BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 800000007f302067 P4D 800000007f302067 PUD 7b1d8067 PMD 0 
Oops: Oops: 0010 [#1] PREEMPT SMP KASAN PTI
CPU: 0 UID: 0 PID: 9678 Comm: syz.0.903 Not tainted 6.12.0-rc6-syzkaller-00225-g50643bbc9eb6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0018:ffffc9000348f8d8 EFLAGS: 00010283
RAX: ffffffff81cdcebc RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc9000c811000 RSI: ffffea000173dc80 RDI: ffff888029c55880
RBP: ffffc9000348f990 R08: ffffffff81cdce86 R09: 1ffffd40002e7b90
R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffffd40002e7b90
R13: ffffea000173dc80 R14: ffffc9000348f920 R15: 1ffffd40002e7b91
FS:  00007fee9d7f66c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 0000000061782000 CR4: 00000000003526f0
DR0: 0000000000000621 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 filemap_read_folio+0x14b/0x630 mm/filemap.c:2367
 do_read_cache_folio+0x3f5/0x850 mm/filemap.c:3825
 freader_get_folio+0x57a/0xb50 lib/buildid.c:77
 freader_fetch+0x9d/0x650 lib/buildid.c:120
 __build_id_parse+0x188/0x8a0 lib/buildid.c:305
 do_procmap_query fs/proc/task_mmu.c:534 [inline]
 procfs_procmap_ioctl+0xcf5/0x1600 fs/proc/task_mmu.c:613
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fee9f37e719
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:00007fee9d7f6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fee9f536058 RCX: 00007fee9f37e719
RDX: 0000000020000180 RSI: 00000000c0686611 RDI: 000000000000000b
RBP: 00007fee9f3f139e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fee9f536058 R15: 00007fff98bcafa8
 </TASK>
Modules linked in:
CR2: 0000000000000000
---[ end trace 0000000000000000 ]---
RIP: 0010:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0018:ffffc9000348f8d8 EFLAGS: 00010283
RAX: ffffffff81cdcebc RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc9000c811000 RSI: ffffea000173dc80 RDI: ffff888029c55880
RBP: ffffc9000348f990 R08: ffffffff81cdce86 R09: 1ffffd40002e7b90
R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffffd40002e7b90
R13: ffffea000173dc80 R14: ffffc9000348f920 R15: 1ffffd40002e7b91
FS:  00007fee9d7f66c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 0000000061782000 CR4: 00000000003526f0
DR0: 0000000000000621 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400