selinux: drop unnecessary NULL check

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Commit e3489f8974 ("selinux: kill selinux_sb_get_mnt_opts()")
introduced a NULL check on the context after a successful call to
security_sid_to_context().  This is on the one hand redundant after
checking for success and on the other hand insufficient on an actual
NULL pointer, since the context is passed to seq_escape() leading to a
call of strlen() on it.

Reported by Clang analyzer:

    In file included from security/selinux/hooks.c:28:
    In file included from ./include/linux/tracehook.h:50:
    In file included from ./include/linux/memcontrol.h:13:
    In file included from ./include/linux/cgroup.h:18:
    ./include/linux/seq_file.h:136:25: warning: Null pointer passed as 1st argument to string length function [unix.cstring.NullArg]
            seq_escape_mem(m, src, strlen(src), flags, esc);
                                   ^~~~~~~~~~~

Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>

...

This commit is contained in:

Christian Göttsche 2022-02-17 15:21:28 +01:00 • committed by Paul Moore

parent 494688efdc

commit 4d3d0ed60e

1 changed files with 1 additions and 1 deletions

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security/selinux/hooks.c

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