* [Bug 206695] New: kmemleak reports leaks in drivers/macintosh/windfarm
@ 2020-02-27 23:44 bugzilla-daemon
2020-02-27 23:45 ` [Bug 206695] " bugzilla-daemon
` (10 more replies)
0 siblings, 11 replies; 13+ messages in thread
From: bugzilla-daemon @ 2020-02-27 23:44 UTC (permalink / raw)
To: linuxppc-dev
https://bugzilla.kernel.org/show_bug.cgi?id=206695
Bug ID: 206695
Summary: kmemleak reports leaks in drivers/macintosh/windfarm
Product: Platform Specific/Hardware
Version: 2.5
Kernel Version: 5.6-rc3
Hardware: PPC-64
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: PPC-64
Assignee: platform_ppc-64@kernel-bugs.osdl.org
Reporter: erhard_f@mailbox.org
Regression: No
Created attachment 287687
--> https://bugzilla.kernel.org/attachment.cgi?id=287687&action=edit
kmemleak output (kernel 5.6-rc3, PowerMac G5 11,2)
kmemleak reports leaks from the windfarm module of my PowerMac G5 11,2:
[...]
unreferenced object 0xc00000047081f840 (size 32):
comm "kwindfarm", pid 203, jiffies 4294880630 (age 5552.877s)
hex dump (first 32 bytes):
c8 06 02 7f ff 02 ff 01 fb bf 00 41 00 20 00 00 ...........A. ..
00 07 89 37 00 a0 00 00 00 00 00 00 00 00 00 00 ...7............
backtrace:
[<0000000083f0a65c>] .smu_sat_get_sdb_partition+0xc4/0x2d0
[windfarm_smu_sat]
[<000000003010fcb7>] .pm112_wf_notify+0x104c/0x13bc [windfarm_pm112]
[<00000000b958b2dd>] .notifier_call_chain+0xa8/0x180
[<0000000070490868>] .blocking_notifier_call_chain+0x64/0x90
[<00000000131d8149>] .wf_thread_func+0x114/0x1a0
[<000000000d54838d>] .kthread+0x13c/0x190
[<00000000669b72bc>] .ret_from_kernel_thread+0x58/0x64
unreferenced object 0xc0000004737089f0 (size 16):
comm "kwindfarm", pid 203, jiffies 4294880879 (age 5552.050s)
hex dump (first 16 bytes):
c4 04 01 7f 22 11 e0 e6 ff 55 7b 12 ec 11 00 00 ...."....U{.....
backtrace:
[<0000000083f0a65c>] .smu_sat_get_sdb_partition+0xc4/0x2d0
[windfarm_smu_sat]
[<00000000b94ef7e1>] .pm112_wf_notify+0x1294/0x13bc [windfarm_pm112]
[<00000000b958b2dd>] .notifier_call_chain+0xa8/0x180
[<0000000070490868>] .blocking_notifier_call_chain+0x64/0x90
[<00000000131d8149>] .wf_thread_func+0x114/0x1a0
[<000000000d54838d>] .kthread+0x13c/0x190
[<00000000669b72bc>] .ret_from_kernel_thread+0x58/0x64
unreferenced object 0xc00000047081fdc0 (size 32):
comm "kwindfarm", pid 203, jiffies 4294881067 (age 5551.427s)
hex dump (first 32 bytes):
c9 06 02 7f ff 02 ff 01 fb bf 00 41 00 20 00 00 ...........A. ..
00 07 89 37 00 a0 00 00 00 00 00 00 00 00 00 00 ...7............
backtrace:
[<0000000083f0a65c>] .smu_sat_get_sdb_partition+0xc4/0x2d0
[windfarm_smu_sat]
[<000000003010fcb7>] .pm112_wf_notify+0x104c/0x13bc [windfarm_pm112]
[<00000000b958b2dd>] .notifier_call_chain+0xa8/0x180
[<0000000070490868>] .blocking_notifier_call_chain+0x64/0x90
[<00000000131d8149>] .wf_thread_func+0x114/0x1a0
[<000000000d54838d>] .kthread+0x13c/0x190
[<00000000669b72bc>] .ret_from_kernel_thread+0x58/0x64
unreferenced object 0xc000000473708b60 (size 16):
comm "kwindfarm", pid 203, jiffies 4294881320 (age 5550.587s)
hex dump (first 16 bytes):
c5 04 01 7f 22 11 e0 e6 ff 55 7b 12 ec 11 00 00 ...."....U{.....
