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| author | Mark Rustad <mark.d.rustad@intel.com> | 2013-05-18 04:10:07 +0000 |
|---|---|---|
| committer | Robert Love <robert.w.love@intel.com> | 2013-07-09 11:18:54 -0700 |
| commit | d17efa001aacaa774581972230b1a9db1e618ded (patch) | |
| tree | 621774c7881379d470f40b04c10ebde18def9d97 /drivers | |
| parent | a2ceb1fbaa875172345f611a3d37c3662f7e5082 (diff) | |
| download | linux-d17efa001aacaa774581972230b1a9db1e618ded.tar.gz linux-d17efa001aacaa774581972230b1a9db1e618ded.tar.bz2 linux-d17efa001aacaa774581972230b1a9db1e618ded.zip | |
fcoe: Stop fc_rport_priv structure leak
When repeatedly doing rmmod and modprobe on the ixgbe
driver while FCoE is active in a VN2VN configuration,
memory leaks would be discovered by kmemleak with the
following backtrace:
unreferenced object 0xffff88003d076000 (size 1024):
comm "kworker/0:3", pid 2998, jiffies 4295436448 (age 1015.332s)
hex dump (first 32 bytes):
48 8a fe 6f 00 88 ff ff 00 00 00 00 00 00 00 00 H..o............
01 00 00 00 02 00 00 00 7b ac 87 21 1b 00 00 10 ........{..!....
backtrace:
[<ffffffff814b308b>] kmemleak_alloc+0x5b/0xc0
[<ffffffff8115c6e8>] __kmalloc+0xd8/0x1b0
[<ffffffffa0216638>] fc_rport_create+0x48/0x1f0 [libfc]
[<ffffffffa023cd86>] fcoe_ctlr_vn_add.isra.10+0x56/0x1a0 [libfcoe]
[<ffffffffa023f440>] fcoe_ctlr_vn_recv+0x8b0/0xab0 [libfcoe]
[<ffffffffa023fb06>] fcoe_ctlr_recv_work+0x4c6/0xf60 [libfcoe]
[<ffffffff81067404>] process_one_work+0x1e4/0x4d0
[<ffffffff81068def>] worker_thread+0x10f/0x380
[<ffffffff8107019a>] kthread+0xea/0xf0
[<ffffffff814d32ec>] ret_from_fork+0x7c/0xb0
[<ffffffffffffffff>] 0xffffffffffffffff
This patch stops the leak of the fc_rport_priv structure.
Signed-off-by: Mark Rustad <mark.d.rustad@intel.com>
Tested-by: Jack Morgan <jack.morgan@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/fcoe/fcoe_ctlr.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/scsi/fcoe/fcoe_ctlr.c b/drivers/scsi/fcoe/fcoe_ctlr.c index 795843dde8ec..203415e02518 100644 --- a/drivers/scsi/fcoe/fcoe_ctlr.c +++ b/drivers/scsi/fcoe/fcoe_ctlr.c @@ -2090,7 +2090,11 @@ static struct fc_rport_operations fcoe_ctlr_vn_rport_ops = { */ static void fcoe_ctlr_disc_stop_locked(struct fc_lport *lport) { + struct fc_rport_priv *rdata; + mutex_lock(&lport->disc.disc_mutex); + list_for_each_entry_rcu(rdata, &lport->disc.rports, peers) + lport->tt.rport_logoff(rdata); lport->disc.disc_callback = NULL; mutex_unlock(&lport->disc.disc_mutex); } |