[PATCH 5.15 55/91] i915/perf: Replace DRM_DEBUG with driver specific drm_dbg call

From: Umesh Nerlige Ramappa umesh.nerlige.ramappa@intel.com

[ Upstream commit 2fec539112e89255b6a47f566e21d99937fada7b ]

DRM_DEBUG is not the right debug call to use in i915 OA, replace it with driver specific drm_dbg() call (Matt).

Signed-off-by: Umesh Nerlige Ramappa umesh.nerlige.ramappa@intel.com Acked-by: Lionel Landwerlin lionel.g.landwerlin@intel.com Reviewed-by: Andrzej Hajda andrzej.hajda@intel.com Signed-off-by: Matt Roper matthew.d.roper@intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20220707193002.2859653-1-umesh... Stable-dep-of: dc30c0114691 ("drm/i915: fix race condition UAF in i915_perf_add_config_ioctl") Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/i915/i915_perf.c | 151 ++++++++++++++++++++----------- 1 file changed, 100 insertions(+), 51 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c index f3c8f87d25ae0..4b57cc10bd68e 100644 --- a/drivers/gpu/drm/i915/i915_perf.c +++ b/drivers/gpu/drm/i915/i915_perf.c @@ -879,8 +879,9 @@ static int gen8_oa_read(struct i915_perf_stream *stream, if (ret) return ret;

- DRM_DEBUG("OA buffer overflow (exponent = %d): force restart\n", - stream->period_exponent); + drm_dbg(&stream->perf->i915->drm, + "OA buffer overflow (exponent = %d): force restart\n", + stream->period_exponent);

stream->perf->ops.oa_disable(stream); stream->perf->ops.oa_enable(stream); @@ -1102,8 +1103,9 @@ static int gen7_oa_read(struct i915_perf_stream *stream, if (ret) return ret;

- DRM_DEBUG("OA buffer overflow (exponent = %d): force restart\n", - stream->period_exponent); + drm_dbg(&stream->perf->i915->drm, + "OA buffer overflow (exponent = %d): force restart\n", + stream->period_exponent);

stream->perf->ops.oa_disable(stream); stream->perf->ops.oa_enable(stream); @@ -2857,7 +2859,8 @@ static int i915_oa_stream_init(struct i915_perf_stream *stream, int ret;

if (!props->engine) { - DRM_DEBUG("OA engine not specified\n"); + drm_dbg(&stream->perf->i915->drm, + "OA engine not specified\n"); return -EINVAL; }

@@ -2867,18 +2870,21 @@ static int i915_oa_stream_init(struct i915_perf_stream *stream, * IDs */ if (!perf->metrics_kobj) { - DRM_DEBUG("OA metrics weren't advertised via sysfs\n"); + drm_dbg(&stream->perf->i915->drm, + "OA metrics weren't advertised via sysfs\n"); return -EINVAL; }

if (!(props->sample_flags & SAMPLE_OA_REPORT) && (GRAPHICS_VER(perf->i915) < 12 || !stream->ctx)) { - DRM_DEBUG("Only OA report sampling supported\n"); + drm_dbg(&stream->perf->i915->drm, + "Only OA report sampling supported\n"); return -EINVAL; }

if (!perf->ops.enable_metric_set) { - DRM_DEBUG("OA unit not supported\n"); + drm_dbg(&stream->perf->i915->drm, + "OA unit not supported\n"); return -ENODEV; }

@@ -2888,12 +2894,14 @@ static int i915_oa_stream_init(struct i915_perf_stream *stream, * we currently only allow exclusive access */ if (perf->exclusive_stream) { - DRM_DEBUG("OA unit already in use\n"); + drm_dbg(&stream->perf->i915->drm, + "OA unit already in use\n"); return -EBUSY; }

if (!props->oa_format) { - DRM_DEBUG("OA report format not specified\n"); + drm_dbg(&stream->perf->i915->drm, + "OA report format not specified\n"); return -EINVAL; }