backtrace:
[<0000000083f0a65c>] .smu_sat_get_sdb_partition+0xc4/0x2d0
[windfarm_smu_sat]
[<00000000b94ef7e1>] .pm112_wf_notify+0x1294/0x13bc [windfarm_pm112]
[<00000000b958b2dd>] .notifier_call_chain+0xa8/0x180
[<0000000070490868>] .blocking_notifier_call_chain+0x64/0x90
[<00000000131d8149>] .wf_thread_func+0x114/0x1a0
[<000000000d54838d>] .kthread+0x13c/0x190
[<00000000669b72bc>] .ret_from_kernel_thread+0x58/0x64
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* [Bug 206695] kmemleak reports leaks in drivers/macintosh/windfarm
2020-02-27 23:44 [Bug 206695] New: kmemleak reports leaks in drivers/macintosh/windfarm bugzilla-daemon
@ 2020-02-27 23:45 ` bugzilla-daemon
2020-02-27 23:45 ` bugzilla-daemon
` (9 subsequent siblings)
10 siblings, 0 replies; 13+ messages in thread
From: bugzilla-daemon @ 2020-02-27 23:45 UTC (permalink / raw)
To: linuxppc-dev
https://bugzilla.kernel.org/show_bug.cgi?id=206695
--- Comment #1 from Erhard F. (erhard_f@mailbox.org) ---
Created attachment 287689
--> https://bugzilla.kernel.org/attachment.cgi?id=287689&action=edit
dmesg (kernel 5.6-rc3, PowerMac G5 11,2)
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* [Bug 206695] kmemleak reports leaks in drivers/macintosh/windfarm
2020-02-27 23:44 [Bug 206695] New: kmemleak reports leaks in drivers/macintosh/windfarm bugzilla-daemon
2020-02-27 23:45 ` [Bug 206695] " bugzilla-daemon
@ 2020-02-27 23:45 ` bugzilla-daemon
2020-03-05 12:22 ` [Bug 206695] New: " Michael Ellerman
` (8 subsequent siblings)
10 siblings, 0 replies; 13+ messages in thread
From: bugzilla-daemon @ 2020-02-27 23:45 UTC (permalink / raw)
To: linuxppc-dev
https://bugzilla.kernel.org/show_bug.cgi?id=206695
--- Comment #2 from Erhard F. (erhard_f@mailbox.org) ---
Created attachment 287691
--> https://bugzilla.kernel.org/attachment.cgi?id=287691&action=edit
kernel .config (kernel 5.6-rc3, PowerMac G5 11,2)
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* Re: [Bug 206695] New: kmemleak reports leaks in drivers/macintosh/windfarm
2020-02-27 23:44 [Bug 206695] New: kmemleak reports leaks in drivers/macintosh/windfarm bugzilla-daemon
2020-02-27 23:45 ` [Bug 206695] " bugzilla-daemon
2020-02-27 23:45 ` bugzilla-daemon
@ 2020-03-05 12:22 ` Michael Ellerman
2020-03-05 12:22 ` [Bug 206695] " bugzilla-daemon
` (7 subsequent siblings)
10 siblings, 0 replies; 13+ messages in thread
From: Michael Ellerman @ 2020-03-05 12:22 UTC (permalink / raw)
To: bugzilla-daemon, linuxppc-dev
Can you try this patch?
