From: kernel test robot <lkp@intel.com>
To: Suren Baghdasaryan <surenb@google.com>, akpm@linux-foundation.org
Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
willy@infradead.org, liam.howlett@oracle.com,
lorenzo.stoakes@oracle.com, mhocko@suse.com, vbabka@suse.cz,
hannes@cmpxchg.org, mjguzik@gmail.com, oliver.sang@intel.com,
mgorman@techsingularity.net, david@redhat.com, peterx@redhat.com,
oleg@redhat.com, dave@stgolabs.net, paulmck@kernel.org,
brauner@kernel.org, dhowells@redhat.com, hdanton@sina.com,
hughd@google.com, minchan@google.com, jannh@google.com,
shakeel.butt@linux.dev, souravpanda@google.com,
pasha.tatashin@soleen.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, kernel-team@android.com,
surenb@google.com
Subject: Re: [PATCH 2/4] mm: move per-vma lock into vm_area_struct
Date: Tue, 12 Nov 2024 17:36:43 +0800 [thread overview]
Message-ID: <202411121742.VK3YF84e-lkp@intel.com> (raw)
In-Reply-To: <20241111205506.3404479-3-surenb@google.com>
Hi Suren,
kernel test robot noticed the following build warnings:
[auto build test WARNING on 931086f2a88086319afb57cd3925607e8cda0a9f]
url: https://github.com/intel-lab-lkp/linux/commits/Suren-Baghdasaryan/mm-introduce-vma_start_read_locked-_nested-helpers/20241112-050531
base: 931086f2a88086319afb57cd3925607e8cda0a9f
patch link: https://lore.kernel.org/r/20241111205506.3404479-3-surenb%40google.com
patch subject: [PATCH 2/4] mm: move per-vma lock into vm_area_struct
config: um-defconfig (https://download.01.org/0day-ci/archive/20241112/202411121742.VK3YF84e-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 592c0fe55f6d9a811028b5f3507be91458ab2713)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241112/202411121742.VK3YF84e-lkp@intel.com/reproduce)
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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202411121742.VK3YF84e-lkp@intel.com/
All warnings (new ones prefixed by >>):
| ^
In file included from ipc/msg.c:30:
In file included from include/linux/mm.h:1143:
In file included from include/linux/huge_mm.h:7:
In file included from include/linux/fs.h:33:
In file included from include/linux/percpu-rwsem.h:7:
In file included from include/linux/rcuwait.h:6:
In file included from include/linux/sched/signal.h:6:
include/linux/signal.h:255:10: warning: array index 1 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds]
255 | case 2: set->sig[1] = -1;
| ^ ~
arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here
24 | unsigned long sig[_NSIG_WORDS];
| ^
In file included from ipc/msg.c:30:
In file included from include/linux/mm.h:2234:
include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
518 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
In file included from ipc/msg.c:33:
In file included from include/linux/security.h:35:
In file included from include/linux/bpf.h:31:
In file included from include/linux/memcontrol.h:13:
In file included from include/linux/cgroup.h:26:
In file included from include/linux/kernel_stat.h:8:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from arch/um/include/asm/hardirq.h:5:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:14:
In file included from arch/um/include/asm/io.h:24:
include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
548 | val = __raw_readb(PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
561 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
| ^
In file included from ipc/msg.c:33:
In file included from include/linux/security.h:35:
In file included from include/linux/bpf.h:31:
In file included from include/linux/memcontrol.h:13:
In file included from include/linux/cgroup.h:26:
In file included from include/linux/kernel_stat.h:8:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from arch/um/include/asm/hardirq.h:5:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:14:
In file included from arch/um/include/asm/io.h:24:
include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
574 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
| ^
In file included from ipc/msg.c:33:
In file included from include/linux/security.h:35:
In file included from include/linux/bpf.h:31:
In file included from include/linux/memcontrol.h:13:
In file included from include/linux/cgroup.h:26:
In file included from include/linux/kernel_stat.h:8:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from arch/um/include/asm/hardirq.h:5:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:14:
In file included from arch/um/include/asm/io.h:24:
include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
585 | __raw_writeb(value, PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
595 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
605 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:693:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
693 | readsb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:701:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
701 | readsw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:709:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
709 | readsl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:718:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
718 | writesb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:727:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
727 | writesw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:736:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
736 | writesl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
>> ipc/msg.c:497:20: warning: implicit conversion from 'int' to 'unsigned short' changes value from 32768000 to 0 [-Wconstant-conversion]
497 | msginfo->msgseg = MSGSEG;
| ~ ^~~~~~
include/uapi/linux/msg.h:87:38: note: expanded from macro 'MSGSEG'
87 | #define MSGSEG (__MSGSEG <= 0xffff ? __MSGSEG : 0xffff)
| ^~~~~~~~
include/uapi/linux/msg.h:86:36: note: expanded from macro '__MSGSEG'
86 | #define __MSGSEG ((MSGPOOL * 1024) / MSGSSZ) /* max no. of segments */
| ~~~~~~~~~~~~~~~~~^~~~~~~~
63 warnings and 3 errors generated.
