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[PULL v4 02/32] linux-user: do prlimit selectively
From: |
Laurent Vivier |
Subject: |
[PULL v4 02/32] linux-user: do prlimit selectively |
Date: |
Fri, 20 Mar 2020 16:23:38 +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 8d27d1080752..4f2f9eb12b59 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -11871,7 +11871,10 @@ 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;
}
--
2.25.1
- [PULL v4 00/32] Linux user for 5.0 patches, Laurent Vivier, 2020/03/20
- [PULL v4 01/32] linux-user: Add AT_EXECFN auxval, Laurent Vivier, 2020/03/20
- [PULL v4 03/32] linux-user: fix socket() strace, Laurent Vivier, 2020/03/20
- [PULL v4 04/32] linux-user: Update TASK_UNMAPPED_BASE for aarch64, Laurent Vivier, 2020/03/20
- [PULL v4 02/32] linux-user: do prlimit selectively,
Laurent Vivier <=
- [PULL v4 06/32] linux-user/syscall: Add support for clock_gettime64/clock_settime64, Laurent Vivier, 2020/03/20
- [PULL v4 05/32] linux-user: Protect more syscalls, Laurent Vivier, 2020/03/20
- [PULL v4 07/32] linux-user/riscv: Update the syscall_nr's to the 5.5 kernel, Laurent Vivier, 2020/03/20
- [PULL v4 08/32] linux-user: introduce parameters to generate syscall_nr.h, Laurent Vivier, 2020/03/20
- [PULL v4 10/32] linux-user, hppa: add syscall table generation support, Laurent Vivier, 2020/03/20
- [PULL v4 12/32] linux-user, xtensa: add syscall table generation support, Laurent Vivier, 2020/03/20
- [PULL v4 17/32] linux-user, s390x: remove syscall definitions for !TARGET_S390X, Laurent Vivier, 2020/03/20
- [PULL v4 09/32] linux-user, alpha: add syscall table generation support, Laurent Vivier, 2020/03/20
- [PULL v4 13/32] linux-user, sh4: add syscall table generation support, Laurent Vivier, 2020/03/20
- [PULL v4 20/32] linux-user, x86_64, i386: cleanup TARGET_NR_arch_prctl, Laurent Vivier, 2020/03/20