diff --git a/drivers/macintosh/windfarm_pm112.c b/drivers/macintosh/windfarm_pm112.c
index 4150301a89a5..a16f43a1def9 100644
--- a/drivers/macintosh/windfarm_pm112.c
+++ b/drivers/macintosh/windfarm_pm112.c
@@ -125,7 +125,7 @@ static int create_cpu_loop(int cpu)
{
int chip = cpu / 2;
int core = cpu & 1;
- struct smu_sdbp_header *hdr;
+ struct smu_sdbp_header *hdr, *hdr2;
struct smu_sdbp_cpupiddata *piddata;
struct wf_cpu_pid_param pid;
struct wf_control *main_fan = cpu_fans[0];
@@ -141,9 +141,9 @@ static int create_cpu_loop(int cpu)
piddata = (struct smu_sdbp_cpupiddata *)&hdr[1];
/* Get FVT params to get Tmax; if not found, assume default */
- hdr = smu_sat_get_sdb_partition(chip, 0xC4 + core, NULL);
- if (hdr) {
- struct smu_sdbp_fvt *fvt = (struct smu_sdbp_fvt *)&hdr[1];
+ hdr2 = smu_sat_get_sdb_partition(chip, 0xC4 + core, NULL);
+ if (hdr2) {
+ struct smu_sdbp_fvt *fvt = (struct smu_sdbp_fvt *)&hdr2[1];
tmax = fvt->maxtemp << 16;
} else
tmax = 95 << 16; /* default to 95 degrees C */
@@ -174,6 +174,10 @@ static int create_cpu_loop(int cpu)
pid.min = fmin;
wf_cpu_pid_init(&cpu_pid[cpu], &pid);
+
+ kfree(hdr);
+ kfree(hdr2);
+
return 0;
}
^ permalink raw reply related [flat|nested] 13+ messages in thread
* [Bug 206695] kmemleak reports leaks in drivers/macintosh/windfarm
2020-02-27 23:44 [Bug 206695] New: kmemleak reports leaks in drivers/macintosh/windfarm bugzilla-daemon
` (2 preceding siblings ...)
2020-03-05 12:22 ` [Bug 206695] New: " Michael Ellerman
@ 2020-03-05 12:22 ` bugzilla-daemon
2020-03-05 22:09 ` bugzilla-daemon
` (6 subsequent siblings)
10 siblings, 0 replies; 13+ messages in thread
From: bugzilla-daemon @ 2020-03-05 12:22 UTC (permalink / raw)
To: linuxppc-dev
https://bugzilla.kernel.org/show_bug.cgi?id=206695
--- Comment #3 from mpe@ellerman.id.au ---
Can you try this patch?
diff --git a/drivers/macintosh/windfarm_pm112.c
b/drivers/macintosh/windfarm_pm112.c
index 4150301a89a5..a16f43a1def9 100644
--- a/drivers/macintosh/windfarm_pm112.c
+++ b/drivers/macintosh/windfarm_pm112.c
@@ -125,7 +125,7 @@ static int create_cpu_loop(int cpu)
{
int chip = cpu / 2;
int core = cpu & 1;
- struct smu_sdbp_header *hdr;
+ struct smu_sdbp_header *hdr, *hdr2;
struct smu_sdbp_cpupiddata *piddata;
struct wf_cpu_pid_param pid;
struct wf_control *main_fan = cpu_fans[0];
@@ -141,9 +141,9 @@ static int create_cpu_loop(int cpu)
piddata = (struct smu_sdbp_cpupiddata *)&hdr[1];
/* Get FVT params to get Tmax; if not found, assume default */
- hdr = smu_sat_get_sdb_partition(chip, 0xC4 + core, NULL);
- if (hdr) {
- struct smu_sdbp_fvt *fvt = (struct smu_sdbp_fvt *)&hdr[1];
+ hdr2 = smu_sat_get_sdb_partition(chip, 0xC4 + core, NULL);
+ if (hdr2) {
+ struct smu_sdbp_fvt *fvt = (struct smu_sdbp_fvt *)&hdr2[1];
tmax = fvt->maxtemp << 16;
} else
tmax = 95 << 16; /* default to 95 degrees C */
@@ -174,6 +174,10 @@ static int create_cpu_loop(int cpu)
pid.min = fmin;
wf_cpu_pid_init(&cpu_pid[cpu], &pid);
+
+ kfree(hdr);
+ kfree(hdr2);
+
return 0;
}
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* [Bug 206695] kmemleak reports leaks in drivers/macintosh/windfarm
2020-02-27 23:44 [Bug 206695] New: kmemleak reports leaks in drivers/macintosh/windfarm bugzilla-daemon
` (3 preceding siblings ...)
