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9f8d5acfbbcfd617697021ae353b935090eb7b56
linux-nvgpu/drivers/gpu/nvgpu/os/linux
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Sagar Kamble 9f8d5acfbb gpu: nvgpu: fix the return value from gk20a_mm_pin 
The return value in case of failure of dma_buf_attach and
dma_buf_map_attachment was ignored and NULL was returned.
This would lead to following null pointer access. Fix it.

[  293.622880] Unable to handle kernel NULL pointer dereference
               at virtual address 0000000000000000
...
[  293.711860] Hardware name: quill (DT)
[  293.720393] pc : nvgpu_linux_sgt_create+0x14/0xa8 [nvgpu]
[  293.725871] lr : nvgpu_vm_map_linux+0x104/0x1c8 [nvgpu]
...
[  293.813934] Call trace:
[  293.816455]  nvgpu_linux_sgt_create+0x14/0xa8 [nvgpu]
[  293.821573]  nvgpu_vm_map_linux+0x104/0x1c8 [nvgpu]
[  293.826515]  nvgpu_vm_map_buffer+0x120/0x290 [nvgpu]
[  293.831542]  gk20a_as_dev_ioctl+0x364/0xfb8 [nvgpu]
[  293.836416]  ksys_ioctl+0x17c/0xba8
[  293.839899]  __arm64_sys_ioctl+0x18/0x28
[  293.843817]  do_el0_svc+0xf8/0x1b8
[  293.847214]  el0_sync_handler+0x11c/0x28c
[  293.851217]  el0_sync+0x140/0x180

Bug 2834141

Change-Id: I0d9e863d0326946c8091bfb1b907b62b055f7272
Signed-off-by: Sagar Kamble <skamble@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2332204
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: automaticguardword <automaticguardword@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
2020-12-15 14:13:28 -06:00
..
sdl
gpu: nvgpu: use GPL license for linux code
2020-12-15 14:10:29 -06:00
vgpu
gpu: nvgpu: require deferred cleanup for aggressive sync destroy
2020-12-15 14:13:28 -06:00
bsearch.c
gpu: nvgpu: use GPL license for linux code
2020-12-15 14:10:29 -06:00
cde_gm20b.c
gpu: nvgpu: use GPL license for linux code
2020-12-15 14:10:29 -06:00
cde_gm20b.h
gpu: nvgpu: use GPL license for linux code
2020-12-15 14:10:29 -06:00
cde_gp10b.c
gpu: nvgpu: use GPL license for linux code
2020-12-15 14:10:29 -06:00
cde_gp10b.h
gpu: nvgpu: use GPL license for linux code
2020-12-15 14:10:29 -06:00
cde.c
gpu: nvgpu: extract job from channel.c
2020-12-15 14:13:28 -06:00
cde.h
gpu: nvgpu: rename tsg_gk20a and channel_gk20a structs
2019-05-06 02:56:53 -07:00
channel.h
gpu: nvgpu: rename tsg_gk20a and channel_gk20a structs
2019-05-06 02:56:53 -07:00
clk.c
gpu: nvgpu: cond. compilation of tegra dvfs code
2020-12-15 14:13:28 -06:00
clk.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
comptags.c
gpu: nvgpu: add CONFIG_NVGPU_DMABUF_HAS_DRVDATA
2020-12-15 14:13:28 -06:00
cond.c
gpu: nvgpu: nvgpu_cond_signal to return void
2019-01-31 12:04:10 -08:00
debug_allocator.c
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug_allocator.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug_bios.c
nvgpu: gpu: include qnx_init unit in doxygen documentation
2020-12-15 14:05:52 -06:00
debug_bios.h
gpu: nvgpu: add bios debugfs node
2018-06-27 07:30:06 -07:00
debug_cde.c
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug_cde.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug_ce.c
gpu: nvgpu: prepare ce_app.h header
2020-12-15 14:10:29 -06:00
debug_ce.h
gpu: nvgpu: move ce code to common/ce and hal/ce
2019-04-19 13:55:11 -07:00
debug_clk_gm20b.c
gpu: nvgpu: Refactor Clock unit.