--
In file included from drivers/tty/tty_port.c:8:
In file included from include/linux/tty.h:11:
In file included from include/linux/tty_port.h:5:
In file included from include/linux/kfifo.h:40:
In file included from include/linux/dma-mapping.h:11:
In file included from include/linux/scatterlist.h:8:
include/linux/mm.h:877:2: error: call to undeclared function 'vma_lock_init'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
877 | vma_lock_init(&vma->vm_lock);
| ^
include/linux/mm.h:877:2: note: did you mean 'osq_lock_init'?
include/linux/osq_lock.h:23:20: note: 'osq_lock_init' declared here
23 | static inline void osq_lock_init(struct optimistic_spin_queue *lock)
| ^
In file included from drivers/tty/tty_port.c:8:
In file included from include/linux/tty.h:11:
In file included from include/linux/tty_port.h:5:
In file included from include/linux/kfifo.h:40:
In file included from include/linux/dma-mapping.h:11:
In file included from include/linux/scatterlist.h:8:
include/linux/mm.h:877:22: error: no member named 'vm_lock' in 'struct vm_area_struct'
877 | vma_lock_init(&vma->vm_lock);
| ~~~ ^
include/linux/mm.h:878:7: error: no member named 'vm_lock_seq' in 'struct vm_area_struct'
878 | vma->vm_lock_seq = UINT_MAX;
| ~~~ ^
In file included from drivers/tty/tty_port.c:8:
In file included from include/linux/tty.h:11:
In file included from include/linux/tty_port.h:5:
In file included from include/linux/kfifo.h:40:
In file included from include/linux/dma-mapping.h:11:
In file included from include/linux/scatterlist.h:8:
In file included from include/linux/mm.h:2234:
include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
518 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
In file included from drivers/tty/tty_port.c:8:
In file included from include/linux/tty.h:11:
In file included from include/linux/tty_port.h:5:
In file included from include/linux/kfifo.h:40:
In file included from include/linux/dma-mapping.h:11:
In file included from include/linux/scatterlist.h:9:
In file included from arch/um/include/asm/io.h:24:
include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
548 | val = __raw_readb(PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
561 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
| ^
In file included from drivers/tty/tty_port.c:8:
In file included from include/linux/tty.h:11:
In file included from include/linux/tty_port.h:5:
In file included from include/linux/kfifo.h:40:
In file included from include/linux/dma-mapping.h:11:
In file included from include/linux/scatterlist.h:9:
In file included from arch/um/include/asm/io.h:24:
include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
574 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
| ^
In file included from drivers/tty/tty_port.c:8:
In file included from include/linux/tty.h:11:
In file included from include/linux/tty_port.h:5:
In file included from include/linux/kfifo.h:40:
In file included from include/linux/dma-mapping.h:11:
In file included from include/linux/scatterlist.h:9:
In file included from arch/um/include/asm/io.h:24:
include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
585 | __raw_writeb(value, PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
595 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
605 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:693:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
693 | readsb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:701:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
701 | readsw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:709:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
709 | readsl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:718:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
718 | writesb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:727:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
727 | writesw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:736:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
736 | writesl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
>> drivers/tty/tty_port.c:266:2: warning: implicit conversion from 'unsigned long' to 'unsigned int' changes value from 18446744073709551615 to 4294967295 [-Wconstant-conversion]
266 | INIT_KFIFO(port->xmit_fifo);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/kfifo.h:136:69: note: expanded from macro 'INIT_KFIFO'
136 | __kfifo->mask = __is_kfifo_ptr(__tmp) ? 0 : ARRAY_SIZE(__tmp->buf) - 1;\
| ~ ~~~~~~~~~~~~~~~~~~~~~~~^~~
14 warnings and 3 errors generated.
