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| author | Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> | 2009-01-06 14:41:11 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-06 15:59:14 -0800 |
| commit | 350eaf791bebccb9ad5999351f3e328319545f03 (patch) | |
| tree | 7a9b18b1c2ab34cf62ae5862fbf1cc629ed383fa /fs/exec.c | |
| parent | 26e5438e4b77f04a51870f9415ffed68004fac1d (diff) | |
| download | lwn-350eaf791bebccb9ad5999351f3e328319545f03.tar.gz lwn-350eaf791bebccb9ad5999351f3e328319545f03.zip | |
do_coredump(): check return from argv_split()
do_coredump() accesses helper_argv[0] without checking helper_argv !=
NULL. This can happen if page allocation failed.
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/exec.c')
| -rw-r--r-- | fs/exec.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/exec.c b/fs/exec.c index 6ca4e3d22a3d..6b09d6fa4f7e 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -1770,6 +1770,11 @@ int do_coredump(long signr, int exit_code, struct pt_regs * regs) if (ispipe) { helper_argv = argv_split(GFP_KERNEL, corename+1, &helper_argc); + if (!helper_argv) { + printk(KERN_WARNING "%s failed to allocate memory\n", + __func__); + goto fail_unlock; + } /* Terminate the string before the first option */ delimit = strchr(corename, ' '); if (delimit) |