tree: https://gitee.com/openeuler/kernel.git OLK-5.10
head: cbfb00d89c3b9971c3f0732b4f34d4e674bff5d8
commit: 050383882de382969e4fb8362235749b232cccae [16131/30000] bpf: support BPF_PROG_QUERY for progs attached to sockmap
config: x86_64-randconfig-122-20240910 (https://download.01.org/0day-ci/archive/20240911/202409110644.OlZbU3Ny-lkp@…)
compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240911/202409110644.OlZbU3Ny-lkp@…)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp(a)intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202409110644.OlZbU3Ny-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
>> net/core/sock_map.c:1501:5: sparse: sparse: symbol 'sock_map_prog_lookup' was not declared. Should it be static?
vim +/sock_map_prog_lookup +1501 net/core/sock_map.c
1500
> 1501 int sock_map_prog_lookup(struct bpf_map *map, struct bpf_prog ***pprog,
1502 u32 which)
1503 {
1504 struct sk_psock_progs *progs = sock_map_progs(map);
1505
1506 if (!progs)
1507 return -EOPNOTSUPP;
1508
1509 switch (which) {
1510 case BPF_SK_MSG_VERDICT:
1511 *pprog = &progs->msg_parser;
1512 break;
1513 case BPF_SK_SKB_STREAM_PARSER:
1514 *pprog = &progs->skb_parser;
1515 break;
1516 case BPF_SK_SKB_STREAM_VERDICT:
1517 *pprog = &progs->skb_verdict;
1518 break;
1519 default:
1520 return -EOPNOTSUPP;
1521 }
1522 return 0;
1523 }
1524
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0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
Hi Geert,
FYI, the error/warning still remains.
tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS
head: bf039567abd9303dc03746afaaf0854f41ed853b
commit: 9dae7e237a64858407b7626260bad53aa13c9198 [2662/23703] serial: sh-sci: Fix locking in sci_submit_rx()
config: arm64-randconfig-002-20240911 (https://download.01.org/0day-ci/archive/20240911/202409110303.bhVqMzMo-lkp@…)
compiler: aarch64-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240911/202409110303.bhVqMzMo-lkp@…)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp(a)intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202409110303.bhVqMzMo-lkp@intel.com/
Note: it may well be a FALSE warning. FWIW you are at least aware of it now.
http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings
All warnings (new ones prefixed by >>):
In file included from include/linux/irqflags.h:16,
from include/linux/spinlock.h:54,
from include/linux/rwsem.h:16,
from include/linux/notifier.h:15,
from include/linux/clk.h:17,
from drivers/tty/serial/sh-sci.c:24:
In function 'arch_local_irq_restore',
inlined from '__raw_spin_unlock_irqrestore' at include/linux/spinlock_api_smp.h:160:2,
inlined from 'spin_unlock_irqrestore' at include/linux/spinlock.h:384:2,
inlined from 'sci_submit_rx' at drivers/tty/serial/sh-sci.c:1376:3:
>> arch/arm64/include/asm/irqflags.h:88:9: warning: 'flags' may be used uninitialized [-Wmaybe-uninitialized]
88 | asm volatile(
| ^~~
drivers/tty/serial/sh-sci.c: In function 'sci_submit_rx':
drivers/tty/serial/sh-sci.c:1338:23: note: 'flags' was declared here
1338 | unsigned long flags;
| ^~~~~
In file included from drivers/tty/serial/sh-sci.c:53:
In function 'tty_insert_flip_char',
inlined from 'sci_handle_errors' at drivers/tty/serial/sh-sci.c:940:7:
include/linux/tty_flip.h:27:53: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
27 | *flag_buf_ptr(tb, tb->used) = flag;
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
In file included from include/linux/serial_core.h:29,
from include/linux/serial_sci.h:6,
from drivers/tty/serial/sh-sci.c:46:
include/linux/tty.h: In function 'sci_handle_errors':
include/linux/tty.h:69:23: note: destination object 'data' of size 0
69 | unsigned long data[0];
| ^~~~
In function 'tty_insert_flip_char',
inlined from 'sci_handle_errors' at drivers/tty/serial/sh-sci.c:940:7:
include/linux/tty_flip.h:28:47: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
28 | *char_buf_ptr(tb, tb->used++) = ch;
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
include/linux/tty.h: In function 'sci_handle_errors':
include/linux/tty.h:69:23: note: destination object 'data' of size 0
69 | unsigned long data[0];
| ^~~~
In function 'tty_insert_flip_char',
inlined from 'sci_handle_errors' at drivers/tty/serial/sh-sci.c:950:7:
include/linux/tty_flip.h:27:53: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
27 | *flag_buf_ptr(tb, tb->used) = flag;
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
include/linux/tty.h: In function 'sci_handle_errors':
include/linux/tty.h:69:23: note: destination object 'data' of size 0
69 | unsigned long data[0];
| ^~~~
In function 'tty_insert_flip_char',
inlined from 'sci_handle_errors' at drivers/tty/serial/sh-sci.c:950:7:
include/linux/tty_flip.h:28:47: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
