December 2024 - Linux-stable-mirror

[PATCH] media: intel/ipu6: remove cpu latency qos request on error

by Stanislaw Gruszka

Fix cpu latency qos list corruption like below. It happens when we do not remove cpu latency request on error path and free corresponding memory. [ 30.634378] l7 kernel: list_add corruption. prev->next should be next (ffffffff9645e960), but was 0000000100100001. (prev=ffff8e9e877e20a8). [ 30.634388] l7 kernel: WARNING: CPU: 2 PID: 2008 at lib/list_debug.c:32 __list_add_valid_or_report+0x83/0xa0 <snip> [ 30.634640] l7 kernel: Call Trace: [ 30.634650] l7 kernel: <TASK> [ 30.634659] l7 kernel: ? __list_add_valid_or_report+0x83/0xa0 [ 30.634669] l7 kernel: ? __warn.cold+0x93/0xf6 [ 30.634678] l7 kernel: ? __list_add_valid_or_report+0x83/0xa0 [ 30.634690] l7 kernel: ? report_bug+0xff/0x140 [ 30.634702] l7 kernel: ? handle_bug+0x58/0x90 [ 30.634712] l7 kernel: ? exc_invalid_op+0x17/0x70 [ 30.634723] l7 kernel: ? asm_exc_invalid_op+0x1a/0x20 [ 30.634733] l7 kernel: ? __list_add_valid_or_report+0x83/0xa0 [ 30.634742] l7 kernel: plist_add+0xdd/0x140 [ 30.634754] l7 kernel: pm_qos_update_target+0xa0/0x1f0 [ 30.634764] l7 kernel: cpu_latency_qos_update_request+0x61/0xc0 [ 30.634773] l7 kernel: intel_dp_aux_xfer+0x4c7/0x6e0 [i915 1f824655ed04687c2b0d23dbce759fa785f6d033] Reported-by: Genes Lists <lists(a)sapience.com> Fixes: f50c4ca0a820 ("media: intel/ipu6: add the main input system driver") Cc: stable(a)vger.kernel.org Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka(a)linux.intel.com> --- drivers/media/pci/intel/ipu6/ipu6-isys.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/media/pci/intel/ipu6/ipu6-isys.c b/drivers/media/pci/intel/ipu6/ipu6-isys.c index 77f9c7319868..8df1d83a74b5 100644 --- a/drivers/media/pci/intel/ipu6/ipu6-isys.c +++ b/drivers/media/pci/intel/ipu6/ipu6-isys.c @@ -1133,6 +1133,7 @@ static int isys_probe(struct auxiliary_device *auxdev, free_fw_msg_bufs: free_fw_msg_bufs(isys); out_remove_pkg_dir_shared_buffer: + cpu_latency_qos_remove_request(&isys->pm_qos); if (!isp->secure_mode) ipu6_cpd_free_pkg_dir(adev); remove_shared_buffer: -- 2.34.1

6 months, 2 weeks

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[PATCH 6.1 v2] media: mediatek: vcodec: Handle invalid decoder vsi

by bin.lan.cn＠eng.windriver.com

From: Irui Wang <irui.wang(a)mediatek.com> [ Upstream commit 59d438f8e02ca641c58d77e1feffa000ff809e9f ] Handle an invalid decoder vsi in vpu_dec_init to ensure the decoder vsi is valid for future use. Fixes: 590577a4e525 ("[media] vcodec: mediatek: Add Mediatek V4L2 Video Decoder Driver") Signed-off-by: Irui Wang <irui.wang(a)mediatek.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno(a)collabora.com> Signed-off-by: Sebastian Fricke <sebastian.fricke(a)collabora.com> Signed-off-by: Hans Verkuil <hverkuil-cisco(a)xs4all.nl> [ Replace mtk_vdec_err with mtk_vcodec_err to make it work on 6.1 ] Signed-off-by: Bin Lan <bin.lan.cn(a)windriver.com> --- drivers/media/platform/mediatek/vcodec/vdec_vpu_if.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/media/platform/mediatek/vcodec/vdec_vpu_if.c b/drivers/media/platform/mediatek/vcodec/vdec_vpu_if.c index df309e8e9379..af3fc89b6cc5 100644 --- a/drivers/media/platform/mediatek/vcodec/vdec_vpu_if.c +++ b/drivers/media/platform/mediatek/vcodec/vdec_vpu_if.c @@ -213,6 +213,12 @@ int vpu_dec_init(struct vdec_vpu_inst *vpu) mtk_vcodec_debug(vpu, "vdec_inst=%p", vpu); err = vcodec_vpu_send_msg(vpu, (void *)&msg, sizeof(msg)); + + if (IS_ERR_OR_NULL(vpu->vsi)) { + mtk_vcodec_err(vpu, "invalid vdec vsi, status=%d", err); + return -EINVAL; + } + mtk_vcodec_debug(vpu, "- ret=%d", err); return err; } -- 2.43.0

6 months, 2 weeks

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Re: Patch "HID: bpf: Fix NKRO on Mistel MD770" has been added to the 5.4-stable tree

