Re: 答复: 答复: INFO: [BISECTED] Regression: A Problem with /sys/kernel/debug/kmemleak output: backtrace not printed since 6.2.0-rc1

Mirsad Goran Todorovac
2023-01-13T13:47:54Z

On 13.1.2023. 11:14, 黄朝阳 (Zhaoyang Huang) wrote:
>> On 13.1.2023. 7:20, 黄朝阳 (Zhaoyang Huang) wrote:
>>>> /sys/kernel/debug/kmemleak output: backtrace not printed since
>>>> 6.2.0-rc1
>>>>
>>>>
>>>>> On 12. 01. 2023. 20:50, Mirsad Todorovac wrote:
>>>>>> Hi all,
>>>>>>
>>>>>> there seems to be a problem with the output of
>>>>> /sys/kernel/debug/kmemleak:
>>>>>>
>>>>>> [root@pc-mtodorov ~]# cat /sys/kernel/debug/kmemleak unreferenced
>>>>>> object 0xffff951c118568b0 (size 16):
>>>>>> comm "kworker/u12:2", pid 56, jiffies 4294893952 (age 4356.548s)
>>>>>> hex dump (first 16 bytes):
>>>>>> 6d 65 6d 73 74 69 63 6b 30 00 00 00 00 00 00 00 memstick0.......
>>>>>> backtrace:
>>>>>> [root@pc-mtodorov ~]#
>>>>>>
>>>>>> Apparently, backtrace of called functions on the stack is no longer
>>>>>> printed
>>>>> with the list of memory leaks.
>>>>>>
>>>>>> This appeared on Lenovo desktop 10TX000VCR, with AlmaLinux 8.7 and
>>>>>> BIOS version M22KT49A (11/10/2022) and 6.2-rc1 and 6.2-rc2 builds.
>>>>>>
>>>>>> This worked on 6.1 with the same CONFIG_KMEMLEAK=y and MGLRU
>>>>> enabled
>>>>>> on a vanilla mainstream kernel from Mr. Torvalds' tree. I don't
>>>>>> know if this is
>>>>> deliberate feature for some reason or a bug.
>>>>>>
>>>>>> Please find attached the config, lshw and kmemleak output.
>>>>>>
>>>>>> The bisection gave this commit as the culprit for the severed stack
>>>>>> backtrace print in /sys/kernel/debug/kmemleak:
>>>>>>
>>>>>> mtodorov@domac:~/linux/kernel/linux_torvalds$ git bisect good
>>>>>> 56a61617dd2276cbc56a6c868599716386d70041 is the first bad commit
>>>>>> commit 56a61617dd2276cbc56a6c868599716386d70041
>>>>>> Author: Zhaoyang Huang <zhaoyang.huang@unisoc.com>
>>>>>> Date: Thu Oct 27 17:50:24 2022 +0800
>>>>>>
>>>>>> mm: use stack_depot for recording kmemleak's backtrace
>>>>>>
>>>>>> Using stack_depot to record kmemleak's backtrace which has
>> been
>>>>>> implemented on slub for reducing redundant information.
>>>>>>
>>>>>> The complete bisect log is:
>>>>>>
>>>>>> mtodorov@domac:~/linux/kernel/linux_torvalds$ git bisect log git
>>>>>> bisect start '--' 'mm'
>>>>>> # good: [830b3c68c1fb1e9176028d02ef86f3cf76aa2476] Linux 6.1 git
>>>>>> bisect good 830b3c68c1fb1e9176028d02ef86f3cf76aa2476
>>>>>> # bad: [1b929c02afd37871d5afb9d498426f83432e71c2] Linux 6.2-rc1 git
>>>>>> bisect bad 1b929c02afd37871d5afb9d498426f83432e71c2
>>>>>> # good: [8b9ed79c2d587bec5f603d66801478a5af9af842] Merge tag
>>>>>> 'x86_asm_for_v6.2' of
>>>>>> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
>>>>>> git bisect good 8b9ed79c2d587bec5f603d66801478a5af9af842
>>>>>> # good: [e83b39d6bbdb6d25bd6f5c258832774635d29b47] mm: make
>>>>>> drop_caches keep reclaiming on all nodes git bisect good
>>>>>> e83b39d6bbdb6d25bd6f5c258832774635d29b47
