Kevin Wolf bea933e430 block/export: Fix null pointer dereference in error path ... There are some error paths in blk_exp_add() that jump to 'fail:' before 'exp' is even created. So we can't just unconditionally access exp->blk. Add a NULL check, and switch from exp->blk to blk, which is available earlier, just to be extra sure that we really cover all cases where BlockDevOps could have been set for it (in practice, this only happens in drv->create() today, so this part of the change isn't strictly necessary). Fixes: Coverity CID 1509238 Fixes: de79b52604 Signed-off-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20230510203601.418015-3-kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Tested-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> (cherry picked from commit a184563778) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>		2023-05-30 00:16:58 +03:00
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export.c	block/export: Fix null pointer dereference in error path	2023-05-30 00:16:58 +03:00
fuse.c	block/fuse: Let PUNCH_HOLE write zeroes	2023-03-10 15:14:46 +01:00
meson.build	vduse-blk: Implement vduse-blk export	2022-06-24 17:07:06 +02:00
vduse-blk.c	block/export: call blk_set_dev_ops(blk, NULL, NULL)	2023-05-10 20:50:38 +03:00
vduse-blk.h	vduse-blk: Implement vduse-blk export	2022-06-24 17:07:06 +02:00
vhost-user-blk-server.c	vduse-blk: Add serial option	2022-06-24 17:07:06 +02:00
vhost-user-blk-server.h	block/export: convert vhost-user-blk server to block export API	2020-10-23 13:42:16 +01:00
virtio-blk-handler.c	block/export: Fix graph locking in blk_get_geometry() call	2023-03-27 15:16:05 +02:00
virtio-blk-handler.h	vduse-blk: Add serial option	2022-06-24 17:07:06 +02:00