2020-12-15 14:13:28 -06:00
debug_clk_gm20b.h
gpu: nvgpu: move gm20b clk debugfs to linux
2018-09-05 04:51:40 -07:00
debug_clk_tu104.c
gpu: nvgpu: Reactor clk_fll unit
2020-12-15 14:13:28 -06:00
debug_clk_tu104.h
gpu: nvgpu: Initialize clk counters for dGPU clocks
2019-07-26 04:07:01 -07:00
debug_fecs_trace.c
nvgpu: gpu: include qnx_init unit in doxygen documentation
2020-12-15 14:05:52 -06:00
debug_fecs_trace.h
gpu: nvgpu: rename feature Make and C flags
2019-06-11 09:46:24 -07:00
debug_fifo.c
gpu: nvgpu: rename tsg_gk20a*/gk20a_tsg* functions.
2019-05-17 01:49:27 -07:00
debug_fifo.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug_gr.c
gpu: nvgpu: Add gr_priv header file
2019-04-22 03:15:09 -07:00
debug_gr.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug_hal.c
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug_hal.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug_kmem.c
gpu: nvgpu: Fix LibC MISRA 17.7 in os/linux
2018-10-31 15:25:23 -07:00
debug_kmem.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug_ltc.c
nvgpu: gpu: include qnx_init unit in doxygen documentation
2020-12-15 14:05:52 -06:00
debug_ltc.h
gpu: nvgpu: debugfs node to enable/disable ltc_illegal_compstat intr
2018-07-24 16:10:58 -07:00
debug_pmgr.c
gpu: nvgpu: Split pmgr.h into private and public
2019-01-10 20:09:38 -08:00
debug_pmgr.h
gpu: nvgpu: move pmgr debugfs to linux
2018-09-05 04:51:50 -07:00
debug_pmu.c
nvgpu: vgpu: no debugfs entries that rely on PMU
2020-12-15 14:05:52 -06:00
debug_pmu.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug_s_param.c
gpu: nvgpu: Refactor Clock unit.
2020-12-15 14:13:28 -06:00
debug_s_param.h
gpu: nvgpu: Debugfs for S_param
2019-02-11 20:55:07 -08:00
debug_sched.c
gpu: nvgpu: add struct nvgpu_sched_ctrl to gk20a
2020-12-15 14:13:28 -06:00
debug_sched.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug_therm_tu104.c
gpu: nvgpu: Refactor Therm unit
2020-12-15 14:13:28 -06:00
debug_therm_tu104.h
gpu: nvgpu: Move from TSENSE to TSOSC for TU104
2019-06-13 23:05:43 -07:00
debug_volt.c
gpu: nvgpu: Segregate volt unit members based on their accessibility
2020-12-15 14:13:28 -06:00
debug_volt.h
gpu: nvgpu: Debugfs for Volt
2019-02-01 09:45:57 -08:00
debug_xve.c
gpu: nvgpu: Fix LibC MISRA 17.7 in os/linux
2018-10-31 15:25:23 -07:00
debug_xve.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
debug.c
gpu: nvgpu: move nvgpu_has_syncpoints
2020-12-15 14:13:28 -06:00
dmabuf_priv.c
gpu: nvgpu: fix the return value from gk20a_mm_pin
2020-12-15 14:13:28 -06:00
dmabuf_priv.h
gpu: nvgpu: add CONFIG_NVGPU_DMABUF_HAS_DRVDATA
2020-12-15 14:13:28 -06:00
dmabuf_vidmem.c
gpu: nvgpu: dma_buf_ops map unavailable in upstream
2020-12-15 14:13:28 -06:00
dmabuf_vidmem.h
gpu: nvgpu: add CONFIG_NVGPU_DMABUF_HAS_DRVDATA
2020-12-15 14:13:28 -06:00
dmabuf.c
gpu: nvgpu: fix the return value from gk20a_mm_pin
2020-12-15 14:13:28 -06:00
dmabuf.h
gpu: nvgpu: add CONFIG_NVGPU_DMABUF_HAS_DRVDATA
2020-12-15 14:13:28 -06:00
driver_common.c
gpu: nvgpu: remove aggressive sync init from platform
2020-12-15 14:13:28 -06:00
driver_common.h
gpu: nvgpu: fix MISRA Rule 8.6 violations
2020-12-15 14:05:52 -06:00
dt.c
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
ecc_sysfs.c
gpu: nvgpu: move header location of gk20a.h
2018-09-25 13:10:19 -07:00
fecs_trace_linux.c
gpu: nvgpu: remove "trace/events/gk20a.h" from QNX build
2020-12-15 14:13:28 -06:00
fecs_trace_linux.h
gpu: nvgpu: use GPL license for linux code
2020-12-15 14:10:29 -06:00
firmware.c
gpu: nvgpu: firmware: use u32 for flags
2019-02-20 23:05:04 -08:00
fuse.c
gpu: nvgpu: add CONFIG_NVGPU_TEGRA_FUSE
2020-12-15 14:13:28 -06:00
intr.c
gpu: nvgpu: remove "trace/events/gk20a.h" from QNX build
2020-12-15 14:13:28 -06:00
intr.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
io_usermode.c
gpu: nvgpu: move usermode to hal/fifo
2019-04-16 13:04:27 -07:00
ioctl_as.c
gpu: nvgpu: move nvgpu_has_syncpoints
2020-12-15 14:13:28 -06:00
ioctl_as.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
ioctl_channel.c
gpu: nvgpu: replace dma_buf_kmap with dma_buf_vmap
2020-12-15 14:13:28 -06:00
ioctl_channel.h
gpu: nvgpu: fix MISRA Rule 8.6 violations
2020-12-15 14:05:52 -06:00
ioctl_clk_arb.c
gpu: nvgpu: use READ_ONCE/WRITE_ONCE
2020-12-15 14:13:28 -06:00
ioctl_ctrl.c
gpu: nvgpu: Syncpoint invalid value to ~0.
