#ifndef __SOUND_EMUX_LEGACY_H #define __SOUND_EMUX_LEGACY_H /* * Copyright (c) 1999-2000 Takashi Iwai * * Definitions of OSS compatible headers for Emu8000 device informations * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ #include /* * awe hardware controls */ #define _EMUX_OSS_DEBUG_MODE 0x00 #define _EMUX_OSS_REVERB_MODE 0x01 #define _EMUX_OSS_CHORUS_MODE 0x02 #define _EMUX_OSS_REMOVE_LAST_SAMPLES 0x03 #define _EMUX_OSS_INITIALIZE_CHIP 0x04 #define _EMUX_OSS_SEND_EFFECT 0x05 #define _EMUX_OSS_TERMINATE_CHANNEL 0x06 #define _EMUX_OSS_TERMINATE_ALL 0x07 #define _EMUX_OSS_INITIAL_VOLUME 0x08 #define _EMUX_OSS_INITIAL_ATTEN _EMUX_OSS_INITIAL_VOLUME #define _EMUX_OSS_RESET_CHANNEL 0x09 #define _EMUX_OSS_CHANNEL_MODE 0x0a #define _EMUX_OSS_DRUM_CHANNELS 0x0b #define _EMUX_OSS_MISC_MODE 0x0c #define _EMUX_OSS_RELEASE_ALL 0x0d #define _EMUX_OSS_NOTEOFF_ALL 0x0e #define _EMUX_OSS_CHN_PRESSURE 0x0f #define _EMUX_OSS_EQUALIZER 0x11 #define _EMUX_OSS_MODE_FLAG 0x80 #define _EMUX_OSS_COOKED_FLAG 0x40 /* not supported */ #define _EMUX_OSS_MODE_VALUE_MASK 0x3F /* * mode type definitions */ enum { /* 0*/ EMUX_MD_EXCLUSIVE_OFF, /* obsolete */ /* 1*/ EMUX_MD_EXCLUSIVE_ON, /* obsolete */ /* 2*/ EMUX_MD_VERSION, /* read only */ /* 3*/ EMUX_MD_EXCLUSIVE_SOUND, /* 0/1: exclusive note on (default=1) */ /* 4*/ EMUX_MD_REALTIME_PAN, /* 0/1: do realtime pan change (default=1) */ /* 5*/ EMUX_MD_GUS_BANK, /* bank number for GUS patches (default=0) */ /* 6*/ EMUX_MD_KEEP_EFFECT, /* 0/1: keep effect values, (default=0) */ /* 7*/ EMUX_MD_ZERO_ATTEN, /* attenuation of max volume (default=32) */ /* 8*/ EMUX_MD_CHN_PRIOR, /* 0/1: set MIDI channel priority mode (default=1) */ /* 9*/ EMUX_MD_MOD_SENSE, /* integer: modwheel sensitivity (def=18) */ /*10*/ EMUX_MD_DEF_PRESET, /* integer: default preset number (def=0) */ /*11*/ EMUX_MD_DEF_BANK, /* integer: default bank number (def=0) */ /*12*/ EMUX_MD_DEF_DRUM, /* integer: default drumset number (def=0) */ /*13*/ EMUX_MD_TOGGLE_DRUM_BANK, /* 0/1: toggle drum flag with bank# (def=0) */ /*14*/ EMUX_MD_NEW_VOLUME_CALC, /* 0/1: volume calculation mode (def=1) */ /*15*/ EMUX_MD_CHORUS_MODE, /* integer: chorus mode (def=2) */ /*16*/ EMUX_MD_REVERB_MODE, /* integer: chorus mode (def=4) */ /*17*/ EMUX_MD_BASS_LEVEL, /* integer: bass level (def=5) */ /*18*/ EMUX_MD_TREBLE_LEVEL, /* integer: treble level (def=9) */ /*19*/ EMUX_MD_DEBUG_MODE, /* integer: debug level (def=0) */ /*20*/ EMUX_MD_PAN_EXCHANGE, /* 0/1: exchange panning direction (def=0) */ EMUX_MD_END, }; /* * effect parameters */ enum { /* modulation envelope parameters */ /* 0*/ EMUX_FX_ENV1_DELAY, /* WORD: ENVVAL */ /* 1*/ EMUX_FX_ENV1_ATTACK, /* BYTE: up ATKHLD */ /* 2*/ EMUX_FX_ENV1_HOLD, /* BYTE: lw ATKHLD */ /* 3*/ EMUX_FX_ENV1_DECAY, /* BYTE: lw DCYSUS */ /* 4*/ EMUX_FX_ENV1_RELEASE, /* BYTE: lw DCYSUS */ /* 5*/ EMUX_FX_ENV1_SUSTAIN, /* BYTE: up DCYSUS */ /* 6*/ EMUX_FX_ENV1_PITCH, /* BYTE: up PEFE */ /* 7*/ EMUX_FX_ENV1_CUTOFF, /* BYTE: lw PEFE */ /* volume envelope parameters */ /* 8*/ EMUX_FX_ENV2_DELAY, /* WORD: ENVVOL */ /* 9*/ EMUX_FX_ENV2_ATTACK, /* BYTE: up ATKHLDV */ /*10*/ EMUX_FX_ENV2_HOLD, /* BYTE: lw ATKHLDV */ /*11*/ EMUX_FX_ENV2_DECAY, /* BYTE: lw DCYSUSV */ /*12*/ EMUX_FX_ENV2_RELEASE, /* BYTE: lw DCYSUSV */ /*13*/ EMUX_FX_ENV2_SUSTAIN, /* BYTE: up DCYSUSV */ /* LFO1 (tremolo & vibrato) parameters */ /*14*/ EMUX_FX_LFO1_DELAY, /* WORD: LFO1VAL */ /*15*/ EMUX_FX_LFO1_FREQ, /* BYTE: lo TREMFRQ */ /*16*/ EMUX_FX_LFO1_VOLUME, /* BYTE: up TREMFRQ */ /*17*/ EMUX_FX_LFO1_PITCH, /* BYTE: up FMMOD */ /*18*/ EMUX_FX_LFO1_CUTOFF, /* BYTE: lo FMMOD */ /* LFO2 (vibrato) parameters */ /*19*/ EMUX_FX_LFO2_DELAY, /* WORD: LFO2VAL */ /*20*/ EMUX_FX_LFO2_FREQ, /* BYTE: lo FM2FRQ2 */ /*21*/ EMUX_FX_LFO2_PITCH, /* BYTE: up FM2FRQ2 */ /* Other overall effect parameters */ /*22*/ EMUX_FX_INIT_PITCH, /* SHORT: pitch offset */ /*23*/ EMUX_FX_CHORUS, /* BYTE: chorus effects send (0-255) */ /*24*/ EMUX_FX_REVERB, /* BYTE: reverb effects send (0-255) */ /*25*/ EMUX_FX_CUTOFF, /* BYTE: up IFATN */ /*26*/ EMUX_FX_FILTERQ, /* BYTE: up CCCA */ /* Sample / loop offset changes */ /*27*/ EMUX_FX_SAMPLE_START, /* SHORT: offset */ /*28*/ EMUX_FX_LOOP_START, /* SHORT: offset */ /*29*/ EMUX_FX_LOOP_END, /* SHORT: offset */ /*30*/ EMUX_FX_COARSE_SAMPLE_START, /* SHORT: upper word offset */ /*31*/ EMUX_FX_COARSE_LOOP_START, /* SHORT: upper word offset */ /*32*/ EMUX_FX_COARSE_LOOP_END, /* SHORT: upper word offset */ /*33*/ EMUX_FX_ATTEN, /* BYTE: lo IFATN */ EMUX_FX_END, }; /* number of effects */ #define EMUX_NUM_EFFECTS EMUX_FX_END /* effect flag values */ #define EMUX_FX_FLAG_OFF 0 #define EMUX_FX_FLAG_SET 1 #define EMUX_FX_FLAG_ADD 2 #endif /* __SOUND_EMUX_LEGACY_H */ 4/xfrm4_policy.c?id=39cb2c9a316e77f6dfba96c543e55b6672d5a37e'>patch) tree98fe974ee4e20121253de7f61fc8d01bdb3821c1 /net/ipv4/xfrm4_policy.c parent2c5d9555d6d937966d79d4c6529a5f7b9206e405 (diff)
drm/i915: Check for NULL i915_vma in intel_unpin_fb_obj()
I've seen this trigger twice now, where the i915_gem_object_to_ggtt() call in intel_unpin_fb_obj() returns NULL, resulting in an oops immediately afterwards as the (inlined) call to i915_vma_unpin_fence() tries to dereference it. It seems to be some race condition where the object is going away at shutdown time, since both times happened when shutting down the X server. The call chains were different: - VT ioctl(KDSETMODE, KD_TEXT): intel_cleanup_plane_fb+0x5b/0xa0 [i915] drm_atomic_helper_cleanup_planes+0x6f/0x90 [drm_kms_helper] intel_atomic_commit_tail+0x749/0xfe0 [i915] intel_atomic_commit+0x3cb/0x4f0 [i915] drm_atomic_commit+0x4b/0x50 [drm] restore_fbdev_mode+0x14c/0x2a0 [drm_kms_helper] drm_fb_helper_restore_fbdev_mode_unlocked+0x34/0x80 [drm_kms_helper] drm_fb_helper_set_par+0x2d/0x60 [drm_kms_helper] intel_fbdev_set_par+0x18/0x70 [i915] fb_set_var+0x236/0x460 fbcon_blank+0x30f/0x350 do_unblank_screen+0xd2/0x1a0 vt_ioctl+0x507/0x12a0 tty_ioctl+0x355/0xc30 do_vfs_ioctl+0xa3/0x5e0 SyS_ioctl+0x79/0x90 entry_SYSCALL_64_fastpath+0x13/0x94 - i915 unpin_work workqueue: intel_unpin_work_fn+0x58/0x140 [i915] process_one_work+0x1f1/0x480 worker_thread+0x48/0x4d0 kthread+0x101/0x140 and this patch purely papers over the issue by adding a NULL pointer check and a WARN_ON_ONCE() to avoid the oops that would then generally make the machine unresponsive. Other callers of i915_gem_object_to_ggtt() seem to also check for the returned pointer being NULL and warn about it, so this clearly has happened before in other places. [ Reported it originally to the i915 developers on Jan 8, applying the ugly workaround on my own now after triggering the problem for the second time with no feedback. This is likely to be the same bug reported as https://bugs.freedesktop.org/show_bug.cgi?id=98829 https://bugs.freedesktop.org/show_bug.cgi?id=99134 which has a patch for the underlying problem, but it hasn't gotten to me, so I'm applying the workaround. ] Cc: Daniel Vetter <daniel.vetter@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Imre Deak <imre.deak@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'net/ipv4/xfrm4_policy.c')