[PULL 0/6] linux-user late fixes

[PULL 0/6] linux-user late fixes

[Richard Henderson]

The following changes since commit 32e07fddc6d989dc5fdff4f9c9e47cb1f3911904:

  Merge tag 'pull-lu-20230808' of https://gitlab.com/rth7680/qemu into staging (2023-08-08 14:10:07 -0700)

are available in the Git repository at:

  https://gitlab.com/rth7680/qemu.git tags/pull-lu-20230809

for you to fetch changes up to b8002058c45a50d893c51cf62ec96c70128fc1eb:

  linux-user: Fix openat() emulation to correctly detect accesses to /proc (2023-08-09 09:31:30 -0700)

----------------------------------------------------------------
linux-user: Fixes for mmap syscall emulation
linux-user: Correctly detect access to /proc in openat
util/interval-tree: Check root for null in interval_tree_iter_first
tests/tcg: Disable filename test for info proc mappings

----------------------------------------------------------------
Helge Deller (2):
      util/interval-tree: Check root for null in interval_tree_iter_first
      linux-user: Fix openat() emulation to correctly detect accesses to /proc

Richard Henderson (4):
      qemu/osdep: Remove fallback for MAP_FIXED_NOREPLACE
      linux-user: Split out do_mmap
      linux-user: Use ARRAY_SIZE with bitmask_transtbl
      tests/tcg: Disable filename test for info proc mappings

 bsd-user/syscall_defs.h                           |   2 +
 include/exec/user/thunk.h                         |  15 ++-
 include/qemu/osdep.h                              |   3 -
 linux-user/syscall.c                              | 109 +++++++++++++++++-----
 linux-user/thunk.c                                |  24 ++---
 util/interval-tree.c                              |   2 +-
 tests/tcg/multiarch/gdbstub/test-proc-mappings.py |   3 +-
 7 files changed, 113 insertions(+), 45 deletions(-)

[PULL 1/6] qemu/osdep: Remove fallback for MAP_FIXED_NOREPLACE

[Richard Henderson]

In order for our emulation of MAP_FIXED_NOREPLACE to succeed within
linux-user target_mmap, we require a non-zero value.  This does not
require host kernel support, merely the bit being defined.

MAP_FIXED_NOREPLACE was added with glibc 2.28.  From repology.org:

                  Fedora 36: 2.35
          CentOS 8 (RHEL-8): 2.28
                  Debian 11: 2.31
         OpenSUSE Leap 15.4: 2.31
           Ubuntu LTS 20.04: 2.31

Reported-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230808164418.69989-1-richard.henderson@linaro.org>
---
 include/qemu/osdep.h | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h
index cc61b00ba9..21ef8f1699 100644
--- a/include/qemu/osdep.h
+++ b/include/qemu/osdep.h
@@ -289,9 +289,6 @@ void QEMU_ERROR("code path is reachable")
 #ifndef MAP_ANONYMOUS
 #define MAP_ANONYMOUS MAP_ANON
 #endif
-#ifndef MAP_FIXED_NOREPLACE
-#define MAP_FIXED_NOREPLACE 0
-#endif
 #ifndef MAP_NORESERVE
 #define MAP_NORESERVE 0
 #endif
-- 
2.34.1

[PULL 2/6] linux-user: Split out do_mmap

[Richard Henderson]

New function that rejects unsupported map types and flags.
In 4b840f96 we should not have accepted MAP_SHARED_VALIDATE
without actually validating the rest of the flags.

Fixes: 4b840f96 ("linux-user: Populate more bits in mmap_flags_tbl")
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 linux-user/syscall.c | 90 +++++++++++++++++++++++++++++++++++---------
 1 file changed, 73 insertions(+), 17 deletions(-)

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index a15bce2be2..34deff0723 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -5985,10 +5985,6 @@ static const StructEntry struct_termios_def = {
 #endif
 