@@ -2923,20 +2931,23 @@ static int i915_oa_stream_init(struct i915_perf_stream *stream, if (stream->ctx) { ret = oa_get_render_ctx_id(stream); if (ret) { - DRM_DEBUG("Invalid context id to filter with\n"); + drm_dbg(&stream->perf->i915->drm, + "Invalid context id to filter with\n"); return ret; } }

ret = alloc_noa_wait(stream); if (ret) { - DRM_DEBUG("Unable to allocate NOA wait batch buffer\n"); + drm_dbg(&stream->perf->i915->drm, + "Unable to allocate NOA wait batch buffer\n"); goto err_noa_wait_alloc; }

stream->oa_config = i915_perf_get_oa_config(perf, props->metrics_set); if (!stream->oa_config) { - DRM_DEBUG("Invalid OA config id=%i\n", props->metrics_set); + drm_dbg(&stream->perf->i915->drm, + "Invalid OA config id=%i\n", props->metrics_set); ret = -EINVAL; goto err_config; } @@ -2967,11 +2978,13 @@ static int i915_oa_stream_init(struct i915_perf_stream *stream,

ret = i915_perf_stream_enable_sync(stream); if (ret) { - DRM_DEBUG("Unable to enable metric set\n"); + drm_dbg(&stream->perf->i915->drm, + "Unable to enable metric set\n"); goto err_enable; }

- DRM_DEBUG("opening stream oa config uuid=%s\n", + drm_dbg(&stream->perf->i915->drm, + "opening stream oa config uuid=%s\n", stream->oa_config->uuid);

hrtimer_init(&stream->poll_check_timer, @@ -3423,7 +3436,8 @@ i915_perf_open_ioctl_locked(struct i915_perf *perf,

specific_ctx = i915_gem_context_lookup(file_priv, ctx_handle); if (IS_ERR(specific_ctx)) { - DRM_DEBUG("Failed to look up context with ID %u for opening perf stream\n", + drm_dbg(&perf->i915->drm, + "Failed to look up context with ID %u for opening perf stream\n", ctx_handle); ret = PTR_ERR(specific_ctx); goto err; @@ -3457,7 +3471,8 @@ i915_perf_open_ioctl_locked(struct i915_perf *perf,

if (props->hold_preemption) { if (!props->single_context) { - DRM_DEBUG("preemption disable with no context\n"); + drm_dbg(&perf->i915->drm, + "preemption disable with no context\n"); ret = -EINVAL; goto err; } @@ -3479,7 +3494,8 @@ i915_perf_open_ioctl_locked(struct i915_perf *perf, */ if (privileged_op && i915_perf_stream_paranoid && !perfmon_capable()) { - DRM_DEBUG("Insufficient privileges to open i915 perf stream\n"); + drm_dbg(&perf->i915->drm, + "Insufficient privileges to open i915 perf stream\n"); ret = -EACCES; goto err_ctx; } @@ -3586,7 +3602,8 @@ static int read_properties_unlocked(struct i915_perf *perf, props->poll_oa_period = DEFAULT_POLL_PERIOD_NS;

if (!n_props) { - DRM_DEBUG("No i915 perf properties given\n"); + drm_dbg(&perf->i915->drm, + "No i915 perf properties given\n"); return -EINVAL; }

@@ -3595,7 +3612,8 @@ static int read_properties_unlocked(struct i915_perf *perf, I915_ENGINE_CLASS_RENDER, 0); if (!props->engine) { - DRM_DEBUG("No RENDER-capable engines\n"); + drm_dbg(&perf->i915->drm, + "No RENDER-capable engines\n"); return -EINVAL; }

@@ -3606,7 +3624,8 @@ static int read_properties_unlocked(struct i915_perf *perf, * from userspace. */ if (n_props >= DRM_I915_PERF_PROP_MAX) { - DRM_DEBUG("More i915 perf properties specified than exist\n"); + drm_dbg(&perf->i915->drm, + "More i915 perf properties specified than exist\n"); return -EINVAL; }