>>>>>> # good: [9997bc017549acd6425e32300eff28424ffeeb6b] zsmalloc:
>>>>> implement
>>>>>> writeback mechanism for zsmalloc git bisect good
>>>>>> 9997bc017549acd6425e32300eff28424ffeeb6b
>>>>>> # good: [6287b7dae80944bfa37784a8f9d6861a4facaa6e] mm,thp,rmap:
>> fix
>>>>>> races between updates of subpages_mapcount git bisect good
>>>>>> 6287b7dae80944bfa37784a8f9d6861a4facaa6e
>>>>>> # good: [8fa590bf344816c925810331eea8387627bbeb40] Merge tag
>>>>>> 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
>>>>>> git bisect good 8fa590bf344816c925810331eea8387627bbeb40
>>>>>> # good: [4f292c4de4f6fb83776c0ff22674121eb6ddfa2f] Merge tag
>>>>>> 'x86_mm_for_6.2_v2' of
>>>>>> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
>>>>>> git bisect good 4f292c4de4f6fb83776c0ff22674121eb6ddfa2f
>>>>>> # bad: [1ea9d333ba475041efe43d9d9bc32e64aea2ea2b] Merge tag
>>>>>> 'mm-stable-2022-12-17-2' of
>>>>>> git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
>>>>>> git bisect bad 1ea9d333ba475041efe43d9d9bc32e64aea2ea2b
>>>>>> # bad: [56a61617dd2276cbc56a6c868599716386d70041] mm: use
>>>>> stack_depot
>>>>>> for recording kmemleak's backtrace git bisect bad
>>>>>> 56a61617dd2276cbc56a6c868599716386d70041
>>>>>> # good: [61b963b52f59524e27692bc1c14bfb2459e32eb3] mm/gup_test:
>>>>> free
>>>>>> memory allocated via kvcalloc() using kvfree() git bisect good
>>>>>> 61b963b52f59524e27692bc1c14bfb2459e32eb3
>>>>>> # first bad commit: [56a61617dd2276cbc56a6c868599716386d70041]
>> mm:
>>>>> use
>>>>>> stack_depot for recording kmemleak's backtrace # good:
>>>>>> [9102b78b6f6ae6af3557114c265c266b312c1319] maple_tree: update
>>>>>> copyright dates for test code git bisect good
>>>>>> 9102b78b6f6ae6af3557114c265c266b312c1319
>>>>>> # first bad commit: [56a61617dd2276cbc56a6c868599716386d70041]
>> mm:
>>>>> use
>>>>>> stack_depot for recording kmemleak's backtrace You have mail in
>>>>>> /var/mail/mtodorov mtodorov@domac:~/linux/kernel/linux_torvalds$
>>>>>>
>>>>>> The platform is 10TX000VCR
>>>>> (LENOVO_MT_10TX_BU_Lenovo_FM_V530S-07ICB)
>>>>>> running AlmaLinux 8.7 (CentOS clone) and BIOS M22KT49A.
>>>>>>
>>>>>> GCC used was:
>>>>>>
>>>>>> mtodorov@domac:~/linux/kernel/linux_torvalds$ gcc --version gcc
>>>>>> (Debian 8.3.0-6) 8.3.0 Copyright (C) 2018 Free Software Foundation,
>>>>>> Inc.
>>>>>> This is free software; see the source for copying conditions.
>>>>>> There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
>>>>> PARTICULAR PURPOSE.
>>>>>> mtodorov@domac:~/linux/kernel/linux_torvalds$
>>>>>>
>>>>>> Hope this helps.
>>>>>>
>>>>>> I lack the insight to pinpoint the exact fault in the patch.
>>>>>
>>>>> P.S.
>>>>>
>>>>> To further complicate things, on Ubuntu 22.10 Lenovo Ideapad 3
>>>>> 15ITL6 laptop the kmemleak stack backtrace is printed correctly with
>>>>> the same kernels (but .deb instead of .rpm for the same build):
>>>>>
>>>>> unreferenced object 0xffff94ca88e042d0 (size 80):
>>>>> comm "thermald", pid 768, jiffies 4294893592 (age 78581.504s)