2020-12-15 14:13:28 -06:00
ioctl_ctrl.h
gpu: nvgpu: provide usermode region via mmap
2018-10-29 08:04:25 -07:00
ioctl_dbg.c
gpu: nvgpu: update the config options & makefile
2020-12-15 14:13:28 -06:00
ioctl_dbg.h
gpu: nvgpu: Clean up ioctl_dbg.h
2018-07-05 21:48:44 -07:00
ioctl_tsg.c
gpu: nvgpu: add struct nvgpu_sched_ctrl to gk20a
2020-12-15 14:13:28 -06:00
ioctl_tsg.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
ioctl.c
gpu: nvgpu: rename feature Make and C flags
2019-06-11 09:46:24 -07:00
ioctl.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
kmem_priv.h
gpu: nvgpu: MISRA 14.4 boolean fixes
2018-11-07 10:35:13 -08:00
kmem.c
gpu: nvgpu: fix MISRA violations in kmem unit
2019-05-03 13:08:00 -07:00
linux-channel.c
gpu: nvgpu: use timespec64
2020-12-15 14:13:28 -06:00
linux-dma.c
gpu: nvgpu; fix MISRA errors in nvgpu.common.mm
2019-08-01 21:57:18 -07:00
linux-io.c
gpu: nvgpu: init: move out linux-specific APIs
2019-07-23 13:27:29 -07:00
log.c
gpu: nvgpu: fix MISRA 17.1 in logging functions
2020-12-15 14:05:52 -06:00
module_usermode.c
gpu: nvgpu: move usermode to hal/fifo
2019-04-16 13:04:27 -07:00
module_usermode.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
module.c
gpu: nvgpu: require deferred cleanup for aggressive sync destroy
2020-12-15 14:13:28 -06:00
module.h
gpu: nvgpu: fix MISRA Rule 8.6 violations
2020-12-15 14:05:52 -06:00
nvgpu_mem.c
gpu: nvgpu: update the config options & makefile
2020-12-15 14:13:28 -06:00
nvhost_priv.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
nvhost.c
gpu: nvgpu: linux: read current syncpt in set safe state
2020-12-15 14:13:28 -06:00
nvlink_probe.c
gpu: nvgpu: Hardcode nvlink speed to 20G
2020-12-15 14:13:28 -06:00
nvlink.c
gpu: nvgpu: rename feature Make and C flags
2019-06-11 09:46:24 -07:00
nvlink.h
gpu: nvgpu: shutdown nvlink in driver remove
2018-07-26 00:06:07 -07:00
os_fence_android_sema.c
gpu: nvgpu: rename tsg_gk20a and channel_gk20a structs
2019-05-06 02:56:53 -07:00
os_fence_android_syncpt.c
gpu: nvgpu: rename tsg_gk20a and channel_gk20a structs
2019-05-06 02:56:53 -07:00
os_fence_android.c
gpu: nvgpu: try syncpt fdget only if supported
2020-12-15 14:13:28 -06:00
os_linux.h
gpu: nvgpu: move nvgpu_has_syncpoints
2020-12-15 14:13:28 -06:00
os_ops_gm20b.c
gpu: nvgpu: fecs ctxsw trace for gm20b
2019-04-22 05:25:48 -07:00
os_ops_gm20b.h
gpu: nvgpu: linux: move os ops to a common file
2018-08-29 20:34:34 -07:00
os_ops_gp10b.c
gpu: nvgpu: move fecs trace debugfs to linux
2018-09-09 17:22:24 -07:00
os_ops_gp10b.h
gpu: nvgpu: linux: move os ops to a common file
2018-08-29 20:34:34 -07:00
os_ops_gv11b.c
gpu: nvgpu: move fecs trace debugfs to linux
2018-09-09 17:22:24 -07:00
os_ops_gv11b.h
gpu: nvgpu: move fecs trace debugfs to linux
