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-17418 Lustre <p> <a href="https://jira.whamcloud.com/browse/LU-9859" title="libcfs simplification" class="issue-link" data-issue-key="LU-9859">LU-9859</a> libcfs: refactor libcfs initialization. had removed libcfs debug init from libcfs module init itself.<br/> it caused a panic if debug settings will applied after module load.</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>crash7&gt; bt PID: 11558 TASK: ffff888113890000 CPU: 1 COMMAND: "lt-lctl" #0 [ffff88810ab5f848] __show_regs at ffffffff8186a0c5 #1 [ffff88810ab5f8d0] general_protection at ffffffff83a0115e [exception RIP: cfs_trace_lock_tcd+37] RIP: ffffffffc1495a95 RSP: ffff88810ab5f988 RFLAGS: 00010296 RAX: dffffc0000000000 RBX: 00000000000000c0 RCX: ffffffffc14d3580 RDX: 0000000000000029 RSI: 0000000000000000 RDI: 000000000000014c RBP: ffff88810ab5fbb0 R8: 0000000000000001 R9: 00000000130e0580 R10: ffff88810ab5fbc8 R11: ffffed102270b633 R12: 00000000000000c0 R13: ffffffffc14902a0 R14: 0000000000000001 R15: 0000000000000000 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 #2 [ffff88810ab5f998] libcfs_debug_msg at ffffffffc1496bec [libcfs] #3 [ffff88810ab5fbc0] cfs_str2mask at ffffffffc149e1b5 [libcfs] #4 [ffff88810ab5fc30] libcfs_debug_str2mask at ffffffffc149117b [libcfs] #5 [ffff88810ab5fd20] proc_dobitmasks at ffffffffc1492c90 [libcfs] #6 [ffff88810ab5fd70] lnet_debugfs_write at ffffffffc1491d44 [libcfs] #7 [ffff88810ab5fe00] full_proxy_write at ffffffff8242f903 #8 [ffff88810ab5fe48] vfs_write at ffffffff8220ca57 #9 [ffff88810ab5fe88] ksys_write at ffffffff8220d218 #10 [ffff88810ab5ff28] do_syscall_64 at ffffffff81809865 #11 [ffff88810ab5ff50] entry_SYSCALL_64_after_hwframe at ffffffff83a000b2 RIP: 00007fed5c5e5915 RSP: 00007ffdaaa3f9c8 RFLAGS: 00000246 RAX: ffffffffffffffda RBX: 00007ffdaaa43422 RCX: 00007fed5c5e5915 RDX: 000000000000001c RSI: 00007ffdaaa43422 RDI: 0000000000000003 RBP: 0000000000000003 R8: 0000000000000800 R9: 0000000000000003 R10: 000000000000000b R11: 0000000000000246 R12: 00007ffdaaa41bb8 R13: 00000000017252a0 R14: 00000000017252e0 R15: 0000000000000000 ORIG_RAX: 0000000000000001 CS: 0033 SS: 002b </pre> </div></div> <p>lets restore old behavior.</p> RHEL 8.5 debug kernel LU-17418

Lustre crashed immediately after load with debug kernel

Bug Blocker Open Unresolved James A Simmons Alexey Lyashkov Thu, 11 Jan 2024 15:52:45 +0000 Thu, 25 Jan 2024 21:40:14 +0000 0 4 <p>James</p> <p>I think that this was your change being referenced. Would this same crash still happen on a more current kernel? RHEL 9.3 is the primary kernel targeted for the 2.16 release...</p> <p>Peter</p> <p>Peter,</p> <p>I have a patch and it posted today.</p> <p>From: "Mr. NeilBrown" &lt;neilb@suse.de&gt;<br/> Date: Wed, 8 Nov 2023 21:15:09 -0500<br/> Subject: <span class="error">&#91;PATCH&#93;</span> <a href="https://jira.whamcloud.com/browse/LU-9859" title="libcfs simplification" class="issue-link" data-issue-key="LU-9859">LU-9859</a> libcfs: refactor libcfs initialization.<br/> Linux-commit: 64bf0b1a079d61e9e059b9dc7a58e064c7d994ae</p> <p>Change-Id: I6b5ecdba0defc6e033f78d8fc2b9be9e26c7f720<br/> Signed-off-by: Mr. NeilBrown &lt;neilb@suse.de&gt;<br/> Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;<br/> Reviewed-on: <a href="https://review.whamcloud.com/c/fs/lustre-release/+/52700" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/52700</a><br/> Tested-by: jenkins &lt;devops@whamcloud.com&gt;<br/> Tested-by: Maloo &lt;maloo@whamcloud.com&gt;<br/> Reviewed-by: Timothy Day &lt;timday@amazon.com&gt;<br/> Reviewed-by: Oleg Drokin &lt;green@whamcloud.com&gt;</p> <p>Sorry I am not following - can you please post a link to the patch in Gerrit? Nothing has been auto-commented in Jira and I cannot find anything searching on the <a href="https://jira.whamcloud.com/browse/LU-17418" title="Lustre crashed immediately after load with debug kernel" class="issue-link" data-issue-key="LU-17418">LU-17418</a> reference...</p> <p>"Alexey Lyashkov &lt;alexey.lyashkov@hpe.com&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/c/fs/lustre-release/+/53650" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/53650</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-17418" title="Lustre crashed immediately after load with debug kernel" class="issue-link" data-issue-key="LU-17418">LU-17418</a> libcfs: fix libcfs init.<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 49837ac0c06e559aa81917cc92add6382aa3b78d</p> <p>"Alexey Lyashkov &lt;alexey.lyashkov@hpe.com&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/c/fs/lustre-release/+/53821" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/53821</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-17418" title="Lustre crashed immediately after load with debug kernel" class="issue-link" data-issue-key="LU-17418">LU-17418</a> libcfs: fix libcfs init.<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 1174e98b1d7ac4047ab3e45bb4b3f1af9414ac4d</p> <p>Patch <a href="https://review.whamcloud.com/c/fs/lustre-release/+/41664" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/41664</a> does resolve this issue.</p> <p>"jsimmons &lt;jsimmons@infradead.org&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/c/fs/lustre-release/+/53825" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/53825</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-17418" title="Lustre crashed immediately after load with debug kernel" class="issue-link" data-issue-key="LU-17418">LU-17418</a> tests: test lctl set_param when only libcfs.ko loaded<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: dc82487403c6de947237764ae40a16f10f9d064e</p> Related LU-14428 Development Rank 1|i0476v: Rank (Obsolete) 9223372036854775807 Severity