Update version for 7.2.2 release

The corruption occurs when a BAT entry aligned to 4096 bytes is changed.

Specifically, the corruption occurs during the creation of the LOG Data
Descriptor. The incorrect behavior involves copying 4088 bytes from the
original 4096 bytes aligned offset to `tmp[8..4096]` and then copying
the new value for the first BAT entry to the beginning `tmp[0..8]`.
This results in all existing BAT entries inside the 4K region being
incorrectly moved by 8 bytes and the last entry being lost.

This bug did not cause noticeable corruption when only sequentially
writing once to an empty dynamic VHDX (e.g.
using `qemu-img convert -O vhdx -o subformat=dynamic ...`), but it
still resulted in invalid values for the (unused) Sector Bitmap BAT
entries.

Importantly, this corruption would only become noticeable after the
corrupted BAT is re-read from the file.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/727
Cc: qemu-stable@nongnu.org
Signed-off-by: Lukas Tschoke <lukts330@gmail.com>
Message-Id: <6cfb6d6b-adc5-7772-c8a5-6bae9a0ad668@gmail.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit 8af037fe4c)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

VERSION

@@ -1 +1 @@
-7.2.1
+7.2.2

block/vhdx-log.c

@@ -980,7 +980,7 @@ static int vhdx_log_write(BlockDriverState *bs, BDRVVHDXState *s,
             sector_write = merged_sector;
         } else if (i == sectors - 1 && trailing_length) {
             /* partial sector at the end of the buffer */
-            ret = bdrv_pread(bs->file, file_offset,
+            ret = bdrv_pread(bs->file, file_offset + trailing_length,
                              VHDX_LOG_SECTOR_SIZE - trailing_length,
                              merged_sector + trailing_length, 0);
             if (ret < 0) {

hw/arm/boot.c

@@ -686,7 +686,10 @@ int arm_load_dtb(hwaddr addr, const struct arm_boot_info *binfo,
     qemu_register_reset_nosnapshotload(qemu_fdt_randomize_seeds,
                                        rom_ptr_for_as(as, addr, size));
 
-    g_free(fdt);
+    if (fdt != ms->fdt) {
+        g_free(ms->fdt);
+        ms->fdt = fdt;
+    }
 
     return size;
 

hw/net/vmxnet3.c

@@ -1441,7 +1441,7 @@ static void vmxnet3_activate_device(VMXNET3State *s)
     vmxnet3_setup_rx_filtering(s);
     /* Cache fields from shared memory */
     s->mtu = VMXNET3_READ_DRV_SHARED32(d, s->drv_shmem, devRead.misc.mtu);
-    assert(VMXNET3_MIN_MTU <= s->mtu && s->mtu < VMXNET3_MAX_MTU);
+    assert(VMXNET3_MIN_MTU <= s->mtu && s->mtu <= VMXNET3_MAX_MTU);
     VMW_CFPRN("MTU is %u", s->mtu);
 
     s->max_rx_frags =

hw/nvme/ctrl.c

@@ -2491,6 +2491,9 @@ static uint16_t nvme_dsm(NvmeCtrl *n, NvmeRequest *req)
         status = nvme_h2c(n, (uint8_t *)iocb->range, sizeof(NvmeDsmRange) * nr,
                           req);
         if (status) {
+            g_free(iocb->range);
+            qemu_aio_unref(iocb);
+
             return status;
         }
 

hw/rdma/vmw/pvrdma_cmd.c

@@ -796,6 +796,12 @@ int pvrdma_exec_cmd(PVRDMADev *dev)
 
     dsr_info = &dev->dsr_info;
 