by Benjamin Tissoires

On Tue, Dec 10, 2024 at 11:17 PM Sasha Levin <sashal(a)kernel.org> wrote: > > This is a note to let you know that I've just added the patch titled > > HID: bpf: Fix NKRO on Mistel MD770 > > to the 5.4-stable tree which can be found at: > http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… > > The filename of the patch is: > hid-bpf-fix-nkro-on-mistel-md770.patch > and it can be found in the queue-5.4 subdirectory. > > If you, or anyone else, feels it should not be added to the stable tree, > please let <stable(a)vger.kernel.org> know about it. Please drop this patch (and in all previous releases). Again, it makes no sense to backport any files in drivers/hid/bpf/progs on kernels before 6.11, and even then, it makes very little value as they are also tracked in a different userspace project (udev-hid-bpf). FWIW, HID-BPF was introduced in v6.3, so it's even more surprising to see such a patch added here. Because the patch applied is not a guarantee that it makes sense. Plus your script is a little bit too greedy: there were no "Fixes" nor "stable" tags added... Cheers, Benjamin > > > > commit 1fbcf8b1b86db5517d82b5ff571a794e64f7098a > Author: Benjamin Tissoires <bentiss(a)kernel.org> > Date: Thu Oct 17 18:34:58 2024 +0200 > > HID: bpf: Fix NKRO on Mistel MD770 > > [ Upstream commit 9bc089307e8dff7797233308372b4a90ce8f79be ] > > Mistel MD770 keyboard (using Holtek Semiconductor, Inc. controller) has > a quirk in report descriptor in one of its interfaces (more detail in > the source file). Fix up the descriptor to allow NKRO to work again. > > Tested by loading the BPF program and confirming that 8 simultaneous > keypresses work. > > Link: https://bugzilla.kernel.org/show_bug.cgi?id=218495 > Link: https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/merge_requests/122 > Signed-off-by: Tatsuyuki Ishi <ishitatsuyuki(a)gmail.com> > Acked-by: Jiri Kosina <jkosina(a)suse.com> > Link: https://patch.msgid.link/20241017-import_bpf_6-13-v2-1-6a7acb89a97f@kernel.… > Signed-off-by: Benjamin Tissoires <bentiss(a)kernel.org> > Signed-off-by: Sasha Levin <sashal(a)kernel.org> > > diff --git a/drivers/hid/bpf/progs/Mistel__MD770.bpf.c b/drivers/hid/bpf/progs/Mistel__MD770.bpf.c > new file mode 100644 > index 0000000000000..fb8b5a6968b12 > --- /dev/null > +++ b/drivers/hid/bpf/progs/Mistel__MD770.bpf.c > @@ -0,0 +1,154 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* Copyright (c) 2024 Tatsuyuki Ishi > + */ > + > +#include "vmlinux.h" > +#include "hid_bpf.h" > +#include "hid_bpf_helpers.h" > +#include <bpf/bpf_tracing.h> > + > +#define VID_HOLTEK 0x04D9 > +#define PID_MD770 0x0339 > +#define RDESC_SIZE 203 > + > +HID_BPF_CONFIG( > + HID_DEVICE(BUS_USB, HID_GROUP_GENERIC, VID_HOLTEK, PID_MD770) > +); > + > +/* > + * The Mistel MD770 keyboard reports the first 6 simultaneous key presses > + * through the first interface, and anything beyond that through a second > + * interface. Unfortunately, the second interface's report descriptor has an > + * error, causing events to be malformed and ignored. This HID-BPF driver > + * fixes the descriptor to allow NKRO to work again. > + * > + * For reference, this is the original report descriptor: > + * > + * 0x05, 0x01, // Usage Page (Generic Desktop) 0 > + * 0x09, 0x80, // Usage (System Control) 2 > + * 0xa1, 0x01, // Collection (Application) 4 > + * 0x85, 0x01, // Report ID (1) 6 > + * 0x19, 0x81, // Usage Minimum (129) 8 > + * 0x29, 0x83, // Usage Maximum (131) 10 > + * 0x15, 0x00, // Logical Minimum (0) 12 > + * 0x25, 0x01, // Logical Maximum (1) 14 > + * 0x95, 0x03, // Report Count (3) 16 > + * 0x75, 0x01, // Report Size (1) 18 > + * 0x81, 0x02, // Input (Data,Var,Abs) 20 > + * 0x95, 0x01, // Report Count (1) 22 > + * 0x75, 0x05, // Report Size (5) 24 > + * 0x81, 0x01, // Input (Cnst,Arr,Abs) 26 > + * 0xc0, // End Collection 28 > + * 0x05, 0x0c, // Usage Page (Consumer Devices) 29 > + * 0x09, 0x01, // Usage (Consumer Control) 31 > + * 0xa1, 0x01, // Collection (Application) 33 > + * 0x85, 0x02, // Report ID (2) 35 > + * 0x15, 0x00, // Logical Minimum (0) 37 > + * 0x25, 0x01, // Logical Maximum (1) 39 > + * 0x95, 0x12, // Report Count (18) 41 > + * 0x75, 0x01, // Report Size (1) 43 > + * 0x0a, 0x83, 0x01, // Usage (AL Consumer Control Config) 45 > + * 0x0a, 0x8a, 0x01, // Usage (AL Email Reader) 48 > + * 0x0a, 0x92, 0x01, // Usage (AL Calculator) 51 > + * 0x0a, 0x94, 0x01, // Usage (AL Local Machine Browser) 54 > + * 0x09, 0xcd, // Usage (Play/Pause) 57 > + * 0x09, 0xb7, // Usage (Stop) 59 > + * 0x09, 0xb6, // Usage (Scan Previous Track) 61 > + * 0x09, 0xb5, // Usage (Scan Next Track) 63 > + * 0x09, 0xe2, // Usage (Mute) 65 > + * 0x09, 0xea, // Usage (Volume Down) 67 > + * 0x09, 0xe9, // Usage (Volume Up) 69 > + * 0x0a, 0x21, 0x02, // Usage (AC Search) 71 > + * 0x0a, 0x23, 0x02, // Usage (AC Home) 74 > + * 0x0a, 0x24, 0x02, // Usage (AC Back) 77 > + * 0x0a, 0x25, 0x02, // Usage (AC Forward) 80 > + * 0x0a, 0x26, 0x02, // Usage (AC Stop) 83 > + * 0x0a, 0x27, 0x02, // Usage (AC Refresh) 86 > + * 0x0a, 0x2a, 0x02, // Usage (AC Bookmarks) 89 > + * 0x81, 0x02, // Input (Data,Var,Abs) 92 > + * 0x95, 0x01, // Report Count (1) 94 > + * 0x75, 0x0e, // Report Size (14) 96 > + * 0x81, 0x01, // Input (Cnst,Arr,Abs) 98 > + * 0xc0, // End Collection 100 > + * 0x05, 0x01, // Usage Page (Generic Desktop) 101 > + * 0x09, 0x02, // Usage (Mouse) 103 > + * 0xa1, 0x01, // Collection (Application) 105 > + * 0x09, 0x01, // Usage (Pointer) 107 > + * 0xa1, 0x00, // Collection (Physical) 109 > + * 0x85, 0x03, // Report ID (3) 111 > + * 0x05, 0x09, // Usage Page (Button) 113 > + * 0x19, 0x01, // Usage Minimum (1) 115 > + * 0x29, 0x08, // Usage Maximum (8) 117 > + * 0x15, 0x00, // Logical Minimum (0) 119 > + * 0x25, 0x01, // Logical Maximum (1) 121 > + * 0x75, 0x01, // Report Size (1) 123 > + * 0x95, 0x08, // Report Count (8) 125 > + * 0x81, 0x02, // Input (Data,Var,Abs) 127 > + * 0x05, 0x01, // Usage Page (Generic Desktop) 129 > + * 0x09, 0x30, // Usage (X) 131 > + * 0x09, 0x31, // Usage (Y) 133 > + * 0x16, 0x01, 0x80, // Logical Minimum (-32767) 135 > + * 0x26, 0xff, 0x7f, // Logical Maximum (32767) 138 > + * 0x75, 0x10, // Report Size (16) 141 > + * 0x95, 0x02, // Report Count (2) 143 > + * 0x81, 0x06, // Input (Data,Var,Rel) 145 > + * 0x09, 0x38, // Usage (Wheel) 147 > + * 0x15, 0x81, // Logical Minimum (-127) 149 > + * 0x25, 0x7f, // Logical Maximum (127) 151 > + * 0x75, 0x08, // Report Size (8) 153 > + * 0x95, 0x01, // Report Count (1) 155 > + * 0x81, 0x06, // Input (Data,Var,Rel) 157 > + * 0x05, 0x0c, // Usage Page (Consumer Devices) 159 > + * 0x0a, 0x38, 0x02, // Usage (AC Pan) 161 > + * 0x95, 0x01, // Report Count (1) 164 > + * 0x81, 0x06, // Input (Data,Var,Rel) 166 > + * 0xc0, // End Collection 168 > + * 0xc0, // End Collection 169 > + * 0x05, 0x01, // Usage Page (Generic Desktop) 170 > + * 0x09, 0x06, // Usage (Keyboard) 172 > + * 0xa1, 0x01, // Collection (Application) 174 > + * 0x85, 0x04, // Report ID (4) 176 > + * 0x05, 0x07, // Usage Page (Keyboard) 178 > + * 0x95, 0x01, // Report Count (1) 180 > + * 0x75, 0x08, // Report Size (8) 182 > + * 0x81, 0x03, // Input (Cnst,Var,Abs) 184 > + * 0x95, 0xe8, // Report Count (232) 186 > + * 0x75, 0x01, // Report Size (1) 188 > + * 0x15, 0x00, // Logical Minimum (0) 190 > + * 0x25, 0x01, // Logical Maximum (1) 192 > + * 0x05, 0x07, // Usage Page (Keyboard) 194 > + * 0x19, 0x00, // Usage Minimum (0) 196 > + * 0x29, 0xe7, // Usage Maximum (231) 198 > + * 0x81, 0x00, // Input (Data,Arr,Abs) 200 <- change to 0x81, 0x02 (Data,Var,Abs) > + * 0xc0, // End Collection 202 > + */ > + > +SEC(HID_BPF_RDESC_FIXUP) > +int BPF_PROG(hid_rdesc_fixup_mistel_md770, struct hid_bpf_ctx *hctx) > +{ > + __u8 *data = hid_bpf_get_data(hctx, 0, HID_MAX_DESCRIPTOR_SIZE); > + > + if (!data) > + return 0; /* EPERM check */ > + > + if (data[201] == 0x00) > + data[201] = 0x02; > + > + return 0; > +} > + > +HID_BPF_OPS(mistel_md770) = { > + .hid_rdesc_fixup = (void *)hid_rdesc_fixup_mistel_md770, > +}; > + > +SEC("syscall") > +int probe(struct hid_bpf_probe_args *ctx) > +{ > + ctx->retval = ctx->rdesc_size != RDESC_SIZE; > + if (ctx->retval) > + ctx->retval = -EINVAL; > + > + return 0; > +} > + > +char _license[] SEC("license") = "GPL"; >

