menuconfig 6LOWPAN tristate "6LoWPAN Support" depends on IPV6 ---help--- This enables IPv6 over Low power Wireless Personal Area Network - "6LoWPAN" which is supported by IEEE 802.15.4 or Bluetooth stacks. config 6LOWPAN_DEBUGFS bool "6LoWPAN debugfs support" depends on 6LOWPAN depends on DEBUG_FS ---help--- This enables 6LoWPAN debugfs support. For example to manipulate IPHC context information at runtime. menuconfig 6LOWPAN_NHC tristate "Next Header and Generic Header Compression Support" depends on 6LOWPAN default y ---help--- Support for next header and generic header compression defined in RFC6282 and RFC7400. if 6LOWPAN_NHC config 6LOWPAN_NHC_DEST tristate "Destination Options Header Support" default y ---help--- 6LoWPAN IPv6 Destination Options Header compression according to RFC6282. config 6LOWPAN_NHC_FRAGMENT tristate "Fragment Header Support" default y ---help--- 6LoWPAN IPv6 Fragment Header compression according to RFC6282. config 6LOWPAN_NHC_HOP tristate "Hop-by-Hop Options Header Support" default y ---help--- 6LoWPAN IPv6 Hop-by-Hop Options Header compression according to RFC6282. config 6LOWPAN_NHC_IPV6 tristate "IPv6 Header Support" default y ---help--- 6LoWPAN IPv6 Header compression according to RFC6282. config 6LOWPAN_NHC_MOBILITY tristate "Mobility Header Support" default y ---help--- 6LoWPAN IPv6 Mobility Header compression according to RFC6282. config 6LOWPAN_NHC_ROUTING tristate "Routing Header Support" default y ---help--- 6LoWPAN IPv6 Routing Header compression according to RFC6282. config 6LOWPAN_NHC_UDP tristate "UDP Header Support" default y ---help--- 6LoWPAN IPv6 UDP Header compression according to RFC6282. config 6LOWPAN_GHC_EXT_HDR_HOP tristate "GHC Hop-by-Hop Options Header Support" ---help--- 6LoWPAN IPv6 Hop-by-Hop option generic header compression according to RFC7400. config 6LOWPAN_GHC_UDP tristate "GHC UDP Support" ---help--- 6LoWPAN IPv6 UDP generic header compression according to RFC7400. config 6LOWPAN_GHC_ICMPV6 tristate "GHC ICMPv6 Support" ---help--- 6LoWPAN IPv6 ICMPv6 generic header compression according to RFC7400. config 6LOWPAN_GHC_EXT_HDR_DEST tristate "GHC Destination Options Header Support" ---help--- 6LoWPAN IPv6 destination option generic header compression according to RFC7400. config 6LOWPAN_GHC_EXT_HDR_FRAG tristate "GHC Fragmentation Options Header Support" ---help--- 6LoWPAN IPv6 fragmentation option generic header compression according to RFC7400. config 6LOWPAN_GHC_EXT_HDR_ROUTE tristate "GHC Routing Options Header Support" ---help--- 6LoWPAN IPv6 routing option generic header compression according to RFC7400. endif 07686f5298220ece53423e38ba3aed'>root/drivers/usb/core/buffer.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 /drivers/usb/core/buffer.c
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 'drivers/usb/core/buffer.c')