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R. Silva" In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - gator4166.hostgator.com X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - embeddedor.com X-BWhitelist: no X-Source-IP: 83.214.222.209 X-Source-L: No X-Exim-ID: 1v1mzK-00000000TGw-10nl X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: ([192.168.1.104]) [83.214.222.209]:36200 X-Source-Auth: gustavo@embeddedor.com X-Email-Count: 3 X-Org: HG=hgshared;ORG=hostgator; X-Source-Cap: Z3V6aWRpbmU7Z3V6aWRpbmU7Z2F0b3I0MTY2Lmhvc3RnYXRvci5jb20= X-Local-Domain: yes X-CMAE-Envelope: MS4xfHxsm4psfjMq/fEXjquymuA60ZKSr0hzLEVBJu6tBKcRPyThsqNdo0Gra4VxhczDEVhat8iMOzyB+qiK0YlxrutsBjZdGK1UBfK0jglRcDRjbEWKWkLG IJudWDJrtXJsotm0oXczAO/aECwRPjy91LQP528PlTuHGda6wZxDveK7eCVxSSZ+pRH+qwMNyU1tjMTWmr0AbbDIdHlL6yRnT3lD/MbFoqmFrW/nEYuwuXvn On 9/25/25 16:18, John Meneghini wrote: > On 9/25/25 9:38 AM, Gustavo A. R. Silva wrote: >> On 9/25/25 15:07, John Meneghini wrote: >>> This reverts commit 6f4b10226b6b1e7d1ff3cdb006cf0f6da6eed71e. >>> >>> We've been testing this patch and it turns out there is a significant >>> bug here. This leaks memory and causes a driver hang. >>> >>> Link: >>> https://lore.kernel.org/linux-scsi/yq1zfajqpec.fsf@ca-mkp.ca.oracle.com/ >> >> Thanks for the report. I wonder if you have any logs or something I could >> look at to figure out what's going on. > > > We have a fix already.  Chris and Bryan figured it out. > >> Bryan, >> >> Could you please share how this patch[1] was tested? > > Bryan, please reply with bug fix patch you emailed me yesterday as an RFC patch. > > Gustavo, this patch is being tested as a part of our FPIN LI changes. To run this code you need a Brocade switch and a whole lot of hardware. > > You can see a example test plan here: https://bugzilla.kernel.org/attachment.cgi?id=308368&action=view > > I am about to submit a version 10 patch series for these changes and I will include a new/fixed version of your patch in that series. Awesome, thank you! I was in the process of writing the following (draft) patch, which is much less intrusive than the other one: diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h index cb95b7b12051..1b000709ccd8 100644 --- a/drivers/scsi/qla2xxx/qla_def.h +++ b/drivers/scsi/qla2xxx/qla_def.h @@ -4890,9 +4890,10 @@ struct purex_item { struct purex_item *pkt); atomic_t in_use; uint16_t size; - struct { - uint8_t iocb[64]; - } iocb; + union { + uint8_t min_iocb[QLA_DEFAULT_PAYLOAD_SIZE]; + DECLARE_FLEX_ARRAY(uint8_t, iocb); + }; }; #include "qla_edif.h" @@ -5101,7 +5102,6 @@ typedef struct scsi_qla_host { struct list_head head; spinlock_t lock; } purex_list; - struct purex_item default_item; struct name_list_extended gnl; /* Count of active session/fcport */ @@ -5130,6 +5130,9 @@ typedef struct scsi_qla_host { #define DPORT_DIAG_IN_PROGRESS BIT_0 #define DPORT_DIAG_CHIP_RESET_IN_PROGRESS BIT_1 uint16_t dport_status; + + /* Must be last --ends in a flexible-array member. */ + struct purex_item default_item; } scsi_qla_host_t; struct qla27xx_image_status { diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c index c4c6b5c6658c..a342e137a53a 100644 --- a/drivers/scsi/qla2xxx/qla_isr.c +++ b/drivers/scsi/qla2xxx/qla_isr.c @@ -1137,7 +1137,7 @@ static struct purex_item if (!item) return item; - memcpy(&item->iocb, pkt, sizeof(item->iocb)); + memcpy(&item->iocb, pkt, QLA_DEFAULT_PAYLOAD_SIZE); return item; } diff --git a/drivers/scsi/qla2xxx/qla_nvme.c b/drivers/scsi/qla2xxx/qla_nvme.c index 316594aa40cc..065f9bcca26f 100644 --- a/drivers/scsi/qla2xxx/qla_nvme.c +++ b/drivers/scsi/qla2xxx/qla_nvme.c @@ -1308,7 +1308,7 @@ void qla2xxx_process_purls_iocb(void **pkt, struct rsp_que **rsp) ql_dbg(ql_dbg_unsol, vha, 0x2121, "PURLS OP[%01x] size %d xchg addr 0x%x portid %06x\n", - item->iocb.iocb[3], item->size, uctx->exchange_address, + item->iocb[3], item->size, uctx->exchange_address, fcport->d_id.b24); /* +48 0 1 2 3 4 5 6 7 8 9 A B C D E F * ----- ----------------------------------------------- But if you already figured it out, that's great. :) Thanks -Gustavo > /John > >> Thanks >> -Gustavo >> >> [1] https://lore.kernel.org/linux-scsi/20250813200744.17975-10-bgurney@redhat.com/ >> >