6 months, 2 weeks

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Re: Patch "HID: bpf: Fix NKRO on Mistel MD770" has been added to the 5.10-stable tree

by Benjamin Tissoires

On Tue, Dec 10, 2024 at 10:40 PM Sasha Levin <sashal(a)kernel.org> wrote: > > This is a note to let you know that I've just added the patch titled > > HID: bpf: Fix NKRO on Mistel MD770 > > to the 5.10-stable tree which can be found at: > http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… > > The filename of the patch is: > hid-bpf-fix-nkro-on-mistel-md770.patch > and it can be found in the queue-5.10 subdirectory. > > If you, or anyone else, feels it should not be added to the stable tree, > please let <stable(a)vger.kernel.org> know about it. > Please drop this patch (and in all previous releases). Again, it makes no sense to backport any files in drivers/hid/bpf/progs on kernels before 6.11, and even then, it makes very little value as they are also tracked in a different userspace project (udev-hid-bpf). FWIW, HID-BPF was introduced in v6.3, so it's surprising to see such a patch added here. Cheers, Benjamin > > > commit 6a88aee0a4644ce4b15bbaadb7d1f1ce2c0e0c6c > Author: Benjamin Tissoires <bentiss(a)kernel.org> > Date: Thu Oct 17 18:34:58 2024 +0200 > > HID: bpf: Fix NKRO on Mistel MD770 > > [ Upstream commit 9bc089307e8dff7797233308372b4a90ce8f79be ] > > Mistel MD770 keyboard (using Holtek Semiconductor, Inc. controller) has > a quirk in report descriptor in one of its interfaces (more detail in > the source file). Fix up the descriptor to allow NKRO to work again. > > Tested by loading the BPF program and confirming that 8 simultaneous > keypresses work. > > Link: https://bugzilla.kernel.org/show_bug.cgi?id=218495 > Link: https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/merge_requests/122 > Signed-off-by: Tatsuyuki Ishi <ishitatsuyuki(a)gmail.com> > Acked-by: Jiri Kosina <jkosina(a)suse.com> > Link: https://patch.msgid.link/20241017-import_bpf_6-13-v2-1-6a7acb89a97f@kernel.… > Signed-off-by: Benjamin Tissoires <bentiss(a)kernel.org> > Signed-off-by: Sasha Levin <sashal(a)kernel.org> > > diff --git a/drivers/hid/bpf/progs/Mistel__MD770.bpf.c b/drivers/hid/bpf/progs/Mistel__MD770.bpf.c > new file mode 100644 > index 0000000000000..fb8b5a6968b12 > --- /dev/null > +++ b/drivers/hid/bpf/progs/Mistel__MD770.bpf.c > @@ -0,0 +1,154 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* Copyright (c) 2024 Tatsuyuki Ishi > + */ > + > +#include "vmlinux.h" > +#include "hid_bpf.h" > +#include "hid_bpf_helpers.h" > +#include <bpf/bpf_tracing.h> > + > +#define VID_HOLTEK 0x04D9 > +#define PID_MD770 0x0339 > +#define RDESC_SIZE 203 > + > +HID_BPF_CONFIG( > + HID_DEVICE(BUS_USB, HID_GROUP_GENERIC, VID_HOLTEK, PID_MD770) > +); > + > +/* > + * The Mistel MD770 keyboard reports the first 6 simultaneous key presses > + * through the first interface, and anything beyond that through a second > + * interface. Unfortunately, the second interface's report descriptor has an > + * error, causing events to be malformed and ignored. This HID-BPF driver > + * fixes the descriptor to allow NKRO to work again. > + * > + * For reference, this is the original report descriptor: > + * > + * 0x05, 0x01, // Usage Page (Generic Desktop) 0 > + * 0x09, 0x80, // Usage (System Control) 2 > + * 0xa1, 0x01, // Collection (Application) 4 > + * 0x85, 0x01, // Report ID (1) 6 > + * 0x19, 0x81, // Usage Minimum (129) 8 > + * 0x29, 0x83, // Usage Maximum (131) 10 > + * 0x15, 0x00, // Logical Minimum (0) 12 > + * 0x25, 0x01, // Logical Maximum (1) 14 > + * 0x95, 0x03, // Report Count (3) 16 > + * 0x75, 0x01, // Report Size (1) 18 > + * 0x81, 0x02, // Input (Data,Var,Abs) 20 > + * 0x95, 0x01, // Report Count (1) 22 > + * 0x75, 0x05, // Report Size (5) 24 > + * 0x81, 0x01, // Input (Cnst,Arr,Abs) 26 > + * 0xc0, // End Collection 28 > + * 0x05, 0x0c, // Usage Page (Consumer Devices) 29 > + * 0x09, 0x01, // Usage (Consumer Control) 31 > + * 0xa1, 0x01, // Collection (Application) 33 > + * 0x85, 0x02, // Report ID (2) 35 > + * 0x15, 0x00, // Logical Minimum (0) 37 > + * 0x25, 0x01, // Logical Maximum (1) 39 > + * 0x95, 0x12, // Report Count (18) 41 > + * 0x75, 0x01, // Report Size (1) 43 > + * 0x0a, 0x83, 0x01, // Usage (AL Consumer Control Config) 45 > + * 0x0a, 0x8a, 0x01, // Usage (AL Email Reader) 48 > + * 0x0a, 0x92, 0x01, // Usage (AL Calculator) 51 > + * 0x0a, 0x94, 0x01, // Usage (AL Local Machine Browser) 54 > + * 0x09, 0xcd, // Usage (Play/Pause) 57 > + * 0x09, 0xb7, // Usage (Stop) 59 > + * 0x09, 0xb6, // Usage (Scan Previous Track) 61 > + * 0x09, 0xb5, // Usage (Scan Next Track) 63 > + * 0x09, 0xe2, // Usage (Mute) 65 > + * 0x09, 0xea, // Usage (Volume Down) 67 > + * 0x09, 0xe9, // Usage (Volume Up) 69 > + * 0x0a, 0x21, 0x02, // Usage (AC Search) 71 > + * 0x0a, 0x23, 0x02, // Usage (AC Home) 74 > + * 0x0a, 0x24, 0x02, // Usage (AC Back) 77 > + * 0x0a, 0x25, 0x02, // Usage (AC Forward) 80 > + * 0x0a, 0x26, 0x02, // Usage (AC Stop) 83 > + * 0x0a, 0x27, 0x02, // Usage (AC Refresh) 86 > + * 0x0a, 0x2a, 0x02, // Usage (AC Bookmarks) 89 > + * 0x81, 0x02, // Input (Data,Var,Abs) 92 > + * 0x95, 0x01, // Report Count (1) 94 > + * 0x75, 0x0e, // Report Size (14) 96 > + * 0x81, 0x01, // Input (Cnst,Arr,Abs) 98 > + * 0xc0, // End Collection 100 > + * 0x05, 0x01, // Usage Page (Generic Desktop) 101 > + * 0x09, 0x02, // Usage (Mouse) 103 > + * 0xa1, 0x01, // Collection (Application) 105 > + * 0x09, 0x01, // Usage (Pointer) 107 > + * 0xa1, 0x00, // Collection (Physical) 109 > + * 0x85, 0x03, // Report ID (3) 111 > + * 0x05, 0x09, // Usage Page (Button) 113 > + * 0x19, 0x01, // Usage Minimum (1) 115 > + * 0x29, 0x08, // Usage Maximum (8) 117 > + * 0x15, 0x00, // Logical Minimum (0) 119 > + * 0x25, 0x01, // Logical Maximum (1) 121 > + * 0x75, 0x01, // Report Size (1) 123 > + * 0x95, 0x08, // Report Count (8) 125 > + * 0x81, 0x02, // Input (Data,Var,Abs) 127 > + * 0x05, 0x01, // Usage Page (Generic Desktop) 129 > + * 0x09, 0x30, // Usage (X) 131 > + * 0x09, 0x31, // Usage (Y) 133 > + * 0x16, 0x01, 0x80, // Logical Minimum (-32767) 135 > + * 0x26, 0xff, 0x7f, // Logical Maximum (32767) 138 > + * 0x75, 0x10, // Report Size (16) 141 > + * 0x95, 0x02, // Report Count (2) 143 > + * 0x81, 0x06, // Input (Data,Var,Rel) 145 > + * 0x09, 0x38, // Usage (Wheel) 147 > + * 0x15, 0x81, // Logical Minimum (-127) 149 > + * 0x25, 0x7f, // Logical Maximum (127) 151 > + * 0x75, 0x08, // Report Size (8) 153 > + * 0x95, 0x01, // Report Count (1) 155 > + * 0x81, 0x06, // Input (Data,Var,Rel) 157 > + * 0x05, 0x0c, // Usage Page (Consumer Devices) 159 > + * 0x0a, 0x38, 0x02, // Usage (AC Pan) 161 > + * 0x95, 0x01, // Report Count (1) 164 > + * 0x81, 0x06, // Input (Data,Var,Rel) 166 > + * 0xc0, // End Collection 168 > + * 0xc0, // End Collection 169 > + * 0x05, 0x01, // Usage Page (Generic Desktop) 170 > + * 0x09, 0x06, // Usage (Keyboard) 172 > + * 0xa1, 0x01, // Collection (Application) 174 > + * 0x85, 0x04, // Report ID (4) 176 > + * 0x05, 0x07, // Usage Page (Keyboard) 178 > + * 0x95, 0x01, // Report Count (1) 180 > + * 0x75, 0x08, // Report Size (8) 182 > + * 0x81, 0x03, // Input (Cnst,Var,Abs) 184 > + * 0x95, 0xe8, // Report Count (232) 186 > + * 0x75, 0x01, // Report Size (1) 188 > + * 0x15, 0x00, // Logical Minimum (0) 190 > + * 0x25, 0x01, // Logical Maximum (1) 192 > + * 0x05, 0x07, // Usage Page (Keyboard) 194 > + * 0x19, 0x00, // Usage Minimum (0) 196 > + * 0x29, 0xe7, // Usage Maximum (231) 198 > + * 0x81, 0x00, // Input (Data,Arr,Abs) 200 <- change to 0x81, 0x02 (Data,Var,Abs) > + * 0xc0, // End Collection 202 > + */ > + > +SEC(HID_BPF_RDESC_FIXUP) > +int BPF_PROG(hid_rdesc_fixup_mistel_md770, struct hid_bpf_ctx *hctx) > +{ > + __u8 *data = hid_bpf_get_data(hctx, 0, HID_MAX_DESCRIPTOR_SIZE); > + > + if (!data) > + return 0; /* EPERM check */ > + > + if (data[201] == 0x00) > + data[201] = 0x02; > + > + return 0; > +} > + > +HID_BPF_OPS(mistel_md770) = { > + .hid_rdesc_fixup = (void *)hid_rdesc_fixup_mistel_md770, > +}; > + > +SEC("syscall") > +int probe(struct hid_bpf_probe_args *ctx) > +{ > + ctx->retval = ctx->rdesc_size != RDESC_SIZE; > + if (ctx->retval) > + ctx->retval = -EINVAL; > + > + return 0; > +} > + > +char _license[] SEC("license") = "GPL"; >

