[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [PULL 06/39] block/nfs: fix potential segfault on early cal
From: |
Stefan Hajnoczi |
Subject: |
[Qemu-devel] [PULL 06/39] block/nfs: fix potential segfault on early callback |
Date: |
Mon, 16 Jun 2014 19:23:30 +0800 |
From: Peter Lieven <address@hidden>
it will happen in the future that the callback of a libnfs call
directly invokes the callback. In this case we end up in a segfault
because the NFSRPC is gone when we the BH is scheduled.
Signed-off-by: Peter Lieven <address@hidden>
Signed-off-by: Stefan Hajnoczi <address@hidden>
---
block/nfs.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/block/nfs.c b/block/nfs.c
index bd9177f..e282f8d 100644
--- a/block/nfs.c
+++ b/block/nfs.c
@@ -95,6 +95,7 @@ static void nfs_co_init_task(NFSClient *client, NFSRPC *task)
static void nfs_co_generic_bh_cb(void *opaque)
{
NFSRPC *task = opaque;
+ task->complete = 1;
qemu_bh_delete(task->bh);
qemu_coroutine_enter(task->co, NULL);
}
@@ -104,7 +105,6 @@ nfs_co_generic_cb(int ret, struct nfs_context *nfs, void
*data,
void *private_data)
{
NFSRPC *task = private_data;
- task->complete = 1;
task->ret = ret;
if (task->ret > 0 && task->iov) {
if (task->ret <= task->iov->size) {
@@ -123,6 +123,8 @@ nfs_co_generic_cb(int ret, struct nfs_context *nfs, void
*data,
task->bh = aio_bh_new(task->client->aio_context,
nfs_co_generic_bh_cb, task);
qemu_bh_schedule(task->bh);
+ } else {
+ task->complete = 1;
}
}
--
1.9.3
- [Qemu-devel] [PULL 00/39] Block patches, Stefan Hajnoczi, 2014/06/16
- [Qemu-devel] [PULL 01/39] configure: Enable dead code (lzo, snappy, quorum), Stefan Hajnoczi, 2014/06/16
- [Qemu-devel] [PULL 02/39] block: Drop superfluous conditionals around g_free(), Stefan Hajnoczi, 2014/06/16
- [Qemu-devel] [PULL 03/39] blockdev: Move 'serial' option to drive_init(), Stefan Hajnoczi, 2014/06/16
- [Qemu-devel] [PULL 04/39] blockdev: Rename drive_init(), drive_uninit() to drive_new(), drive_del(), Stefan Hajnoczi, 2014/06/16
- [Qemu-devel] [PULL 05/39] blockdev: Remove unused DriveInfo reference count, Stefan Hajnoczi, 2014/06/16
- [Qemu-devel] [PULL 07/39] QemuOpts: move find_desc_by_name ahead for later calling, Stefan Hajnoczi, 2014/06/16
- [Qemu-devel] [PULL 06/39] block/nfs: fix potential segfault on early callback,
Stefan Hajnoczi <=
- [Qemu-devel] [PULL 08/39] QemuOpts: repurpose qemu_opts_print to replace print_option_parameters, Stefan Hajnoczi, 2014/06/16
- [Qemu-devel] [PULL 09/39] QemuOpts: add def_value_str to QemuOptDesc, Stefan Hajnoczi, 2014/06/16
- [Qemu-devel] [PULL 10/39] qapi: output def_value_str when query command line options, Stefan Hajnoczi, 2014/06/16
- [Qemu-devel] [PULL 11/39] QemuOpts: change opt->name|str from (const char *) to (char *), Stefan Hajnoczi, 2014/06/16
- [Qemu-devel] [PULL 12/39] QemuOpts: move qemu_opt_del ahead for later calling, Stefan Hajnoczi, 2014/06/16
- [Qemu-devel] [PULL 13/39] QemuOpts: add qemu_opt_get_*_del functions for replace work, Stefan Hajnoczi, 2014/06/16
- [Qemu-devel] [PULL 14/39] QemuOpts: add qemu_opts_print_help to replace print_option_help, Stefan Hajnoczi, 2014/06/16
- [Qemu-devel] [PULL 15/39] QemuOpts: add conversion between QEMUOptionParameter to QemuOpts, Stefan Hajnoczi, 2014/06/16
- [Qemu-devel] [PULL 16/39] QemuOpts: add qemu_opts_append to replace append_option_parameters, Stefan Hajnoczi, 2014/06/16
- [Qemu-devel] [PULL 17/39] QemuOpts: check NULL input for qemu_opts_del, Stefan Hajnoczi, 2014/06/16