diff options
Diffstat (limited to 'gnu/packages/patches/strace-kernel-4.16.patch')
| -rw-r--r-- | gnu/packages/patches/strace-kernel-4.16.patch | 92 |
1 files changed, 0 insertions, 92 deletions
diff --git a/gnu/packages/patches/strace-kernel-4.16.patch b/gnu/packages/patches/strace-kernel-4.16.patch deleted file mode 100644 index e86d3be439..0000000000 --- a/gnu/packages/patches/strace-kernel-4.16.patch +++ /dev/null @@ -1,92 +0,0 @@ -Fix test failure when using Linux-Libre >= 4.16. - -Taken from upstream: -https://github.com/strace/strace/commit/bcff87c31c0f27c678a43d6b7f67dab363a974fa - -From bcff87c31c0f27c678a43d6b7f67dab363a974fa Mon Sep 17 00:00:00 2001 -From: Masatake YAMATO <yamato@redhat.com> -Date: Wed, 2 May 2018 17:11:07 +0900 -Subject: [PATCH] tests/ioctl_kvm_run.c: handle cpuid at the end of vcpu dentry - -Since Linux 4.16, kernel appends the cpuid as suffix to the entry -for a kvm vcpu in /proc/$pid/fd like: - - anon_inode:kvm-vcpu:0 - -That was - - anon_inode:kvm-vcpu - -This kernel change causes the test case failure on newer kernels. -Update the test to deal with the new name as well as the old one. - -* tests/ioctl_kvm_run.c: Include unistd.h for using readlink(2). -(vcpu_dev_should_have_cpuid): New function for detecting whether -a proc entry for given fd has the cpuid suffix or not. -(main): Trim vcpu_dev to remove the cpuid suffix if needed. -(vcpu_dev): Remove const modifier. ---- - tests/ioctl_kvm_run.c | 29 ++++++++++++++++++++++++++++- - 1 file changed, 28 insertions(+), 1 deletion(-) - -diff --git a/tests/ioctl_kvm_run.c b/tests/ioctl_kvm_run.c -index 179461430..e1bef5796 100644 ---- a/tests/ioctl_kvm_run.c -+++ b/tests/ioctl_kvm_run.c -@@ -40,6 +40,7 @@ - # include <string.h> - # include <sys/ioctl.h> - # include <sys/mman.h> -+# include <unistd.h> - # include <linux/kvm.h> - - static int -@@ -56,7 +57,7 @@ kvm_ioctl(int fd, unsigned long cmd, const char *cmd_str, void *arg) - - static const char dev[] = "/dev/kvm"; - static const char vm_dev[] = "anon_inode:kvm-vm"; --static const char vcpu_dev[] = "anon_inode:kvm-vcpu"; -+static char vcpu_dev[] = "anon_inode:kvm-vcpu:0"; - static size_t page_size; - - extern const char code[]; -@@ -165,6 +166,23 @@ run_kvm(const int vcpu_fd, struct kvm_run *const run, const size_t mmap_size, - } - } - -+static int -+vcpu_dev_should_have_cpuid(int fd) -+{ -+ int r = 0; -+ char *filename = NULL; -+ char buf[sizeof(vcpu_dev)]; -+ -+ if (asprintf(&filename, "/proc/%d/fd/%d", getpid(), fd) < 0) -+ error_msg_and_fail("asprintf"); -+ -+ if (readlink(filename, buf, sizeof(buf)) == sizeof(buf) - 1 -+ && (memcmp(buf, vcpu_dev, sizeof(buf) - 1) == 0)) -+ r = 1; -+ free(filename); -+ return r; -+} -+ - int - main(void) - { -@@ -208,6 +226,15 @@ main(void) - (unsigned long) page_size, (unsigned long) page_size, mem); - - int vcpu_fd = KVM_IOCTL(vm_fd, KVM_CREATE_VCPU, NULL); -+ if (!vcpu_dev_should_have_cpuid(vcpu_fd)) -+ /* -+ * This is an older kernel that doesn't place a cpuid -+ * at the end of the dentry associated with vcpu_fd. -+ * Trim the cpuid part of vcpu_dev like: -+ * "anon_inode:kvm-vcpu:0" -> "anon_inode:kvm-vcpu" -+ */ -+ vcpu_dev[strlen (vcpu_dev) - 2] = '\0'; -+ - printf("ioctl(%d<%s>, KVM_CREATE_VCPU, 0) = %d<%s>\n", - vm_fd, vm_dev, vcpu_fd, vcpu_dev); - |