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[SCSI] bnx2fc: Fix NULL pointer deref during arm_cq.
authorBhanu Prakash Gollapudi <bprakash@broadcom.com>
Fri, 5 Aug 2011 00:38:46 +0000 (17:38 -0700)
committerJames Bottomley <JBottomley@Parallels.com>
Sat, 27 Aug 2011 14:35:42 +0000 (08:35 -0600)
commitb338c785c5c945383046ff39092e3021ea5b1d95
tree548bd66957226efdd21e32eefefc222fdc593a69tree | snapshot (tar.gz zip)
parent81214013130cd24142f6465f7f5a256fed530c17commit | diff
[SCSI] bnx2fc: Fix NULL pointer deref during arm_cq.

There exists a race condition between CQ doorbell unmap and IO completion path
that arms the CQ which causes a NULL dereference. Protect the ctx_base with
cq_lock to avoid this. Also, wait for the CQ doorbell to be successfully mapped
before arming the CQ.

Also, do not count uncolicited CQ completions for free_sqes.

Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
drivers/scsi/bnx2fc/bnx2fc_hwi.c diff | blob | blame | history
drivers/scsi/bnx2fc/bnx2fc_tgt.c diff | blob | blame | history