/* * DMA buffer calls */ int DMAbuf_open(int dev, int mode); int DMAbuf_release(int dev, int mode); int DMAbuf_getwrbuffer(int dev, char **buf, int *size, int dontblock); int DMAbuf_getrdbuffer(int dev, char **buf, int *len, int dontblock); int DMAbuf_rmchars(int dev, int buff_no, int c); int DMAbuf_start_output(int dev, int buff_no, int l); int DMAbuf_move_wrpointer(int dev, int l); /* int DMAbuf_ioctl(int dev, unsigned int cmd, void __user *arg, int local); */ void DMAbuf_init(int dev, int dma1, int dma2); void DMAbuf_deinit(int dev); int DMAbuf_start_dma (int dev, unsigned long physaddr, int count, int dma_mode); void DMAbuf_inputintr(int dev); void DMAbuf_outputintr(int dev, int underflow_flag); struct dma_buffparms; int DMAbuf_space_in_queue (int dev); int DMAbuf_activate_recording (int dev, struct dma_buffparms *dmap); int DMAbuf_get_buffer_pointer (int dev, struct dma_buffparms *dmap, int direction); void DMAbuf_launch_output(int dev, struct dma_buffparms *dmap); unsigned int DMAbuf_poll(struct file *file, int dev, poll_table *wait); void DMAbuf_start_devices(unsigned int devmask); void DMAbuf_reset (int dev); int DMAbuf_sync (int dev); /* * System calls for /dev/dsp and /dev/audio (audio.c) */ int audio_read (int dev, struct file *file, char __user *buf, int count); int audio_write (int dev, struct file *file, const char __user *buf, int count); int audio_open (int dev, struct file *file); void audio_release (int dev, struct file *file); int audio_ioctl (int dev, struct file *file, unsigned int cmd, void __user *arg); void audio_init_devices (void); void reorganize_buffers (int dev, struct dma_buffparms *dmap, int recording); /* * System calls for the /dev/sequencer */ int sequencer_read (int dev, struct file *file, char __user *buf, int count); int sequencer_write (int dev, struct file *file, const char __user *buf, int count); int sequencer_open (int dev, struct file *file); void sequencer_release (int dev, struct file *file); int sequencer_ioctl (int dev, struct file *file, unsigned int cmd, void __user *arg); unsigned int sequencer_poll(int dev, struct file *file, poll_table * wait); void sequencer_init (void); void sequencer_unload (void); void sequencer_timer(unsigned long dummy); int note_to_freq(int note_num); unsigned long compute_finetune(unsigned long base_freq, int bend, int range, int vibrato_bend); void seq_input_event(unsigned char *event, int len); void seq_copy_to_input (unsigned char *event, int len); /* * System calls for the /dev/midi */ int MIDIbuf_read (int dev, struct file *file, char __user *buf, int count); int MIDIbuf_write (int dev, struct file *file, const char __user *buf, int count); int MIDIbuf_open (int dev, struct file *file); void MIDIbuf_release (int dev, struct file *file); int MIDIbuf_ioctl (int dev, struct file *file, unsigned int cmd, void __user *arg); unsigned int MIDIbuf_poll(int dev, struct file *file, poll_table * wait); int MIDIbuf_avail(int dev); void MIDIbuf_bytes_received(int dev, unsigned char *buf, int count); /* From soundcard.c */ void request_sound_timer (int count); void sound_stop_timer(void); void conf_printf(char *name, struct address_info *hw_config); void conf_printf2(char *name, int base, int irq, int dma, int dma2); /* From sound_timer.c */ void sound_timer_interrupt(void); void sound_timer_syncinterval(unsigned int new_usecs); /* From midi_synth.c */ void do_midi_msg (int synthno, unsigned char *msg, int mlen); b028f56a971a2e4d8d7887540a144eeefcd4ab'>midi.c
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authorMaarten Lankhorst <maarten.lankhorst@linux.intel.com>2017-01-31 10:25:25 +0100
committerDaniel Vetter <daniel.vetter@ffwll.ch>2017-01-31 13:41:46 +0100
commit92c715fca907686f5298220ece53423e38ba3aed (patch)
tree286158fdad04c9b54955350abb95d4f1c0dc860a /sound/soc/atmel/Kconfig
parente6e7b48b295afa5a5ab440de0a94d9ad8b3ce2d0 (diff)
drm/atomic: Fix double free in drm_atomic_state_default_clear
