r0 = openat$sysfs(0xffffffffffffff9c, &(0x7f0000000040)='/sys/kernel/kexec_crash_size', 0x0, 0x0)
r1 = openat$sysfs(0xffffffffffffff9c, &(0x7f0000000040)='/sys/kernel/kexec_crash_size', 0x0, 0x0)
pread64(r1, &(0x7f0000000140)=""/28, 0x1c, 0x0)
close_range(r0, 0xffffffffffffffff, 0x0)