 static const bitmask_transtbl mmap_flags_tbl[] = {
-    { TARGET_MAP_TYPE, TARGET_MAP_SHARED, MAP_TYPE, MAP_SHARED },
-    { TARGET_MAP_TYPE, TARGET_MAP_PRIVATE, MAP_TYPE, MAP_PRIVATE },
-    { TARGET_MAP_TYPE, TARGET_MAP_SHARED_VALIDATE,
-      MAP_TYPE, MAP_SHARED_VALIDATE },
     { TARGET_MAP_FIXED, TARGET_MAP_FIXED, MAP_FIXED, MAP_FIXED },
     { TARGET_MAP_ANONYMOUS, TARGET_MAP_ANONYMOUS,
       MAP_ANONYMOUS, MAP_ANONYMOUS },
@@ -6006,7 +6002,6 @@ static const bitmask_transtbl mmap_flags_tbl[] = {
        Recognize it for the target insofar as we do not want to pass
        it through to the host.  */
     { TARGET_MAP_STACK, TARGET_MAP_STACK, 0, 0 },
-    { TARGET_MAP_SYNC, TARGET_MAP_SYNC, MAP_SYNC, MAP_SYNC },
     { TARGET_MAP_NONBLOCK, TARGET_MAP_NONBLOCK, MAP_NONBLOCK, MAP_NONBLOCK },
     { TARGET_MAP_POPULATE, TARGET_MAP_POPULATE, MAP_POPULATE, MAP_POPULATE },
     { TARGET_MAP_FIXED_NOREPLACE, TARGET_MAP_FIXED_NOREPLACE,
@@ -6016,6 +6011,75 @@ static const bitmask_transtbl mmap_flags_tbl[] = {
     { 0, 0, 0, 0 }
 };
 
+/*
+ * Arrange for legacy / undefined architecture specific flags to be
+ * ignored by mmap handling code.
+ */
+#ifndef TARGET_MAP_32BIT
+#define TARGET_MAP_32BIT 0
+#endif
+#ifndef TARGET_MAP_HUGE_2MB
+#define TARGET_MAP_HUGE_2MB 0
+#endif
+#ifndef TARGET_MAP_HUGE_1GB
+#define TARGET_MAP_HUGE_1GB 0
+#endif
+
+static abi_long do_mmap(abi_ulong addr, abi_ulong len, int prot,
+                        int target_flags, int fd, off_t offset)
+{
+    /*
+     * The historical set of flags that all mmap types implicitly support.
+     */
+    enum {
+        TARGET_LEGACY_MAP_MASK = TARGET_MAP_SHARED
+                               | TARGET_MAP_PRIVATE
+                               | TARGET_MAP_FIXED
+                               | TARGET_MAP_ANONYMOUS
+                               | TARGET_MAP_DENYWRITE
+                               | TARGET_MAP_EXECUTABLE
+                               | TARGET_MAP_UNINITIALIZED
+                               | TARGET_MAP_GROWSDOWN
+                               | TARGET_MAP_LOCKED
+                               | TARGET_MAP_NORESERVE
+                               | TARGET_MAP_POPULATE
+                               | TARGET_MAP_NONBLOCK
+                               | TARGET_MAP_STACK
+                               | TARGET_MAP_HUGETLB
+                               | TARGET_MAP_32BIT
+                               | TARGET_MAP_HUGE_2MB
+                               | TARGET_MAP_HUGE_1GB
+    };
+    int host_flags;
+
+    switch (target_flags & TARGET_MAP_TYPE) {
+    case TARGET_MAP_PRIVATE:
+        host_flags = MAP_PRIVATE;
+        break;
+    case TARGET_MAP_SHARED:
+        host_flags = MAP_SHARED;
+        break;
+    case TARGET_MAP_SHARED_VALIDATE:
+        /*
+         * MAP_SYNC is only supported for MAP_SHARED_VALIDATE, and is
+         * therefore omitted from mmap_flags_tbl and TARGET_LEGACY_MAP_MASK.
+         */
+        if (target_flags & ~(TARGET_LEGACY_MAP_MASK | TARGET_MAP_SYNC)) {
+            return -TARGET_EOPNOTSUPP;
+        }
+        host_flags = MAP_SHARED_VALIDATE;
+        if (target_flags & TARGET_MAP_SYNC) {
+            host_flags |= MAP_SYNC;
+        }
+        break;
+    default:
+        return -TARGET_EINVAL;
+    }
+    host_flags |= target_to_host_bitmask(target_flags, mmap_flags_tbl);
+
+    return get_errno(target_mmap(addr, len, prot, host_flags, fd, offset));
+}
+
 /*
  * NOTE: TARGET_ABI32 is defined for TARGET_I386 (but not for TARGET_X86_64)
  *       TARGET_I386 is defined if TARGET_X86_64 is defined
@@ -10536,28 +10600,20 @@ static abi_long do_syscall1(CPUArchState *cpu_env, int num, abi_long arg1,
             v5 = tswapal(v[4]);
             v6 = tswapal(v[5]);
             unlock_user(v, arg1, 0);
-            ret = get_errno(target_mmap(v1, v2, v3,
-                                        target_to_host_bitmask(v4, mmap_flags_tbl),
-                                        v5, v6));
+            return do_mmap(v1, v2, v3, v4, v5, v6);
         }
 #else
         /* mmap pointers are always untagged */
-        ret = get_errno(target_mmap(arg1, arg2, arg3,
-                                    target_to_host_bitmask(arg4, mmap_flags_tbl),
-                                    arg5,
-                                    arg6));
+        return do_mmap(arg1, arg2, arg3, arg4, arg5, arg6);
 #endif
-        return ret;
 #endif
 #ifdef TARGET_NR_mmap2
     case TARGET_NR_mmap2:
 #ifndef MMAP_SHIFT
 #define MMAP_SHIFT 12
 #endif
-        ret = target_mmap(arg1, arg2, arg3,
-                          target_to_host_bitmask(arg4, mmap_flags_tbl),
-                          arg5, (off_t)(abi_ulong)arg6 << MMAP_SHIFT);
-        return get_errno(ret);
+        return do_mmap(arg1, arg2, arg3, arg4, arg5,
+                       (off_t)(abi_ulong)arg6 << MMAP_SHIFT);
 #endif
     case TARGET_NR_munmap:
         arg1 = cpu_untagged_addr(cpu, arg1);
-- 
2.34.1