2018-09-09 17:22:24 -07:00
os_ops_gv100.c
gpu: nvgpu: Initialize clk counters for dGPU clocks
2019-07-26 04:07:01 -07:00
os_ops_gv100.h
gpu: nvgpu: move gp106 clk debugfs to linux
2018-09-05 04:51:36 -07:00
os_ops_tu104.c
gpu: nvgpu: Initialize clk counters for dGPU clocks
2019-07-26 04:07:01 -07:00
os_ops_tu104.h
gpu: nvgpu: Remove the GPU-NEXT conditional
2018-11-08 19:35:09 -08:00
os_ops.c
gpu: nvgpu: update the config options & makefile
2020-12-15 14:13:28 -06:00
os_ops.h
gpu: nvgpu: linux: move os ops to a common file
2018-08-29 20:34:34 -07:00
os_sched.c
gpu: nvgpu: Fix MISRA 21.2 violations in log.h
2019-05-15 22:29:40 -07:00
pci_power.c
gpu: nvgpu: add sw quiesce
2019-08-27 10:37:21 -07:00
pci_power.h
gpu: nvgpu: add interface to power on-off gpu
2018-10-12 17:35:10 +05:30
pci.c
gpu: nvgpu: disable GC-OFF feature for all dGPUs
2020-12-15 14:13:28 -06:00
pci.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
platform_gk20a_tegra.c
gpu: nvgpu: remove unused include file
2020-12-15 14:13:28 -06:00
platform_gk20a_tegra.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
platform_gk20a.h
gpu: nvgpu: require deferred cleanup for aggressive sync destroy
2020-12-15 14:13:28 -06:00
platform_gp10b_tegra.c
gpu: nvgpu: add fuse clock support
2020-12-15 14:13:28 -06:00
platform_gp10b.h
gpu: nvgpu: add fuse clock support
2020-12-15 14:13:28 -06:00
platform_gv11b_tegra.c
gpu: nvgpu: add fuse clock support
2020-12-15 14:13:28 -06:00
rwsem.c
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
scale.c
gpu: nvgpu: add CONFIG_NVGPU_TEGRA_FUSE
2020-12-15 14:13:28 -06:00
scale.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
sched.c
gpu: nvgpu: add struct nvgpu_sched_ctrl to gk20a
2020-12-15 14:13:28 -06:00
sched.h
gpu: nvgpu: add struct nvgpu_sched_ctrl to gk20a
2020-12-15 14:13:28 -06:00
sim_pci.c
gpu: nvgpu: rmmod support in dgpu simulation
2019-08-21 23:38:56 -07:00
sim.c
gpu: nvgpu: move header location of gk20a.h
2018-09-25 13:10:19 -07:00
soc.c
gpu: nvgpu: move timer functions from soc files
2020-12-15 14:13:28 -06:00
sync_sema_android.c
gpu: nvgpu: rename tsg_gk20a and channel_gk20a structs
2019-05-06 02:56:53 -07:00
sync_sema_android.h
gpu: nvgpu: rename tsg_gk20a and channel_gk20a structs
2019-05-06 02:56:53 -07:00
sysfs.c
gpu: nvgpu: add CONFIG_NVGPU_TEGRA_FUSE
2020-12-15 14:13:28 -06:00
sysfs.h
gpu: nvgpu: Move Linux files away from common
2018-06-15 17:47:31 -07:00
thread.c
gpu: nvgpu: fix race for nvgpu_thread_stop
2020-12-15 14:10:29 -06:00
timers.c
gpu: nvgpu: move timer functions from soc files
2020-12-15 14:13:28 -06:00
vm.c
gpu: nvgpu: fix dbg log and comment in nvgpu_vm_find_mapping
2020-12-15 14:13:28 -06:00
vpr.c
gpu: nvgpu: use vpr resize enabled API
2019-08-28 14:24:19 -07:00