| /openbmc/qemu/block/ |
| H A D | vvfat.c | diff fb62b5889695825ea22f29d4eadb9ac1b8935a71 Mon May 24 05:12:56 CDT 2021 Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> block/vvfat: child_vvfat_qcow: add .get_parent_aio_context, fix crash
Commit 3ca1f3225727419ba573673b744edac10904276f
"block: BdrvChildClass: add .get_parent_aio_context handler" introduced
new handler and commit 228ca37e12f97788e05bd0c92f89b3e5e4019607
"block: drop ctx argument from bdrv_root_attach_child" made a generic
use of it. But 3ca1f3225727419ba573673b744edac10904276f didn't update
child_vvfat_qcow. Fix that.
Before that fix the command
./build/qemu-system-x86_64 -usb -device usb-storage,drive=fat16 \
-drive file=fat:rw:fat-type=16:"<path of a host folder>",id=fat16,format=raw,if=none
crashes:
1 bdrv_child_get_parent_aio_context (c=0x559d62426d20)
at ../block.c:1440
2 bdrv_attach_child_common
(child_bs=0x559d62468190, child_name=0x559d606f9e3d "write-target",
child_class=0x559d60c58d20 <child_vvfat_qcow>, child_role=3,
perm=3, shared_perm=4, opaque=0x559d62445690,
child=0x7ffc74c2acc8, tran=0x559d6246ddd0, errp=0x7ffc74c2ae60)
at ../block.c:2795
3 bdrv_attach_child_noperm
(parent_bs=0x559d62445690, child_bs=0x559d62468190,
child_name=0x559d606f9e3d "write-target",
child_class=0x559d60c58d20 <child_vvfat_qcow>, child_role=3,
child=0x7ffc74c2acc8, tran=0x559d6246ddd0, errp=0x7ffc74c2ae60) at
../block.c:2855
4 bdrv_attach_child
(parent_bs=0x559d62445690, child_bs=0x559d62468190,
child_name=0x559d606f9e3d "write-target",
child_class=0x559d60c58d20 <child_vvfat_qcow>, child_role=3,
errp=0x7ffc74c2ae60) at ../block.c:2953
5 bdrv_open_child
(filename=0x559d62464b80 "/var/tmp/vl.h3TIS4",
options=0x559d6246ec20, bdref_key=0x559d606f9e3d "write-target",
parent=0x559d62445690, child_class=0x559d60c58d20
<child_vvfat_qcow>, child_role=3, allow_none=false,
errp=0x7ffc74c2ae60) at ../block.c:3351
6 enable_write_target (bs=0x559d62445690, errp=0x7ffc74c2ae60) at
../block/vvfat.c:3176
7 vvfat_open (bs=0x559d62445690, options=0x559d6244adb0, flags=155650,
errp=0x7ffc74c2ae60) at ../block/vvfat.c:1236
8 bdrv_open_driver (bs=0x559d62445690, drv=0x559d60d4f7e0
<bdrv_vvfat>, node_name=0x0,
options=0x559d6244adb0, open_flags=155650,
errp=0x7ffc74c2af70) at ../block.c:1557
9 bdrv_open_common (bs=0x559d62445690, file=0x0,
options=0x559d6244adb0, errp=0x7ffc74c2af70) at
...
(gdb) fr 1
#1 0x0000559d603ea3bf in bdrv_child_get_parent_aio_context
(c=0x559d62426d20) at ../block.c:1440
1440 return c->klass->get_parent_aio_context(c);
(gdb) p c->klass
$1 = (const BdrvChildClass *) 0x559d60c58d20 <child_vvfat_qcow>
(gdb) p c->klass->get_parent_aio_context
$2 = (AioContext *(*)(BdrvChild *)) 0x0
Fixes: 3ca1f3225727419ba573673b744edac10904276f
Fixes: 228ca37e12f97788e05bd0c92f89b3e5e4019607
Reported-by: John Arbuckle <programmingkidx@gmail.com>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210524101257.119377-2-vsementsov@virtuozzo.com>
Tested-by: John Arbuckle <programmingkidx@gmail.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
diff fb62b5889695825ea22f29d4eadb9ac1b8935a71 Mon May 24 05:12:56 CDT 2021 Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> block/vvfat: child_vvfat_qcow: add .get_parent_aio_context, fix crash
Commit 3ca1f3225727419ba573673b744edac10904276f
"block: BdrvChildClass: add .get_parent_aio_context handler" introduced
new handler and commit 228ca37e12f97788e05bd0c92f89b3e5e4019607
"block: drop ctx argument from bdrv_root_attach_child" made a generic
use of it. But 3ca1f3225727419ba573673b744edac10904276f didn't update
child_vvfat_qcow. Fix that.