>>>>> hex dump (first 32 bytes):
>>>>> 00 00 00 00 00 00 00 00 0d 01 2d 00 00 00 00 00 ..........-.....
>>>>> af 07 01 80 fd ac ff ff 00 00 00 00 00 00 00 00 ................
>>>>> backtrace:
>>>>> [<ffffffffa0dcb921>] slab_post_alloc_hook+0x91/0x320
>>>>> [<ffffffffa0dcfb79>] kmem_cache_alloc+0x169/0x2f0
>>>>> [<ffffffffa12b1def>] acpi_os_acquire_object+0x2c/0x32
>>>>> [<ffffffffa12b1ea2>] acpi_ps_alloc_op+0x4a/0x99
>>>>> [<ffffffffa12af5c8>] acpi_ps_get_next_arg+0x611/0x761
>>>>> [<ffffffffa12afbbc>] acpi_ps_parse_loop+0x494/0x8d7
>>>>> [<ffffffffa12b1434>] acpi_ps_parse_aml+0x1bb/0x561
>>>>> [<ffffffffa12b24c8>] acpi_ps_execute_method+0x20f/0x2d5
>>>>> [<ffffffffa12a7acf>] acpi_ns_evaluate+0x34d/0x4f3
>>>>> [<ffffffffa12ad6a3>] acpi_evaluate_object+0x180/0x3ae
>>>>> [<ffffffffa1269ca8>] acpi_run_osc+0x128/0x250
>>>>> [<ffffffffc0bbb14f>] int3400_thermal_run_osc+0x6f/0xc0
>>>>> [int3400_thermal]
>>>>> [<ffffffffc0bbb293>] current_uuid_store+0xe3/0x120
>> [int3400_thermal]
>>>>> [<ffffffffa13b8ed4>] dev_attr_store+0x14/0x30
>>>>> [<ffffffffa0ee0458>] sysfs_kf_write+0x38/0x50
>>>>> [<ffffffffa0edf516>] kernfs_fop_write_iter+0x146/0x1d0 You have
>>>>> new mail in /var/mail/root
>>>>> root@marvin-IdeaPad-3-15ITL6:/home/marvin#
>>>>>
>>>>> Regards,
>>>>> Mirsad
>>>>
>>>> thanks for head up. Could you please help to check If
>>>> CONFIG_STACKTRACE and CONFIG_STACKDEPOT is enabled on the fault
>> kernel?
>>> Please try the patch below if the configs are right. I think it should
>>> be caused by the late ready for kmemleak
>>>
>>> commit 556eb1927da99ab366e370d593fc32da946768c3
>>> Author: Zhaoyang Huang <zhaoyang.huang@unisoc.com>
>>> Date: Fri Jan 13 14:13:39 2023 +0800
>>>
>>> mm: instroduce a flag to indicate stack_depot's ready
>>>
>>> try to solve the kmemleak's late ready issue.
>>>
>>> diff --git a/mm/kmemleak.c b/mm/kmemleak.c index 762b91f..7eb24bc
>>> 100644
>>> --- a/mm/kmemleak.c
>>> +++ b/mm/kmemleak.c
>>> @@ -216,6 +216,7 @@ struct kmemleak_object { static int
>> kmemleak_warning;
>>> /* set if a fatal kmemleak error has occurred */ static int
>>> kmemleak_error;
>>> +static int kmemleak_stadep_initialized;
>>>
>>> /* minimum and maximum address that may be valid pointers */ static
>> unsigned long min_addr = ULONG_MAX; @@ -601,7 +602,7 @@ static noinline
>> depot_stack_handle_t set_track_prepare(void)
>>> unsigned long entries[MAX_TRACE];
>>> unsigned int nr_entries;
>>>
>>> - if (!kmemleak_initialized)
>>> + if (!kmemleak_stadep_initialized)
>>> return 0;
>>> nr_entries = stack_trace_save(entries, ARRAY_SIZE(entries), 3);
>>> trace_handle = stack_depot_save(entries, nr_entries,
>> GFP_NOWAIT); @@ -2110,6 +2111,7 @@ void __init kmemleak_init(void)
>>> create_object((unsigned long)__start_ro_after_init,
>>> __end_ro_after_init -
>> __start_ro_after_init,
>>> KMEMLEAK_GREY, GFP_ATOMIC);
>>> + kmemleak_stadep_initialized = 1;
>>> }
>>
>> Hi, Zhaoyang,
>>