@@ -3623,7 +3642,8 @@ static int read_properties_unlocked(struct i915_perf *perf, return ret;

if (id == 0 || id >= DRM_I915_PERF_PROP_MAX) { - DRM_DEBUG("Unknown i915 perf property ID\n"); + drm_dbg(&perf->i915->drm, + "Unknown i915 perf property ID\n"); return -EINVAL; }

@@ -3638,19 +3658,22 @@ static int read_properties_unlocked(struct i915_perf *perf, break; case DRM_I915_PERF_PROP_OA_METRICS_SET: if (value == 0) { - DRM_DEBUG("Unknown OA metric set ID\n"); + drm_dbg(&perf->i915->drm, + "Unknown OA metric set ID\n"); return -EINVAL; } props->metrics_set = value; break; case DRM_I915_PERF_PROP_OA_FORMAT: if (value == 0 || value >= I915_OA_FORMAT_MAX) { - DRM_DEBUG("Out-of-range OA report format %llu\n", + drm_dbg(&perf->i915->drm, + "Out-of-range OA report format %llu\n", value); return -EINVAL; } if (!oa_format_valid(perf, value)) { - DRM_DEBUG("Unsupported OA report format %llu\n", + drm_dbg(&perf->i915->drm, + "Unsupported OA report format %llu\n", value); return -EINVAL; } @@ -3658,7 +3681,8 @@ static int read_properties_unlocked(struct i915_perf *perf, break; case DRM_I915_PERF_PROP_OA_EXPONENT: if (value > OA_EXPONENT_MAX) { - DRM_DEBUG("OA timer exponent too high (> %u)\n", + drm_dbg(&perf->i915->drm, + "OA timer exponent too high (> %u)\n", OA_EXPONENT_MAX); return -EINVAL; } @@ -3686,7 +3710,8 @@ static int read_properties_unlocked(struct i915_perf *perf, oa_freq_hz = 0;

if (oa_freq_hz > i915_oa_max_sample_rate && !perfmon_capable()) { - DRM_DEBUG("OA exponent would exceed the max sampling frequency (sysctl dev.i915.oa_max_sample_rate) %uHz without CAP_PERFMON or CAP_SYS_ADMIN privileges\n", + drm_dbg(&perf->i915->drm, + "OA exponent would exceed the max sampling frequency (sysctl dev.i915.oa_max_sample_rate) %uHz without CAP_PERFMON or CAP_SYS_ADMIN privileges\n", i915_oa_max_sample_rate); return -EACCES; } @@ -3703,13 +3728,15 @@ static int read_properties_unlocked(struct i915_perf *perf, if (copy_from_user(&user_sseu, u64_to_user_ptr(value), sizeof(user_sseu))) { - DRM_DEBUG("Unable to copy global sseu parameter\n"); + drm_dbg(&perf->i915->drm, + "Unable to copy global sseu parameter\n"); return -EFAULT; }

ret = get_sseu_config(&props->sseu, props->engine, &user_sseu); if (ret) { - DRM_DEBUG("Invalid SSEU configuration\n"); + drm_dbg(&perf->i915->drm, + "Invalid SSEU configuration\n"); return ret; } props->has_sseu = true; @@ -3717,7 +3744,8 @@ static int read_properties_unlocked(struct i915_perf *perf, } case DRM_I915_PERF_PROP_POLL_OA_PERIOD: if (value < 100000 /* 100us */) { - DRM_DEBUG("OA availability timer too small (%lluns < 100us)\n", + drm_dbg(&perf->i915->drm, + "OA availability timer too small (%lluns < 100us)\n", value); return -EINVAL; } @@ -3768,7 +3796,8 @@ int i915_perf_open_ioctl(struct drm_device *dev, void *data, int ret;

if (!perf->i915) { - DRM_DEBUG("i915 perf interface not available for this system\n"); + drm_dbg(&perf->i915->drm, + "i915 perf interface not available for this system\n"); return -ENOTSUPP; }