6 months, 2 weeks

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Re: Patch "HID: bpf: Fix NKRO on Mistel MD770" has been added to the 5.15-stable tree

by Benjamin Tissoires

On Tue, Dec 10, 2024 at 10:36 PM Sasha Levin <sashal(a)kernel.org> wrote: > > This is a note to let you know that I've just added the patch titled > > HID: bpf: Fix NKRO on Mistel MD770 > > to the 5.15-stable tree which can be found at: > http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… > > The filename of the patch is: > hid-bpf-fix-nkro-on-mistel-md770.patch > and it can be found in the queue-5.15 subdirectory. > > If you, or anyone else, feels it should not be added to the stable tree, > please let <stable(a)vger.kernel.org> know about it. Please drop this patch (and in all previous releases). Again, it makes no sense to backport any files in drivers/hid/bpf/progs on kernels before 6.11, and even then, it makes very little value as they are also tracked in a different userspace project (udev-hid-bpf). FWIW, HID-BPF was introduced in v6.3, so it's even more surprisingly surprising to see such a patch added here. Cheers, Benjamin > > > > commit cd9ab7edb94431f02c68383c089dc12fbbe00475 > Author: Benjamin Tissoires <bentiss(a)kernel.org> > Date: Thu Oct 17 18:34:58 2024 +0200 > > HID: bpf: Fix NKRO on Mistel MD770 > > [ Upstream commit 9bc089307e8dff7797233308372b4a90ce8f79be ] > > Mistel MD770 keyboard (using Holtek Semiconductor, Inc. controller) has > a quirk in report descriptor in one of its interfaces (more detail in > the source file). Fix up the descriptor to allow NKRO to work again. > > Tested by loading the BPF program and confirming that 8 simultaneous > keypresses work. > > Link: https://bugzilla.kernel.org/show_bug.cgi?id=218495 > Link: https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/merge_requests/122 > Signed-off-by: Tatsuyuki Ishi <ishitatsuyuki(a)gmail.com> > Acked-by: Jiri Kosina <jkosina(a)suse.com> > Link: https://patch.msgid.link/20241017-import_bpf_6-13-v2-1-6a7acb89a97f@kernel.… > Signed-off-by: Benjamin Tissoires <bentiss(a)kernel.org> > Signed-off-by: Sasha Levin <sashal(a)kernel.org> > > diff --git a/drivers/hid/bpf/progs/Mistel__MD770.bpf.c b/drivers/hid/bpf/progs/Mistel__MD770.bpf.c > new file mode 100644 > index 0000000000000..fb8b5a6968b12 > --- /dev/null > +++ b/drivers/hid/bpf/progs/Mistel__MD770.bpf.c > @@ -0,0 +1,154 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* Copyright (c) 2024 Tatsuyuki Ishi > + */ > + > +#include "vmlinux.h" > +#include "hid_bpf.h" > +#include "hid_bpf_helpers.h" > +#include <bpf/bpf_tracing.h> > + > +#define VID_HOLTEK 0x04D9 > +#define PID_MD770 0x0339 > +#define RDESC_SIZE 203 > + > +HID_BPF_CONFIG( > + HID_DEVICE(BUS_USB, HID_GROUP_GENERIC, VID_HOLTEK, PID_MD770) > +); > + > +/* > + * The Mistel MD770 keyboard reports the first 6 simultaneous key presses > + * through the first interface, and anything beyond that through a second > + * interface. Unfortunately, the second interface's report descriptor has an > + * error, causing events to be malformed and ignored. This HID-BPF driver > + * fixes the descriptor to allow NKRO to work again. > + * > + * For reference, this is the original report descriptor: > + * > + * 0x05, 0x01, // Usage Page (Generic Desktop) 0 > + * 0x09, 0x80, // Usage (System Control) 2 > + * 0xa1, 0x01, // Collection (Application) 4 > + * 0x85, 0x01, // Report ID (1) 6 > + * 0x19, 0x81, // Usage Minimum (129) 8 > + * 0x29, 0x83, // Usage Maximum (131) 10 > + * 0x15, 0x00, // Logical Minimum (0) 12 > + * 0x25, 0x01, // Logical Maximum (1) 14 > + * 0x95, 0x03, // Report Count (3) 16 > + * 0x75, 0x01, // Report Size (1) 18 > + * 0x81, 0x02, // Input (Data,Var,Abs) 20 > + * 0x95, 0x01, // Report Count (1) 22 > + * 0x75, 0x05, // Report Size (5) 24 > + * 0x81, 0x01, // Input (Cnst,Arr,Abs) 26 > + * 0xc0, // End Collection 28 > + * 0x05, 0x0c, // Usage Page (Consumer Devices) 29 > + * 0x09, 0x01, // Usage (Consumer Control) 31 > + * 0xa1, 0x01, // Collection (Application) 33 > + * 0x85, 0x02, // Report ID (2) 35 > + * 0x15, 0x00, // Logical Minimum (0) 37 > + * 0x25, 0x01, // Logical Maximum (1) 39 > + * 0x95, 0x12, // Report Count (18) 41 > + * 0x75, 0x01, // Report Size (1) 43 > + * 0x0a, 0x83, 0x01, // Usage (AL Consumer Control Config) 45 > + * 0x0a, 0x8a, 0x01, // Usage (AL Email Reader) 48 > + * 0x0a, 0x92, 0x01, // Usage (AL Calculator) 51 > + * 0x0a, 0x94, 0x01, // Usage (AL Local Machine Browser) 54 > + * 0x09, 0xcd, // Usage (Play/Pause) 57 > + * 0x09, 0xb7, // Usage (Stop) 59 > + * 0x09, 0xb6, // Usage (Scan Previous Track) 61 > + * 0x09, 0xb5, // Usage (Scan Next Track) 63 > + * 0x09, 0xe2, // Usage (Mute) 65 > + * 0x09, 0xea, // Usage (Volume Down) 67 > + * 0x09, 0xe9, // Usage (Volume Up) 69 > + * 0x0a, 0x21, 0x02, // Usage (AC Search) 71 > + * 0x0a, 0x23, 0x02, // Usage (AC Home) 74 > + * 0x0a, 0x24, 0x02, // Usage (AC Back) 77 > + * 0x0a, 0x25, 0x02, // Usage (AC Forward) 80 > + * 0x0a, 0x26, 0x02, // Usage (AC Stop) 83 > + * 0x0a, 0x27, 0x02, // Usage (AC Refresh) 86 > + * 0x0a, 0x2a, 0x02, // Usage (AC Bookmarks) 89 > + * 0x81, 0x02, // Input (Data,Var,Abs) 92 > + * 0x95, 0x01, // Report Count (1) 94 > + * 0x75, 0x0e, // Report Size (14) 96 > + * 0x81, 0x01, // Input (Cnst,Arr,Abs) 98 > + * 0xc0, // End Collection 100 > + * 0x05, 0x01, // Usage Page (Generic Desktop) 101 > + * 0x09, 0x02, // Usage (Mouse) 103 > + * 0xa1, 0x01, // Collection (Application) 105 > + * 0x09, 0x01, // Usage (Pointer) 107 > + * 0xa1, 0x00, // Collection (Physical) 109 > + * 0x85, 0x03, // Report ID (3) 111 > + * 0x05, 0x09, // Usage Page (Button) 113 > + * 0x19, 0x01, // Usage Minimum (1) 115 > + * 0x29, 0x08, // Usage Maximum (8) 117 > + * 0x15, 0x00, // Logical Minimum (0) 119 > + * 0x25, 0x01, // Logical Maximum (1) 121 > + * 0x75, 0x01, // Report Size (1) 123 > + * 0x95, 0x08, // Report Count (8) 125 > + * 0x81, 0x02, // Input (Data,Var,Abs) 127 > + * 0x05, 0x01, // Usage Page (Generic Desktop) 129 > + * 0x09, 0x30, // Usage (X) 131 > + * 0x09, 0x31, // Usage (Y) 133 > + * 0x16, 0x01, 0x80, // Logical Minimum (-32767) 135 > + * 0x26, 0xff, 0x7f, // Logical Maximum (32767) 138 > + * 0x75, 0x10, // Report Size (16) 141 > + * 0x95, 0x02, // Report Count (2) 143 > + * 0x81, 0x06, // Input (Data,Var,Rel) 145 > + * 0x09, 0x38, // Usage (Wheel) 147 > + * 0x15, 0x81, // Logical Minimum (-127) 149 > + * 0x25, 0x7f, // Logical Maximum (127) 151 > + * 0x75, 0x08, // Report Size (8) 153 > + * 0x95, 0x01, // Report Count (1) 155 > + * 0x81, 0x06, // Input (Data,Var,Rel) 157 > + * 0x05, 0x0c, // Usage Page (Consumer Devices) 159 > + * 0x0a, 0x38, 0x02, // Usage (AC Pan) 161 > + * 0x95, 0x01, // Report Count (1) 164 > + * 0x81, 0x06, // Input (Data,Var,Rel) 166 > + * 0xc0, // End Collection 168 > + * 0xc0, // End Collection 169 > + * 0x05, 0x01, // Usage Page (Generic Desktop) 170 > + * 0x09, 0x06, // Usage (Keyboard) 172 > + * 0xa1, 0x01, // Collection (Application) 174 > + * 0x85, 0x04, // Report ID (4) 176 > + * 0x05, 0x07, // Usage Page (Keyboard) 178 > + * 0x95, 0x01, // Report Count (1) 180 > + * 0x75, 0x08, // Report Size (8) 182 > + * 0x81, 0x03, // Input (Cnst,Var,Abs) 184 > + * 0x95, 0xe8, // Report Count (232) 186 > + * 0x75, 0x01, // Report Size (1) 188 > + * 0x15, 0x00, // Logical Minimum (0) 190 > + * 0x25, 0x01, // Logical Maximum (1) 192 > + * 0x05, 0x07, // Usage Page (Keyboard) 194 > + * 0x19, 0x00, // Usage Minimum (0) 196 > + * 0x29, 0xe7, // Usage Maximum (231) 198 > + * 0x81, 0x00, // Input (Data,Arr,Abs) 200 <- change to 0x81, 0x02 (Data,Var,Abs) > + * 0xc0, // End Collection 202 > + */ > + > +SEC(HID_BPF_RDESC_FIXUP) > +int BPF_PROG(hid_rdesc_fixup_mistel_md770, struct hid_bpf_ctx *hctx) > +{ > + __u8 *data = hid_bpf_get_data(hctx, 0, HID_MAX_DESCRIPTOR_SIZE); > + > + if (!data) > + return 0; /* EPERM check */ > + > + if (data[201] == 0x00) > + data[201] = 0x02; > + > + return 0; > +} > + > +HID_BPF_OPS(mistel_md770) = { > + .hid_rdesc_fixup = (void *)hid_rdesc_fixup_mistel_md770, > +}; > + > +SEC("syscall") > +int probe(struct hid_bpf_probe_args *ctx) > +{ > + ctx->retval = ctx->rdesc_size != RDESC_SIZE; > + if (ctx->retval) > + ctx->retval = -EINVAL; > + > + return 0; > +} > + > +char _license[] SEC("license") = "GPL"; >