+    if (!dsr_info->dsr) {
+            /* Buggy or malicious guest driver */
+            rdma_error_report("Exec command without dsr, req or rsp buffers");
+            goto out;
+    }
+
     if (dsr_info->req->hdr.cmd >= sizeof(cmd_handlers) /
                       sizeof(struct cmd_handler)) {
         rdma_error_report("Unsupported command");

include/qemu/osdep.h

@@ -177,7 +177,7 @@ extern "C" {
  * supports QEMU_ERROR, this will be reported at compile time; otherwise
  * this will be reported at link time due to the missing symbol.
  */
-extern G_NORETURN
+G_NORETURN extern
 void QEMU_ERROR("code path is reachable")
     qemu_build_not_reached_always(void);
 #if defined(__OPTIMIZE__) && !defined(__NO_INLINE__)

io/channel-tls.c

@@ -74,6 +74,9 @@ qio_channel_tls_new_server(QIOChannel *master,
     ioc = QIO_CHANNEL_TLS(object_new(TYPE_QIO_CHANNEL_TLS));
 
     ioc->master = master;
+    if (qio_channel_has_feature(master, QIO_CHANNEL_FEATURE_SHUTDOWN)) {
+        qio_channel_set_feature(QIO_CHANNEL(ioc), QIO_CHANNEL_FEATURE_SHUTDOWN);
+    }
     object_ref(OBJECT(master));
 
     ioc->session = qcrypto_tls_session_new(

linux-user/fd-trans.c

@@ -1622,7 +1622,7 @@ TargetFdTrans target_signalfd_trans = {
     .host_to_target_data = host_to_target_data_signalfd,
 };
 
-static abi_long swap_data_eventfd(void *buf, size_t len)
+static abi_long swap_data_u64(void *buf, size_t len)
 {
     uint64_t *counter = buf;
     int i;
@@ -1640,8 +1640,12 @@ static abi_long swap_data_eventfd(void *buf, size_t len)
 }
 
 TargetFdTrans target_eventfd_trans = {
-    .host_to_target_data = swap_data_eventfd,
-    .target_to_host_data = swap_data_eventfd,
+    .host_to_target_data = swap_data_u64,
+    .target_to_host_data = swap_data_u64,
+};
+
+TargetFdTrans target_timerfd_trans = {
+    .host_to_target_data = swap_data_u64,
 };
 
 #if defined(CONFIG_INOTIFY) && (defined(TARGET_NR_inotify_init) || \

linux-user/fd-trans.h

@@ -130,6 +130,7 @@ extern TargetFdTrans target_netlink_route_trans;
 extern TargetFdTrans target_netlink_audit_trans;
 extern TargetFdTrans target_signalfd_trans;
 extern TargetFdTrans target_eventfd_trans;
+extern TargetFdTrans target_timerfd_trans;
 #if (defined(TARGET_NR_inotify_init) && defined(__NR_inotify_init)) || \
     (defined(CONFIG_INOTIFY1) && defined(TARGET_NR_inotify_init1) && \
      defined(__NR_inotify_init1))

linux-user/generic/target_resource.h

@@ -12,8 +12,8 @@ struct target_rlimit {
 };
 
 struct target_rlimit64 {
-    uint64_t rlim_cur;
-    uint64_t rlim_max;
+    abi_ullong rlim_cur;
+    abi_ullong rlim_max;
 };
 
 #define TARGET_RLIM_INFINITY    ((abi_ulong)-1)

linux-user/syscall.c

@@ -1755,6 +1755,11 @@ static inline abi_long target_to_host_sockaddr(int fd, struct sockaddr *addr,
 	lladdr = (struct target_sockaddr_ll *)addr;
 	lladdr->sll_ifindex = tswap32(lladdr->sll_ifindex);
 	lladdr->sll_hatype = tswap16(lladdr->sll_hatype);
+    } else if (sa_family == AF_INET6) {
+        struct sockaddr_in6 *in6addr;
+
+        in6addr = (struct sockaddr_in6 *)addr;
+        in6addr->sin6_scope_id = tswap32(in6addr->sin6_scope_id);
     }
     unlock_user(target_saddr, target_addr, 0);
 
