# strace -o /tmp/efibootmgr.$RANDOM efibootmgr -b 0016 -B
The text file of strace output is attached.
execve("/bin/efibootmgr", ["efibootmgr", "-b", "0016", "-B"], [/* 21 vars */])
= 0
brk(0) = 0x215f000
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7f230b987000
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=155338, ...}) = 0
mmap(NULL, 155338, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f230b961000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/usr/lib/x86_64-linux-gnu/libefivar.so.0", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\300,\0\0\0\0\0\0"...,
832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=103336, ...}) = 0
mmap(NULL, 2199384, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0x7f230b550000
mprotect(0x7f230b560000, 2093056, PROT_NONE) = 0
mmap(0x7f230b75f000, 40960, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xf000) = 0x7f230b75f000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libdl.so.2", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\320\16\0\0\0\0\0\0"...,
832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=14664, ...}) = 0
mmap(NULL, 2109712, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0x7f230b34c000
mprotect(0x7f230b34f000, 2093056, PROT_NONE) = 0
mmap(0x7f230b54e000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7f230b54e000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/usr/lib/x86_64-linux-gnu/libefiboot.so.0", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\260\34\0\0\0\0\0\0"...,
832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=39232, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7f230b960000
mmap(NULL, 2134584, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0x7f230b142000
mprotect(0x7f230b14b000, 2093056, PROT_NONE) = 0
mmap(0x7f230b34a000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x8000) = 0x7f230b34a000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0P\34\2\0\0\0\0\0"...,
832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=1729984, ...}) = 0
mmap(NULL, 3836448, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0x7f230ad99000
mprotect(0x7f230af38000, 2097152, PROT_NONE) = 0
mmap(0x7f230b138000, 24576, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x19f000) = 0x7f230b138000
mmap(0x7f230b13e000, 14880, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f230b13e000
close(3) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7f230b95f000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7f230b95e000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7f230b95d000
arch_prctl(ARCH_SET_FS, 0x7f230b95e700) = 0
mprotect(0x7f230b138000, 16384, PROT_READ) = 0
mprotect(0x7f230b34a000, 4096, PROT_READ) = 0
mprotect(0x7f230b54e000, 4096, PROT_READ) = 0
mprotect(0x7f230b75f000, 4096, PROT_READ) = 0
mprotect(0x607000, 4096, PROT_READ) = 0
mprotect(0x7f230b989000, 4096, PROT_READ) = 0
munmap(0x7f230b961000, 155338) = 0
access("/sys/firmware/efi/efivars/", F_OK) = 0
statfs("/sys/firmware/efi/efivars/", {f_type="SYSFS_MAGIC", f_bsize=4096,
f_blocks=0, f_bfree=0, f_bavail=0, f_files=0, f_ffree=0, f_fsid={0, 0},
f_namelen=255, f_frsize=4096}) = 0
openat(AT_FDCWD, "/sys/firmware/efi/vars/",
O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 3
brk(0) = 0x215f000
brk(0x2188000) = 0x2188000
getdents(3, /* 189 entries */, 32768) = 13672
openat(3, "KEK-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var", O_RDONLY) = 4
read(4, 0x7ffef9cb6540, 4096) = -1 EIO (Input/output error)
close(4) = 0
openat(3, "LBOP0012-2a4dc6b7-41f5-45dd-b46f-2dd334c1cf65/raw_var", O_RDONLY) = 4
read(4, "L\0B\0O\0P\0000\0000\0001\0002\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
4096) = 2084
read(4, "", 4096) = 0
close(4) = 0
brk(0x2180000) = 0x2180000
close(3) = 0
access("/sys/firmware/efi/vars/new_var", F_OK) = 0
openat(AT_FDCWD, "/sys/firmware/efi/vars/",
O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 3
fcntl(3, F_GETFD) = 0x1 (flags FD_CLOEXEC)
fcntl(3, F_SETFD, FD_CLOEXEC) = 0
getdents(3, /* 189 entries */, 32768) = 13672
getdents(3, /* 0 entries */, 32768) = 0
close(3) = 0
open("/sys/firmware/efi/vars/Boot0000-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var",
O_RDONLY) = 3
read(3, "B\0o\0o\0t\0000\0000\0000\0000\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
4096) = 2084
read(3, "", 2012) = 0
close(3) = 0
open("/sys/firmware/efi/vars/Boot0001-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var",
O_RDONLY) = 3
read(3, "B\0o\0o\0t\0000\0000\0000\0001\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
4096) = 2084
read(3, "", 2012) = 0
close(3) = 0
open("/sys/firmware/efi/vars/Boot0002-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var",
O_RDONLY) = 3
read(3, "B\0o\0o\0t\0000\0000\0000\0002\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
4096) = 2084
read(3, "", 2012) = 0
close(3) = 0
open("/sys/firmware/efi/vars/Boot0003-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var",
O_RDONLY) = 3
read(3, "B\0o\0o\0t\0000\0000\0000\0003\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
4096) = 2084
read(3, "", 2012) = 0
close(3) = 0
open("/sys/firmware/efi/vars/Boot0004-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var",
O_RDONLY) = 3
read(3, "B\0o\0o\0t\0000\0000\0000\0004\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
4096) = 2084
read(3, "", 2012) = 0