6 months, 2 weeks

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Re: Patch "HID: bpf: Fix NKRO on Mistel MD770" has been added to the 6.1-stable tree

by Benjamin Tissoires

On Tue, Dec 10, 2024 at 10:32 PM Sasha Levin <sashal(a)kernel.org> wrote: > > This is a note to let you know that I've just added the patch titled > > HID: bpf: Fix NKRO on Mistel MD770 > > to the 6.1-stable tree which can be found at: > http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… > > The filename of the patch is: > hid-bpf-fix-nkro-on-mistel-md770.patch > and it can be found in the queue-6.1 subdirectory. > > If you, or anyone else, feels it should not be added to the stable tree, > please let <stable(a)vger.kernel.org> know about it. > Please drop this patch (and in all previous releases). Again, it makes no sense to backport any files in drivers/hid/bpf/progs on kernels before 6.11, and even then, it makes very little value as they are also tracked in a different userspace project (udev-hid-bpf). FWIW, HID-BPF was introduced in v6.3, so it's even more surprising to see such patch added here. Cheers, Benjamin > > > commit 6801fc048d7f85f5a555f46e1961f9c64e33fd8e > Author: Benjamin Tissoires <bentiss(a)kernel.org> > Date: Thu Oct 17 18:34:58 2024 +0200 > > HID: bpf: Fix NKRO on Mistel MD770 > > [ Upstream commit 9bc089307e8dff7797233308372b4a90ce8f79be ] > > Mistel MD770 keyboard (using Holtek Semiconductor, Inc. controller) has > a quirk in report descriptor in one of its interfaces (more detail in > the source file). Fix up the descriptor to allow NKRO to work again. > > Tested by loading the BPF program and confirming that 8 simultaneous > keypresses work. > > Link: https://bugzilla.kernel.org/show_bug.cgi?id=218495 > Link: https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/merge_requests/122 > Signed-off-by: Tatsuyuki Ishi <ishitatsuyuki(a)gmail.com> > Acked-by: Jiri Kosina <jkosina(a)suse.com> > Link: https://patch.msgid.link/20241017-import_bpf_6-13-v2-1-6a7acb89a97f@kernel.… > Signed-off-by: Benjamin Tissoires <bentiss(a)kernel.org> > Signed-off-by: Sasha Levin <sashal(a)kernel.org> > > diff --git a/drivers/hid/bpf/progs/Mistel__MD770.bpf.c b/drivers/hid/bpf/progs/Mistel__MD770.bpf.c > new file mode 100644 > index 0000000000000..fb8b5a6968b12 > --- /dev/null > +++ b/drivers/hid/bpf/progs/Mistel__MD770.bpf.c > @@ -0,0 +1,154 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* Copyright (c) 2024 Tatsuyuki Ishi > + */ > + > +#include "vmlinux.h" > +#include "hid_bpf.h" > +#include "hid_bpf_helpers.h" > +#include <bpf/bpf_tracing.h> > + > +#define VID_HOLTEK 0x04D9 > +#define PID_MD770 0x0339 > +#define RDESC_SIZE 203 > + > +HID_BPF_CONFIG( > + HID_DEVICE(BUS_USB, HID_GROUP_GENERIC, VID_HOLTEK, PID_MD770) > +); > + > +/* > + * The Mistel MD770 keyboard reports the first 6 simultaneous key presses > + * through the first interface, and anything beyond that through a second > + * interface. Unfortunately, the second interface's report descriptor has an > + * error, causing events to be malformed and ignored. This HID-BPF driver > + * fixes the descriptor to allow NKRO to work again. > + * > + * For reference, this is the original report descriptor: > + * > + * 0x05, 0x01, // Usage Page (Generic Desktop) 0 > + * 0x09, 0x80, // Usage (System Control) 2 > + * 0xa1, 0x01, // Collection (Application) 4 > + * 0x85, 0x01, // Report ID (1) 6 > + * 0x19, 0x81, // Usage Minimum (129) 8 > + * 0x29, 0x83, // Usage Maximum (131) 10 > + * 0x15, 0x00, // Logical Minimum (0) 12 > + * 0x25, 0x01, // Logical Maximum (1) 14 > + * 0x95, 0x03, // Report Count (3) 16 > + * 0x75, 0x01, // Report Size (1) 18 > + * 0x81, 0x02, // Input (Data,Var,Abs) 20 > + * 0x95, 0x01, // Report Count (1) 22 > + * 0x75, 0x05, // Report Size (5) 24 > + * 0x81, 0x01, // Input (Cnst,Arr,Abs) 26 > + * 0xc0, // End Collection 28 > + * 0x05, 0x0c, // Usage Page (Consumer Devices) 29 > + * 0x09, 0x01, // Usage (Consumer Control) 31 > + * 0xa1, 0x01, // Collection (Application) 33 > + * 0x85, 0x02, // Report ID (2) 35 > + * 0x15, 0x00, // Logical Minimum (0) 37 > + * 0x25, 0x01, // Logical Maximum (1) 39 > + * 0x95, 0x12, // Report Count (18) 41 > + * 0x75, 0x01, // Report Size (1) 43 > + * 0x0a, 0x83, 0x01, // Usage (AL Consumer Control Config) 45 > + * 0x0a, 0x8a, 0x01, // Usage (AL Email Reader) 48 > + * 0x0a, 0x92, 0x01, // Usage (AL Calculator) 51 > + * 0x0a, 0x94, 0x01, // Usage (AL Local Machine Browser) 54 > + * 0x09, 0xcd, // Usage (Play/Pause) 57 > + * 0x09, 0xb7, // Usage (Stop) 59 > + * 0x09, 0xb6, // Usage (Scan Previous Track) 61 > + * 0x09, 0xb5, // Usage (Scan Next Track) 63 > + * 0x09, 0xe2, // Usage (Mute) 65 > + * 0x09, 0xea, // Usage (Volume Down) 67 > + * 0x09, 0xe9, // Usage (Volume Up) 69 > + * 0x0a, 0x21, 0x02, // Usage (AC Search) 71 > + * 0x0a, 0x23, 0x02, // Usage (AC Home) 74 > + * 0x0a, 0x24, 0x02, // Usage (AC Back) 77 > + * 0x0a, 0x25, 0x02, // Usage (AC Forward) 80 > + * 0x0a, 0x26, 0x02, // Usage (AC Stop) 83 > + * 0x0a, 0x27, 0x02, // Usage (AC Refresh) 86 > + * 0x0a, 0x2a, 0x02, // Usage (AC Bookmarks) 89 > + * 0x81, 0x02, // Input (Data,Var,Abs) 92 > + * 0x95, 0x01, // Report Count (1) 94 > + * 0x75, 0x0e, // Report Size (14) 96 > + * 0x81, 0x01, // Input (Cnst,Arr,Abs) 98 > + * 0xc0, // End Collection 100 > + * 0x05, 0x01, // Usage Page (Generic Desktop) 101 > + * 0x09, 0x02, // Usage (Mouse) 103 > + * 0xa1, 0x01, // Collection (Application) 105 > + * 0x09, 0x01, // Usage (Pointer) 107 > + * 0xa1, 0x00, // Collection (Physical) 109 > + * 0x85, 0x03, // Report ID (3) 111 > + * 0x05, 0x09, // Usage Page (Button) 113 > + * 0x19, 0x01, // Usage Minimum (1) 115 > + * 0x29, 0x08, // Usage Maximum (8) 117 > + * 0x15, 0x00, // Logical Minimum (0) 119 > + * 0x25, 0x01, // Logical Maximum (1) 121 > + * 0x75, 0x01, // Report Size (1) 123 > + * 0x95, 0x08, // Report Count (8) 125 > + * 0x81, 0x02, // Input (Data,Var,Abs) 127 > + * 0x05, 0x01, // Usage Page (Generic Desktop) 129 > + * 0x09, 0x30, // Usage (X) 131 > + * 0x09, 0x31, // Usage (Y) 133 > + * 0x16, 0x01, 0x80, // Logical Minimum (-32767) 135 > + * 0x26, 0xff, 0x7f, // Logical Maximum (32767) 138 > + * 0x75, 0x10, // Report Size (16) 141 > + * 0x95, 0x02, // Report Count (2) 143 > + * 0x81, 0x06, // Input (Data,Var,Rel) 145 > + * 0x09, 0x38, // Usage (Wheel) 147 > + * 0x15, 0x81, // Logical Minimum (-127) 149 > + * 0x25, 0x7f, // Logical Maximum (127) 151 > + * 0x75, 0x08, // Report Size (8) 153 > + * 0x95, 0x01, // Report Count (1) 155 > + * 0x81, 0x06, // Input (Data,Var,Rel) 157 > + * 0x05, 0x0c, // Usage Page (Consumer Devices) 159 > + * 0x0a, 0x38, 0x02, // Usage (AC Pan) 161 > + * 0x95, 0x01, // Report Count (1) 164 > + * 0x81, 0x06, // Input (Data,Var,Rel) 166 > + * 0xc0, // End Collection 168 > + * 0xc0, // End Collection 169 > + * 0x05, 0x01, // Usage Page (Generic Desktop) 170 > + * 0x09, 0x06, // Usage (Keyboard) 172 > + * 0xa1, 0x01, // Collection (Application) 174 > + * 0x85, 0x04, // Report ID (4) 176 > + * 0x05, 0x07, // Usage Page (Keyboard) 178 > + * 0x95, 0x01, // Report Count (1) 180 > + * 0x75, 0x08, // Report Size (8) 182 > + * 0x81, 0x03, // Input (Cnst,Var,Abs) 184 > + * 0x95, 0xe8, // Report Count (232) 186 > + * 0x75, 0x01, // Report Size (1) 188 > + * 0x15, 0x00, // Logical Minimum (0) 190 > + * 0x25, 0x01, // Logical Maximum (1) 192 > + * 0x05, 0x07, // Usage Page (Keyboard) 194 > + * 0x19, 0x00, // Usage Minimum (0) 196 > + * 0x29, 0xe7, // Usage Maximum (231) 198 > + * 0x81, 0x00, // Input (Data,Arr,Abs) 200 <- change to 0x81, 0x02 (Data,Var,Abs) > + * 0xc0, // End Collection 202 > + */ > + > +SEC(HID_BPF_RDESC_FIXUP) > +int BPF_PROG(hid_rdesc_fixup_mistel_md770, struct hid_bpf_ctx *hctx) > +{ > + __u8 *data = hid_bpf_get_data(hctx, 0, HID_MAX_DESCRIPTOR_SIZE); > + > + if (!data) > + return 0; /* EPERM check */ > + > + if (data[201] == 0x00) > + data[201] = 0x02; > + > + return 0; > +} > + > +HID_BPF_OPS(mistel_md770) = { > + .hid_rdesc_fixup = (void *)hid_rdesc_fixup_mistel_md770, > +}; > + > +SEC("syscall") > +int probe(struct hid_bpf_probe_args *ctx) > +{ > + ctx->retval = ctx->rdesc_size != RDESC_SIZE; > + if (ctx->retval) > + ctx->retval = -EINVAL; > + > + return 0; > +} > + > +char _license[] SEC("license") = "GPL"; >

