Oops: general protection fault, probably for non-canonical address 0xdffffc00000009c0: 0000 [#1] SMP KASAN PTI
KASAN: probably user-memory-access in range [0x0000000000004e00-0x0000000000004e07]
CPU: 0 UID: 0 PID: 12866 Comm: syz.0.1571 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:mem_cgroup_lruvec include/linux/memcontrol.h:720 [inline]
RIP: 0010:lru_gen_test_recent+0xee/0x320 mm/workingset.c:275
Code: 38 6e b6 ff 48 85 db 0f 84 79 01 00 00 e8 2a 6e b6 ff 49 8d bd 00 4e 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e a3 01 00 00 4d 63 b5 00 4e 00
RSP: 0018:ffffc90005107828 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff88801d2b0d40 RCX: ffffc9000d98c000
RDX: 00000000000009c0 RSI: ffffffff8207e806 RDI: 0000000000004e00
RBP: ffffc900051078c0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: ffff88801e7ca9b0 R12: ffffc900051078e0
R13: 0000000000000000 R14: ffffc900051078b0 R15: 0000000000000002
FS:  00007faab6ac16c0(0000) GS:ffff8881248fd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3141aff8 CR3: 00000000791a8000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 lru_gen_refault mm/workingset.c:296 [inline]
 workingset_refault+0x251/0xca0 mm/workingset.c:546
 filemap_add_folio+0x23d/0x610 mm/filemap.c:981
 do_read_cache_folio+0x23c/0x5c0 mm/filemap.c:4063
 freader_get_folio+0x33a/0x930 lib/buildid.c:58
 freader_fetch+0xbd/0x740 lib/buildid.c:101
 __build_id_parse.isra.0+0xdd/0x6c0 lib/buildid.c:289
 do_procmap_query+0xb0e/0x1080 fs/proc/task_mmu.c:733
 procfs_procmap_ioctl+0x9d/0xe0 fs/proc/task_mmu.c:813
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl fs/ioctl.c:583 [inline]
 __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7faab5b8f7c9
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:00007faab6ac1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007faab5de6090 RCX: 00007faab5b8f7c9
RDX: 0000200000000180 RSI: 00000000c0686611 RDI: 0000000000000003
RBP: 00007faab5c13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007faab5de6128 R14: 00007faab5de6090 R15: 00007fff0d01a268
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:mem_cgroup_lruvec include/linux/memcontrol.h:720 [inline]
RIP: 0010:lru_gen_test_recent+0xee/0x320 mm/workingset.c:275
Code: 38 6e b6 ff 48 85 db 0f 84 79 01 00 00 e8 2a 6e b6 ff 49 8d bd 00 4e 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e a3 01 00 00 4d 63 b5 00 4e 00
RSP: 0018:ffffc90005107828 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff88801d2b0d40 RCX: ffffc9000d98c000
RDX: 00000000000009c0 RSI: ffffffff8207e806 RDI: 0000000000004e00
RBP: ffffc900051078c0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: ffff88801e7ca9b0 R12: ffffc900051078e0
R13: 0000000000000000 R14: ffffc900051078b0 R15: 0000000000000002
FS:  00007faab6ac16c0(0000) GS:ffff8881248fd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007faab6ae29a0 CR3: 00000000791a8000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	38 6e b6             	cmp    %ch,-0x4a(%rsi)
   3:	ff 48 85             	decl   -0x7b(%rax)
   6:	db 0f                	fisttpl (%rdi)
   8:	84 79 01             	test   %bh,0x1(%rcx)
   b:	00 00                	add    %al,(%rax)
   d:	e8 2a 6e b6 ff       	call   0xffb66e3c
  12:	49 8d bd 00 4e 00 00 	lea    0x4e00(%r13),%rdi
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df
  23:	48 89 fa             	mov    %rdi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	0f b6 04 02          	movzbl (%rdx,%rax,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	74 08                	je     0x3a
  32:	3c 03                	cmp    $0x3,%al
  34:	0f 8e a3 01 00 00    	jle    0x1dd
  3a:	4d                   	rex.WRB
  3b:	63                   	.byte 0x63
  3c:	b5 00                	mov    $0x0,%ch
  3e:	4e                   	rex.WRX