Before that fix the command
./build/qemu-system-x86_64 -usb -device usb-storage,drive=fat16 \
-drive file=fat:rw:fat-type=16:"<path of a host folder>",id=fat16,format=raw,if=none
crashes:
1 bdrv_child_get_parent_aio_context (c=0x559d62426d20)
at ../block.c:1440
2 bdrv_attach_child_common
(child_bs=0x559d62468190, child_name=0x559d606f9e3d "write-target",
child_class=0x559d60c58d20 <child_vvfat_qcow>, child_role=3,
perm=3, shared_perm=4, opaque=0x559d62445690,
child=0x7ffc74c2acc8, tran=0x559d6246ddd0, errp=0x7ffc74c2ae60)
at ../block.c:2795
3 bdrv_attach_child_noperm
(parent_bs=0x559d62445690, child_bs=0x559d62468190,
child_name=0x559d606f9e3d "write-target",
child_class=0x559d60c58d20 <child_vvfat_qcow>, child_role=3,
child=0x7ffc74c2acc8, tran=0x559d6246ddd0, errp=0x7ffc74c2ae60) at
../block.c:2855
4 bdrv_attach_child
(parent_bs=0x559d62445690, child_bs=0x559d62468190,
child_name=0x559d606f9e3d "write-target",
child_class=0x559d60c58d20 <child_vvfat_qcow>, child_role=3,
errp=0x7ffc74c2ae60) at ../block.c:2953
5 bdrv_open_child
(filename=0x559d62464b80 "/var/tmp/vl.h3TIS4",
options=0x559d6246ec20, bdref_key=0x559d606f9e3d "write-target",
parent=0x559d62445690, child_class=0x559d60c58d20
<child_vvfat_qcow>, child_role=3, allow_none=false,
errp=0x7ffc74c2ae60) at ../block.c:3351
6 enable_write_target (bs=0x559d62445690, errp=0x7ffc74c2ae60) at
../block/vvfat.c:3176
7 vvfat_open (bs=0x559d62445690, options=0x559d6244adb0, flags=155650,
errp=0x7ffc74c2ae60) at ../block/vvfat.c:1236
8 bdrv_open_driver (bs=0x559d62445690, drv=0x559d60d4f7e0
<bdrv_vvfat>, node_name=0x0,
options=0x559d6244adb0, open_flags=155650,
errp=0x7ffc74c2af70) at ../block.c:1557
9 bdrv_open_common (bs=0x559d62445690, file=0x0,
options=0x559d6244adb0, errp=0x7ffc74c2af70) at
...
(gdb) fr 1
#1 0x0000559d603ea3bf in bdrv_child_get_parent_aio_context
(c=0x559d62426d20) at ../block.c:1440
1440 return c->klass->get_parent_aio_context(c);
(gdb) p c->klass
$1 = (const BdrvChildClass *) 0x559d60c58d20 <child_vvfat_qcow>
(gdb) p c->klass->get_parent_aio_context
$2 = (AioContext *(*)(BdrvChild *)) 0x0
Fixes: 3ca1f3225727419ba573673b744edac10904276f
Fixes: 228ca37e12f97788e05bd0c92f89b3e5e4019607
Reported-by: John Arbuckle <programmingkidx@gmail.com>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210524101257.119377-2-vsementsov@virtuozzo.com>
Tested-by: John Arbuckle <programmingkidx@gmail.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
|
| H A D | block-backend.c | diff 228ca37e12f97788e05bd0c92f89b3e5e4019607 Wed Apr 28 10:17:34 CDT 2021 Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> block: drop ctx argument from bdrv_root_attach_child
Passing parent aio context is redundant, as child_class and parent
opaque pointer are enough to retrieve it. Drop the argument and use new
bdrv_child_get_parent_aio_context() interface.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20210428151804.439460-7-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
|
| /openbmc/qemu/include/block/ |
| H A D | block.h | diff fb62b5889695825ea22f29d4eadb9ac1b8935a71 Mon May 24 05:12:56 CDT 2021 Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> block/vvfat: child_vvfat_qcow: add .get_parent_aio_context, fix crash
Commit 3ca1f3225727419ba573673b744edac10904276f
"block: BdrvChildClass: add .get_parent_aio_context handler" introduced
new handler and commit 228ca37e12f97788e05bd0c92f89b3e5e4019607
"block: drop ctx argument from bdrv_root_attach_child" made a generic
use of it. But 3ca1f3225727419ba573673b744edac10904276f didn't update
child_vvfat_qcow. Fix that.
