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Avoid dangling pointer dereferences by resetting ioctx->scmnd in srpt_on_free_cmd().

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git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1371 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Bart Van Assche
2009-11-30 09:51:17 +00:00
parent 7cdcbc8c69
commit b371630185
1 changed files with 4 additions and 3 deletions
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7
srpt/src/ib_srpt.c
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@@ -2602,13 +2602,14 @@ static void srpt_on_free_cmd(struct scst_cmd *scmnd)
ioctx = scst_cmd_get_tgt_priv(scmnd);
BUG_ON(!ioctx);
srpt_set_cmd_state(ioctx, SRPT_STATE_ABORTED);
ch = ioctx->ch;
BUG_ON(!ch);
ioctx->ch = NULL;
srpt_reset_ioctx(ch, ioctx);
scst_cmd_set_tgt_priv(scmnd, NULL);
srpt_set_cmd_state(ioctx, SRPT_STATE_ABORTED);
ioctx->scmnd = NULL;
ioctx->ch = NULL;
srpt_reset_ioctx(ch, ioctx);
}
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 20) && ! defined(BACKPORT_LINUX_WORKQUEUE_TO_2_6_19)