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| author |   Johannes Thumshirn <jthumshirn@suse.de> | 2018-07-31 15:46:02 +0200 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2018-08-02 15:30:03 -0400 |
| commit | 63d0e3dffda311e77b9a8c500d59084e960a824a (patch) | |
| tree | 555f19cde2682ff3575068eb34c68cefe5b06782 /drivers/scsi/fcoe | |
| parent | scsi: fcoe: fix use-after-free in fcoe_ctlr_els_send (diff) | |
| download | linux-dev-63d0e3dffda311e77b9a8c500d59084e960a824a.tar.xz linux-dev-63d0e3dffda311e77b9a8c500d59084e960a824a.zip | |
scsi: fcoe: drop frames in ELS LOGO error path
Drop the frames in the ELS LOGO error path instead of just returning an
error.
This fixes the following kmemleak report:
unreferenced object 0xffff880064cb1000 (size 424):
comm "kworker/0:2", pid 24, jiffies 4294904293 (age 68.504s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<(____ptrval____)>] _fc_frame_alloc+0x2c/0x180 [libfc]
[<(____ptrval____)>] fc_lport_enter_logo+0x106/0x360 [libfc]
[<(____ptrval____)>] fc_fabric_logoff+0x8c/0xc0 [libfc]
[<(____ptrval____)>] fcoe_if_destroy+0x79/0x3b0 [fcoe]
[<(____ptrval____)>] fcoe_destroy_work+0xd2/0x170 [fcoe]
[<(____ptrval____)>] process_one_work+0x7ff/0x1420
[<(____ptrval____)>] worker_thread+0x87/0xef0
[<(____ptrval____)>] kthread+0x2db/0x390
[<(____ptrval____)>] ret_from_fork+0x35/0x40
[<(____ptrval____)>] 0xffffffffffffffff
which can be triggered by issuing
echo eth0 > /sys/bus/fcoe/ctlr_destroy
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/fcoe')
| -rw-r--r-- | drivers/scsi/fcoe/fcoe_ctlr.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/scsi/fcoe/fcoe_ctlr.c b/drivers/scsi/fcoe/fcoe_ctlr.c index ceb35ebbeb8f..ffec695e0bfb 100644 --- a/drivers/scsi/fcoe/fcoe_ctlr.c +++ b/drivers/scsi/fcoe/fcoe_ctlr.c @@ -754,9 +754,9 @@ int fcoe_ctlr_els_send(struct fcoe_ctlr *fip, struct fc_lport *lport, case ELS_LOGO: if (fip->mode == FIP_MODE_VN2VN) { if (fip->state != FIP_ST_VNMP_UP) - return -EINVAL; + goto drop; if (ntoh24(fh->fh_d_id) == FC_FID_FLOGI) - return -EINVAL; + goto drop; } else { if (fip->state != FIP_ST_ENABLED) return 0; |