Before that fix the command
./build/qemu-system-x86_64 -usb -device usb-storage,drive=fat16 \
-drive file=fat:rw:fat-type=16:"<path of a host folder>",id=fat16,format=raw,if=none
crashes:
1 bdrv_child_get_parent_aio_context (c=0x559d62426d20)
at ../block.c:1440
2 bdrv_attach_child_common
(child_bs=0x559d62468190, child_name=0x559d606f9e3d "write-target",
child_class=0x559d60c58d20 <child_vvfat_qcow>, child_role=3,
perm=3, shared_perm=4, opaque=0x559d62445690,
child=0x7ffc74c2acc8, tran=0x559d6246ddd0, errp=0x7ffc74c2ae60)
at ../block.c:2795
3 bdrv_attach_child_noperm
(parent_bs=0x559d62445690, child_bs=0x559d62468190,
child_name=0x559d606f9e3d "write-target",
child_class=0x559d60c58d20 <child_vvfat_qcow>, child_role=3,
child=0x7ffc74c2acc8, tran=0x559d6246ddd0, errp=0x7ffc74c2ae60) at
../block.c:2855
4 bdrv_attach_child
(parent_bs=0x559d62445690, child_bs=0x559d62468190,
child_name=0x559d606f9e3d "write-target",
child_class=0x559d60c58d20 <child_vvfat_qcow>, child_role=3,
errp=0x7ffc74c2ae60) at ../block.c:2953
5 bdrv_open_child
(filename=0x559d62464b80 "/var/tmp/vl.h3TIS4",
options=0x559d6246ec20, bdref_key=0x559d606f9e3d "write-target",
parent=0x559d62445690, child_class=0x559d60c58d20
<child_vvfat_qcow>, child_role=3, allow_none=false,
errp=0x7ffc74c2ae60) at ../block.c:3351
6 enable_write_target (bs=0x559d62445690, errp=0x7ffc74c2ae60) at
../block/vvfat.c:3176
7 vvfat_open (bs=0x559d62445690, options=0x559d6244adb0, flags=155650,
errp=0x7ffc74c2ae60) at ../block/vvfat.c:1236
8 bdrv_open_driver (bs=0x559d62445690, drv=0x559d60d4f7e0
<bdrv_vvfat>, node_name=0x0,
options=0x559d6244adb0, open_flags=155650,
errp=0x7ffc74c2af70) at ../block.c:1557
9 bdrv_open_common (bs=0x559d62445690, file=0x0,
options=0x559d6244adb0, errp=0x7ffc74c2af70) at
...
(gdb) fr 1
#1 0x0000559d603ea3bf in bdrv_child_get_parent_aio_context
(c=0x559d62426d20) at ../block.c:1440
1440 return c->klass->get_parent_aio_context(c);
(gdb) p c->klass
$1 = (const BdrvChildClass *) 0x559d60c58d20 <child_vvfat_qcow>
(gdb) p c->klass->get_parent_aio_context
$2 = (AioContext *(*)(BdrvChild *)) 0x0
Fixes: 3ca1f3225727419ba573673b744edac10904276f
Fixes: 228ca37e12f97788e05bd0c92f89b3e5e4019607
Reported-by: John Arbuckle <programmingkidx@gmail.com>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210524101257.119377-2-vsementsov@virtuozzo.com>
Tested-by: John Arbuckle <programmingkidx@gmail.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
diff fb62b5889695825ea22f29d4eadb9ac1b8935a71 Mon May 24 05:12:56 CDT 2021 Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> block/vvfat: child_vvfat_qcow: add .get_parent_aio_context, fix crash
Commit 3ca1f3225727419ba573673b744edac10904276f
"block: BdrvChildClass: add .get_parent_aio_context handler" introduced
new handler and commit 228ca37e12f97788e05bd0c92f89b3e5e4019607
"block: drop ctx argument from bdrv_root_attach_child" made a generic
use of it. But 3ca1f3225727419ba573673b744edac10904276f didn't update
child_vvfat_qcow. Fix that.
