diff options
| author | Archana Sriram <apsrir@codeaurora.org> | 2020-10-18 23:34:04 +0530 |
|---|---|---|
| committer | Kamal Agrawal <kamaagra@codeaurora.org> | 2020-11-10 08:22:19 +0530 |
| commit | 703cccfc832e2c42abdfb3eb03e7645059f0b7c2 (patch) | |
| tree | 207fd0847e05dfb40365a86957a7b8e2b47edb8f /drivers/gpu/msm/kgsl_sharedmem.c | |
| parent | b81c4ac933f0bcbfa2bad5886c4013f8da52c86a (diff) | |
msm: kgsl: Compare pid pointer instead of TGID for a new process
There is a possibility of sharing process_private between two unrelated
processes due to PID wrapping. In kgsl_process_private_new(), instead
of checking numeric TGID, compare the unique pid pointer of the current
process with that of the existing processes in kgsl process list to
allow sharing of process_private data judiciously. Also, in all required
functions get TGID/PID of a process from its struct pid.
Change-Id: I0e3d5d79275cdb3f3c304fb36322ad56b0d0b227
Signed-off-by: Archana Sriram <apsrir@codeaurora.org>
Signed-off-by: Kamal Agrawal <kamaagra@codeaurora.org>
Diffstat (limited to 'drivers/gpu/msm/kgsl_sharedmem.c')
| -rw-r--r-- | drivers/gpu/msm/kgsl_sharedmem.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/msm/kgsl_sharedmem.c b/drivers/gpu/msm/kgsl_sharedmem.c index 4c54553e9977..b233211620da 100644 --- a/drivers/gpu/msm/kgsl_sharedmem.c +++ b/drivers/gpu/msm/kgsl_sharedmem.c @@ -1,4 +1,4 @@ -/* Copyright (c) 2002,2007-2017 The Linux Foundation. All rights reserved. +/* Copyright (c) 2002,2007-2017,2020, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and @@ -202,7 +202,7 @@ void kgsl_process_init_sysfs(struct kgsl_device *device, /* Keep private valid until the sysfs enries are removed. */ kgsl_process_private_get(private); - snprintf(name, sizeof(name), "%d", private->pid); + snprintf(name, sizeof(name), "%d", pid_nr(private->pid)); if (kobject_init_and_add(&private->kobj, &ktype_mem_entry, kgsl_driver.prockobj, name)) { |