kernel.git/drivers/scsi/scsi_debug.c, branch linux-6.17.y

scsi: scsi_debug: Make read-only arrays static const

2025-07-31T03:26:50Z

Don't populate the read-only arrays on the stack at run time, instead make them static const. Also reduces overall size. before: text data bss dec hex filename 367439 89582 5952 462973 7107d drivers/scsi/scsi_debug.o after: text data bss dec hex filename 365847 90702 5952 462501 70ea5 drivers/scsi/scsi_debug.o (gcc 14.2.0, x86-64) Signed-off-by: Colin Ian King Link: https://lore.kernel.org/r/20250729064930.1659007-1-colin.i.king@gmail.com Reviewed-by: Bart Van Assche Signed-off-by: Martin K. Petersen

scsi: Don't use %pK through printk()

2025-06-16T18:34:21Z

In the past %pK was preferable to %p as it would not leak raw pointer values into the kernel log. Since commit ad67b74d2469 ("printk: hash addresses printed with %p") the regular %p has been improved to avoid this issue. Furthermore, restricted pointers ("%pK") were never meant to be used through printk(). They can still unintentionally leak raw pointers or acquire sleeping locks in atomic contexts. Switch to the regular pointer formatting which is safer and easier to reason about. Signed-off-by: Thomas Weißschuh Link: https://lore.kernel.org/r/20250611-restricted-pointers-scsi-v1-1-fe31bfbc4910@linutronix.de Signed-off-by: Martin K. Petersen

scsi: scsi_debug: Reduce DEF_ATOMIC_WR_MAX_LENGTH

2025-05-06T02:08:35Z

The default atomic write max length in DEF_ATOMIC_WR_MAX_LENGTH is excessively large. For 512B LBS, we would get a 4MB max, but due to block layer atomic write restrictions this is limited to 512KB. Reduce DEF_ATOMIC_WR_MAX_LENGTH to a value which would be more realistic (for a real device supporting atomic writes), 64KB. Signed-off-by: John Garry Link: https://lore.kernel.org/r/20250501100241.930071-1-john.g.garry@oracle.com Signed-off-by: Martin K. Petersen

scsi: scsi_debug: Add ERASE for tapes

2025-04-11T20:19:27Z

The command ERASE(6) for tape devices is added. Signed-off-by: Kai Mäkisara Link: https://lore.kernel.org/r/20250310155557.2872-6-Kai.Makisara@kolumbus.fi Signed-off-by: Martin K. Petersen

scsi: scsi_debug: Use scsi_device->type instead os sdebug_ptype where possible

2025-04-11T20:19:27Z

Devices of several types can be created for a single host. The module device type should be used only when the devices are created. Scsi_scan sets the device type initially to 0xff and sets the correct type based in Inquiry results. This means that Inquiry must report sdebug_ptype as long as scsi_device->type is not set (the limit 32 comes from the 5-bit length of the Peripheral Device Type in Inquiry). Signed-off-by: Kai Mäkisara Link: https://lore.kernel.org/r/20250310155557.2872-5-Kai.Makisara@kolumbus.fi Signed-off-by: Martin K. Petersen

scsi: scsi_debug: Move some tape-specific commands to separate definitions

2025-04-11T20:19:27Z

New definitions (struct opcode_info_t) are created for READ(6), WRITE(6), READ POSITION(10) for tape devices. Signed-off-by: Kai Mäkisara Link: https://lore.kernel.org/r/20250310155557.2872-4-Kai.Makisara@kolumbus.fi Signed-off-by: Martin K. Petersen

scsi: scsi_debug: Enable different command definitions for different device types

2025-04-11T20:19:27Z

Add mask field devsel to the struct opcode_info_t to enable different definitions for different device types. Add checking of device mask to command queuing and reporting of supported opcodes. Signed-off-by: Kai Mäkisara Link: https://lore.kernel.org/r/20250310155557.2872-3-Kai.Makisara@kolumbus.fi Signed-off-by: Martin K. Petersen

scsi: scsi_debug: Fix two typos in command definitions

2025-04-11T20:19:27Z

Fix two command definitions: - Flags and service action reversed in SEND DIAGNOSTIC - ATOMIC WRITE missing opcode Signed-off-by: Kai Mäkisara Link: https://lore.kernel.org/r/20250310155557.2872-2-Kai.Makisara@kolumbus.fi Signed-off-by: Martin K. Petersen

Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

2025-03-27T02:57:34Z

Pull SCSI updates from James Bottomley: "Updates to the usual drivers (scsi_debug, ufs, lpfc, st, fnic, mpi3mr, mpt3sas) and the removal of cxlflash. The only non-trivial core change is an addition to unit attention handling to recognize UAs for power on/reset and new media so the tape driver can use it" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (107 commits) scsi: st: Tighten the page format heuristics with MODE SELECT scsi: st: ERASE does not change tape location scsi: st: Fix array overflow in st_setup() scsi: target: tcm_loop: Fix wrong abort tag scsi: lpfc: Restore clearing of NLP_UNREG_INP in ndlp->nlp_flag scsi: hisi_sas: Fixed failure to issue vendor specific commands scsi: fnic: Remove unnecessary NUL-terminations scsi: fnic: Remove redundant flush_workqueue() calls scsi: core: Use a switch statement when attaching VPD pages scsi: ufs: renesas: Add initialization code for R-Car S4-8 ES1.2 scsi: ufs: renesas: Add reusable functions scsi: ufs: renesas: Refactor 0x10ad/0x10af PHY settings scsi: ufs: renesas: Remove register control helper function scsi: ufs: renesas: Add register read to remove save/set/restore scsi: ufs: renesas: Replace init data by init code scsi: ufs: dt-bindings: renesas,ufs: Add calibration data scsi: mpi3mr: Task Abort EH Support scsi: storvsc: Don't report the host packet status as the hv status scsi: isci: Make most module parameters static scsi: megaraid_sas: Make most module parameters static ...

scsi: scsi_debug: Fix uninitialized variable use

2025-03-03T02:07:58Z

It appears that a typo has made it into the newly added code drivers/scsi/scsi_debug.c:3035:3: error: variable 'len' is uninitialized when used here [-Werror,-Wuninitialized] 3035 | len += resp_compression_m_pg(ap, pcontrol, target, devip->tape_dce); | ^~~ Replace the '+=' with the intended '=' here. Fixes: 568354b24c7d ("scsi: scsi_debug: Add compression mode page for tapes") Acked-by: Kai Mäkisara Signed-off-by: Arnd Bergmann Link: https://lore.kernel.org/r/20250225095651.2636811-1-arnd@kernel.org Signed-off-by: Martin K. Petersen