6 months, 2 weeks

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[PATCH 2/2] zram: cond_resched() in writeback loop

by Sergey Senozhatsky

zram writeback is a costly operation, because every target slot (unless ZRAM_HUGE) is decompressed before it gets written to a backing device. The writeback to a backing device uses submit_bio_wait() which may look like a rescheduling point. However, if the backing device has BD_HAS_SUBMIT_BIO bit set __submit_bio() calls directly disk->fops->submit_bio(bio) on the backing device and so when submit_bio_wait() calls blk_wait_io() the I/O is already done. On such systems we effective end up in a loop for_each (target slot) { decompress(slot) __submit_bio() disk->fops->submit_bio(bio) } Which on PREEMPT_NONE systems triggers watchdogs (since there are no explicit rescheduling points). Add cond_resched() to the zram writeback loop. Fixes: a939888ec38b ("zram: support idle/huge page writeback") Cc: stable(a)vger.kernel.org Signed-off-by: Sergey Senozhatsky <senozhatsky(a)chromium.org> --- drivers/block/zram/zram_drv.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index 0a924fae02a4..f5fa3db6b4f8 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -884,6 +884,8 @@ static ssize_t writeback_store(struct device *dev, next: zram_slot_unlock(zram, index); release_pp_slot(zram, pps); + + cond_resched(); } if (blk_idx) -- 2.47.1.613.gc27f4b7a9f-goog

6 months, 2 weeks

1
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[PATCH 6.1.y] fs/ntfs3: Fixed overflow check in mi_enum_attr()

by jianqi.ren.cn＠windriver.com

From: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com> [ Upstream commit 652cfeb43d6b9aba5c7c4902bed7a7340df131fb ] Reported-by: Robert Morris <rtm(a)csail.mit.edu> Signed-off-by: Konstantin Komarov <almaz.alexandrovich(a)paragon-software.com> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Jianqi.ren.cn(a)windriver.com <jianqi.ren.cn(a)windriver.com> --- fs/ntfs3/record.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ntfs3/record.c b/fs/ntfs3/record.c index 7ab452710572..826a756669a3 100644 --- a/fs/ntfs3/record.c +++ b/fs/ntfs3/record.c @@ -273,7 +273,7 @@ struct ATTRIB *mi_enum_attr(struct mft_inode *mi, struct ATTRIB *attr) if (t16 > asize) return NULL; - if (t16 + le32_to_cpu(attr->res.data_size) > asize) + if (le32_to_cpu(attr->res.data_size) > asize - t16) return NULL; if (attr->name_len && -- 2.25.1

