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bnx2fc: do not scan uninitialized lists in case of error.

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In case of of error, the bnx2fc_cmd_mgr_alloc() function will call
the bnx2fc_cmd_mgr_free() to perform the cleanup.
The problem is that in one case the latter may try to scan
some not-yet initialized lists, resulting in a kernel panic.

This patch prevents this from happening by freeing the lists
before calling bnx2fc_cmd_mgr_free().

Signed-off-by: Maurizio Lombardi <[email protected]>
Acked-by: Eddie Wai <[email protected]>
Signed-off-by: Christoph Hellwig <[email protected]>
This commit is contained in:
Maurizio Lombardi 2014-06-19 15:05:00 +02:00 • committed by Christoph Hellwig
commit 9172b763a7
1 changed files with 2 additions and 0 deletions
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2
drivers/scsi/bnx2fc/bnx2fc_io.c
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@ -282,6 +282,8 @@ struct bnx2fc_cmd_mgr *bnx2fc_cmd_mgr_alloc(struct bnx2fc_hba *hba)
arr_sz, GFP_KERNEL);
if (!cmgr->free_list_lock) {
printk(KERN_ERR PFX "failed to alloc free_list_lock\n");
kfree(cmgr->free_list);
cmgr->free_list = NULL;
goto mem_err;
}