2020-03-05 12:22 ` [Bug 206695] " bugzilla-daemon
@ 2020-03-05 22:09 ` bugzilla-daemon
2020-03-06 0:01 ` Michael Ellerman
2020-03-06 0:01 ` bugzilla-daemon
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10 siblings, 1 reply; 13+ messages in thread
From: bugzilla-daemon @ 2020-03-05 22:09 UTC (permalink / raw)
To: linuxppc-dev
https://bugzilla.kernel.org/show_bug.cgi?id=206695
--- Comment #4 from Erhard F. (erhard_f@mailbox.org) ---
(In reply to mpe from comment #3)
> Can you try this patch?
Applied your patch on top of 5.6-rc4 +
https://patchwork.ozlabs.org/patch/1248350/ and let the G5 do a few hours
compiling.
Only getting those nice memleaks from bug #206203 but no windfarm_pm112 memleak
any longer. So your patch works well it seems. Thanks!
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* Re: [Bug 206695] kmemleak reports leaks in drivers/macintosh/windfarm
2020-03-05 22:09 ` bugzilla-daemon
@ 2020-03-06 0:01 ` Michael Ellerman
0 siblings, 0 replies; 13+ messages in thread
From: Michael Ellerman @ 2020-03-06 0:01 UTC (permalink / raw)
To: bugzilla-daemon, linuxppc-dev
bugzilla-daemon@bugzilla.kernel.org writes:
> https://bugzilla.kernel.org/show_bug.cgi?id=206695
>
> --- Comment #4 from Erhard F. (erhard_f@mailbox.org) ---
> (In reply to mpe from comment #3)
>> Can you try this patch?
>
> Applied your patch on top of 5.6-rc4 +
> https://patchwork.ozlabs.org/patch/1248350/ and let the G5 do a few hours
> compiling.
>
> Only getting those nice memleaks from bug #206203 but no windfarm_pm112 memleak
> any longer. So your patch works well it seems. Thanks!
Thanks.
Can you try this one instead, it changes the order of operations to make
the code flow a bit nicer.
cheers
diff --git a/drivers/macintosh/windfarm_pm112.c b/drivers/macintosh/windfarm_pm112.c
index 4150301a89a5..e8377ce0a95a 100644
--- a/drivers/macintosh/windfarm_pm112.c
+++ b/drivers/macintosh/windfarm_pm112.c
@@ -132,14 +132,6 @@ static int create_cpu_loop(int cpu)
s32 tmax;
int fmin;
- /* Get PID params from the appropriate SAT */
- hdr = smu_sat_get_sdb_partition(chip, 0xC8 + core, NULL);
- if (hdr == NULL) {
- printk(KERN_WARNING"windfarm: can't get CPU PID fan config\n");
- return -EINVAL;
- }
- piddata = (struct smu_sdbp_cpupiddata *)&hdr[1];
-
/* Get FVT params to get Tmax; if not found, assume default */
hdr = smu_sat_get_sdb_partition(chip, 0xC4 + core, NULL);
if (hdr) {
@@ -152,6 +144,16 @@ static int create_cpu_loop(int cpu)
if (tmax < cpu_all_tmax)
cpu_all_tmax = tmax;
+ kfree(hdr);
+
+ /* Get PID params from the appropriate SAT */
+ hdr = smu_sat_get_sdb_partition(chip, 0xC8 + core, NULL);
+ if (hdr == NULL) {
+ printk(KERN_WARNING"windfarm: can't get CPU PID fan config\n");
+ return -EINVAL;
+ }
+ piddata = (struct smu_sdbp_cpupiddata *)&hdr[1];
+
/*
* Darwin has a minimum fan speed of 1000 rpm for the 4-way and
* 515 for the 2-way. That appears to be overkill, so for now,
@@ -174,6 +176,9 @@ static int create_cpu_loop(int cpu)
pid.min = fmin;
wf_cpu_pid_init(&cpu_pid[cpu], &pid);
+
+ kfree(hdr);
+
return 0;
}
^ permalink raw reply related [flat|nested] 13+ messages in thread
* [Bug 206695] kmemleak reports leaks in drivers/macintosh/windfarm
2020-02-27 23:44 [Bug 206695] New: kmemleak reports leaks in drivers/macintosh/windfarm bugzilla-daemon
` (4 preceding siblings ...)
