BUG: unable to handle page fault for address: fffffffffffffff1
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 72ac067 P4D 72ac067 
PUD 72ae067 PMD 0 
Oops: Oops: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 0 UID: 0 PID: 296 Comm: syz-executor411 Not tainted 6.12.38-syzkaller-g616c12b4d684 #0 00545ee46979a994717fa408b9c555c5aa5888cf
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:read_pages+0x47e/0x670 mm/readahead.c:190
Code: 48 b8 00 00 00 00 00 fc ff df 41 80 7c 05 00 00 74 08 4c 89 e7 e8 d2 a8 1c 00 49 8b 3c 24 48 89 de 4d 89 f3 41 ba 90 db d0 8b <45> 03 53 f1 74 02 0f 0b 2e e8 60 20 41 1e 4c 89 e7 e8 2c 36 00 00
RSP: 0018:ffffc9000122f160 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffffea0004678600 RCX: 1ffffffff0c2c571
RDX: 0000000000000000 RSI: ffffea0004678600 RDI: ffff888102b998c0
RBP: ffffc9000122f290 R08: ffffea0004678637 R09: 1ffffd40008cf0c6
R10: 000000008bd0db90 R11: 0000000000000000 R12: ffffc9000122f5f0
R13: 1ffff92000245ebe R14: 0000000000000000 R15: ffffffff86162b88
FS:  000055555ff62380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffff1 CR3: 0000000103344000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 page_cache_ra_order+0x8cd/0xdf0 mm/readahead.c:524
 page_cache_sync_ra+0x713/0x920 mm/readahead.c:627
 page_cache_sync_readahead include/linux/pagemap.h:1403 [inline]
 collapse_file mm/khugepaged.c:1902 [inline]
 hpage_collapse_scan_file+0xbab/0x3510 mm/khugepaged.c:2329
 madvise_collapse+0x4c6/0xaf0 mm/khugepaged.c:2771
 madvise_vma_behavior+0x69d/0x2d40 mm/madvise.c:1365
 madvise_walk_vmas+0x1b1/0x2e0 mm/madvise.c:1545
 do_madvise+0x508/0x8b0 mm/madvise.c:1732
 __do_sys_madvise mm/madvise.c:1748 [inline]
 __se_sys_madvise mm/madvise.c:1746 [inline]
 __x64_sys_madvise+0xae/0xc0 mm/madvise.c:1746
 x64_sys_call+0x20c3/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:29
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x58/0xf0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f8a384a83e9
Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc197ac798 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 0000200000000000 RCX: 00007f8a384a83e9
RDX: 0000000000000019 RSI: 0000000000c00000 RDI: 0000200000000000
RBP: 0030656c69662f2e R08: 00000000343e2000 R09: 00000000343e2000
R10: 00000000343e2000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffc197ac978 R14: 0000000000000001 R15: 0000000000000001
 </TASK>
Modules linked in:
CR2: fffffffffffffff1
---[ end trace 0000000000000000 ]---
RIP: 0010:read_pages+0x47e/0x670 mm/readahead.c:190
Code: 48 b8 00 00 00 00 00 fc ff df 41 80 7c 05 00 00 74 08 4c 89 e7 e8 d2 a8 1c 00 49 8b 3c 24 48 89 de 4d 89 f3 41 ba 90 db d0 8b <45> 03 53 f1 74 02 0f 0b 2e e8 60 20 41 1e 4c 89 e7 e8 2c 36 00 00
RSP: 0018:ffffc9000122f160 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffffea0004678600 RCX: 1ffffffff0c2c571
RDX: 0000000000000000 RSI: ffffea0004678600 RDI: ffff888102b998c0
RBP: ffffc9000122f290 R08: ffffea0004678637 R09: 1ffffd40008cf0c6
R10: 000000008bd0db90 R11: 0000000000000000 R12: ffffc9000122f5f0
R13: 1ffff92000245ebe R14: 0000000000000000 R15: ffffffff86162b88
FS:  000055555ff62380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffff1 CR3: 0000000103344000 CR4: 00000000003526b0
----------------
Code disassembly (best guess):
   0:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   7:	fc ff df
   a:	41 80 7c 05 00 00    	cmpb   $0x0,0x0(%r13,%rax,1)
  10:	74 08                	je     0x1a
  12:	4c 89 e7             	mov    %r12,%rdi
  15:	e8 d2 a8 1c 00       	call   0x1ca8ec
  1a:	49 8b 3c 24          	mov    (%r12),%rdi
  1e:	48 89 de             	mov    %rbx,%rsi
  21:	4d 89 f3             	mov    %r14,%r11
  24:	41 ba 90 db d0 8b    	mov    $0x8bd0db90,%r10d
* 2a:	45 03 53 f1          	add    -0xf(%r11),%r10d <-- trapping instruction
  2e:	74 02                	je     0x32
  30:	0f 0b                	ud2
  32:	2e e8 60 20 41 1e    	cs call 0x1e412098
  38:	4c 89 e7             	mov    %r12,%rdi
  3b:	e8 2c 36 00 00       	call   0x366c