I tried 29be7fc03d ("io_uring: ensure that threads freeze on suspend")
and it seems to work OK. The system suspends fine and no errors are
printed to the kernel log.
I am using Gentoo on the machine in question.
I didn't test the other patches you supplied. Let me know if there's
anything you
Hi,
On Linux 5.12-rc1, I am unable to suspend to RAM. The system freezes for
about 40 seconds and then continues operation. The following messages
are printed to the kernel log:
[ 240.650300] PM: suspend entry (deep)
[ 240.650748] Filesystems sync: 0.000 seconds
[ 240.725605] Freezing user s
Excerpts from Christoph Hellwig's message of February 16, 2021 3:47 am:
> How do these maxlen = 0 entries even survive the sysctl_check_table
> check?
maxlen!=0 is only checked for "default" handlers, e.g. proc_dostring,
proc_dointvec. it is not checked for non-default handlers, because some
of
Excerpts from Alex Xu (Hello71)'s message of February 15, 2021 9:53 am:
> This issue was discussed at [0] and following, and the solution was to
> clamp the size at KMALLOC_MAX_LEN. However, KMALLOC_MAX_LEN is a maximum
> allocation, and may be difficult to allocate in low mem
an upper limit.
[0]
https://lore.kernel.org/lkml/1fc7ce08-26a7-59ff-e580-4e6c22554...@oracle.com/
Fixes: 32927393dc1c ("sysctl: pass kernel pointers to ->proc_handler")
Signed-off-by: Alex Xu (Hello71)
---
drivers/parport/procfs.c | 20 ++--
fs/proc/
Excerpts from Alex Xu (Hello71)'s message of December 15, 2020 2:03 pm:
> bzip2 is either slower or larger than every other supported algorithm,
> according to benchmarks at [0]. It is far slower to decompress than any
> other algorithm, and still larger than lzma, xz, and zstd.
bzip2 is either slower or larger than every other supported algorithm,
according to benchmarks at [0]. It is far slower to decompress than any
other algorithm, and still larger than lzma, xz, and zstd.
[0] https://lore.kernel.org/lkml/1588791882.08g1378g67.none@localhost/
Signed-off-by: Alex Xu
root_device_name has gone through many iterations, but is now solely
used for removing a /dev/ prefix off root= parameter. It's time for it
to be removed.
Signed-off-by: Alex Xu (Hello71)
---
init/do_mounts.c | 8 ++--
1 file changed, 2 insertions(+), 6 deletions(-)
diff --git a
This should be handled by the fallback after trying to resolve it.
Signed-off-by: Alex Xu (Hello71)
---
init/do_mounts.c | 5 -
1 file changed, 5 deletions(-)
diff --git a/init/do_mounts.c b/init/do_mounts.c
index 8aa38ec0bfec..a2a273b9866f 100644
--- a/init/do_mounts.c
+++ b/init
9p/virtio, virtiofs, and others can be mounted with no block device or
userspace helpers.
Signed-off-by: Alex Xu (Hello71)
---
init/do_mounts.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/init/do_mounts.c b/init/do_mounts.c
index b5f9604d0c98..8aa38ec0bfec 100644
--- a
bzip2 is either slower or larger than every other supported algorithm,
according to benchmarks at [0]. It is far slower to decompress than any
other algorithm, and still larger than lzma, xz, and zstd.
[0] https://lore.kernel.org/lkml/1588791882.08g1378g67.none@localhost/
Signed-off-by: Alex Xu
Excerpts from Deucher, Alexander's message of October 26, 2020 10:34 am:
> It was using kvzalloc, but was accidently dropped when that code was
> refactored. I just sent a patch to fix it.
Ah, that explains why I wasn't seeing it before. I was only looking at
changes in amdgpu_dm_atomic_commit_
Hi,
I frequently encounter OOM on my system, mostly due to my own fault.
Recently, I noticed that not only does a swap storm happen and OOM
killer gets invoked, but the graphics output freezes permanently.