Before that fix the command
./build/qemu-system-x86_64 -usb -device usb-storage,drive=fat16 \
-drive file=fat:rw:fat-type=16:"<path of a host folder>",id=fat16,format=raw,if=none
crashes:
1 bdrv_child_get_parent_aio_context (c=0x559d62426d20)
at ../block.c:1440
2 bdrv_attach_child_common
(child_bs=0x559d62468190, child_name=0x559d606f9e3d "write-target",
child_class=0x559d60c58d20 <child_vvfat_qcow>, child_role=3,
perm=3, shared_perm=4, opaque=0x559d62445690,
child=0x7ffc74c2acc8, tran=0x559d6246ddd0, errp=0x7ffc74c2ae60)
at ../block.c:2795
3 bdrv_attach_child_noperm
(parent_bs=0x559d62445690, child_bs=0x559d62468190,
child_name=0x559d606f9e3d "write-target",
child_class=0x559d60c58d20 <child_vvfat_qcow>, child_role=3,
child=0x7ffc74c2acc8, tran=0x559d6246ddd0, errp=0x7ffc74c2ae60) at
../block.c:2855
4 bdrv_attach_child
(parent_bs=0x559d62445690, child_bs=0x559d62468190,
child_name=0x559d606f9e3d "write-target",
child_class=0x559d60c58d20 <child_vvfat_qcow>, child_role=3,
errp=0x7ffc74c2ae60) at ../block.c:2953
5 bdrv_open_child
(filename=0x559d62464b80 "/var/tmp/vl.h3TIS4",
options=0x559d6246ec20, bdref_key=0x559d606f9e3d "write-target",
parent=0x559d62445690, child_class=0x559d60c58d20
<child_vvfat_qcow>, child_role=3, allow_none=false,
errp=0x7ffc74c2ae60) at ../block.c:3351
6 enable_write_target (bs=0x559d62445690, errp=0x7ffc74c2ae60) at
../block/vvfat.c:3176
7 vvfat_open (bs=0x559d62445690, options=0x559d6244adb0, flags=155650,
errp=0x7ffc74c2ae60) at ../block/vvfat.c:1236
8 bdrv_open_driver (bs=0x559d62445690, drv=0x559d60d4f7e0
<bdrv_vvfat>, node_name=0x0,
options=0x559d6244adb0, open_flags=155650,
errp=0x7ffc74c2af70) at ../block.c:1557
9 bdrv_open_common (bs=0x559d62445690, file=0x0,
options=0x559d6244adb0, errp=0x7ffc74c2af70) at
...
(gdb) fr 1
#1 0x0000559d603ea3bf in bdrv_child_get_parent_aio_context
(c=0x559d62426d20) at ../block.c:1440
1440 return c->klass->get_parent_aio_context(c);
(gdb) p c->klass
$1 = (const BdrvChildClass *) 0x559d60c58d20 <child_vvfat_qcow>
(gdb) p c->klass->get_parent_aio_context
$2 = (AioContext *(*)(BdrvChild *)) 0x0
Fixes: 3ca1f3225727419ba573673b744edac10904276f
Fixes: 228ca37e12f97788e05bd0c92f89b3e5e4019607
Reported-by: John Arbuckle <programmingkidx@gmail.com>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210524101257.119377-2-vsementsov@virtuozzo.com>
Tested-by: John Arbuckle <programmingkidx@gmail.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
|
| H A D | block_int.h | diff 228ca37e12f97788e05bd0c92f89b3e5e4019607 Wed Apr 28 10:17:34 CDT 2021 Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> block: drop ctx argument from bdrv_root_attach_child
Passing parent aio context is redundant, as child_class and parent
opaque pointer are enough to retrieve it. Drop the argument and use new
bdrv_child_get_parent_aio_context() interface.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20210428151804.439460-7-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
|
| /openbmc/qemu/ |
| H A D | blockjob.c | diff 228ca37e12f97788e05bd0c92f89b3e5e4019607 Wed Apr 28 10:17:34 CDT 2021 Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> block: drop ctx argument from bdrv_root_attach_child
Passing parent aio context is redundant, as child_class and parent
opaque pointer are enough to retrieve it. Drop the argument and use new
bdrv_child_get_parent_aio_context() interface.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20210428151804.439460-7-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
|
| H A D | block.c | diff fb62b5889695825ea22f29d4eadb9ac1b8935a71 Mon May 24 05:12:56 CDT 2021 Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> block/vvfat: child_vvfat_qcow: add .get_parent_aio_context, fix crash
Commit 3ca1f3225727419ba573673b744edac10904276f
"block: BdrvChildClass: add .get_parent_aio_context handler" introduced
new handler and commit 228ca37e12f97788e05bd0c92f89b3e5e4019607
"block: drop ctx argument from bdrv_root_attach_child" made a generic
use of it. But 3ca1f3225727419ba573673b744edac10904276f didn't update
child_vvfat_qcow. Fix that.