vim +497 ipc/msg.c
a0d092fc2df845 Pierre Peiffer 2008-04-29 476
156d9ed1260ee5 Al Viro 2017-07-09 477 static int msgctl_info(struct ipc_namespace *ns, int msqid,
156d9ed1260ee5 Al Viro 2017-07-09 478 int cmd, struct msginfo *msginfo)
a0d092fc2df845 Pierre Peiffer 2008-04-29 479 {
2cafed30f150f7 Davidlohr Bueso 2013-07-08 480 int err;
27c331a1746142 Manfred Spraul 2018-08-21 481 int max_idx;
5a06a363ef4844 Ingo Molnar 2006-07-30 482
5a06a363ef4844 Ingo Molnar 2006-07-30 483 /*
5a06a363ef4844 Ingo Molnar 2006-07-30 484 * We must not return kernel stack data.
^1da177e4c3f41 Linus Torvalds 2005-04-16 485 * due to padding, it's not enough
^1da177e4c3f41 Linus Torvalds 2005-04-16 486 * to set all member fields.
^1da177e4c3f41 Linus Torvalds 2005-04-16 487 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 488 err = security_msg_queue_msgctl(NULL, cmd);
^1da177e4c3f41 Linus Torvalds 2005-04-16 489 if (err)
^1da177e4c3f41 Linus Torvalds 2005-04-16 490 return err;
^1da177e4c3f41 Linus Torvalds 2005-04-16 491
156d9ed1260ee5 Al Viro 2017-07-09 492 memset(msginfo, 0, sizeof(*msginfo));
156d9ed1260ee5 Al Viro 2017-07-09 493 msginfo->msgmni = ns->msg_ctlmni;
156d9ed1260ee5 Al Viro 2017-07-09 494 msginfo->msgmax = ns->msg_ctlmax;
156d9ed1260ee5 Al Viro 2017-07-09 495 msginfo->msgmnb = ns->msg_ctlmnb;
156d9ed1260ee5 Al Viro 2017-07-09 496 msginfo->msgssz = MSGSSZ;
156d9ed1260ee5 Al Viro 2017-07-09 @497 msginfo->msgseg = MSGSEG;
d9a605e40b1376 Davidlohr Bueso 2013-09-11 498 down_read(&msg_ids(ns).rwsem);
72d1e611082eda Jiebin Sun 2022-09-14 499 if (cmd == MSG_INFO)
156d9ed1260ee5 Al Viro 2017-07-09 500 msginfo->msgpool = msg_ids(ns).in_use;
72d1e611082eda Jiebin Sun 2022-09-14 501 max_idx = ipc_get_maxidx(&msg_ids(ns));
72d1e611082eda Jiebin Sun 2022-09-14 502 up_read(&msg_ids(ns).rwsem);
72d1e611082eda Jiebin Sun 2022-09-14 503 if (cmd == MSG_INFO) {
72d1e611082eda Jiebin Sun 2022-09-14 504 msginfo->msgmap = min_t(int,
72d1e611082eda Jiebin Sun 2022-09-14 505 percpu_counter_sum(&ns->percpu_msg_hdrs),
72d1e611082eda Jiebin Sun 2022-09-14 506 INT_MAX);
72d1e611082eda Jiebin Sun 2022-09-14 507 msginfo->msgtql = min_t(int,
72d1e611082eda Jiebin Sun 2022-09-14 508 percpu_counter_sum(&ns->percpu_msg_bytes),
72d1e611082eda Jiebin Sun 2022-09-14 509 INT_MAX);
^1da177e4c3f41 Linus Torvalds 2005-04-16 510 } else {
156d9ed1260ee5 Al Viro 2017-07-09 511 msginfo->msgmap = MSGMAP;
156d9ed1260ee5 Al Viro 2017-07-09 512 msginfo->msgpool = MSGPOOL;
156d9ed1260ee5 Al Viro 2017-07-09 513 msginfo->msgtql = MSGTQL;