@@ -12883,8 +12888,8 @@ static abi_long do_syscall1(CPUArchState *cpu_env, int num, abi_long arg1,
             if (!lock_user_struct(VERIFY_READ, target_rnew, arg3, 1)) {
                 return -TARGET_EFAULT;
             }
-            rnew.rlim_cur = tswap64(target_rnew->rlim_cur);
-            rnew.rlim_max = tswap64(target_rnew->rlim_max);
+            __get_user(rnew.rlim_cur, &target_rnew->rlim_cur);
+            __get_user(rnew.rlim_max, &target_rnew->rlim_max);
             unlock_user_struct(target_rnew, arg3, 0);
             rnewp = &rnew;
         }
@@ -12894,8 +12899,8 @@ static abi_long do_syscall1(CPUArchState *cpu_env, int num, abi_long arg1,
             if (!lock_user_struct(VERIFY_WRITE, target_rold, arg4, 1)) {
                 return -TARGET_EFAULT;
             }
-            target_rold->rlim_cur = tswap64(rold.rlim_cur);
-            target_rold->rlim_max = tswap64(rold.rlim_max);
+            __put_user(rold.rlim_cur, &target_rold->rlim_cur);
+            __put_user(rold.rlim_max, &target_rold->rlim_max);
             unlock_user_struct(target_rold, arg4, 1);
         }
         return ret;
@@ -13115,8 +13120,12 @@ static abi_long do_syscall1(CPUArchState *cpu_env, int num, abi_long arg1,
 
 #if defined(TARGET_NR_timerfd_create) && defined(CONFIG_TIMERFD)
     case TARGET_NR_timerfd_create:
-        return get_errno(timerfd_create(arg1,
-                          target_to_host_bitmask(arg2, fcntl_flags_tbl)));
+        ret = get_errno(timerfd_create(arg1,
+                        target_to_host_bitmask(arg2, fcntl_flags_tbl)));
+        if (ret >= 0) {
+            fd_trans_register(ret, &target_timerfd_trans);
+        }
+        return ret;
 #endif
 
 #if defined(TARGET_NR_timerfd_gettime) && defined(CONFIG_TIMERFD)

qga/commands.c

@@ -32,9 +32,8 @@
 #define GUEST_FILE_READ_COUNT_MAX (48 * MiB)
 
 /* Note: in some situations, like with the fsfreeze, logging may be
- * temporarilly disabled. if it is necessary that a command be able
- * to log for accounting purposes, check ga_logging_enabled() beforehand,
- * and use the QERR_QGA_LOGGING_DISABLED to generate an error
+ * temporarily disabled. if it is necessary that a command be able
+ * to log for accounting purposes, check ga_logging_enabled() beforehand.
  */
 void slog(const gchar *fmt, ...)
 {

qga/installer/qemu-ga.wxs

@@ -31,6 +31,7 @@
       />
     <Media Id="1" Cabinet="qemu_ga.$(var.QEMU_GA_VERSION).cab" EmbedCab="yes" />
     <Property Id="WHSLogo">1</Property>
+    <Property Id="ARPNOMODIFY" Value="yes" Secure="yes" />
     <MajorUpgrade
       DowngradeErrorMessage="Error: A newer version of QEMU guest agent is already installed."
       />

qga/vss-win32/install.cpp

@@ -518,7 +518,7 @@ namespace _com_util
 /* Stop QGA VSS provider service using Winsvc API  */
 STDAPI StopService(void)
 {
-    HRESULT hr;
+    HRESULT hr = S_OK;
     SC_HANDLE manager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
     SC_HANDLE service = NULL;
 

target/arm/cpu.h

@@ -2407,6 +2407,9 @@ static inline bool arm_is_el3_or_mon(CPUARMState *env)
 /* Return true if the processor is in secure state */
 static inline bool arm_is_secure(CPUARMState *env)
 {
+    if (arm_feature(env, ARM_FEATURE_M)) {
+        return env->v7m.secure;
+    }
     if (arm_is_el3_or_mon(env)) {
         return true;
     }

target/s390x/arch_dump.c

@@ -248,7 +248,7 @@ static int s390x_write_elf64_notes(const char *note_name,
             notep = g_malloc(note_size);
         }
 
-        memset(notep, 0, sizeof(note));
+        memset(notep, 0, note_size);
 
