------- Comment From b...@us.ibm.com 2017-08-03 13:56 EDT------- No this bug does not affect any other releases. Zesty already has the fix in it.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1689360 Title: TCMU: Fix possible overwrite of t_data_sg's last iov[] and wrongly calculating base_command_size Status in The Ubuntu-power-systems project: In Progress Status in linux package in Ubuntu: In Progress Status in linux source package in Yakkety: Won't Fix Bug description: ---Problem Description--- If there has BIDI data, its first iov[] will overwrite the last iov[] for se_cmd->t_data_sg. ---uname output--- Latest Yakkety master branch Machine Type = P8 ---Steps to Reproduce--- Just have a system do workload using tcmu. Stack trace output: I have seen this in my environment: (gdb) print *((tcmulib_cmd->iovec)+0) $7 = {iov_base = 0x3fff7c3d0000, iov_len = 8192} (gdb) print *((tcmulib_cmd->iovec)+1) $3 = {iov_base = 0x3fff7c3da000, iov_len = 4096} (gdb) print *((tcmulib_cmd->iovec)+2) $4 = {iov_base = 0x3fff7c3dc000, iov_len = 16384} (gdb) print *((tcmulib_cmd->iovec)+3) $5 = {iov_base = 0x3fff7c3f7000, iov_len = 12288} (gdb) print *((tcmulib_cmd->iovec)+4) $6 = {iov_base = 0x1306e853c0028, iov_len = 128} <--- bad pointer and length cmu: Fix wrongly calculating of the base_command_size https://patchwork.kernel.org/patch/9687657/ tcmu: Fix possible overwrite of t_data_sg's last iov[] https://patchwork.kernel.org/patch/9687565/ tcmu: Skip Data-Out blocks before gathering Data-In buffer for BIDI case https://patchwork.kernel.org/patch/9655423/ This patch should also be a part of these fixes. WITH BIDI op fixes. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-systems/+bug/1689360/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
