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| author | Peter Lieven <pl@kamp.de> | 2016-06-20 11:24:40 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2016-06-29 14:03:47 +0200 |
| commit | 0ead93120eb7bd770b32adc00b5ec1ee721626dc (patch) | |
| tree | 1e58adf3980ba142935ca3080465bd8a7e32c92a | |
| parent | 8642c1b81e0418df066a7960a7426d85a923a253 (diff) | |
| download | focaccia-qemu-0ead93120eb7bd770b32adc00b5ec1ee721626dc.tar.gz focaccia-qemu-0ead93120eb7bd770b32adc00b5ec1ee721626dc.zip | |
iscsi: fix assertion in is_sector_request_lun_aligned
Commit 94d047a added an assertion the the request alignment check.
This introduced 2 issues:
a) A off-by-one error since a request of BDRV_REQUEST_MAX_SECTORS
is actually allowed.
b) The bdrv_get_block_status call in the read path to check the allocation
status requests up to INT_MAX sectors which triggers the assertion.
Fixes: 94d047a35bf663e28f8fef137544d8ea78165add
Signed-off-by: Peter Lieven <pl@kamp.de>
Message-Id: <1466414680-18383-1-git-send-email-pl@kamp.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | block/iscsi.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/block/iscsi.c b/block/iscsi.c index 7e78adea15..9bb5ff6216 100644 --- a/block/iscsi.c +++ b/block/iscsi.c @@ -417,7 +417,7 @@ static bool is_byte_request_lun_aligned(int64_t offset, int count, static bool is_sector_request_lun_aligned(int64_t sector_num, int nb_sectors, IscsiLun *iscsilun) { - assert(nb_sectors < BDRV_REQUEST_MAX_SECTORS); + assert(nb_sectors <= BDRV_REQUEST_MAX_SECTORS); return is_byte_request_lun_aligned(sector_num << BDRV_SECTOR_BITS, nb_sectors << BDRV_SECTOR_BITS, iscsilun); @@ -661,7 +661,8 @@ static int coroutine_fn iscsi_co_readv(BlockDriverState *bs, int64_t ret; int pnum; BlockDriverState *file; - ret = iscsi_co_get_block_status(bs, sector_num, INT_MAX, &pnum, &file); + ret = iscsi_co_get_block_status(bs, sector_num, + BDRV_REQUEST_MAX_SECTORS, &pnum, &file); if (ret < 0) { return ret; } |