[PULL 3/6] linux-user: Use ARRAY_SIZE with bitmask_transtbl

[Richard Henderson]

Rather than using a zero tuple to end the table, use a macro
to apply ARRAY_SIZE and pass that on to the convert functions.

This fixes two bugs in which the conversion functions required
that both the target and host masks be non-zero in order to
continue, rather than require both target and host masks be
zero in order to terminate.

This affected mmap_flags_tbl when the host does not support
all of the flags we wish to convert (e.g. MAP_UNINITIALIZED).
Mapping these flags to zero is good enough, and matches how
the kernel ignores bits that are unknown.

Fixes: 4b840f96 ("linux-user: Populate more bits in mmap_flags_tbl")
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 bsd-user/syscall_defs.h   |  2 ++
 include/exec/user/thunk.h | 15 +++++++++++----
 linux-user/syscall.c      |  6 ------
 linux-user/thunk.c        | 24 ++++++++++++------------
 4 files changed, 25 insertions(+), 22 deletions(-)

diff --git a/bsd-user/syscall_defs.h b/bsd-user/syscall_defs.h
index b6d113d24a..aedfbf2d7d 100644
--- a/bsd-user/syscall_defs.h
+++ b/bsd-user/syscall_defs.h
@@ -227,7 +227,9 @@ type safe_##name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, \
 }
 
 /* So far all target and host bitmasks are the same */
+#undef  target_to_host_bitmask
 #define target_to_host_bitmask(x, tbl) (x)
+#undef  host_to_target_bitmask
 #define host_to_target_bitmask(x, tbl) (x)
 
 #endif /* SYSCALL_DEFS_H */
diff --git a/include/exec/user/thunk.h b/include/exec/user/thunk.h
index 300a840d58..6eedef48d8 100644
--- a/include/exec/user/thunk.h
+++ b/include/exec/user/thunk.h
@@ -193,10 +193,17 @@ static inline int thunk_type_align(const argtype *type_ptr, int is_host)
     }
 }
 
-unsigned int target_to_host_bitmask(unsigned int target_mask,
-                                    const bitmask_transtbl * trans_tbl);
-unsigned int host_to_target_bitmask(unsigned int host_mask,
-                                    const bitmask_transtbl * trans_tbl);
+unsigned int target_to_host_bitmask_len(unsigned int target_mask,
+                                        const bitmask_transtbl *trans_tbl,
+                                        size_t trans_len);
+unsigned int host_to_target_bitmask_len(unsigned int host_mask,
+                                        const bitmask_transtbl * trans_tbl,
+                                        size_t trans_len);
+
+#define target_to_host_bitmask(M, T) \
+    target_to_host_bitmask_len(M, T, ARRAY_SIZE(T))
+#define host_to_target_bitmask(M, T) \
+    host_to_target_bitmask_len(M, T, ARRAY_SIZE(T))
 
 void thunk_init(unsigned int max_structs);
 
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 34deff0723..12ebc70df5 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -455,7 +455,6 @@ static const bitmask_transtbl fcntl_flags_tbl[] = {
 #if TARGET_O_LARGEFILE != 0 || O_LARGEFILE != 0
   { TARGET_O_LARGEFILE, TARGET_O_LARGEFILE, O_LARGEFILE, O_LARGEFILE, },
 #endif
-  { 0, 0, 0, 0 }
 };
 
