r0 = openat$sysfs(0xffffffffffffff9c, &(0x7f0000000040)='/sys/kernel/vmcoreinfo', 0x0, 0x0)
preadv(r0, &(0x7f0000000100)=[{&(0x7f0000000000)=""/51, 0x33}], 0x1, 0x0, 0x0)