         /* Setup note header data */
         notep->hdr.n_descsz = cpu_to_be32(content_size);

target/s390x/cpu.h

@@ -87,6 +87,7 @@ struct CPUArchState {
     uint64_t cc_vr;
 
     uint64_t ex_value;
+    uint64_t ex_target;
 
     uint64_t __excp_addr;
     uint64_t psa;

target/s390x/s390x-internal.h

@@ -11,6 +11,7 @@
 #define S390X_INTERNAL_H
 
 #include "cpu.h"
+#include "fpu/softfloat.h"
 
 #ifndef CONFIG_USER_ONLY
 typedef struct LowCore {
@@ -299,7 +300,7 @@ uint32_t set_cc_nz_f128(float128 v);
 uint8_t s390_softfloat_exc_to_ieee(unsigned int exc);
 int s390_swap_bfp_rounding_mode(CPUS390XState *env, int m3);
 void s390_restore_bfp_rounding_mode(CPUS390XState *env, int old_mode);
-int float_comp_to_cc(CPUS390XState *env, int float_compare);
+int float_comp_to_cc(CPUS390XState *env, FloatRelation float_compare);
 
 #define DCMASK_ZERO             0x0c00
 #define DCMASK_NORMAL           0x0300

target/s390x/tcg/insn-data.h.inc

@@ -199,8 +199,8 @@
     C(0xe55c, CHSI,    SIL,   GIE, m1_32s, i2, 0, 0, 0, cmps64)
     C(0xe558, CGHSI,   SIL,   GIE, m1_64, i2, 0, 0, 0, cmps64)
 /* COMPARE HALFWORD RELATIVE LONG */
-    C(0xc605, CHRL,    RIL_b, GIE, r1_o, mri2_32s, 0, 0, 0, cmps32)
-    C(0xc604, CGHRL,   RIL_b, GIE, r1_o, mri2_64, 0, 0, 0, cmps64)
+    C(0xc605, CHRL,    RIL_b, GIE, r1_o, mri2_16s, 0, 0, 0, cmps32)
+    C(0xc604, CGHRL,   RIL_b, GIE, r1_o, mri2_16s, 0, 0, 0, cmps64)
 /* COMPARE HIGH */
     C(0xb9cd, CHHR,    RRE,   HW,  r1_sr32, r2_sr32, 0, 0, 0, cmps32)
     C(0xb9dd, CHLR,    RRE,   HW,  r1_sr32, r2_o, 0, 0, 0, cmps32)

target/s390x/tcg/mem_helper.c

@@ -2618,6 +2618,7 @@ void HELPER(ex)(CPUS390XState *env, uint32_t ilen, uint64_t r1, uint64_t addr)
        that ex_value is non-zero, which flags that we are in a state
        that requires such execution.  */
     env->ex_value = insn | ilen;
+    env->ex_target = addr;
 }
 
 uint32_t HELPER(mvcos)(CPUS390XState *env, uint64_t dest, uint64_t src,

target/s390x/tcg/translate.c

@@ -5962,9 +5962,25 @@ static void in2_a2(DisasContext *s, DisasOps *o)
 }
 #define SPEC_in2_a2 0
 
+static TCGv gen_ri2(DisasContext *s)
+{
+    int64_t delta = (int64_t)get_field(s, i2) * 2;
+    TCGv ri2;
+
+    if (unlikely(s->ex_value)) {
+        ri2 = tcg_temp_new_i64();
+        tcg_gen_ld_i64(ri2, cpu_env, offsetof(CPUS390XState, ex_target));
+        tcg_gen_addi_i64(ri2, ri2, delta);
+    } else {
+        ri2 = tcg_constant_i64(s->base.pc_next + delta);
+    }
+
+    return ri2;
+}
+
 static void in2_ri2(DisasContext *s, DisasOps *o)
 {
-    o->in2 = tcg_const_i64(s->base.pc_next + (int64_t)get_field(s, i2) * 2);
+    o->in2 = gen_ri2(s);
 }
 #define SPEC_in2_ri2 0
 
