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[PULL v2 07/37] linux-user: do prlimit selectively
From: |
Laurent Vivier |
Subject: |
[PULL v2 07/37] linux-user: do prlimit selectively |
Date: |
Tue, 17 Mar 2020 16:50:46 +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 v2 00/37] Linux user for 5.0 patches, Laurent Vivier, 2020/03/17
- [PULL v2 02/37] linux-user/i386: Split out gen_signal, Laurent Vivier, 2020/03/17
- [PULL v2 01/37] target/i386: Renumber EXCP_SYSCALL, Laurent Vivier, 2020/03/17
- [PULL v2 09/37] linux-user: Update TASK_UNMAPPED_BASE for aarch64, Laurent Vivier, 2020/03/17
- [PULL v2 06/37] linux-user: Add AT_EXECFN auxval, Laurent Vivier, 2020/03/17
- [PULL v2 05/37] linux-user: Flush out implementation of gettimeofday, Laurent Vivier, 2020/03/17
- [PULL v2 08/37] linux-user: fix socket() strace, Laurent Vivier, 2020/03/17
- [PULL v2 11/37] linux-user/syscall: Add support for clock_gettime64/clock_settime64, Laurent Vivier, 2020/03/17
- [PULL v2 04/37] linux-user: Add x86_64 vsyscall page to /proc/self/maps, Laurent Vivier, 2020/03/17
- [PULL v2 07/37] linux-user: do prlimit selectively,
Laurent Vivier <=
- [PULL v2 13/37] linux-user: introduce parameters to generate syscall_nr.h, Laurent Vivier, 2020/03/17
- [PULL v2 10/37] linux-user: Protect more syscalls, Laurent Vivier, 2020/03/17
- [PULL v2 16/37] linux-user, m68k: add syscall table generation support, Laurent Vivier, 2020/03/17
- [PULL v2 03/37] linux-user/i386: Emulate x86_64 vsyscalls, Laurent Vivier, 2020/03/17
- [PULL v2 12/37] linux-user/riscv: Update the syscall_nr's to the 5.5 kernel, Laurent Vivier, 2020/03/17
- [PULL v2 15/37] linux-user, hppa: add syscall table generation support, Laurent Vivier, 2020/03/17
- [PULL v2 14/37] linux-user, alpha: add syscall table generation support, Laurent Vivier, 2020/03/17
- [PULL v2 17/37] linux-user, xtensa: add syscall table generation support, Laurent Vivier, 2020/03/17
- [PULL v2 21/37] linux-user, ppc: add syscall table generation support, Laurent Vivier, 2020/03/17