linux/drivers/gpu/drm/amd/amdgpu/amdgpu_fdinfo.c, branch v5.17Mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/
https://git.shady.money/linux/atom?h=v5.172021-08-31T18:20:40Zdrm/amdgpu: fix fdinfo race with process exit2021-08-31T18:20:40ZPhilip YangPhilip.Yang@amd.com2021-07-29T21:19:54Zurn:sha1:d7eff46c214c036606dd3cd305bd5a128aecfe8c
Get process vm root BO ref in case process is exiting and root BO is
freed, to avoid NULL pointer dereference backtrace:
BUG: unable to handle kernel NULL pointer dereference at
0000000000000000
Call Trace:
amdgpu_show_fdinfo+0xfe/0x2a0 [amdgpu]
seq_show+0x12c/0x180
seq_read+0x153/0x410
vfs_read+0x91/0x140[ 3427.206183] ksys_read+0x4f/0xb0
do_syscall_64+0x5b/0x1a0
entry_SYSCALL_64_after_hwframe+0x65/0xca
Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdgpu: remove amdgpu_vm_pt2021-06-15T21:25:42ZNirmoy Dasnirmoy.das@amd.com2021-06-15T21:23:11Zurn:sha1:391629bdfcb9014e8bcd1be216b59854877e70ed
Page table entries are now in embedded in VM BO, so
we do not need struct amdgpu_vm_pt. This patch replaces
struct amdgpu_vm_pt with struct amdgpu_vm_bo_base.
Signed-off-by: Nirmoy Das <nirmoy.das@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm/amdgpu: Add show_fdinfo() interface2021-05-05T07:26:53ZRoy SunRoy.Sun@amd.com2021-04-26T06:27:01Zurn:sha1:874442541133f78c78b6880b8cc495bab5c61704
Tracking devices, process info and fence info using
/proc/pid/fdinfo
Signed-off-by: David M Nieto <David.Nieto@amd.com>
Signed-off-by: Roy Sun <Roy.Sun@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210426062701.39732-2-Roy.Sun@amd.com