Before that fix the command
./build/qemu-system-x86_64 -usb -device usb-storage,drive=fat16 \
-drive file=fat:rw:fat-type=16:"<path of a host folder>",id=fat16,format=raw,if=none
crashes:
1 bdrv_child_get_parent_aio_context (c=0x559d62426d20)
at ../block.c:1440
2 bdrv_attach_child_common
(child_bs=0x559d62468190, child_name=0x559d606f9e3d "write-target",
child_class=0x559d60c58d20 <child_vvfat_qcow>, child_role=3,
perm=3, shared_perm=4, opaque=0x559d62445690,
child=0x7ffc74c2acc8, tran=0x559d6246ddd0, errp=0x7ffc74c2ae60)
at ../block.c:2795
3 bdrv_attach_child_noperm
(parent_bs=0x559d62445690, child_bs=0x559d62468190,
child_name=0x559d606f9e3d "write-target",
child_class=0x559d60c58d20 <child_vvfat_qcow>, child_role=3,
child=0x7ffc74c2acc8, tran=0x559d6246ddd0, errp=0x7ffc74c2ae60) at
../block.c:2855
4 bdrv_attach_child
(parent_bs=0x559d62445690, child_bs=0x559d62468190,
child_name=0x559d606f9e3d "write-target",
child_class=0x559d60c58d20 <child_vvfat_qcow>, child_role=3,
errp=0x7ffc74c2ae60) at ../block.c:2953
5 bdrv_open_child
(filename=0x559d62464b80 "/var/tmp/vl.h3TIS4",
options=0x559d6246ec20, bdref_key=0x559d606f9e3d "write-target",
parent=0x559d62445690, child_class=0x559d60c58d20
<child_vvfat_qcow>, child_role=3, allow_none=false,
errp=0x7ffc74c2ae60) at ../block.c:3351
6 enable_write_target (bs=0x559d62445690, errp=0x7ffc74c2ae60) at
../block/vvfat.c:3176
7 vvfat_open (bs=0x559d62445690, options=0x559d6244adb0, flags=155650,
errp=0x7ffc74c2ae60) at ../block/vvfat.c:1236
8 bdrv_open_driver (bs=0x559d62445690, drv=0x559d60d4f7e0
<bdrv_vvfat>, node_name=0x0,
options=0x559d6244adb0, open_flags=155650,
errp=0x7ffc74c2af70) at ../block.c:1557
9 bdrv_open_common (bs=0x559d62445690, file=0x0,
options=0x559d6244adb0, errp=0x7ffc74c2af70) at
...
(gdb) fr 1
#1 0x0000559d603ea3bf in bdrv_child_get_parent_aio_context
(c=0x559d62426d20) at ../block.c:1440
1440 return c->klass->get_parent_aio_context(c);
(gdb) p c->klass
$1 = (const BdrvChildClass *) 0x559d60c58d20 <child_vvfat_qcow>
(gdb) p c->klass->get_parent_aio_context
$2 = (AioContext *(*)(BdrvChild *)) 0x0
Fixes: 3ca1f3225727419ba573673b744edac10904276f
Fixes: 228ca37e12f97788e05bd0c92f89b3e5e4019607
Reported-by: John Arbuckle <programmingkidx@gmail.com>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210524101257.119377-2-vsementsov@virtuozzo.com>
Tested-by: John Arbuckle <programmingkidx@gmail.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
diff fb62b5889695825ea22f29d4eadb9ac1b8935a71 Mon May 24 05:12:56 CDT 2021 Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> block/vvfat: child_vvfat_qcow: add .get_parent_aio_context, fix crash
Commit 3ca1f3225727419ba573673b744edac10904276f
"block: BdrvChildClass: add .get_parent_aio_context handler" introduced
new handler and commit 228ca37e12f97788e05bd0c92f89b3e5e4019607
"block: drop ctx argument from bdrv_root_attach_child" made a generic
use of it. But 3ca1f3225727419ba573673b744edac10904276f didn't update
child_vvfat_qcow. Fix that.
