Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
Mem abort info:
  ESR = 0x0000000086000006
  EC = 0x21: IABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x06: level 2 translation fault
user pgtable: 4k pages, 52-bit VAs, pgdp=0000000043b6ed00
[0000000000000000] pgd=0800000046541003, p4d=0800000049895003, pud=0800000045d9a003, pmd=0000000000000000
Internal error: Oops: 0000000086000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 UID: 0 PID: 9671 Comm: syz.1.2029 Tainted: G    B              6.11.0-syzkaller-08481-g88264981f208 #0
Tainted: [B]=BAD_PAGE
Hardware name: linux,dummy-virt (DT)
pstate: 61400809 (nZCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=-c)
pc : 0x0
lr : filemap_read_folio+0x44/0xf4 mm/filemap.c:2363
sp : ffff800088d0bac0
x29: ffff800088d0bac0 x28: fbf0000003f73e40 x27: 0000000020ffd000
x26: 0000000000000000 x25: 0000000000000000 x24: 0000000002100cca
x23: fbf0000009b77900 x22: 0000000000000000 x21: fbf0000009b77900
x20: 0000000000000000 x19: ffffc1ffc0bfe540 x18: ffff800088d0bc20
x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000001
x14: 0000000000000000 x13: 0000000000000003 x12: 000000000006845e
x11: 0000000000000001 x10: ffff800081f19060 x9 : 0000000000000000
x8 : fff07ffffd1f0000 x7 : fff000007f8e9d58 x6 : 0000000000000001
x5 : ffffc1ffc0bfe540 x4 : 0000000000000000 x3 : f5f0000005a036c0
x2 : 0000000000000000 x1 : ffffc1ffc0bfe540 x0 : fbf0000009b77900
Call trace:
 0x0
 do_read_cache_folio+0x18c/0x29c mm/filemap.c:3821
 read_cache_folio+0x14/0x20 mm/filemap.c:3853
 freader_get_folio+0x1a8/0x1f8 lib/buildid.c:72
 freader_fetch+0x44/0x164 lib/buildid.c:115
 __build_id_parse.isra.0+0x98/0x2a8 lib/buildid.c:300
 build_id_parse+0x18/0x24 lib/buildid.c:354
 do_procmap_query+0x670/0x7a0 fs/proc/task_mmu.c:534
 procfs_procmap_ioctl+0x2c/0x44 fs/proc/task_mmu.c:613
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl fs/ioctl.c:893 [inline]
 __arm64_sys_ioctl+0xac/0xf0 fs/ioctl.c:893
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x48/0x110 arch/arm64/kernel/syscall.c:49
 el0_svc_common.constprop.0+0x40/0xe0 arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x1c/0x28 arch/arm64/kernel/syscall.c:151
 el0_svc+0x34/0xec arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x100/0x12c arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x19c/0x1a0 arch/arm64/kernel/entry.S:598
Code: ???????? ???????? ???????? ???????? (????????) 
---[ end trace 0000000000000000 ]---