2020-03-05 22:09 ` bugzilla-daemon
@ 2020-03-06 0:01 ` bugzilla-daemon
2020-03-06 9:54 ` bugzilla-daemon
` (4 subsequent siblings)
10 siblings, 0 replies; 13+ messages in thread
From: bugzilla-daemon @ 2020-03-06 0:01 UTC (permalink / raw)
To: linuxppc-dev
https://bugzilla.kernel.org/show_bug.cgi?id=206695
--- Comment #5 from mpe@ellerman.id.au ---
bugzilla-daemon@bugzilla.kernel.org writes:
> https://bugzilla.kernel.org/show_bug.cgi?id=206695
>
> --- Comment #4 from Erhard F. (erhard_f@mailbox.org) ---
> (In reply to mpe from comment #3)
>> Can you try this patch?
>
> Applied your patch on top of 5.6-rc4 +
> https://patchwork.ozlabs.org/patch/1248350/ and let the G5 do a few hours
> compiling.
>
> Only getting those nice memleaks from bug #206203 but no windfarm_pm112
> memleak
> any longer. So your patch works well it seems. Thanks!
Thanks.
Can you try this one instead, it changes the order of operations to make
the code flow a bit nicer.
cheers
diff --git a/drivers/macintosh/windfarm_pm112.c
b/drivers/macintosh/windfarm_pm112.c
index 4150301a89a5..e8377ce0a95a 100644
--- a/drivers/macintosh/windfarm_pm112.c
+++ b/drivers/macintosh/windfarm_pm112.c
@@ -132,14 +132,6 @@ static int create_cpu_loop(int cpu)
s32 tmax;
int fmin;
- /* Get PID params from the appropriate SAT */
- hdr = smu_sat_get_sdb_partition(chip, 0xC8 + core, NULL);
- if (hdr == NULL) {
- printk(KERN_WARNING"windfarm: can't get CPU PID fan config\n");
- return -EINVAL;
- }
- piddata = (struct smu_sdbp_cpupiddata *)&hdr[1];
-
/* Get FVT params to get Tmax; if not found, assume default */
hdr = smu_sat_get_sdb_partition(chip, 0xC4 + core, NULL);
if (hdr) {
@@ -152,6 +144,16 @@ static int create_cpu_loop(int cpu)
if (tmax < cpu_all_tmax)
cpu_all_tmax = tmax;
+ kfree(hdr);
+
+ /* Get PID params from the appropriate SAT */
+ hdr = smu_sat_get_sdb_partition(chip, 0xC8 + core, NULL);
+ if (hdr == NULL) {
+ printk(KERN_WARNING"windfarm: can't get CPU PID fan config\n");
+ return -EINVAL;
+ }
+ piddata = (struct smu_sdbp_cpupiddata *)&hdr[1];
+
/*
* Darwin has a minimum fan speed of 1000 rpm for the 4-way and
* 515 for the 2-way. That appears to be overkill, so for now,
@@ -174,6 +176,9 @@ static int create_cpu_loop(int cpu)
pid.min = fmin;
wf_cpu_pid_init(&cpu_pid[cpu], &pid);
+
+ kfree(hdr);
+
return 0;
}
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* [Bug 206695] kmemleak reports leaks in drivers/macintosh/windfarm
2020-02-27 23:44 [Bug 206695] New: kmemleak reports leaks in drivers/macintosh/windfarm bugzilla-daemon
` (5 preceding siblings ...)
2020-03-06 0:01 ` bugzilla-daemon
@ 2020-03-06 9:54 ` bugzilla-daemon
2020-04-23 6:53 ` bugzilla-daemon
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10 siblings, 0 replies; 13+ messages in thread
From: bugzilla-daemon @ 2020-03-06 9:54 UTC (permalink / raw)
To: linuxppc-dev
https://bugzilla.kernel.org/show_bug.cgi?id=206695
--- Comment #6 from Erhard F. (erhard_f@mailbox.org) ---
(In reply to mpe from comment #5)
> Can you try this one instead, it changes the order of operations to make
> the code flow a bit nicer.