@@ -3776,7 +3805,8 @@ int i915_perf_open_ioctl(struct drm_device *dev, void *data, I915_PERF_FLAG_FD_NONBLOCK | I915_PERF_FLAG_DISABLED; if (param->flags & ~known_open_flags) { - DRM_DEBUG("Unknown drm_i915_perf_open_param flag\n"); + drm_dbg(&perf->i915->drm, + "Unknown drm_i915_perf_open_param flag\n"); return -EINVAL; }

@@ -3986,7 +4016,8 @@ static struct i915_oa_reg *alloc_oa_regs(struct i915_perf *perf, goto addr_err;

if (!is_valid(perf, addr)) { - DRM_DEBUG("Invalid oa_reg address: %X\n", addr); + drm_dbg(&perf->i915->drm, + "Invalid oa_reg address: %X\n", addr); err = -EINVAL; goto addr_err; } @@ -4060,30 +4091,35 @@ int i915_perf_add_config_ioctl(struct drm_device *dev, void *data, int err, id;

if (!perf->i915) { - DRM_DEBUG("i915 perf interface not available for this system\n"); + drm_dbg(&perf->i915->drm, + "i915 perf interface not available for this system\n"); return -ENOTSUPP; }

if (!perf->metrics_kobj) { - DRM_DEBUG("OA metrics weren't advertised via sysfs\n"); + drm_dbg(&perf->i915->drm, + "OA metrics weren't advertised via sysfs\n"); return -EINVAL; }

if (i915_perf_stream_paranoid && !perfmon_capable()) { - DRM_DEBUG("Insufficient privileges to add i915 OA config\n"); + drm_dbg(&perf->i915->drm, + "Insufficient privileges to add i915 OA config\n"); return -EACCES; }

if ((!args->mux_regs_ptr || !args->n_mux_regs) && (!args->boolean_regs_ptr || !args->n_boolean_regs) && (!args->flex_regs_ptr || !args->n_flex_regs)) { - DRM_DEBUG("No OA registers given\n"); + drm_dbg(&perf->i915->drm, + "No OA registers given\n"); return -EINVAL; }

oa_config = kzalloc(sizeof(*oa_config), GFP_KERNEL); if (!oa_config) { - DRM_DEBUG("Failed to allocate memory for the OA config\n"); + drm_dbg(&perf->i915->drm, + "Failed to allocate memory for the OA config\n"); return -ENOMEM; }

@@ -4091,7 +4127,8 @@ int i915_perf_add_config_ioctl(struct drm_device *dev, void *data, kref_init(&oa_config->ref);

if (!uuid_is_valid(args->uuid)) { - DRM_DEBUG("Invalid uuid format for OA config\n"); + drm_dbg(&perf->i915->drm, + "Invalid uuid format for OA config\n"); err = -EINVAL; goto reg_err; } @@ -4108,7 +4145,8 @@ int i915_perf_add_config_ioctl(struct drm_device *dev, void *data, args->n_mux_regs);

if (IS_ERR(regs)) { - DRM_DEBUG("Failed to create OA config for mux_regs\n"); + drm_dbg(&perf->i915->drm, + "Failed to create OA config for mux_regs\n"); err = PTR_ERR(regs); goto reg_err; } @@ -4121,7 +4159,8 @@ int i915_perf_add_config_ioctl(struct drm_device *dev, void *data, args->n_boolean_regs);

if (IS_ERR(regs)) { - DRM_DEBUG("Failed to create OA config for b_counter_regs\n"); + drm_dbg(&perf->i915->drm, + "Failed to create OA config for b_counter_regs\n"); err = PTR_ERR(regs); goto reg_err; } @@ -4140,7 +4179,8 @@ int i915_perf_add_config_ioctl(struct drm_device *dev, void *data, args->n_flex_regs);

