Comment 51 for bug 1842320

#0 grub_memalign (align=1, size=592214020) at ../../../grub-core/kern/mm.c:376
#1 0x000000007dd7b074 in grub_malloc (size=592214020) at ../../../grub-core/kern/mm.c:408
#2 0x000000007dd7a2c8 in grub_verifiers_open (io=0x7bc02d80, type=131076)
    at ../../../grub-core/kern/verifiers.c:150
#3 0x000000007dd801d4 in grub_file_open (name=0x7bc02f00 "/boot/initrd.img-5.17.0-1011-oem",
    type=131076) at ../../../grub-core/kern/file.c:121
#4 0x000000007bcd5a30 in ?? ()
#5 0x000000007fe21247 in ?? ()
#6 0x000000007bc030c8 in ?? ()
#7 0x000000017fe21238 in ?? ()
#8 0x000000007bcd5320 in ?? ()
#9 0x000000007fe21250 in ?? ()
#10 0x0000000000000000 in ?? ()

...

Thus, it likely same as my assumption, grub not able to read a lager file.