kernel/git/stable/linux.git/drivers/scsi/mpi3mr, branch linux-7.2.y

scsi: mpi3mr: Fix potential deadlock in mpi3mr_fault_uevent_emit

2026-07-29T02:05:42+00:00

mpi3mr_fault_uevent_emit() runs from the fault watchdog and reset paths where host I/O may already be blocked. GFP_KERNEL allocations here, both the local kzalloc_obj() and the ones inside kobject_uevent_env() itself, can trigger reclaim that waits on that blocked I/O and deadlock. Use memalloc_noio_save()/restore() to cover the whole call instead of just the local allocation. Fixes: ec54b348f274 ("scsi: mpi3mr: Record and report controller firmware faults") Reported-by: sashiko-bot Closes: https://sashiko.dev/#/patchset/20260724164630.924288-1-chandrakanth.patil%40broadcom.com Signed-off-by: Chandrakanth Patil Link: https://patch.msgid.link/20260724175231.935192-1-chandrakanth.patil@broadcom.com Signed-off-by: Martin K. Petersen

scsi: mpi3mr: Fix typo

2026-04-09T02:26:30+00:00

Fix typo in "synchronize". Signed-off-by: Claudiu Beznea Link: https://patch.msgid.link/20260403133109.2744351-1-claudiu.beznea.uj@bp.renesas.com Signed-off-by: Martin K. Petersen

Merge branch 7.0/scsi-fixes into 7.1/scsi-staging

2026-04-03T00:31:22+00:00

Pull in fixes to resolve mpi3mr merge conflict. Signed-off-by: Martin K. Petersen

scsi: mpi3mr: Add retry mechanism for IOC shutdown with timeout reset

2026-03-27T21:09:01+00:00

Enhance the IOC shutdown process to handle transient failures during controller cleanup. Add retry logic with configurable maximum retry count (MPI3MR_MAX_SHUTDOWN_RETRY_COUNT) and proper timeout management that resets on each retry attempt. This ensures shutdown can recover from temporary issues without failing completely. Signed-off-by: Ranjan Kumar Link: https://patch.msgid.link/20260320090326.47544-4-ranjan.kumar@broadcom.com Signed-off-by: Martin K. Petersen

scsi: mpi3mr: Add queue-full tracking for operational request queues

2026-03-27T21:09:01+00:00

Track queue-full conditions on operational request queues in the driver. Record the last host tag returned to the SCSI mid-layer and count I/Os affected by queue-full conditions. Signed-off-by: Ranjan Kumar Link: https://patch.msgid.link/20260320090326.47544-3-ranjan.kumar@broadcom.com Signed-off-by: Martin K. Petersen

scsi: mpi3mr: Reset controller on invalid I/O completion

2026-03-27T21:07:35+00:00

Operational replies without a valid scsi_cmnd indicate an invalid I/O completion and a potentially inconsistent controller state. Track this condition and allow the watchdog to trigger a soft reset to safely recover. Signed-off-by: Ranjan Kumar Link: https://patch.msgid.link/20260320090326.47544-2-ranjan.kumar@broadcom.com Signed-off-by: Martin K. Petersen

scsi: mpi3mr: Clear reset history on ready and recheck state after timeout

2026-02-28T22:40:25+00:00

The driver retains reset history even after the IOC has successfully reached the READY state. That leaves stale reset information active during normal operation and can mislead recovery and diagnostics. In addition, if the IOC becomes READY just as the ready timeout loop exits, the driver still follows the failure path and may retry or report failure incorrectly. Clear reset history once READY is confirmed so driver state matches actual IOC status. After the timeout loop, recheck the IOC state and treat READY as success instead of failing. Signed-off-by: Ranjan Kumar Link: https://patch.msgid.link/20260225082622.82588-1-ranjan.kumar@broadcom.com Signed-off-by: Martin K. Petersen

Merge branch '7.0/scsi-queue' into 7.0/scsi-fixes

2026-02-23T18:39:58+00:00

Pull in remaining fixes from 7.0/scsi-queue. Signed-off-by: Martin K. Petersen

Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses

2026-02-22T16:26:33+00:00

Conversion performed via this Coccinelle script: // SPDX-License-Identifier: GPL-2.0-only // Options: --include-headers-for-types --all-includes --include-headers --keep-comments virtual patch @gfp depends on patch && !(file in "tools") && !(file in "samples")@ identifier ALLOC = {kmalloc_obj,kmalloc_objs,kmalloc_flex, kzalloc_obj,kzalloc_objs,kzalloc_flex, kvmalloc_obj,kvmalloc_objs,kvmalloc_flex, kvzalloc_obj,kvzalloc_objs,kvzalloc_flex}; @@ ALLOC(... - , GFP_KERNEL ) $ make coccicheck MODE=patch COCCI=gfp.cocci Build and boot tested x86_64 with Fedora 42's GCC and Clang: Linux version 6.19.0+ (user@host) (gcc (GCC) 15.2.1 20260123 (Red Hat 15.2.1-7), GNU ld version 2.44-12.fc42) #1 SMP PREEMPT_DYNAMIC 1970-01-01 Linux version 6.19.0+ (user@host) (clang version 20.1.8 (Fedora 20.1.8-4.fc42), LLD 20.1.8) #1 SMP PREEMPT_DYNAMIC 1970-01-01 Signed-off-by: Kees Cook Signed-off-by: Linus Torvalds

Convert more 'alloc_obj' cases to default GFP_KERNEL arguments

2026-02-22T04:03:00+00:00

This converts some of the visually simpler cases that have been split over multiple lines. I only did the ones that are easy to verify the resulting diff by having just that final GFP_KERNEL argument on the next line. Somebody should probably do a proper coccinelle script for this, but for me the trivial script actually resulted in an assertion failure in the middle of the script. I probably had made it a bit _too_ trivial. So after fighting that far a while I decided to just do some of the syntactically simpler cases with variations of the previous 'sed' scripts. The more syntactically complex multi-line cases would mostly really want whitespace cleanup anyway. Signed-off-by: Linus Torvalds