if (IS_ERR(regs)) { - DRM_DEBUG("Failed to create OA config for flex_regs\n"); + drm_dbg(&perf->i915->drm, + "Failed to create OA config for flex_regs\n"); err = PTR_ERR(regs); goto reg_err; } @@ -4156,7 +4196,8 @@ int i915_perf_add_config_ioctl(struct drm_device *dev, void *data, */ idr_for_each_entry(&perf->metrics_idr, tmp, id) { if (!strcmp(tmp->uuid, oa_config->uuid)) { - DRM_DEBUG("OA config already exists with this uuid\n"); + drm_dbg(&perf->i915->drm, + "OA config already exists with this uuid\n"); err = -EADDRINUSE; goto sysfs_err; } @@ -4164,7 +4205,8 @@ int i915_perf_add_config_ioctl(struct drm_device *dev, void *data,

err = create_dynamic_oa_sysfs_entry(perf, oa_config); if (err) { - DRM_DEBUG("Failed to create sysfs entry for OA config\n"); + drm_dbg(&perf->i915->drm, + "Failed to create sysfs entry for OA config\n"); goto sysfs_err; }

@@ -4173,14 +4215,16 @@ int i915_perf_add_config_ioctl(struct drm_device *dev, void *data, oa_config, 2, 0, GFP_KERNEL); if (oa_config->id < 0) { - DRM_DEBUG("Failed to create sysfs entry for OA config\n"); + drm_dbg(&perf->i915->drm, + "Failed to create sysfs entry for OA config\n"); err = oa_config->id; goto sysfs_err; }

mutex_unlock(&perf->metrics_lock);

- DRM_DEBUG("Added config %s id=%i\n", oa_config->uuid, oa_config->id); + drm_dbg(&perf->i915->drm, + "Added config %s id=%i\n", oa_config->uuid, oa_config->id);

return oa_config->id;

@@ -4188,7 +4232,8 @@ int i915_perf_add_config_ioctl(struct drm_device *dev, void *data, mutex_unlock(&perf->metrics_lock); reg_err: i915_oa_config_put(oa_config); - DRM_DEBUG("Failed to add new OA config\n"); + drm_dbg(&perf->i915->drm, + "Failed to add new OA config\n"); return err; }

@@ -4212,12 +4257,14 @@ int i915_perf_remove_config_ioctl(struct drm_device *dev, void *data, int ret;

if (!perf->i915) { - DRM_DEBUG("i915 perf interface not available for this system\n"); + drm_dbg(&perf->i915->drm, + "i915 perf interface not available for this system\n"); return -ENOTSUPP; }

if (i915_perf_stream_paranoid && !perfmon_capable()) { - DRM_DEBUG("Insufficient privileges to remove i915 OA config\n"); + drm_dbg(&perf->i915->drm, + "Insufficient privileges to remove i915 OA config\n"); return -EACCES; }

@@ -4227,7 +4274,8 @@ int i915_perf_remove_config_ioctl(struct drm_device *dev, void *data,

oa_config = idr_find(&perf->metrics_idr, *arg); if (!oa_config) { - DRM_DEBUG("Failed to remove unknown OA config\n"); + drm_dbg(&perf->i915->drm, + "Failed to remove unknown OA config\n"); ret = -ENOENT; goto err_unlock; } @@ -4240,7 +4288,8 @@ int i915_perf_remove_config_ioctl(struct drm_device *dev, void *data,

mutex_unlock(&perf->metrics_lock);

- DRM_DEBUG("Removed config %s id=%i\n", oa_config->uuid, oa_config->id); + drm_dbg(&perf->i915->drm, + "Removed config %s id=%i\n", oa_config->uuid, oa_config->id);

i915_oa_config_put(oa_config);