28 | *char_buf_ptr(tb, tb->used++) = ch;
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
include/linux/tty.h: In function 'sci_handle_errors':
include/linux/tty.h:69:23: note: destination object 'data' of size 0
69 | unsigned long data[0];
| ^~~~
In function 'tty_insert_flip_char',
inlined from 'sci_handle_errors' at drivers/tty/serial/sh-sci.c:960:7:
include/linux/tty_flip.h:27:53: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
27 | *flag_buf_ptr(tb, tb->used) = flag;
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
include/linux/tty.h: In function 'sci_handle_errors':
include/linux/tty.h:69:23: note: destination object 'data' of size 0
69 | unsigned long data[0];
| ^~~~
In function 'tty_insert_flip_char',
inlined from 'sci_handle_errors' at drivers/tty/serial/sh-sci.c:960:7:
include/linux/tty_flip.h:28:47: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
28 | *char_buf_ptr(tb, tb->used++) = ch;
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
include/linux/tty.h: In function 'sci_handle_errors':
include/linux/tty.h:69:23: note: destination object 'data' of size 0
69 | unsigned long data[0];
| ^~~~
In function 'tty_insert_flip_char',
inlined from 'sci_receive_chars' at drivers/tty/serial/sh-sci.c:906:5:
include/linux/tty_flip.h:27:53: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
27 | *flag_buf_ptr(tb, tb->used) = flag;
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
include/linux/tty.h: In function 'sci_receive_chars':
include/linux/tty.h:69:23: note: destination object 'data' of size 0
69 | unsigned long data[0];
| ^~~~
In function 'tty_insert_flip_char',
inlined from 'sci_receive_chars' at drivers/tty/serial/sh-sci.c:906:5:
include/linux/tty_flip.h:28:47: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
28 | *char_buf_ptr(tb, tb->used++) = ch;
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
include/linux/tty.h: In function 'sci_receive_chars':
include/linux/tty.h:69:23: note: destination object 'data' of size 0
69 | unsigned long data[0];
| ^~~~
In function 'tty_insert_flip_char',
inlined from 'sci_receive_chars' at drivers/tty/serial/sh-sci.c:883:5:
include/linux/tty_flip.h:27:53: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
27 | *flag_buf_ptr(tb, tb->used) = flag;
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
include/linux/tty.h: In function 'sci_receive_chars':
include/linux/tty.h:69:23: note: destination object 'data' of size 0
69 | unsigned long data[0];
| ^~~~
In function 'tty_insert_flip_char',
inlined from 'sci_receive_chars' at drivers/tty/serial/sh-sci.c:883:5:
include/linux/tty_flip.h:28:47: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
28 | *char_buf_ptr(tb, tb->used++) = ch;
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~
include/linux/tty.h: In function 'sci_receive_chars':
include/linux/tty.h:69:23: note: destination object 'data' of size 0
69 | unsigned long data[0];
| ^~~~
vim +/flags +88 arch/arm64/include/asm/irqflags.h
fb9bd7d6df81ddf Marc Zyngier 2012-03-05 82
fb9bd7d6df81ddf Marc Zyngier 2012-03-05 83 /*
fb9bd7d6df81ddf Marc Zyngier 2012-03-05 84 * restore saved IRQ state
fb9bd7d6df81ddf Marc Zyngier 2012-03-05 85 */
fb9bd7d6df81ddf Marc Zyngier 2012-03-05 86 static inline void arch_local_irq_restore(unsigned long flags)
fb9bd7d6df81ddf Marc Zyngier 2012-03-05 87 {
fb9bd7d6df81ddf Marc Zyngier 2012-03-05 @88 asm volatile(
fb9bd7d6df81ddf Marc Zyngier 2012-03-05 89 "msr daif, %0 // arch_local_irq_restore"
fb9bd7d6df81ddf Marc Zyngier 2012-03-05 90 :
fb9bd7d6df81ddf Marc Zyngier 2012-03-05 91 : "r" (flags)
fb9bd7d6df81ddf Marc Zyngier 2012-03-05 92 : "memory");
fb9bd7d6df81ddf Marc Zyngier 2012-03-05 93 }
fb9bd7d6df81ddf Marc Zyngier 2012-03-05 94
:::::: The code at line 88 was first introduced by commit
:::::: fb9bd7d6df81ddf1e7ab6648ac89ddbe0625b26b arm64: IRQ handling
:::::: TO: Marc Zyngier <marc.zyngier(a)arm.com>
:::::: CC: Catalin Marinas <catalin.marinas(a)arm.com>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
tree: https://gitee.com/openeuler/kernel.git OLK-5.10
head: cbfb00d89c3b9971c3f0732b4f34d4e674bff5d8
commit: e037ee4a8deaff7c579618c0aba1f066d6d14b11 [3775/30000] mm, page_alloc: disable pcplists during memory offline
config: x86_64-randconfig-123-20240910 (https://download.01.org/0day-ci/archive/20240911/202409110302.AhDyE0gr-lkp@…)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240911/202409110302.AhDyE0gr-lkp@…)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp(a)intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202409110302.AhDyE0gr-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
>> mm/page_alloc.c:3036:6: sparse: sparse: symbol '__drain_all_pages' was not declared. Should it be static?