6 months, 2 weeks

3
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[PATCH 6.1.y] drm/amd/display: fixed integer types and null check locations

by jianqi.ren.cn＠windriver.com

From: Sohaib Nadeem <sohaib.nadeem(a)amd.com> [ Upstream commit 0484e05d048b66d01d1f3c1d2306010bb57d8738 ] [why]: issues fixed: - comparison with wider integer type in loop condition which can cause infinite loops - pointer dereference before null check Cc: Mario Limonciello <mario.limonciello(a)amd.com> Cc: Alex Deucher <alexander.deucher(a)amd.com> Cc: stable(a)vger.kernel.org Reviewed-by: Josip Pavic <josip.pavic(a)amd.com> Acked-by: Aurabindo Pillai <aurabindo.pillai(a)amd.com> Signed-off-by: Sohaib Nadeem <sohaib.nadeem(a)amd.com> Tested-by: Daniel Wheeler <daniel.wheeler(a)amd.com> Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com> Signed-off-by: Jianqi Ren <jianqi.ren.cn(a)windriver.com> --- .../gpu/drm/amd/display/dc/bios/bios_parser2.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c b/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c index 4d2590964a20..75e44d8a7b40 100644 --- a/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c +++ b/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c @@ -1862,19 +1862,21 @@ static enum bp_result get_firmware_info_v3_2( /* Vega12 */ smu_info_v3_2 = GET_IMAGE(struct atom_smu_info_v3_2, DATA_TABLES(smu_info)); - DC_LOG_BIOS("gpuclk_ss_percentage (unit of 0.001 percent): %d\n", smu_info_v3_2->gpuclk_ss_percentage); if (!smu_info_v3_2) return BP_RESULT_BADBIOSTABLE; + DC_LOG_BIOS("gpuclk_ss_percentage (unit of 0.001 percent): %d\n", smu_info_v3_2->gpuclk_ss_percentage); + info->default_engine_clk = smu_info_v3_2->bootup_dcefclk_10khz * 10; } else if (revision.minor == 3) { /* Vega20 */ smu_info_v3_3 = GET_IMAGE(struct atom_smu_info_v3_3, DATA_TABLES(smu_info)); - DC_LOG_BIOS("gpuclk_ss_percentage (unit of 0.001 percent): %d\n", smu_info_v3_3->gpuclk_ss_percentage); if (!smu_info_v3_3) return BP_RESULT_BADBIOSTABLE; + DC_LOG_BIOS("gpuclk_ss_percentage (unit of 0.001 percent): %d\n", smu_info_v3_3->gpuclk_ss_percentage); + info->default_engine_clk = smu_info_v3_3->bootup_dcefclk_10khz * 10; } @@ -2439,10 +2441,11 @@ static enum bp_result get_integrated_info_v11( info_v11 = GET_IMAGE(struct atom_integrated_system_info_v1_11, DATA_TABLES(integratedsysteminfo)); - DC_LOG_BIOS("gpuclk_ss_percentage (unit of 0.001 percent): %d\n", info_v11->gpuclk_ss_percentage); if (info_v11 == NULL) return BP_RESULT_BADBIOSTABLE; + DC_LOG_BIOS("gpuclk_ss_percentage (unit of 0.001 percent): %d\n", info_v11->gpuclk_ss_percentage); + info->gpu_cap_info = le32_to_cpu(info_v11->gpucapinfo); /* @@ -2654,11 +2657,12 @@ static enum bp_result get_integrated_info_v2_1( info_v2_1 = GET_IMAGE(struct atom_integrated_system_info_v2_1, DATA_TABLES(integratedsysteminfo)); - DC_LOG_BIOS("gpuclk_ss_percentage (unit of 0.001 percent): %d\n", info_v2_1->gpuclk_ss_percentage); if (info_v2_1 == NULL) return BP_RESULT_BADBIOSTABLE; + DC_LOG_BIOS("gpuclk_ss_percentage (unit of 0.001 percent): %d\n", info_v2_1->gpuclk_ss_percentage); + info->gpu_cap_info = le32_to_cpu(info_v2_1->gpucapinfo); /* @@ -2816,11 +2820,11 @@ static enum bp_result get_integrated_info_v2_2( info_v2_2 = GET_IMAGE(struct atom_integrated_system_info_v2_2, DATA_TABLES(integratedsysteminfo)); - DC_LOG_BIOS("gpuclk_ss_percentage (unit of 0.001 percent): %d\n", info_v2_2->gpuclk_ss_percentage); - if (info_v2_2 == NULL) return BP_RESULT_BADBIOSTABLE; + DC_LOG_BIOS("gpuclk_ss_percentage (unit of 0.001 percent): %d\n", info_v2_2->gpuclk_ss_percentage); + info->gpu_cap_info = le32_to_cpu(info_v2_2->gpucapinfo); /* -- 2.25.1

6 months, 2 weeks

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[PATCH 6.1.y] dmaengine: dw-edma: eDMA: Add sync read before starting the DMA transfer in remote setup

by jianqi.ren.cn＠windriver.com

From: Kory Maincent <kory.maincent(a)bootlin.com> [ Upstream commit bbcc1c83f343e580c3aa1f2a8593343bf7b55bba ] The Linked list element and pointer are not stored in the same memory as the eDMA controller register. If the doorbell register is toggled before the full write of the linked list a race condition error will occur. In remote setup we can only use a readl to the memory to assure the full write has occurred. Fixes: 7e4b8a4fbe2c ("dmaengine: Add Synopsys eDMA IP version 0 support") Reviewed-by: Serge Semin <fancer.lancer(a)gmail.com> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam(a)linaro.org> Signed-off-by: Kory Maincent <kory.maincent(a)bootlin.com> Link: https://lore.kernel.org/r/20240129-b4-feature_hdma_mainline-v7-6-8e8c1acb7a… Signed-off-by: Vinod Koul <vkoul(a)kernel.org> Signed-off-by: Jianqi Ren <jianqi.ren.cn(a)windriver.com> --- drivers/dma/dw-edma/dw-edma-v0-core.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/dma/dw-edma/dw-edma-v0-core.c b/drivers/dma/dw-edma/dw-edma-v0-core.c index a3816ba63285..4fe83d5a25b6 100644 --- a/drivers/dma/dw-edma/dw-edma-v0-core.c +++ b/drivers/dma/dw-edma/dw-edma-v0-core.c @@ -357,6 +357,20 @@ static void dw_edma_v0_core_write_chunk(struct dw_edma_chunk *chunk) #endif /* CONFIG_64BIT */ } +static void dw_edma_v0_sync_ll_data(struct dw_edma_chunk *chunk) +{ + /* + * In case of remote eDMA engine setup, the DW PCIe RP/EP internal + * configuration registers and application memory are normally accessed + * over different buses. Ensure LL-data reaches the memory before the + * doorbell register is toggled by issuing the dummy-read from the remote + * LL memory in a hope that the MRd TLP will return only after the + * last MWr TLP is completed + */ + if (!(chunk->chan->dw->chip->flags & DW_EDMA_CHIP_LOCAL)) + readl(chunk->ll_region.vaddr.io); +} + void dw_edma_v0_core_start(struct dw_edma_chunk *chunk, bool first) { struct dw_edma_chan *chan = chunk->chan; @@ -423,6 +437,9 @@ void dw_edma_v0_core_start(struct dw_edma_chunk *chunk, bool first) SET_CH_32(dw, chan->dir, chan->id, llp.msb, upper_32_bits(chunk->ll_region.paddr)); } + + dw_edma_v0_sync_ll_data(chunk); + /* Doorbell */ SET_RW_32(dw, chan->dir, doorbell, FIELD_PREP(EDMA_V0_DOORBELL_CH_MASK, chan->id)); -- 2.39.4

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