>> Sorry, applied the patch and rebuilt, but it didn't work for me:
>>
>> [root@pc-mtodorov marvin]# uname -rms
>> Linux 6.2.0-rc3-mglru-kmemlk-patch-zhaoyang1+ x86_64 [root@pc-mtodorov
>> marvin]# cat /sys/kernel/debug/kmemleak [root@pc-mtodorov marvin]# echo
>> scan | tee !$ echo scan | tee /sys/kernel/debug/kmemleak scan
>> [root@pc-mtodorov marvin]# cat /sys/kernel/debug/kmemleak unreferenced
>> object 0xffff98938fed1ee0 (size 16):
>> comm "kworker/u12:2", pid 57, jiffies 4294894053 (age 66.616s)
>> hex dump (first 16 bytes):
>> 6d 65 6d 73 74 69 63 6b 30 00 00 00 00 00 00 00 memstick0.......
>> backtrace:
>> [root@pc-mtodorov marvin]#
>>
>> Still the stack backtrace list is severed.
>> CONFIG_STACKDEPOT and CONFIG_STACKTRACE are both "=y":
>>
>> [root@pc-mtodorov marvin]# grep -E 'CONFIG_(STACKTRACE|STACKDEPOT)'
>> /boot/config-6.2.0-rc3-mglru-kmemlk-patch-zhaoyang1+
>> CONFIG_STACKTRACE_SUPPORT=y
>> CONFIG_STACKDEPOT=y
>> # CONFIG_STACKTRACE_BUILD_ID is not set
>> CONFIG_STACKTRACE=y
>> [root@pc-mtodorov marvin]#
>>
>> Your patch was successfully applied (after some tweaks):
>>
>> mtodorov@domac:~/linux/kernel/linux_torvalds$ git diff mm diff --git
>> a/mm/kmemleak.c b/mm/kmemleak.c index 92f670edbf51..78fd3b89b057
>> 100644
>> --- a/mm/kmemleak.c
>> +++ b/mm/kmemleak.c
>> @@ -216,6 +216,7 @@ static int kmemleak_initialized;
>> static int kmemleak_warning;
>> /* set if a fatal kmemleak error has occurred */
>> static int kmemleak_error;
>> +static int kmemleak_stadep_initialized;
>>
>> /* minimum and maximum address that may be valid pointers */
>> static unsigned long min_addr = ULONG_MAX; @@ -601,7 +602,7 @@ static
>> noinline depot_stack_handle_t set_track_prepare(void)
>> unsigned long entries[MAX_TRACE];
>> unsigned int nr_entries;
>>
>> - if (!kmemleak_initialized)
>> + if (!kmemleak_stadep_initialized)
>> return 0;
>> nr_entries = stack_trace_save(entries, ARRAY_SIZE(entries), 3);
>> trace_handle = stack_depot_save(entries, nr_entries,
>> GFP_NOWAIT); @@ -2110,6 +2111,7 @@ void __init kmemleak_init(void)
>> create_object((unsigned long)__start_ro_after_init,
>> __end_ro_after_init -
>> __start_ro_after_init,
>> KMEMLEAK_GREY, GFP_ATOMIC);
>> + kmemleak_stadep_initialized = 1;
>> }
>>
>> /*
>> mtodorov@domac:~/linux/kernel/linux_torvalds$
>>
>> Please verify that the above is correct.
> It is correct. Another reason could be the stack is less than 3 layers which could be surpassed by stack_trace_save. Could you please try to modify the code as bellow and try again.
> static noinline depot_stack_handle_t set_track_prepare(void)
> {
> depot_stack_handle_t trace_handle;
> unsigned long entries[MAX_TRACE];
> unsigned int nr_entries;
>
> if (!kmemleak_initialized)
> return 0;
> - nr_entries = stack_trace_save(entries, ARRAY_SIZE(entries), 3);
> + nr_entries = stack_trace_save(entries, ARRAY_SIZE(entries), 0);
> trace_handle = stack_depot_save(entries, nr_entries, GFP_NOWAIT);
>
> return trace_handle;
> }