^1da177e4c3f41 Linus Torvalds 2005-04-16 514 }
27c331a1746142 Manfred Spraul 2018-08-21 515 return (max_idx < 0) ? 0 : max_idx;
^1da177e4c3f41 Linus Torvalds 2005-04-16 516 }
2cafed30f150f7 Davidlohr Bueso 2013-07-08 517
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
next prev parent reply other threads:[~2024-11-12 9:37 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-11 20:55 [PATCH 0/4] " Suren Baghdasaryan
2024-11-11 20:55 ` [PATCH 1/4] mm: introduce vma_start_read_locked{_nested} helpers Suren Baghdasaryan
2024-11-11 20:55 ` [PATCH 2/4] mm: move per-vma lock into vm_area_struct Suren Baghdasaryan
2024-11-12 9:36 ` kernel test robot [this message]
2024-11-12 9:47 ` kernel test robot
2024-11-12 10:18 ` kernel test robot
2024-11-12 15:57 ` Vlastimil Babka
2024-11-12 16:08 ` Suren Baghdasaryan
2024-11-12 16:58 ` Suren Baghdasaryan
2024-11-11 20:55 ` [PATCH 3/4] mm: replace rw_semaphore with atomic_t in vma_lock Suren Baghdasaryan
2024-11-12 0:06 ` Andrew Morton
2024-11-12 0:52 ` Suren Baghdasaryan
2024-11-12 0:35 ` Davidlohr Bueso
2024-11-12 0:59 ` Suren Baghdasaryan
2024-11-12 4:58 ` Matthew Wilcox
2024-11-12 15:18 ` Suren Baghdasaryan
2024-12-10 22:38 ` Peter Zijlstra
2024-12-10 23:37 ` Suren Baghdasaryan
2024-12-11 8:25 ` Peter Zijlstra
2024-12-11 15:20 ` Suren Baghdasaryan
2024-12-12 3:01 ` Suren Baghdasaryan
2024-12-12 9:16 ` Peter Zijlstra
2024-12-12 14:17 ` Suren Baghdasaryan
2024-12-12 14:19 ` Suren Baghdasaryan
2024-12-13 4:48 ` Suren Baghdasaryan
2024-12-13 9:57 ` Peter Zijlstra
2024-12-13 17:45 ` Suren Baghdasaryan
2024-12-13 18:19 ` Matthew Wilcox
2024-12-13 18:35 ` Peter Zijlstra
2024-12-13 18:37 ` Suren Baghdasaryan
2024-12-16 19:32 ` Suren Baghdasaryan
2024-12-13 9:22 ` Peter Zijlstra
2024-12-13 17:41 ` Suren Baghdasaryan
2024-11-11 20:55 ` [PATCH 4/4] mm: move lesser used vma_area_struct members into the last cacheline Suren Baghdasaryan
2024-11-12 10:07 ` Vlastimil Babka
2024-11-12 15:45 ` Suren Baghdasaryan
2024-11-11 21:41 ` [PATCH 0/4] move per-vma lock into vm_area_struct Suren Baghdasaryan
2024-11-12 2:48 ` Liam R. Howlett
2024-11-12 3:27 ` Suren Baghdasaryan
2024-11-11 22:18 ` Davidlohr Bueso
2024-11-11 23:19 ` Suren Baghdasaryan
2024-11-12 0:03 ` Davidlohr Bueso
2024-11-12 0:43 ` Suren Baghdasaryan
2024-11-12 0:11 ` Andrew Morton
2024-11-12 0:48 ` Suren Baghdasaryan
2024-11-12 2:35 ` Liam R. Howlett
2024-11-12 3:23 ` Suren Baghdasaryan
2024-11-12 9:39 ` Lorenzo Stoakes
2024-11-12 15:38 ` Suren Baghdasaryan
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