include/linux/list.h:72:19: warning: storing the address of local variable 'pbufl' in '*&buf_33(D)->list.prev'
From: kernel test robot
Date: Sun Apr 26 2026 - 01:32:41 EST
Hi Shiraz,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 897d54018cc9aa97fd1529ca08a53b429d05a566
commit: fa0cf568fd76550c1ddb806c03a65a1a4a1ea909 RDMA/irdma: Add irdma Kconfig/Makefile and remove i40iw
date: 4 years, 11 months ago
config: mips-allyesconfig (https://download.01.org/0day-ci/archive/20260426/202604261334.fKf5nOTO-lkp@xxxxxxxxx/config)
compiler: mips-linux-gcc (GCC) 15.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260426/202604261334.fKf5nOTO-lkp@xxxxxxxxx/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
| Fixes: fa0cf568fd76 ("RDMA/irdma: Add irdma Kconfig/Makefile and remove i40iw")
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202604261334.fKf5nOTO-lkp@xxxxxxxxx/
All warnings (new ones prefixed by >>):
In file included from include/linux/pci.h:32,
from drivers/infiniband/hw/irdma/osdep.h:6,
from drivers/infiniband/hw/irdma/puda.c:3:
In function '__list_add',
inlined from 'list_add' at include/linux/list.h:86:2,
inlined from 'irdma_ieq_handle_partial' at drivers/infiniband/hw/irdma/puda.c:1384:2:
>> include/linux/list.h:72:19: warning: storing the address of local variable 'pbufl' in '*&buf_33(D)->list.prev' [-Wdangling-pointer=]
72 | new->prev = prev;
| ~~~~~~~~~~^~~~~~
drivers/infiniband/hw/irdma/puda.c: In function 'irdma_ieq_handle_partial':
drivers/infiniband/hw/irdma/puda.c:1377:26: note: 'pbufl' declared here
1377 | struct list_head pbufl; /* partial buffer list */
| ^~~~~
drivers/infiniband/hw/irdma/puda.c:1371:49: note: 'buf' declared here
1371 | struct irdma_puda_buf *buf, u16 fpdu_len)
| ~~~~~~~~~~~~~~~~~~~~~~~^~~
vim +72 include/linux/list.h
d7c816733d501b Kees Cook 2016-08-17 56
^1da177e4c3f41 Linus Torvalds 2005-04-16 57 /*
^1da177e4c3f41 Linus Torvalds 2005-04-16 58 * Insert a new entry between two known consecutive entries.
^1da177e4c3f41 Linus Torvalds 2005-04-16 59 *
^1da177e4c3f41 Linus Torvalds 2005-04-16 60 * This is only for internal list manipulation where we know
^1da177e4c3f41 Linus Torvalds 2005-04-16 61 * the prev/next entries already!
^1da177e4c3f41 Linus Torvalds 2005-04-16 62 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 63 static inline void __list_add(struct list_head *new,
^1da177e4c3f41 Linus Torvalds 2005-04-16 64 struct list_head *prev,
^1da177e4c3f41 Linus Torvalds 2005-04-16 65 struct list_head *next)
^1da177e4c3f41 Linus Torvalds 2005-04-16 66 {
d7c816733d501b Kees Cook 2016-08-17 67 if (!__list_add_valid(new, prev, next))
d7c816733d501b Kees Cook 2016-08-17 68 return;
d7c816733d501b Kees Cook 2016-08-17 69
^1da177e4c3f41 Linus Torvalds 2005-04-16 70 next->prev = new;
^1da177e4c3f41 Linus Torvalds 2005-04-16 71 new->next = next;
^1da177e4c3f41 Linus Torvalds 2005-04-16 @72 new->prev = prev;
1c97be677f72b3 Paul E. McKenney 2015-09-20 73 WRITE_ONCE(prev->next, new);
^1da177e4c3f41 Linus Torvalds 2005-04-16 74 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 75
^1da177e4c3f41 Linus Torvalds 2005-04-16 76 /**
^1da177e4c3f41 Linus Torvalds 2005-04-16 77 * list_add - add a new entry
^1da177e4c3f41 Linus Torvalds 2005-04-16 78 * @new: new entry to be added
^1da177e4c3f41 Linus Torvalds 2005-04-16 79 * @head: list head to add it after
^1da177e4c3f41 Linus Torvalds 2005-04-16 80 *
^1da177e4c3f41 Linus Torvalds 2005-04-16 81 * Insert a new entry after the specified head.
^1da177e4c3f41 Linus Torvalds 2005-04-16 82 * This is good for implementing stacks.
^1da177e4c3f41 Linus Torvalds 2005-04-16 83 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 84 static inline void list_add(struct list_head *new, struct list_head *head)
^1da177e4c3f41 Linus Torvalds 2005-04-16 85 {
^1da177e4c3f41 Linus Torvalds 2005-04-16 @86 __list_add(new, head, head->next);
^1da177e4c3f41 Linus Torvalds 2005-04-16 87 }
199a9afc3dbe98 Dave Jones 2006-09-29 88
:::::: The code at line 72 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2
:::::: TO: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx>
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