diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-04-22 22:51:36 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-05-22 05:59:21 +0200 |
| commit | 187cd44e147ec7245ddd97bbd3305d29583288a9 (patch) | |
| tree | 53d312b49553b7000a1e06d055224759a5f75332 | |
| parent | avr32: struct old_sigaction is never used (diff) | |
| download | linux-187cd44e147ec7245ddd97bbd3305d29583288a9.tar.xz linux-187cd44e147ec7245ddd97bbd3305d29583288a9.zip | |
sparc: missing checks of __get_user()/__put_user() return values
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | arch/sparc/kernel/signal32.c | 10 | ||||
| -rw-r--r-- | arch/sparc/kernel/sys_sparc_32.c | 12 |
2 files changed, 12 insertions, 10 deletions
diff --git a/arch/sparc/kernel/signal32.c b/arch/sparc/kernel/signal32.c index 948700fb9036..bb1513e45f1a 100644 --- a/arch/sparc/kernel/signal32.c +++ b/arch/sparc/kernel/signal32.c @@ -215,8 +215,9 @@ void do_sigreturn32(struct pt_regs *regs) (((unsigned long) sf) & 3)) goto segv; - get_user(pc, &sf->info.si_regs.pc); - __get_user(npc, &sf->info.si_regs.npc); + if (get_user(pc, &sf->info.si_regs.pc) || + __get_user(npc, &sf->info.si_regs.npc)) + goto segv; if ((pc | npc) & 3) goto segv; @@ -305,8 +306,9 @@ asmlinkage void do_rt_sigreturn32(struct pt_regs *regs) (((unsigned long) sf) & 3)) goto segv; - get_user(pc, &sf->regs.pc); - __get_user(npc, &sf->regs.npc); + if (get_user(pc, &sf->regs.pc) || + __get_user(npc, &sf->regs.npc)) + goto segv; if ((pc | npc) & 3) goto segv; diff --git a/arch/sparc/kernel/sys_sparc_32.c b/arch/sparc/kernel/sys_sparc_32.c index 627e89af1d71..cd99c1a7870f 100644 --- a/arch/sparc/kernel/sys_sparc_32.c +++ b/arch/sparc/kernel/sys_sparc_32.c @@ -184,10 +184,10 @@ sparc_sigaction (int sig, const struct old_sigaction __user *act, if (!access_ok(VERIFY_READ, act, sizeof(*act)) || __get_user(new_ka.sa.sa_handler, &act->sa_handler) || - __get_user(new_ka.sa.sa_restorer, &act->sa_restorer)) + __get_user(new_ka.sa.sa_restorer, &act->sa_restorer) || + __get_user(new_ka.sa.sa_flags, &act->sa_flags) || + __get_user(mask, &act->sa_mask)) return -EFAULT; - __get_user(new_ka.sa.sa_flags, &act->sa_flags); - __get_user(mask, &act->sa_mask); siginitset(&new_ka.sa.sa_mask, mask); new_ka.ka_restorer = NULL; } @@ -202,10 +202,10 @@ sparc_sigaction (int sig, const struct old_sigaction __user *act, */ if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) || __put_user(old_ka.sa.sa_handler, &oact->sa_handler) || - __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer)) + __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer) || + __put_user(old_ka.sa.sa_flags, &oact->sa_flags) || + __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask)) return -EFAULT; - __put_user(old_ka.sa.sa_flags, &oact->sa_flags); - __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask); } return ret; |