Tried that, rebuilt, still no luck:

[root@pc-mtodorov marvin]# uname -rms
Linux 6.2.0-rc3-mglru-kmemlk-patch-zhaoyang2+ x86_64
[root@pc-mtodorov marvin]# cat /sys/kernel/debug/kmemleak
unreferenced object 0xffff8e8c86483c00 (size 16):
comm "kworker/u12:5", pid 364, jiffies 4294894029 (age 135.024s)
hex dump (first 16 bytes):
6d 65 6d 73 74 69 63 6b 30 00 00 00 00 00 00 00 memstick0.......
backtrace:
unreferenced object 0xffff8e8c8edb3f70 (size 16):
comm "kworker/u12:5", pid 364, jiffies 4294894033 (age 135.008s)
hex dump (first 16 bytes):
6d 65 6d 73 74 69 63 6b 30 00 00 00 00 00 00 00 memstick0.......
backtrace:
[root@pc-mtodorov marvin]#

What I have here is:

static noinline depot_stack_handle_t set_track_prepare(void)
{
depot_stack_handle_t trace_handle;
unsigned long entries[MAX_TRACE];
unsigned int nr_entries;

if (!kmemleak_stadep_initialized)
return 0;
nr_entries = stack_trace_save(entries, ARRAY_SIZE(entries), 0);
trace_handle = stack_depot_save(entries, nr_entries, GFP_NOWAIT);

return trace_handle;
}

Maybe this will help (dmesg says that Stack Depot is disabled due to errors?):

[ 0.072031] Memory: 16152080K/16658536K available (18432K kernel code, 4118K rwdata, 7184K rodata, 4420K init, 7684K bss, 506196K
reserved, 0K cma-reserved)
[ 0.072219] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=6, Nodes=1
[ 0.072222] Stack Depot allocating hash table of 1048576 entries with kvcalloc
[ 0.072226] swapper: vmalloc error: size 8388608, vm_struct allocation failed, mode:0xdc0(GFP_KERNEL|__GFP_ZERO),
nodemask=(null),cpuset=(null),mems_allowed=0-1023
[ 0.072235] CPU: 0 PID: 0 Comm: swapper Not tainted 6.2.0-rc3-mglru-kmemlk-patch-zhaoyang2+ #23
[ 0.072237] Hardware name: LENOVO 10TX000VCR/3140, BIOS M22KT49A 11/10/2022
[ 0.072238] Call Trace:
[ 0.072240] <TASK>
[ 0.072242] dump_stack_lvl+0x49/0x63
[ 0.072248] dump_stack+0x10/0x16
[ 0.072250] warn_alloc.cold.161+0x75/0xe8
[ 0.072255] ? __get_vm_area_node+0x14d/0x160
[ 0.072260] __vmalloc_node_range+0x5e5/0x7d0
[ 0.072264] ? stack_depot_init.cold.2+0x7e/0xb3
[ 0.072267] ? __kmalloc_large_node+0xf8/0x150
[ 0.072270] ? kvmalloc_node+0x4f/0xe0
[ 0.072274] kvmalloc_node+0xb1/0xe0
[ 0.072276] ? stack_depot_init.cold.2+0x7e/0xb3
[ 0.072278] stack_depot_init.cold.2+0x7e/0xb3
[ 0.072280] kmemleak_init+0x1b/0x114
[ 0.072284] start_kernel+0x710/0x9dc
[ 0.072288] x86_64_start_reservations+0x24/0x2a
[ 0.072290] x86_64_start_kernel+0xf2/0xfd
[ 0.072292] secondary_startup_64_no_verify+0xe5/0xeb
[ 0.072297] </TASK>
[ 0.072298] Mem-Info:
[ 0.072299] active_anon:0 inactive_anon:0 isolated_anon:0
active_file:0 inactive_file:0 isolated_file:0
unevictable:0 dirty:0 writeback:0
slab_reclaimable:0 slab_unreclaimable:26
mapped:0 shmem:0 pagetables:0
sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0
free:4037994 free_pcp:0 free_cma:0
[ 0.072303] Node 0 active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB
isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB
kernel_stack:0kB pagetables:0kB sec_pagetables:0kB all_unreclaimable? no
[ 0.072307] Node 0 DMA free:14336kB boost:0kB min:0kB low:0kB high:0kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB
active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:14336kB mlocked:0kB bounce:0kB
free_pcp:0kB local_pcp:0kB free_cma:0kB
[ 0.072311] lowmem_reserve[]: 0 0 0 0 0
[ 0.072314] Node 0 DMA32 free:2085160kB boost:0kB min:0kB low:0kB high:0kB reserved_highatomic:0KB active_anon:0kB
inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:2257392kB managed:2085160kB mlocked:0kB
bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
[ 0.072318] lowmem_reserve[]: 0 0 0 0 0
[ 0.072321] Node 0 Normal free:14052480kB boost:0kB min:0kB low:0kB high:0kB reserved_highatomic:0KB active_anon:0kB
inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:14385152kB managed:14052844kB
mlocked:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
[ 0.072325] lowmem_reserve[]: 0 0 0 0 0
[ 0.072328] Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 2*1024kB (UM) 2*2048kB (M) 2*4096kB (M) = 14336kB
[ 0.072338] Node 0 DMA32: 8*4kB (M) 9*8kB (M) 8*16kB (M) 8*32kB (M) 7*64kB (M) 7*128kB (M) 8*256kB (M) 7*512kB (M) 5*1024kB (M)
6*2048kB (M) 503*4096kB (M) = 2085160kB
[ 0.072352] Node 0 Normal: 8*4kB (UM) 8*8kB (M) 2*16kB (UM) 2*32kB (M) 1*64kB (M) 3*128kB (UM) 2*256kB (M) 4*512kB (UM) 2*1024kB
(UM) 3*2048kB (UM) 3428*4096kB (M) = 14052480kB
[ 0.072366] 0 total pagecache pages
[ 0.072367] 0 pages in swap cache
[ 0.072367] Free swap = 0kB
[ 0.072368] Total swap = 0kB
[ 0.072369] 4164634 pages RAM
[ 0.072369] 0 pages HighMem/MovableOnly
[ 0.072370] 126549 pages reserved
[ 0.072371] 0 pages hwpoisoned
[ 0.072372] Stack Depot hash table allocation failed, disabling