 _syscall2(int, sys_getcwd1, char *, buf, size_t, size)
@@ -5813,7 +5812,6 @@ static const bitmask_transtbl iflag_tbl[] = {
         { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF },
         { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL },
         { TARGET_IUTF8, TARGET_IUTF8, IUTF8, IUTF8},
-        { 0, 0, 0, 0 }
 };
 
 static const bitmask_transtbl oflag_tbl[] = {
@@ -5841,7 +5839,6 @@ static const bitmask_transtbl oflag_tbl[] = {
 	{ TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 },
 	{ TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 },
 	{ TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 },
-	{ 0, 0, 0, 0 }
 };
 
 static const bitmask_transtbl cflag_tbl[] = {
@@ -5876,7 +5873,6 @@ static const bitmask_transtbl cflag_tbl[] = {
 	{ TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL },
 	{ TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL },
 	{ TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS },
-	{ 0, 0, 0, 0 }
 };
 
 static const bitmask_transtbl lflag_tbl[] = {
@@ -5896,7 +5892,6 @@ static const bitmask_transtbl lflag_tbl[] = {
   { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN },
   { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN },
   { TARGET_EXTPROC, TARGET_EXTPROC, EXTPROC, EXTPROC},
-  { 0, 0, 0, 0 }
 };
 
 static void target_to_host_termios (void *dst, const void *src)
@@ -6008,7 +6003,6 @@ static const bitmask_transtbl mmap_flags_tbl[] = {
       MAP_FIXED_NOREPLACE, MAP_FIXED_NOREPLACE },
     { TARGET_MAP_UNINITIALIZED, TARGET_MAP_UNINITIALIZED,
       MAP_UNINITIALIZED, MAP_UNINITIALIZED },
-    { 0, 0, 0, 0 }
 };
 
 /*
diff --git a/linux-user/thunk.c b/linux-user/thunk.c
index dac4bf11c6..071aad4b5f 100644
--- a/linux-user/thunk.c
+++ b/linux-user/thunk.c
@@ -436,29 +436,29 @@ const argtype *thunk_print(void *arg, const argtype *type_ptr)
 /* Utility function: Table-driven functions to translate bitmasks
  * between host and target formats
  */
-unsigned int target_to_host_bitmask(unsigned int target_mask,
-                                    const bitmask_transtbl * trans_tbl)
+unsigned int target_to_host_bitmask_len(unsigned int target_mask,
+                                        const bitmask_transtbl *tbl,
+                                        size_t len)
 {
-    const bitmask_transtbl *btp;
     unsigned int host_mask = 0;
 
-    for (btp = trans_tbl; btp->target_mask && btp->host_mask; btp++) {
-        if ((target_mask & btp->target_mask) == btp->target_bits) {
-            host_mask |= btp->host_bits;
+    for (size_t i = 0; i < len; ++i) {
+        if ((target_mask & tbl[i].target_mask) == tbl[i].target_bits) {
+            host_mask |= tbl[i].host_bits;
         }
     }
     return host_mask;
 }
 
-unsigned int host_to_target_bitmask(unsigned int host_mask,
-                                    const bitmask_transtbl * trans_tbl)
+unsigned int host_to_target_bitmask_len(unsigned int host_mask,
+                                        const bitmask_transtbl *tbl,
+                                        size_t len)
 {
-    const bitmask_transtbl *btp;
     unsigned int target_mask = 0;
 
-    for (btp = trans_tbl; btp->target_mask && btp->host_mask; btp++) {
-        if ((host_mask & btp->host_mask) == btp->host_bits) {
-            target_mask |= btp->target_bits;
+    for (size_t i = 0; i < len; ++i) {
+        if ((host_mask & tbl[i].host_mask) == tbl[i].host_bits) {
+            target_mask |= tbl[i].target_bits;
         }
     }
     return target_mask;
-- 
2.34.1

[PULL 4/6] tests/tcg: Disable filename test for info proc mappings

[Richard Henderson]

This test fails when host page size != guest page size,
because qemu may not be able to directly map the file.

Fixes: a6341482695 ("tests/tcg: Add a test for info proc mappings")
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 tests/tcg/multiarch/gdbstub/test-proc-mappings.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tests/tcg/multiarch/gdbstub/test-proc-mappings.py b/tests/tcg/multiarch/gdbstub/test-proc-mappings.py
index 7b596ac21b..5e3e5a2fb7 100644
--- a/tests/tcg/multiarch/gdbstub/test-proc-mappings.py
+++ b/tests/tcg/multiarch/gdbstub/test-proc-mappings.py
@@ -33,7 +33,8 @@ def run_test():
             return
         raise
     report(isinstance(mappings, str), "Fetched the mappings from the inferior")
-    report("/sha1" in mappings, "Found the test binary name in the mappings")
+    # Broken with host page size > guest page size
+    # report("/sha1" in mappings, "Found the test binary name in the mappings")
 
 
 def main():
-- 
2.34.1

[PULL 5/6] util/interval-tree: Check root for null in interval_tree_iter_first

[Richard Henderson]

From: Helge Deller <deller@gmx.de>

Fix a crash in qemu-user when running

    cat /proc/self/maps

in a chroot, where /proc isn't mounted.