@@ -6050,31 +6066,38 @@ static void in2_m2_64a(DisasContext *s, DisasOps *o)
 #define SPEC_in2_m2_64a 0
 #endif
 
+static void in2_mri2_16s(DisasContext *s, DisasOps *o)
+{
+    o->in2 = tcg_temp_new_i64();
+    tcg_gen_qemu_ld16s(o->in2, gen_ri2(s), get_mem_index(s));
+}
+#define SPEC_in2_mri2_16s 0
+
 static void in2_mri2_16u(DisasContext *s, DisasOps *o)
 {
-    in2_ri2(s, o);
-    tcg_gen_qemu_ld16u(o->in2, o->in2, get_mem_index(s));
+    o->in2 = tcg_temp_new_i64();
+    tcg_gen_qemu_ld16u(o->in2, gen_ri2(s), get_mem_index(s));
 }
 #define SPEC_in2_mri2_16u 0
 
 static void in2_mri2_32s(DisasContext *s, DisasOps *o)
 {
-    in2_ri2(s, o);
-    tcg_gen_qemu_ld32s(o->in2, o->in2, get_mem_index(s));
+    o->in2 = tcg_temp_new_i64();
+    tcg_gen_qemu_ld32s(o->in2, gen_ri2(s), get_mem_index(s));
 }
 #define SPEC_in2_mri2_32s 0
 
 static void in2_mri2_32u(DisasContext *s, DisasOps *o)
 {
-    in2_ri2(s, o);
-    tcg_gen_qemu_ld32u(o->in2, o->in2, get_mem_index(s));
+    o->in2 = tcg_temp_new_i64();
+    tcg_gen_qemu_ld32u(o->in2, gen_ri2(s), get_mem_index(s));
 }
 #define SPEC_in2_mri2_32u 0
 
 static void in2_mri2_64(DisasContext *s, DisasOps *o)
 {
-    in2_ri2(s, o);
-    tcg_gen_qemu_ld64(o->in2, o->in2, get_mem_index(s));
+    o->in2 = tcg_temp_new_i64();
+    tcg_gen_qemu_ld64(o->in2, gen_ri2(s), get_mem_index(s));
 }
 #define SPEC_in2_mri2_64 0
 

ui/gtk.c

@@ -1783,7 +1783,9 @@ static void gd_vc_chr_accept_input(Chardev *chr)
     VCChardev *vcd = VC_CHARDEV(chr);
     VirtualConsole *vc = vcd->console;
 
-    gd_vc_send_chars(vc);
+    if (vc) {
+        gd_vc_send_chars(vc);
+    }
 }
 
 static void gd_vc_chr_set_echo(Chardev *chr, bool echo)

util/fdmon-epoll.c

@@ -127,6 +127,8 @@ static bool fdmon_epoll_try_enable(AioContext *ctx)
 
 bool fdmon_epoll_try_upgrade(AioContext *ctx, unsigned npfd)
 {
+    bool ok;
+
     if (ctx->epollfd < 0) {
         return false;
     }
@@ -136,14 +138,23 @@ bool fdmon_epoll_try_upgrade(AioContext *ctx, unsigned npfd)
         return false;
     }
 
-    if (npfd >= EPOLL_ENABLE_THRESHOLD) {
-        if (fdmon_epoll_try_enable(ctx)) {
-            return true;
-        } else {
-            fdmon_epoll_disable(ctx);
-        }
+    if (npfd < EPOLL_ENABLE_THRESHOLD) {
+        return false;
     }
-    return false;
+
+    /* The list must not change while we add fds to epoll */
+    if (!qemu_lockcnt_dec_if_lock(&ctx->list_lock)) {
+        return false;
+    }
+
+    ok = fdmon_epoll_try_enable(ctx);
+
+    qemu_lockcnt_inc_and_unlock(&ctx->list_lock);
+
+    if (!ok) {
+        fdmon_epoll_disable(ctx);
+    }
+    return ok;
 }
 
 void fdmon_epoll_setup(AioContext *ctx)