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| author | Devendra Naga <devendra.aaru@gmail.com> | 2013-01-22 03:38:17 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-01-22 08:58:44 -0800 |
| commit | 7b63c5772fd6eea71b1332570812297e45403126 (patch) | |
| tree | e6470434c08799c1c17fc3e72a1060b2afea99e3 /drivers/staging/dgrp | |
| parent | b194218dba531b9c36080d29d10fdf9ef96a15bf (diff) | |
| download | kernel_goldelico_gta04-7b63c5772fd6eea71b1332570812297e45403126.zip kernel_goldelico_gta04-7b63c5772fd6eea71b1332570812297e45403126.tar.gz kernel_goldelico_gta04-7b63c5772fd6eea71b1332570812297e45403126.tar.bz2 | |
staging: dgrp: check for a valid proc dir entry pointer
while proc_create fails, the register_proc_table can do a derefernce of the
null pointer causing to oops the system, instead check for a valid pointer
at register and unregister
Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/dgrp')
| -rw-r--r-- | drivers/staging/dgrp/dgrp_specproc.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/staging/dgrp/dgrp_specproc.c b/drivers/staging/dgrp/dgrp_specproc.c index c214078..e09fc9c 100644 --- a/drivers/staging/dgrp/dgrp_specproc.c +++ b/drivers/staging/dgrp/dgrp_specproc.c @@ -181,13 +181,13 @@ static struct dgrp_proc_entry dgrp_dpa_table[] = { void dgrp_unregister_proc(void) { - unregister_proc_table(dgrp_table, dgrp_proc_dir_entry); net_entry_pointer = NULL; mon_entry_pointer = NULL; dpa_entry_pointer = NULL; ports_entry_pointer = NULL; if (dgrp_proc_dir_entry) { + unregister_proc_table(dgrp_table, dgrp_proc_dir_entry); remove_proc_entry(dgrp_proc_dir_entry->name, dgrp_proc_dir_entry->parent); dgrp_proc_dir_entry = NULL; @@ -231,6 +231,8 @@ static void register_proc_table(struct dgrp_proc_entry *table, if (table == NULL) return; + if (root == NULL) + return; for (; table->id; table++) { /* Can't do anything without a proc name. */ |