2nd patch works equally well.
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* [Bug 206695] kmemleak reports leaks in drivers/macintosh/windfarm
2020-02-27 23:44 [Bug 206695] New: kmemleak reports leaks in drivers/macintosh/windfarm bugzilla-daemon
` (6 preceding siblings ...)
2020-03-06 9:54 ` bugzilla-daemon
@ 2020-04-23 6:53 ` bugzilla-daemon
2020-04-23 6:54 ` bugzilla-daemon
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From: bugzilla-daemon @ 2020-04-23 6:53 UTC (permalink / raw)
To: linuxppc-dev
https://bugzilla.kernel.org/show_bug.cgi?id=206695
Michael Ellerman (michael@ellerman.id.au) changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
CC| |michael@ellerman.id.au
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* [Bug 206695] kmemleak reports leaks in drivers/macintosh/windfarm
2020-02-27 23:44 [Bug 206695] New: kmemleak reports leaks in drivers/macintosh/windfarm bugzilla-daemon
` (7 preceding siblings ...)
2020-04-23 6:53 ` bugzilla-daemon
@ 2020-04-23 6:54 ` bugzilla-daemon
2020-04-24 0:30 ` bugzilla-daemon
2020-04-26 22:05 ` bugzilla-daemon
10 siblings, 0 replies; 13+ messages in thread
From: bugzilla-daemon @ 2020-04-23 6:54 UTC (permalink / raw)
To: linuxppc-dev
https://bugzilla.kernel.org/show_bug.cgi?id=206695
Michael Ellerman (michael@ellerman.id.au) changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |CODE_FIX
--- Comment #7 from Michael Ellerman (michael@ellerman.id.au) ---
Patch posted:
https://patchwork.ozlabs.org/project/linuxppc-dev/patch/20200423060038.3308530-1-mpe@ellerman.id.au/
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* [Bug 206695] kmemleak reports leaks in drivers/macintosh/windfarm
2020-02-27 23:44 [Bug 206695] New: kmemleak reports leaks in drivers/macintosh/windfarm bugzilla-daemon
` (8 preceding siblings ...)
2020-04-23 6:54 ` bugzilla-daemon
@ 2020-04-24 0:30 ` bugzilla-daemon
2020-04-26 22:05 ` bugzilla-daemon
10 siblings, 0 replies; 13+ messages in thread
From: bugzilla-daemon @ 2020-04-24 0:30 UTC (permalink / raw)
To: linuxppc-dev
https://bugzilla.kernel.org/show_bug.cgi?id=206695
Dennis Clarke (dclarke@blastwave.org) changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dclarke@blastwave.org
--- Comment #8 from Dennis Clarke (dclarke@blastwave.org) ---
123456789+123456789+123456789+123456789+123456789+123456789+123456789+
I will apply the patch and try with Linux 5.7-rc2 and post any results
seen.
Also this does close off : https://bugzilla.kernel.org/show_bug.cgi?id=199471
I see Wolfram Sang has commented there. OKay ... good stuff.
Dennis Clarke
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* [Bug 206695] kmemleak reports leaks in drivers/macintosh/windfarm
2020-02-27 23:44 [Bug 206695] New: kmemleak reports leaks in drivers/macintosh/windfarm bugzilla-daemon
` (9 preceding siblings ...)
2020-04-24 0:30 ` bugzilla-daemon
@ 2020-04-26 22:05 ` bugzilla-daemon
10 siblings, 0 replies; 13+ messages in thread
From: bugzilla-daemon @ 2020-04-26 22:05 UTC (permalink / raw)
To: linuxppc-dev
https://bugzilla.kernel.org/show_bug.cgi?id=206695
--- Comment #9 from Dennis Clarke (dclarke@blastwave.org) ---
I see this has not gone upstream to 5.7-rc3 and thus I am applying
it manually and building now.
Shall report on the kmem leak shortly. I hope.
Dennis
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2020-03-06 9:54 ` bugzilla-daemon
2020-04-23 6:53 ` bugzilla-daemon
2020-04-23 6:54 ` bugzilla-daemon
2020-04-24 0:30 ` bugzilla-daemon
2020-04-26 22:05 ` bugzilla-daemon
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