Checking the kernel messages, I see:
kworker/u24:4: page allocation failure: order:5,
m
Excerpts from Thadeu Lima de Souza Cascardo's message of August 7, 2020 1:36 pm:
> On Fri, Aug 07, 2020 at 08:48:46AM -0700, Linus Torvalds wrote:
>> On Fri, Aug 7, 2020 at 8:19 AM Alex Xu (Hello71) wrote:
>> >
>> > On Linus' master, wine fails to start wit
Hi,
On Linus' master, wine fails to start with the following error:
wine client error:0: write: Bad file descriptor
This issue is not present on 5.8. It appears to be caused by failure to
write to a pipe FD received via SCM_RIGHTS. Therefore, I tried reverting
9ecc6ea491f0, which resolved the
Excerpts from Gao Xiang's message of July 1, 2020 11:50 am:
> Anyway, I think LZMA (xz) is still useful and which is more
> friendly to fixed-sized output compression than Zstd yet (But
> yeah, I'm not familar with all ZSTD internals. I will dig
> into that if I've more extra time).
Yes, I agr
Hi all,
ZSTD compression patches have been sent in a number of times over the
past few years. Every time, someone asks for benchmarks. Every time,
someone is concerned about compression time. Sometimes, someone provides
benchmarks.
But, as far as I can tell, nobody considered the compression p
Excerpts from Joerg Roedel's message of June 22, 2020 6:02 am:
> Hi Alex,
>
> On Thu, Jun 11, 2020 at 07:05:21PM -0400, Alex Xu (Hello71) wrote:
>> I am using an ASRock B450 Pro4 with Ryzen 1600 and ASUS RX 480. I don't
>> understand this code at all, b
Excerpts from Takashi Iwai's message of June 14, 2020 5:54 am:
> On Sat, 13 Jun 2020 18:25:22 +0200,
> Alex Xu (Hello71) wrote:
>>
>> Excerpts from Takashi Iwai's message of June 11, 2020 1:11 pm:
>> > Thanks, so something still missing in the mmap handling, I
Excerpts from Takashi Iwai's message of June 11, 2020 1:11 pm:
> Thanks, so something still missing in the mmap handling, I guess.
>
> I've worked on two different branches for potential fixes of your
> problems. Could you test topic/dma-fix and topic/dma-fix2 branches?
> git://git.kernel.org/p
Hi,
amdgpu + IOMMU + SME is now working for me on 5.7, yay! But, it is
broken on torvalds master, boo. On boot, depending on which exact commit
I test, it either hangs immediately (with built-in driver, before
starting initramfs), displays some errors then hangs, or spams the
screen with many
r before
or after with SEV (which I'm not even sure my system supports).
Regardless, this is a definite improvement.
Tested-by: Alex Xu (Hello71)
Thanks,
Alex.
Excerpts from Takashi Iwai's message of June 9, 2020 11:12 am:
> On Tue, 09 Jun 2020 13:47:33 +0200,
> Christoph Hellwig wrote:
>>
>> Alex, can you try this patch?
>
> Also could you check whether just papering over the memset() call
> alone avoids the crash like below? For PulseAudio and dmix/d
Excerpts from Christoph Hellwig's message of June 9, 2020 7:47 am:
> Alex, can you try this patch?
>
> diff --git a/sound/core/Kconfig b/sound/core/Kconfig
> index d4554f376160a9..10b06e575a7fc5 100644
> --- a/sound/core/Kconfig
> +++ b/sound/core/Kconfig
> @@ -192,6 +192,6 @@ config SND_VMASTER
>
Excerpts from Christoph Hellwig's message of June 8, 2020 2:19 am:
> Can you do a listing using gdb where this happens?
>
> gdb vmlinux
>
> l *(snd_pcm_hw_params+0x3f3)
>
> ?
>
(gdb) l *(snd_pcm_hw_params+0x3f3)
0x817efc85 is in snd_pcm_hw_params
(.../linux/sound/core/pcm_native.c:749
Excerpts from David Rientjes's message of June 7, 2020 8:57 pm:
> Thanks for trying it out, Alex. Would you mind sending your .config and
> command line? I assume either mem_encrypt=on or
> CONFIG_AMD_MEM_ENCRYPT_ACTIVE_BY_DEFAULT is enabled.
>
> Could you also give this a try?
