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In the robust futexes list head, futex_offset shall be signed,

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and glibc actually supplies negative offsets. Change l_ulong to l_long.

Submitted by:	dchagin
This commit is contained in:
Konstantin Belousov 2008-11-16 15:45:41 +00:00
parent d47e6e6bd1
commit 62162dfc94
3 changed files with 4 additions and 4 deletions
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2
sys/amd64/linux32/linux.h
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@ -892,7 +892,7 @@ struct linux_robust_list {
struct linux_robust_list_head {
struct linux_robust_list list;
l_ulong futex_offset;
l_long futex_offset;
l_uintptr_t pending_list;
};

4
sys/compat/linux/linux_futex.c
View File

@ -652,7 +652,7 @@ release_futexes(struct proc *p)
struct linux_robust_list *entry, *next_entry, *pending;
unsigned int limit = 2048, pi, next_pi, pip;
struct linux_emuldata *em;
l_ulong futex_offset;
l_long futex_offset;
int rc;
em = em_find(p, EMUL_DONTLOCK);
@ -664,7 +664,7 @@ release_futexes(struct proc *p)
if (fetch_robust_entry(&entry, PTRIN(&head->list.next), &pi))
return;
if (copyin(&head->futex_offset, &futex_offset, sizeof(l_ulong)))
if (copyin(&head->futex_offset, &futex_offset, sizeof(futex_offset)))
return;
if (fetch_robust_entry(&pending, PTRIN(&head->pending_list), &pip))

2
sys/i386/linux/linux.h
View File

@ -862,7 +862,7 @@ struct linux_robust_list {
struct linux_robust_list_head {
struct linux_robust_list list;
l_ulong futex_offset;
l_long futex_offset;
struct linux_robust_list *pending_list;
};