The problem was introduced by commit 3ce3dd8ca965 ("util/selfmap:
Rewrite using qemu/interval-tree.h") where in open_self_maps_1() the
function read_self_maps() is called and which returns NULL if it can't
read the hosts /proc/self/maps file. Afterwards that NULL is fed into
interval_tree_iter_first() which doesn't check if the root node is NULL.

Fix it by adding a check if root is NULL and return NULL in that case.

Signed-off-by: Helge Deller <deller@gmx.de>
Fixes: 3ce3dd8ca965 ("util/selfmap: Rewrite using qemu/interval-tree.h")
Message-Id: <ZNOsq6Z7t/eyIG/9@p100>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 util/interval-tree.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/util/interval-tree.c b/util/interval-tree.c
index f2866aa7d3..53465182e6 100644
--- a/util/interval-tree.c
+++ b/util/interval-tree.c
@@ -797,7 +797,7 @@ IntervalTreeNode *interval_tree_iter_first(IntervalTreeRoot *root,
 {
     IntervalTreeNode *node, *leftmost;
 
-    if (!root->rb_root.rb_node) {
+    if (!root || !root->rb_root.rb_node) {
         return NULL;
     }
 
-- 
2.34.1

[PULL 6/6] linux-user: Fix openat() emulation to correctly detect accesses to /proc

[Richard Henderson]

From: Helge Deller <deller@gmx.de>

In qemu we catch accesses to files like /proc/cpuinfo or /proc/net/route
and return to the guest contents which would be visible on a real system
(instead what the host would show).

This patch fixes a bug, where for example the accesses
    cat /proc////cpuinfo
or
    cd /proc && cat cpuinfo
will not be recognized by qemu and where qemu will wrongly show
the contents of the host's /proc/cpuinfo file.

Signed-off-by: Helge Deller <deller@gmx.de>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20230803214450.647040-2-deller@gmx.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 linux-user/syscall.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 12ebc70df5..9353268cc1 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -8557,9 +8557,12 @@ static int open_hardware(CPUArchState *cpu_env, int fd)
 }
 #endif
 
-int do_guest_openat(CPUArchState *cpu_env, int dirfd, const char *pathname,
+
+int do_guest_openat(CPUArchState *cpu_env, int dirfd, const char *fname,
                     int flags, mode_t mode, bool safe)
 {
+    g_autofree char *proc_name = NULL;
+    const char *pathname;
     struct fake_open {
         const char *filename;
         int (*fill)(CPUArchState *cpu_env, int fd);
@@ -8585,6 +8588,14 @@ int do_guest_openat(CPUArchState *cpu_env, int dirfd, const char *pathname,
         { NULL, NULL, NULL }
     };
 
+    /* if this is a file from /proc/ filesystem, expand full name */
+    proc_name = realpath(fname, NULL);
+    if (proc_name && strncmp(proc_name, "/proc/", 6) == 0) {
+        pathname = proc_name;
+    } else {
+        pathname = fname;
+    }
+
     if (is_proc_myself(pathname, "exe")) {
         if (safe) {
             return safe_openat(dirfd, exec_path, flags, mode);
-- 
2.34.1

Re: [PULL 0/6] linux-user late fixes

[Richard Henderson]

On 8/9/23 10:50, Richard Henderson wrote:
> The following changes since commit 32e07fddc6d989dc5fdff4f9c9e47cb1f3911904:
> 
>    Merge tag 'pull-lu-20230808' ofhttps://gitlab.com/rth7680/qemu  into staging (2023-08-08 14:10:07 -0700)
> 
> are available in the Git repository at:
> 
>    https://gitlab.com/rth7680/qemu.git  tags/pull-lu-20230809
> 
> for you to fetch changes up to b8002058c45a50d893c51cf62ec96c70128fc1eb:
> 
>    linux-user: Fix openat() emulation to correctly detect accesses to /proc (2023-08-09 09:31:30 -0700)
> 
> ----------------------------------------------------------------
> linux-user: Fixes for mmap syscall emulation
> linux-user: Correctly detect access to /proc in openat
> util/interval-tree: Check root for null in interval_tree_iter_first
> tests/tcg: Disable filename test for info proc mappings

Applied, thanks.  Please update https://wiki.qemu.org/ChangeLog/8.1 as appropriate.


r~