>
> diff --git
Excerpts from David Rientjes's message of June 7, 2020 3:41 pm:
> On Sun, 7 Jun 2020, Pavel Machek wrote:
>
>> > I have a similar issue, caused between aaa2faab4ed8 and b170290c2836.
>> >
>> > [ 20.263098] BUG: unable to handle page fault for address:
>> > b2b582cc2000
>> > [ 20.263104]
I have a similar issue, caused between aaa2faab4ed8 and b170290c2836.
[ 20.263098] BUG: unable to handle page fault for address: b2b582cc2000
[ 20.263104] #PF: supervisor write access in kernel mode
[ 20.263105] #PF: error_code(0x000b) - reserved bit violation
[ 20.263107] PGD 3fd03b06
many/most distributions do not configure rngd by default
in combination, many programs (e.g. sshd, gdm) now block on startup,
sometimes for many minutes. in the kernel, we can't fix this easily, but
we should at least notify users why their program is stuck.
Signed-off-by: Alex Xu (He
Fix "warning: regexp escape sequence is not a known regexp operator" on
gawk 5.0.0.
Results found by:
- grepping '\\[^\[\\^$.|?*+()a-z]' on *.awk
- grepping 'awk.*\\[^\[\\^$.|?*+()a-z]'
- running awk --lint -f /dev/null on *.awk
Signed-off-by: Alex Xu (Hello71)
Excerpts from Mikhail Gavrilov's message of May 18, 2019 7:07 am:
> On Sat, 18 May 2019 at 11:44, Mikhail Gavrilov
> wrote:
>> [28616.429757] EXT4-fs error (device nvme0n1p2): ext4_find_extent:908:
>> inode #8: comm jbd2/nvme0n1p2-: pblk 23101439 bad header/extent:
>> invalid extent entries - magi
Hi,
I was trying to use strace recently and found that it exhibited some
strange behavior. I produced this minimal test case:
#include
int main() {
write(1, "a", 1);
return 0;
}
which, when run using "gcc test.c && strace ./a.out" produces this
strace output:
[ pre-main omitted ]
wr
Fix "warning: regexp escape sequence is not a known regexp operator" on
gawk 5.0.0.
Results found by:
- grepping '\\[^\[\\^$.|?*+()a-z]' on *.awk
- grepping 'awk.*\\[^\[\\^$.|?*+()a-z]'
- running awk --lint -f /dev/null on *.awk
Signed-off-by: Alex Xu (Hello71)
Excerpts from Vineeth Pillai's message of March 25, 2019 6:08 pm:
> On Sun, Mar 24, 2019 at 11:30 AM Alex Xu (Hello71) wrote:
>>
>> I get this BUG in 5.1-rc1 sometimes when powering off the machine. I
>> suspect my setup erroneously executes two swapoff+cryp
I get this BUG in 5.1-rc1 sometimes when powering off the machine. I
suspect my setup erroneously executes two swapoff+cryptsetup close
operations simultaneously, so a race condition is triggered.
I am using a single swap on a plain dm-crypt device on a MBR partition
on a SATA drive.
I think t
After suspending, my r8169 (not actually 8169, just that driver) only
receives packets when in promiscuous mode. I have tried disabling all
offload features except highdma [fixed], and it doesn't fix the issue.
I am using torvalds/linux, compiled about two days ago (not sure which
commit). I th
This affects at least versions 25 and 33, so assume all cards are broken
and just renegotiate by default.
Fixes: a2965f12fde6 ("r8169: remove rtl8169_set_speed_xmii")
Signed-off-by: Alex Xu (Hello71)
---
drivers/net/ethernet/realtek/r8169.c | 7 +++
1 file changed, 3 insert
Spinlocks are always lockable on UP systems, even if they were just
locked.
Cc: Dan Streetman
Signed-off-by: Alex Xu (Hello71)
---
mm/z3fold.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/mm/z3fold.c b/mm/z3fold.c
index 4b366d181..2e8d268ac 100644
--- a/mm/z3fold.c
Spinlocks are always lockable on UP systems, even if they were just
locked.
Cc: Dan Streetman
Signed-off-by: Alex Xu (Hello71)
---
mm/z3fold.c | 13 ++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/mm/z3fold.c b/mm/z3fold.c
index 4b366d181..4e6ad2de4 100644
--- a/mm
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