linux/sound/core/seq/oss, branch master

ALSA: seq_oss: return full count for successful SEQ_FULLSIZE writes

2026-03-27T13:40:24Z

snd_seq_oss_write() currently returns the raw load_patch() callback result for SEQ_FULLSIZE events. That callback is documented as returning 0 on success and -errno on failure, but snd_seq_oss_write() is the file write path and should report the number of user bytes consumed on success. Some in-tree backends also return backend-specific positive values, which can still be shorter than the original write size. Return the full byte count for successful SEQ_FULLSIZE writes. Preserve negative errors and convert any nonnegative completion to the original count. Cc: stable@vger.kernel.org Signed-off-by: Cássio Gabriel Link: https://patch.msgid.link/20260324-alsa-seq-oss-fullsize-write-return-v1-1-66d448510538@gmail.com Signed-off-by: Takashi Iwai

Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses

2026-02-22T16:26:33Z

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 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51Z

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28Z

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

ALSA: seq: oss: Relax __free() variable declarations

2025-12-17T09:08:30Z

We used to have a variable declaration with __free() initialized with NULL. This was to keep the old coding style rule, but recently it's relaxed and rather recommends to follow the new rule to declare in place of use for __free() -- which avoids potential deadlocks or UAFs with nested cleanups. Although the current code has no bug, per se, let's follow the new standard and move the declaration to the place of assignment (or directly assign the allocated result) instead of NULL initializations. Fixes: 80ccbe91adab ("ALSA: seq: oss/synth: Clean up with guard and auto cleanup") Fixes: 895a46e034f9 ("ALSA: seq: oss/midi: Cleanup with guard and auto-cleanup") Signed-off-by: Takashi Iwai Link: https://patch.msgid.link/20251216140634.171890-6-tiwai@suse.de

ALSA: seq: oss: Convert to snd_seq bus probe mechanism

2025-12-14T10:08:09Z

The snd_seq bus got a dedicated probe function. Make use of that. This fixes a runtime warning about the driver needing to be converted to the bus probe method. Note that the remove callback returns void now. The actual return value was ignored before (see device_remove() in drivers/base/dd.c), so there is no problem introduced by converting `return -EINVAL` to `return`. Signed-off-by: Uwe Kleine-König Signed-off-by: Takashi Iwai Link: https://patch.msgid.link/affb5a7107e9d678ce85dc7f0b87445928cd6b94.1765283601.git.u.kleine-koenig@baylibre.com

ALSA: seq: oss/rw: Cleanup with guard

2025-08-29T09:52:36Z

Replace the manual spin lock/unlock pairs with guard() for code simplification. Only code refactoring, and no behavior change. Signed-off-by: Takashi Iwai Link: https://patch.msgid.link/20250827080520.7544-12-tiwai@suse.de

ALSA: seq: oss/synth: Clean up with guard and auto cleanup

2025-08-29T09:52:36Z

Use the auto-cleanup for the refcount management of seq_oss_synth object. The explicit call of snd_use_lock_free() is dropped by the magic __free(seq_oss_synth) attribute. Along with that, replace the manual mutex and spin locks with guard(). Only code refactoring, and no behavior change. Signed-off-by: Takashi Iwai Link: https://patch.msgid.link/20250827080520.7544-11-tiwai@suse.de

ALSA: seq: oss/midi: Cleanup with guard and auto-cleanup

2025-08-29T09:52:36Z

Use the auto-cleanup for the refcount management of seq_oss_midi object. The explicit call of snd_use_lock_free() is dropped by the magic __free(seq_oss_midi) attribute. Along with that, replace the manual mutex and spin locks with guard(). Only code refactoring, and no behavior change. Signed-off-by: Takashi Iwai Link: https://patch.msgid.link/20250827080520.7544-10-tiwai@suse.de

ALSA: seq: oss: Clean up core code with guard()

2025-08-29T09:52:36Z

Replace the manual mutex lock/unlock pairs with guard() for code simplification. Only code refactoring, and no behavior change. Signed-off-by: Takashi Iwai Link: https://patch.msgid.link/20250827080520.7544-9-tiwai@suse.de