close(3) = 0
open("/sys/firmware/efi/vars/Boot0005-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var",
O_RDONLY) = 3
read(3, "B\0o\0o\0t\0000\0000\0000\0005\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
4096) = 2084
read(3, "", 2012) = 0
close(3) = 0
open("/sys/firmware/efi/vars/Boot0006-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var",
O_RDONLY) = 3
read(3, "B\0o\0o\0t\0000\0000\0000\0006\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
4096) = 2084
read(3, "", 2012) = 0
close(3) = 0
open("/sys/firmware/efi/vars/Boot0007-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var",
O_RDONLY) = 3
read(3, "B\0o\0o\0t\0000\0000\0000\0007\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
4096) = 2084
read(3, "", 2012) = 0
close(3) = 0
open("/sys/firmware/efi/vars/Boot0008-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var",
O_RDONLY) = 3
read(3, "B\0o\0o\0t\0000\0000\0000\0008\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
4096) = 2084
read(3, "", 2012) = 0
close(3) = 0
open("/sys/firmware/efi/vars/Boot0009-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var",
O_RDONLY) = 3
read(3, "B\0o\0o\0t\0000\0000\0000\0009\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
4096) = 2084
read(3, "", 2012) = 0
close(3) = 0
open("/sys/firmware/efi/vars/Boot000A-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var",
O_RDONLY) = 3
read(3, "B\0o\0o\0t\0000\0000\0000\0A\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
4096) = 2084
read(3, "", 2012) = 0
close(3) = 0
open("/sys/firmware/efi/vars/Boot000B-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var",
O_RDONLY) = 3
read(3, "B\0o\0o\0t\0000\0000\0000\0B\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
4096) = 2084
read(3, "", 2012) = 0
close(3) = 0
open("/sys/firmware/efi/vars/Boot000C-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var",
O_RDONLY) = 3
read(3, "B\0o\0o\0t\0000\0000\0000\0C\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
4096) = 2084
read(3, "", 2012) = 0
close(3) = 0
open("/sys/firmware/efi/vars/Boot000D-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var",
O_RDONLY) = 3
read(3, "B\0o\0o\0t\0000\0000\0000\0D\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
4096) = 2084
read(3, "", 2012) = 0
close(3) = 0
open("/sys/firmware/efi/vars/Boot000E-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var",
O_RDONLY) = 3
read(3, "B\0o\0o\0t\0000\0000\0000\0E\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
4096) = 2084
read(3, "", 2012) = 0
close(3) = 0
open("/sys/firmware/efi/vars/Boot000F-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var",
O_RDONLY) = 3
read(3, "B\0o\0o\0t\0000\0000\0000\0F\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
4096) = 2084
read(3, "", 2012) = 0
close(3) = 0
open("/sys/firmware/efi/vars/Boot0010-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var",
O_RDONLY) = 3
read(3, "B\0o\0o\0t\0000\0000\0001\0000\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
4096) = 2084
read(3, "", 2012) = 0
close(3) = 0
open("/sys/firmware/efi/vars/Boot0011-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var",
O_RDONLY) = 3
read(3, "B\0o\0o\0t\0000\0000\0001\0001\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
4096) = 2084
read(3, "", 2012) = 0
close(3) = 0
open("/sys/firmware/efi/vars/Boot0012-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var",
O_RDONLY) = 3
read(3, "B\0o\0o\0t\0000\0000\0001\0002\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
4096) = 2084
read(3, "", 2012) = 0
close(3) = 0
open("/sys/firmware/efi/vars/Boot0013-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var",
O_RDONLY) = 3
read(3, "B\0o\0o\0t\0000\0000\0001\0003\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
4096) = 2084
read(3, "", 2012) = 0
close(3) = 0
open("/sys/firmware/efi/vars/Boot0014-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var",
O_RDONLY) = 3
read(3, "B\0o\0o\0t\0000\0000\0001\0004\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
4096) = 2084
read(3, "", 2012) = 0
close(3) = 0
open("/sys/firmware/efi/vars/Boot0015-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var",
O_RDONLY) = 3
read(3, "B\0o\0o\0t\0000\0000\0001\0005\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
4096) = 2084
read(3, "", 2012) = 0
close(3) = 0
open("/sys/firmware/efi/vars/Boot0016-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var",
O_RDONLY) = 3
read(3, "B\0o\0o\0t\0000\0000\0001\0006\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
4096) = 2084
read(3, "", 2012) = 0
close(3) = 0
open("/sys/firmware/efi/vars/Boot0017-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var",
O_RDONLY) = 3
read(3, "B\0o\0o\0t\0000\0000\0001\0007\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
4096) = 2084
read(3, "", 2012) = 0
close(3) = 0
open("/sys/firmware/efi/vars/Boot0016-8be4df61-93ca-11d2-aa0d-00e098032b8c/raw_var",
O_RDONLY) = 3
read(3, "B\0o\0o\0t\0000\0000\0001\0006\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
4096) = 2084
read(3, "", 2012) = 0
close(3) = 0
write(2, "efibootmgr: ", 12) = 12
write(2, "Boot entry 0016 not found", 25) = 25
write(2, "\n", 1) = 1
write(2, "efibootmgr: ", 12) = 12
write(2, "Could not delete boot variable", 30) = 30
write(2, ": ", 2) = 2
write(2, "Success\n", 8) = 8
exit_group(15) = ?
+++ exited with 15 +++
