Attempting to run: cat /sys/firmware/efi/efivars/SecureBoot-8be4df61-93ca-11d2-aa0d-00e098032b8c hangs.
hexdump barfs: $ hexdump /sys/firmware/efi/efivars/SecureBoot-8be4df61-93ca-11d2-aa0d-00e098032b8c hexdump: /sys/firmware/efi/efivars/SecureBoot-8be4df61-93ca-11d2-aa0d-00e098032b8c: Interrupted system call
Trying under sudo makes no difference.
stracing that cat request results in: fstat(1, {st_mode=S_IFIFO|0600, st_size=0, ...}) = 0 openat(AT_FDCWD, "/sys/firmware/efi/efivars/SecureBoot-8be4df61-93ca-11d2-aa0d-00e098032b8c", O_RDONLY) = 3 fstat(3, {st_mode=S_IFREG|0644, st_size=5, ...}) = 0 fadvise64(3, 0, 0, POSIX_FADV_SEQUENTIAL) = 0 mmap(NULL, 139264, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd9ca513000 read(3, 0x7fd9ca514000, 131072) = -1 EINTR (Interrupted system call) read(3, 0x7fd9ca514000, 131072) = -1 EINTR (Interrupted system call) read(3, 0x7fd9ca514000, 131072) = -1 EINTR (Interrupted system call) read(3, 0x7fd9ca514000, 131072) = -1 EINTR (Interrupted system call)
With that Interrupted system call just spinning repeating over and over until I stop it.
Attempting to run: efi/efivars/ SecureBoot- 8be4df61- 93ca-11d2- aa0d-00e098032b 8c
cat /sys/firmware/
hangs.
hexdump barfs: efi/efivars/ SecureBoot- 8be4df61- 93ca-11d2- aa0d-00e098032b 8c efi/efivars/ SecureBoot- 8be4df61- 93ca-11d2- aa0d-00e098032b 8c: Interrupted system call
$ hexdump /sys/firmware/
hexdump: /sys/firmware/
Trying under sudo makes no difference.
stracing that cat request results in: S_IFIFO| 0600, st_size=0, ...}) = 0 efi/efivars/ SecureBoot- 8be4df61- 93ca-11d2- aa0d-00e098032b 8c", O_RDONLY) = 3 S_IFREG| 0644, st_size=5, ...}) = 0 SEQUENTIAL) = 0 PROT_WRITE, MAP_PRIVATE| MAP_ANONYMOUS, -1, 0) = 0x7fd9ca513000
fstat(1, {st_mode=
openat(AT_FDCWD, "/sys/firmware/
fstat(3, {st_mode=
fadvise64(3, 0, 0, POSIX_FADV_
mmap(NULL, 139264, PROT_READ|
read(3, 0x7fd9ca514000, 131072) = -1 EINTR (Interrupted system call)
read(3, 0x7fd9ca514000, 131072) = -1 EINTR (Interrupted system call)
read(3, 0x7fd9ca514000, 131072) = -1 EINTR (Interrupted system call)
read(3, 0x7fd9ca514000, 131072) = -1 EINTR (Interrupted system call)
With that Interrupted system call just spinning repeating over and over until I stop it.