I have rebooted in the kernel 6.1.0-9102b78b6f6a build on
"git checkout 9102b78b6f6ae6af3557114c265c266b312c1319", and this dmesg Stack Depot error
disappeared. :-/

There is nothing in between of commit 9102b78b6f6ae6af3557114c265c266b312c1319
and your commit 56a61617dd2276cbc56a6c868599716386d70041:

commit 56a61617dd2276cbc56a6c868599716386d70041 (refs/bisect/bad)
Author: Zhaoyang Huang <zhaoyang.huang@unisoc.com>
Date: Thu Oct 27 17:50:24 2022 +0800

mm: use stack_depot for recording kmemleak's backtrace

Using stack_depot to record kmemleak's backtrace which has been
implemented on slub for reducing redundant information.

[akpm@linux-foundation.org: fix build - remove now-unused __save_stack_trace()]
[zhaoyang.huang@unisoc.com: v3]
Link: https://lkml.kernel.org/r/1667101354-4669-1-git-send-email-zhaoyang.huang@unisoc.com
[akpm@linux-foundation.org: fix v3 layout oddities]
[akpm@linux-foundation.org: coding-style cleanups]
Link: https://lkml.kernel.org/r/1666864224-27541-1-git-send-email-zhaoyang.huang@unisoc.com
Signed-off-by: Zhaoyang Huang <zhaoyang.huang@unisoc.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: ke.wang <ke.wang@unisoc.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Zhaoyang Huang <huangzhaoyang@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

commit 9102b78b6f6ae6af3557114c265c266b312c1319 (refs/bisect/good-9102b78b6f6ae6af3557114c265c266b312c1319)
Author: Liam Howlett <liam.howlett@oracle.com>
Date: Tue Oct 25 17:37:23 2022 +0000

maple_tree: update copyright dates for test code

Add the span to the year of the development.

Link: https://lkml.kernel.org/r/20221025173709.2718725-1-Liam.Howlett@oracle.com
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Maybe I'm doing something wrong? I have used the same .config for all builds, just
changed CONFIG_LOCALVERSION.

Regards,
Mirsad

--
Mirsad Todorovac
System engineer
Faculty of Graphic Arts | Academy of Fine Arts
University of Zagreb
Republic of Croatia, the European Union