>> mm/page_alloc.c:6634:6: sparse: sparse: symbol '__zone_set_pageset_high_and_batch' was not declared. Should it be static?
mm/page_alloc.c: note: in included file (through include/linux/mm.h):
include/linux/gfp.h:327:27: sparse: sparse: restricted gfp_t degrades to integer
include/linux/gfp.h:327:27: sparse: sparse: restricted gfp_t degrades to integer
vim +/__drain_all_pages +3036 mm/page_alloc.c
3025
3026 /*
3027 * The implementation of drain_all_pages(), exposing an extra parameter to
3028 * drain on all cpus.
3029 *
3030 * drain_all_pages() is optimized to only execute on cpus where pcplists are
3031 * not empty. The check for non-emptiness can however race with a free to
3032 * pcplist that has not yet increased the pcp->count from 0 to 1. Callers
3033 * that need the guarantee that every CPU has drained can disable the
3034 * optimizing racy check.
3035 */
> 3036 void __drain_all_pages(struct zone *zone, bool force_all_cpus)
3037 {
3038 int cpu;
3039
3040 /*
3041 * Allocate in the BSS so we wont require allocation in
3042 * direct reclaim path for CONFIG_CPUMASK_OFFSTACK=y
3043 */
3044 static cpumask_t cpus_with_pcps;
3045
3046 /*
3047 * Make sure nobody triggers this path before mm_percpu_wq is fully
3048 * initialized.
3049 */
3050 if (WARN_ON_ONCE(!mm_percpu_wq))
3051 return;
3052
3053 /*
3054 * Do not drain if one is already in progress unless it's specific to
3055 * a zone. Such callers are primarily CMA and memory hotplug and need
3056 * the drain to be complete when the call returns.
3057 */
3058 if (unlikely(!mutex_trylock(&pcpu_drain_mutex))) {
3059 if (!zone)
3060 return;
3061 mutex_lock(&pcpu_drain_mutex);
3062 }
3063
3064 /*
3065 * We don't care about racing with CPU hotplug event
3066 * as offline notification will cause the notified
3067 * cpu to drain that CPU pcps and on_each_cpu_mask
3068 * disables preemption as part of its processing
3069 */
3070 for_each_online_cpu(cpu) {
3071 struct per_cpu_pageset *pcp;
3072 struct zone *z;
3073 bool has_pcps = false;
3074
3075 if (force_all_cpus) {
3076 /*
3077 * The pcp.count check is racy, some callers need a
3078 * guarantee that no cpu is missed.
3079 */
3080 has_pcps = true;
3081 } else if (zone) {
3082 pcp = per_cpu_ptr(zone->pageset, cpu);
3083 if (pcp->pcp.count)
3084 has_pcps = true;
3085 } else {
3086 for_each_populated_zone(z) {
3087 pcp = per_cpu_ptr(z->pageset, cpu);
3088 if (pcp->pcp.count) {
3089 has_pcps = true;
3090 break;
3091 }
3092 }
3093 }
3094
3095 if (has_pcps)
3096 cpumask_set_cpu(cpu, &cpus_with_pcps);
3097 else
3098 cpumask_clear_cpu(cpu, &cpus_with_pcps);
3099 }
3100
3101 for_each_cpu(cpu, &cpus_with_pcps) {
3102 struct pcpu_drain *drain = per_cpu_ptr(&pcpu_drain, cpu);
3103
3104 drain->zone = zone;
3105 INIT_WORK(&drain->work, drain_local_pages_wq);
3106 queue_work_on(cpu, mm_percpu_wq, &drain->work);
3107 }
3108 for_each_cpu(cpu, &cpus_with_pcps)
3109 flush_work(&per_cpu_ptr(&pcpu_drain, cpu)->work);
3110
3111 mutex_unlock(&pcpu_drain_mutex);
3112 }
3113
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