Before that fix the command
./build/qemu-system-x86_64 -usb -device usb-storage,drive=fat16 \
-drive file=fat:rw:fat-type=16:"<path of a host folder>",id=fat16,format=raw,if=none
crashes:
1 bdrv_child_get_parent_aio_context (c=0x559d62426d20)
at ../block.c:1440
2 bdrv_attach_child_common
(child_bs=0x559d62468190, child_name=0x559d606f9e3d "write-target",
child_class=0x559d60c58d20 <child_vvfat_qcow>, child_role=3,
perm=3, shared_perm=4, opaque=0x559d62445690,
child=0x7ffc74c2acc8, tran=0x559d6246ddd0, errp=0x7ffc74c2ae60)
at ../block.c:2795
3 bdrv_attach_child_noperm
(parent_bs=0x559d62445690, child_bs=0x559d62468190,
child_name=0x559d606f9e3d "write-target",
child_class=0x559d60c58d20 <child_vvfat_qcow>, child_role=3,
child=0x7ffc74c2acc8, tran=0x559d6246ddd0, errp=0x7ffc74c2ae60) at
../block.c:2855
4 bdrv_attach_child
(parent_bs=0x559d62445690, child_bs=0x559d62468190,
child_name=0x559d606f9e3d "write-target",
child_class=0x559d60c58d20 <child_vvfat_qcow>, child_role=3,
errp=0x7ffc74c2ae60) at ../block.c:2953
5 bdrv_open_child
(filename=0x559d62464b80 "/var/tmp/vl.h3TIS4",
options=0x559d6246ec20, bdref_key=0x559d606f9e3d "write-target",
parent=0x559d62445690, child_class=0x559d60c58d20
<child_vvfat_qcow>, child_role=3, allow_none=false,
errp=0x7ffc74c2ae60) at ../block.c:3351
6 enable_write_target (bs=0x559d62445690, errp=0x7ffc74c2ae60) at
../block/vvfat.c:3176
7 vvfat_open (bs=0x559d62445690, options=0x559d6244adb0, flags=155650,
errp=0x7ffc74c2ae60) at ../block/vvfat.c:1236
8 bdrv_open_driver (bs=0x559d62445690, drv=0x559d60d4f7e0
<bdrv_vvfat>, node_name=0x0,
options=0x559d6244adb0, open_flags=155650,
errp=0x7ffc74c2af70) at ../block.c:1557
9 bdrv_open_common (bs=0x559d62445690, file=0x0,
options=0x559d6244adb0, errp=0x7ffc74c2af70) at
...
(gdb) fr 1
#1 0x0000559d603ea3bf in bdrv_child_get_parent_aio_context
(c=0x559d62426d20) at ../block.c:1440
1440 return c->klass->get_parent_aio_context(c);
(gdb) p c->klass
$1 = (const BdrvChildClass *) 0x559d60c58d20 <child_vvfat_qcow>
(gdb) p c->klass->get_parent_aio_context
$2 = (AioContext *(*)(BdrvChild *)) 0x0
Fixes: 3ca1f3225727419ba573673b744edac10904276f
Fixes: 228ca37e12f97788e05bd0c92f89b3e5e4019607
Reported-by: John Arbuckle <programmingkidx@gmail.com>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210524101257.119377-2-vsementsov@virtuozzo.com>
Tested-by: John Arbuckle <programmingkidx@gmail.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
diff 228ca37e12f97788e05bd0c92f89b3e5e4019607 Wed Apr 28 10:17:34 CDT 2021 Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> block: drop ctx argument from bdrv_root_attach_child
Passing parent aio context is redundant, as child_class and parent
opaque pointer are enough to retrieve it. Drop the argument and use new
bdrv_child_get_parent_aio_context() interface.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20210428151804.439460-7-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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