https://jira.whamcloud.com This file is an XML representation of an issue en-us 9.4.14 940014 05-12-2023 https://jira.whamcloud.com/browse/LU-16157 Lustre <p>easy to replicate - just build a lustre with with 2.15.0 (without my patches applied).<br/> sysctl -w kernel.panic_on_warn=1<br/> will helps with crash dump obtain.</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>[ 5715.612789] LNet: 6072:0:(rpc.c:616:srpc_service_add_buffers()) waiting for adding buffer [ 5716.149797] LNet: 6072:0:(rpc.c:616:srpc_service_add_buffers()) waiting for adding buffer [ 5716.683091] LNet: 6072:0:(rpc.c:616:srpc_service_add_buffers()) waiting for adding buffer [ 5716.952287] ================================================================== [ 5716.958820] BUG: KASAN: slab-out-of-bounds in lstcon_testrpc_prep+0x19e7/0x1bb0 [lnet_selftest] [ 5716.960248] Read of size 4 at addr ffff8888bbaa866c by task lt-lst/6371 [ 5716.961381] [ 5716.961667] CPU: 3 PID: 6371 Comm: lt-lst Tainted: G OE ---------r- - 4.18.0-305.25.1.el8_4.x86_64+debug #1 [ 5716.963474] Hardware name: Red Hat KVM, BIOS 1.15.0-2.module_el8.6.0+2880+7d9e3703 04/01/2014 [ 5716.964554] Call Trace: [ 5716.964970] dump_stack+0x8e/0xd0 [ 5716.965562] ? lstcon_testrpc_prep+0x19e7/0x1bb0 [lnet_selftest] [ 5716.966596] print_address_description.constprop.5+0x1e/0x230 [ 5716.967577] ? kmsg_dump_rewind_nolock+0xd9/0xd9 [ 5716.968385] ? lstcon_testrpc_prep+0x19e7/0x1bb0 [lnet_selftest] [ 5716.969420] ? lstcon_testrpc_prep+0x19e7/0x1bb0 [lnet_selftest] [ 5716.970411] ? lstcon_testrpc_prep+0x19e7/0x1bb0 [lnet_selftest] [ 5716.971462] __kasan_report.cold.7+0x37/0x86 [ 5716.972244] ? lstcon_testrpc_prep+0x19e7/0x1bb0 [lnet_selftest] [ 5716.973050] kasan_report+0x37/0x50 [ 5716.973682] lstcon_testrpc_prep+0x19e7/0x1bb0 [lnet_selftest] </pre> </div></div> LU-16157

KASAN reports an read out of bound during lnet-selftest.

Bug Critical Resolved Fixed Alexey Lyashkov Alexey Lyashkov Wed, 14 Sep 2022 07:21:23 +0000 Tue, 20 Dec 2022 14:56:42 +0000 Tue, 20 Dec 2022 14:56:42 +0000 Lustre 2.16.0 0 3 <p>In fact this is bug in lnet_selftest tool.<br/> lstcon_pingrpc_prep expect to have some ping parameters from user land, but lst tool don't send any it caused a read outside of allocation. let's fix this in tool and in the module.</p> <p>"Alexey Lyashkov &lt;alexey.lyashkov@hpe.com&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/48547" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/48547</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-16157" title="KASAN reports an read out of bound during lnet-selftest." class="issue-link" data-issue-key="LU-16157"><del>LU-16157</del></a> lnet: lst read-outside of allocation<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: f94b4c87c94e75314a56a0c356ac689469f62c3a</p> <p>"Oleg Drokin &lt;green@whamcloud.com&gt;" merged in patch <a href="https://review.whamcloud.com/c/fs/lustre-release/+/48547/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/48547/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-16157" title="KASAN reports an read out of bound during lnet-selftest." class="issue-link" data-issue-key="LU-16157"><del>LU-16157</del></a> lnet: lst read-outside of allocation<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: 222fbed52e02122c752fcb7fca153e9d8fe487bf</p> <p>Landed for 2.16</p> Development Rank 1|i0303z: Rank (Obsolete) 9223372036854775807 Severity