drm_atomic_helper_page_flip and drm_atomic_ioctl set their own events in crtc_state->event. But when it's set the event is freed in 2 places. Solve this by only freeing the event in the atomic ioctl when it allocated its own event. This has been broken twice. The first time when the code was introduced, but only in the corner case when an event is allocated, but more crtc's were included by atomic check and then failing. This can mostly happen when you do an atomic modeset in i915 and the display clock is changed, which forces all crtc's to be included to the state. This has been broken worse by adding in-fences support, which caused the double free to be done unconditionally. [IGT] kms_rotation_crc: starting subtest primary-rotation-180 ============================================================================= BUG kmalloc-128 (Tainted: G U ): Object already free ----------------------------------------------------------------------------- Disabling lock debugging due to kernel taint INFO: Allocated in drm_atomic_helper_setup_commit+0x285/0x2f0 [drm_kms_helper] age=0 cpu=3 pid=1529 ___slab_alloc+0x308/0x3b0 __slab_alloc+0xd/0x20 kmem_cache_alloc_trace+0x92/0x1c0 drm_atomic_helper_setup_commit+0x285/0x2f0 [drm_kms_helper] intel_atomic_commit+0x35/0x4f0 [i915] drm_atomic_commit+0x46/0x50 [drm] drm_mode_atomic_ioctl+0x7d4/0xab0 [drm] drm_ioctl+0x2b3/0x490 [drm] do_vfs_ioctl+0x69c/0x700 SyS_ioctl+0x4e/0x80 entry_SYSCALL_64_fastpath+0x13/0x94 INFO: Freed in drm_event_cancel_free+0xa3/0xb0 [drm] age=0 cpu=3 pid=1529 __slab_free+0x48/0x2e0 kfree+0x159/0x1a0 drm_event_cancel_free+0xa3/0xb0 [drm] drm_mode_atomic_ioctl+0x86d/0xab0 [drm] drm_ioctl+0x2b3/0x490 [drm] do_vfs_ioctl+0x69c/0x700 SyS_ioctl+0x4e/0x80 entry_SYSCALL_64_fastpath+0x13/0x94 INFO: Slab 0xffffde1f0997b080 objects=17 used=2 fp=0xffff92fb65ec2578 flags=0x200000000008101 INFO: Object 0xffff92fb65ec2578 @offset=1400 fp=0xffff92fb65ec2ae8 Redzone ffff92fb65ec2570: bb bb bb bb bb bb bb bb ........ Object ffff92fb65ec2578: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff92fb65ec2588: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff92fb65ec2598: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff92fb65ec25a8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff92fb65ec25b8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff92fb65ec25c8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff92fb65ec25d8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object ffff92fb65ec25e8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk. Redzone ffff92fb65ec25f8: bb bb bb bb bb bb bb bb ........ Padding ffff92fb65ec2738: 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZ CPU: 3 PID: 180 Comm: kworker/3:2 Tainted: G BU 4.10.0-rc6-patser+ #5039 Hardware name: /NUC5PPYB, BIOS PYBSWCEL.86A.0031.2015.0601.1712 06/01/2015 Workqueue: events intel_atomic_helper_free_state [i915] Call Trace: dump_stack+0x4d/0x6d print_trailer+0x20c/0x220 free_debug_processing+0x1c6/0x330 ? drm_atomic_state_default_clear+0xf7/0x1c0 [drm] __slab_free+0x48/0x2e0 ? drm_atomic_state_default_clear+0xf7/0x1c0 [drm] kfree+0x159/0x1a0 drm_atomic_state_default_clear+0xf7/0x1c0 [drm] ? drm_atomic_state_clear+0x30/0x30 [drm] intel_atomic_state_clear+0xd/0x20 [i915] drm_atomic_state_clear+0x1a/0x30 [drm] __drm_atomic_state_free+0x13/0x60 [drm] intel_atomic_helper_free_state+0x5d/0x70 [i915] process_one_work+0x260/0x4a0 worker_thread+0x2d1/0x4f0 kthread+0x127/0x130 ? process_one_work+0x4a0/0x4a0 ? kthread_stop+0x120/0x120 ret_from_fork+0x29/0x40 FIX kmalloc-128: Object at 0xffff92fb65ec2578 not freed Fixes: 3b24f7d67581 ("drm/atomic: Add struct drm_crtc_commit to track async updates") Fixes: 9626014258a5 ("drm/fence: add in-fences support") Cc: <stable@vger.kernel.org> # v4.8+ Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/1485854725-27640-1-git-send-email-maarten.lankhorst@linux.intel.com
Diffstat (limited to 'sound/soc/atmel/Kconfig')