The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-4.19.y git checkout FETCH_HEAD git cherry-pick -x e193b7955dfad68035b983a0011f4ef3590c85eb # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2023100813-tweak-designing-9e34@gregkh' --subject-prefix 'PATCH 4.19.y' HEAD^..
Possible dependencies:
e193b7955dfa ("RDMA/srp: Do not call scsi_done() from srp_abort()") 5f9ae9eecb15 ("scsi: ib_srp: Call scsi_done() directly") ad215aaea4f9 ("RDMA/srp: Make struct scsi_cmnd and struct srp_request adjacent") 7ec2e27a3aff ("RDMA/srp: Fix a recently introduced memory leak") 2b5715fc1738 ("RDMA/srp: Fix support for unpopulated and unbalanced NUMA nodes") f273ad4f8d90 ("RDMA/srp: Remove support for FMR memory registration") 87fee61c3513 ("RDMA/srp: Make the channel count configurable per target") 547ed331bbe8 ("RDMA/srp: Add parse function for maximum initiator to target IU size") a163afc88556 ("IB/core: Remove ib_sg_dma_address() and ib_sg_dma_len()") 882981f4a411 ("RDMA/srp: Add support for immediate data") 513d5647116b ("RDMA/srp: Rework handling of the maximum information unit length") 4f6d498c360c ("RDMA/srp: Move srp_rdma_ch.max_ti_iu_len declaration") 482fffc43c03 ("RDMA/srp: Handle large SCSI CDBs correctly") 3023a1e93656 ("RDMA: Start use ib_device_ops") 02a42f8e40ca ("RDMA/rdmavt: Initialize ib_device_ops struct") 521ed0d92ab0 ("RDMA/core: Introduce ib_device_ops") 9af3f5cf9d64 ("RDMA/core: Validate port number in query_pkey verb") 7eebced1bae0 ("RDMA/uverbs: Simplify ib_uverbs_ex_query_device") 9a0738575f26 ("RDMA/uverbs: Use uverbs_response() for remaining response copying") 07f05f40d956 ("RDMA/uverbs: Use uverbs_attr_bundle to pass udata for ioctl()")
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From e193b7955dfad68035b983a0011f4ef3590c85eb Mon Sep 17 00:00:00 2001 From: Bart Van Assche bvanassche@acm.org Date: Wed, 23 Aug 2023 13:57:27 -0700 Subject: [PATCH] RDMA/srp: Do not call scsi_done() from srp_abort()
After scmd_eh_abort_handler() has called the SCSI LLD eh_abort_handler callback, it performs one of the following actions: * Call scsi_queue_insert(). * Call scsi_finish_command(). * Call scsi_eh_scmd_add(). Hence, SCSI abort handlers must not call scsi_done(). Otherwise all the above actions would trigger a use-after-free. Hence remove the scsi_done() call from srp_abort(). Keep the srp_free_req() call before returning SUCCESS because we may not see the command again if SUCCESS is returned.
Cc: Bob Pearson rpearsonhpe@gmail.com Cc: Shinichiro Kawasaki shinichiro.kawasaki@wdc.com Fixes: d8536670916a ("IB/srp: Avoid having aborted requests hang") Signed-off-by: Bart Van Assche bvanassche@acm.org Link: https://lore.kernel.org/r/20230823205727.505681-1-bvanassche@acm.org Signed-off-by: Leon Romanovsky leon@kernel.org
diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c index 1574218764e0..2916e77f589b 100644 --- a/drivers/infiniband/ulp/srp/ib_srp.c +++ b/drivers/infiniband/ulp/srp/ib_srp.c @@ -2784,7 +2784,6 @@ static int srp_abort(struct scsi_cmnd *scmnd) u32 tag; u16 ch_idx; struct srp_rdma_ch *ch; - int ret;
shost_printk(KERN_ERR, target->scsi_host, "SRP abort called\n");
@@ -2798,19 +2797,14 @@ static int srp_abort(struct scsi_cmnd *scmnd) shost_printk(KERN_ERR, target->scsi_host, "Sending SRP abort for tag %#x\n", tag); if (srp_send_tsk_mgmt(ch, tag, scmnd->device->lun, - SRP_TSK_ABORT_TASK, NULL) == 0) - ret = SUCCESS; - else if (target->rport->state == SRP_RPORT_LOST) - ret = FAST_IO_FAIL; - else - ret = FAILED; - if (ret == SUCCESS) { + SRP_TSK_ABORT_TASK, NULL) == 0) { srp_free_req(ch, req, scmnd, 0); - scmnd->result = DID_ABORT << 16; - scsi_done(scmnd); + return SUCCESS; } + if (target->rport->state == SRP_RPORT_LOST) + return FAST_IO_FAIL;
- return ret; + return FAILED; }
static int srp_reset_device(struct scsi_cmnd *scmnd)