5 Jul 2012 13:59
[PATCH 1/1] arm: Fix kernel crash problem in binfmt_flat.c
Max Neklyudov <macscomp <at> gmail.com>
2012-07-05 11:59:59 GMT
2012-07-05 11:59:59 GMT
If createion of the new process is aborted due to some erros
(lack of memory in my case) kernel will crash because created process
is not terminated properly.
I just sent SIG_KILL in all such points.
Tested on my LM3S1D21 based board
Signed-off-by: Max Neklyudov <macscomp <at> gmail.com>
---
fs/binfmt_flat.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/fs/binfmt_flat.c b/fs/binfmt_flat.c
index 178cb70..79c9838 100644
--- a/fs/binfmt_flat.c
+++ b/fs/binfmt_flat.c
<at> <at> -545,6 +545,7 <at> <at> static int load_flat_file(struct linux_binprm * bprm,
textpos = vm_mmap(bprm->file, 0, text_len, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_EXECUTABLE, 0);
if (!textpos || IS_ERR_VALUE(textpos)) {
+ send_sig(SIGKILL, current, 0);
if (!textpos)
textpos = (unsigned long) -ENOMEM;
printk("Unable to mmap process text, errno %d\n", (int)-textpos);
<at> <at> -558,6 +559,7 <at> <at> static int load_flat_file(struct linux_binprm * bprm,
PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE, 0);
if (realdatastart == 0 || IS_ERR_VALUE(realdatastart)) {
+ send_sig(SIGKILL, current, 0);
if (!realdatastart)
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