This is a note to let you know that I've just added the patch titled
scsi: qla2xxx: Remove unused nvme_ls_waitq wait queue
to the 6.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
scsi-qla2xxx-remove-unused-nvme_ls_waitq-wait-queue.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 20fce500b232b970e40312a9c97e7f3b6d7a709c Mon Sep 17 00:00:00 2001
From: Manish Rangankar <mrangankar@xxxxxxxxxxx>
Date: Thu, 15 Jun 2023 13:16:33 +0530
Subject: scsi: qla2xxx: Remove unused nvme_ls_waitq wait queue
From: Manish Rangankar <mrangankar@xxxxxxxxxxx>
commit 20fce500b232b970e40312a9c97e7f3b6d7a709c upstream.
System crash when qla2x00_start_sp(sp) returns error code EGAIN and wake_up
gets called for uninitialized wait queue sp->nvme_ls_waitq.
qla2xxx [0000:37:00.1]-2121:5: Returning existing qpair of ffff8ae2c0513400 for idx=0
qla2xxx [0000:37:00.1]-700e:5: qla2x00_start_sp failed = 11
BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
PGD 0 P4D 0
Oops: 0000 [#1] SMP NOPTI
Hardware name: HPE ProLiant DL360 Gen10/ProLiant DL360 Gen10, BIOS U32 09/03/2021
Workqueue: nvme-wq nvme_fc_connect_ctrl_work [nvme_fc]
RIP: 0010:__wake_up_common+0x4c/0x190
RSP: 0018:ffff95f3e0cb7cd0 EFLAGS: 00010086
RAX: 0000000000000000 RBX: ffff8b08d3b26328 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffff8b08d3b26320
RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffffffffffe8
R10: 0000000000000000 R11: ffff95f3e0cb7a60 R12: ffff95f3e0cb7d20
R13: 0000000000000003 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8b2fdf6c0000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000002f1e410002 CR4: 00000000007706e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
PKRU: 55555554
Call Trace:
__wake_up_common_lock+0x7c/0xc0
qla_nvme_ls_req+0x355/0x4c0 [qla2xxx]
? __nvme_fc_send_ls_req+0x260/0x380 [nvme_fc]
? nvme_fc_send_ls_req.constprop.42+0x1a/0x45 [nvme_fc]
? nvme_fc_connect_ctrl_work.cold.63+0x1e3/0xa7d [nvme_fc]
Remove unused nvme_ls_waitq wait queue. nvme_ls_waitq logic was removed
previously in the commits tagged Fixed: below.
Fixes: 219d27d7147e ("scsi: qla2xxx: Fix race conditions in the code for aborting SCSI commands")
Fixes: 5621b0dd7453 ("scsi: qla2xxx: Simpify unregistration of FC-NVMe local/remote ports")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Manish Rangankar <mrangankar@xxxxxxxxxxx>
Signed-off-by: Nilesh Javali <njavali@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230615074633.12721-1-njavali@xxxxxxxxxxx
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/scsi/qla2xxx/qla_def.h | 1 -
drivers/scsi/qla2xxx/qla_nvme.c | 3 ---
2 files changed, 4 deletions(-)
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -703,7 +703,6 @@ typedef struct srb {
struct iocb_resource iores;
struct kref cmd_kref; /* need to migrate ref_count over to this */
void *priv;
- wait_queue_head_t nvme_ls_waitq;
struct fc_port *fcport;
struct scsi_qla_host *vha;
unsigned int start_timer:1;
--- a/drivers/scsi/qla2xxx/qla_nvme.c
+++ b/drivers/scsi/qla2xxx/qla_nvme.c
@@ -360,7 +360,6 @@ static int qla_nvme_ls_req(struct nvme_f
if (rval != QLA_SUCCESS) {
ql_log(ql_log_warn, vha, 0x700e,
"qla2x00_start_sp failed = %d\n", rval);
- wake_up(&sp->nvme_ls_waitq);
sp->priv = NULL;
priv->sp = NULL;
qla2x00_rel_sp(sp);
@@ -652,7 +651,6 @@ static int qla_nvme_post_cmd(struct nvme
if (!sp)
return -EBUSY;
- init_waitqueue_head(&sp->nvme_ls_waitq);
kref_init(&sp->cmd_kref);
spin_lock_init(&priv->cmd_lock);
sp->priv = priv;
@@ -671,7 +669,6 @@ static int qla_nvme_post_cmd(struct nvme
if (rval != QLA_SUCCESS) {
ql_log(ql_log_warn, vha, 0x212d,
"qla2x00_start_nvme_mq failed = %d\n", rval);
- wake_up(&sp->nvme_ls_waitq);
sp->priv = NULL;
priv->sp = NULL;
qla2xxx_rel_qpair_sp(sp->qpair, sp);
Patches currently in stable-queue which might be from mrangankar@xxxxxxxxxxx are
queue-6.4/scsi-qla2xxx-remove-unused-nvme_ls_waitq-wait-queue.patch
