[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PULL 07/38] linux-user: do prlimit selectively
From: |
Laurent Vivier |
Subject: |
[PULL 07/38] linux-user: do prlimit selectively |
Date: |
Mon, 16 Mar 2020 17:15:19 +0100 |
From: Tobias Koch <address@hidden>
Analogous to what commit 5dfa88f7 did for setrlimit, this commit
selectively ignores limits for memory-related resources in prlimit64
calls. This is to prevent too restrictive limits from causing QEMU
itself to malfunction.
Signed-off-by: Tobias Koch <address@hidden>
Reviewed-by: Laurent Vivier <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Laurent Vivier <address@hidden>
---
linux-user/syscall.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 811495c3a0bc..be676c3a4fb4 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -11904,7 +11904,10 @@ static abi_long do_syscall1(void *cpu_env, int num,
abi_long arg1,
struct target_rlimit64 *target_rnew, *target_rold;
struct host_rlimit64 rnew, rold, *rnewp = 0;
int resource = target_to_host_resource(arg2);
- if (arg3) {
+
+ if (arg3 && (resource != RLIMIT_AS &&
+ resource != RLIMIT_DATA &&
+ resource != RLIMIT_STACK)) {
if (!lock_user_struct(VERIFY_READ, target_rnew, arg3, 1)) {
return -TARGET_EFAULT;
}
--
2.24.1
- [PULL 00/38] Linux user for 5.0 patches, Laurent Vivier, 2020/03/16
- [PULL 02/38] linux-user/i386: Split out gen_signal, Laurent Vivier, 2020/03/16
- [PULL 07/38] linux-user: do prlimit selectively,
Laurent Vivier <=
- [PULL 10/38] linux-user: Protect more syscalls, Laurent Vivier, 2020/03/16
- [PULL 35/38] scripts: add a script to generate syscall_nr.h, Laurent Vivier, 2020/03/16
- [PULL 23/38] linux-user, s390x: remove syscall definitions for !TARGET_S390X, Laurent Vivier, 2020/03/16
- [PULL 25/38] linux-user, sparc, sparc64: add syscall table generation support, Laurent Vivier, 2020/03/16
- [PULL 19/38] linux-user, sh4: add syscall table generation support, Laurent Vivier, 2020/03/16
- [PULL 09/38] linux-user: Update TASK_UNMAPPED_BASE for aarch64, Laurent Vivier, 2020/03/16
- [PULL 05/38] linux-user: Flush out implementation of gettimeofday, Laurent Vivier, 2020/03/16
- [PULL 16/38] linux-user, hppa: add syscall table generation support, Laurent Vivier, 2020/03/16
- [PULL 03/38] linux-user/i386: Emulate x86_64 vsyscalls, Laurent Vivier, 2020/03/16
- [PULL 22/38] linux-user, ppc: add syscall table generation support, Laurent Vivier, 2020/03/16