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Merge r289055 to amd64/linux32:

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linux: fix handling of out-of-bounds syscall attempts

Due to an off by one the code would read an entry past the table, as
opposed to the last entry which contains the nosys handler.
This commit is contained in:
John Baldwin 2015-10-22 21:23:58 +00:00
parent d9a4f21fa7
commit 5047105b71
1 changed files with 1 additions and 1 deletions
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2
sys/amd64/linux32/linux32_sysvec.c
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@ -741,7 +741,7 @@ linux32_fetch_syscall_args(struct thread *td, struct syscall_args *sa)
if (sa->code >= p->p_sysent->sv_size)
/* nosys */
sa->callp = &p->p_sysent->sv_table[LINUX_SYS_MAXSYSCALL];
sa->callp = &p->p_sysent->sv_table[p->p_sysent->sv_size - 1];
else
sa->callp = &p->p_sysent->sv_table[sa->code];
sa->narg = sa->callp->sy_narg;