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| author | zhangxiliang <zhangxiliang@cn.fujitsu.com> | 2008-08-02 10:56:37 +0800 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2008-08-04 06:13:50 -0400 |
| commit | 1a61c88defcd611bd148d6c960b498e1b8bbbe00 (patch) | |
| tree | 8b8d84cb828caabd61d849967b3a6f8de6df2b66 /kernel | |
| parent | 2b12a4c524812fb3f6ee590a02e65b95c8c32229 (diff) | |
| download | linux-1a61c88defcd611bd148d6c960b498e1b8bbbe00.tar.gz linux-1a61c88defcd611bd148d6c960b498e1b8bbbe00.tar.bz2 linux-1a61c88defcd611bd148d6c960b498e1b8bbbe00.zip | |
Re: [PATCH] Fix the kernel panic of audit_filter_task when key field is set
Sorry, I miss a blank between if and "(".
And I add "unlikely" to check "ctx" in audit_match_perm() and audit_match_filetype().
This is a new patch for it.
Signed-off-by: Zhang Xiliang <zhangxiliang@cn.fujitsu.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/auditsc.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/auditsc.c b/kernel/auditsc.c index 496c3dd37276..972f8e61d36a 100644 --- a/kernel/auditsc.c +++ b/kernel/auditsc.c @@ -243,6 +243,9 @@ static inline int open_arg(int flags, int mask) static int audit_match_perm(struct audit_context *ctx, int mask) { + if (unlikely(!ctx)) + return 0; + unsigned n = ctx->major; switch (audit_classify_syscall(ctx->arch, n)) { case 0: /* native */ @@ -284,6 +287,10 @@ static int audit_match_filetype(struct audit_context *ctx, int which) { unsigned index = which & ~S_IFMT; mode_t mode = which & S_IFMT; + + if (unlikely(!ctx)) + return 0; + if (index >= ctx->name_count) return 0; if (ctx->names[index].ino == -1) |