0 0
------------[ cut here ]------------
kernel BUG at ./include/linux/xarray.h:1441!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 7123 Comm: syz.6.241 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:XAS_INVALID include/linux/xarray.h:1441 [inline]
RIP: 0010:collapse_file mm/khugepaged.c:2055 [inline]
RIP: 0010:collapse_scan_file+0x4f98/0x5230 mm/khugepaged.c:2404
Code: ff 4c 89 e7 48 c7 c6 20 b2 dc 8b e8 72 52 f1 fe 90 0f 0b 48 85 db 0f 84 03 01 00 00 e8 41 e5 8f ff 48 89 df e8 89 90 7b 09 90 <0f> 0b e8 31 e5 8f ff 48 89 df 48 c7 c6 20 b2 dc 8b e8 42 52 f1 fe
RSP: 0018:ffffc90003346e20 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8880687bec00 RCX: 83e0a182209d9800
RDX: ffffc90004be9000 RSI: 00000000000090fe RDI: 00000000000090ff
RBP: ffffc90003347130 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1cbd3cc R12: ffffea0001b16eb0
R13: dffffc0000000000 R14: 0000000000000000 R15: ffffc90003347010
FS:  00007f43408e46c0(0000) GS:ffff888125536000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f43408e3ff8 CR3: 0000000059a7e000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 collapse_single_pmd+0x22b/0x4510 mm/khugepaged.c:2437
 madvise_collapse+0x34c/0x820 mm/khugepaged.c:2859
 madvise_vma_behavior+0x1094/0x4460 mm/madvise.c:1362
 madvise_walk_vmas+0x573/0xae0 mm/madvise.c:1711
 madvise_do_behavior+0x386/0x540 mm/madvise.c:1927
 do_madvise+0x1fa/0x2e0 mm/madvise.c:2020
 __do_sys_madvise mm/madvise.c:2029 [inline]
 __se_sys_madvise mm/madvise.c:2027 [inline]
 __x64_sys_madvise+0xa6/0xc0 mm/madvise.c:2027
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f433f99c799
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:00007f43408e4028 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007f433fc16090 RCX: 00007f433f99c799
RDX: 0000000000000019 RSI: 0000000000600003 RDI: 0000200000000000
RBP: 00007f433fa32c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f433fc16128 R14: 00007f433fc16090 R15: 00007ffd51dc91b8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:XAS_INVALID include/linux/xarray.h:1441 [inline]
RIP: 0010:collapse_file mm/khugepaged.c:2055 [inline]
RIP: 0010:collapse_scan_file+0x4f98/0x5230 mm/khugepaged.c:2404
Code: ff 4c 89 e7 48 c7 c6 20 b2 dc 8b e8 72 52 f1 fe 90 0f 0b 48 85 db 0f 84 03 01 00 00 e8 41 e5 8f ff 48 89 df e8 89 90 7b 09 90 <0f> 0b e8 31 e5 8f ff 48 89 df 48 c7 c6 20 b2 dc 8b e8 42 52 f1 fe
RSP: 0018:ffffc90003346e20 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8880687bec00 RCX: 83e0a182209d9800
RDX: ffffc90004be9000 RSI: 00000000000090fe RDI: 00000000000090ff
RBP: ffffc90003347130 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1cbd3cc R12: ffffea0001b16eb0
R13: dffffc0000000000 R14: 0000000000000000 R15: ffffc90003347010
FS:  00007f43408e46c0(0000) GS:ffff888125436000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1ad14e4de0 CR3: 0000000059a7e000 CR4: 00000000003526f0