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-7028 Lustre <p>Running racer on master(2.7.58-22-g1d40519) with Single Node setup failed with following crash -<br/> Message from syslogd@maximus at Aug 21 03:58:02 ...<br/> kernel:BUG: spinlock bad magic on CPU#0, mdt00_002/3228 (Tainted: G --------------- H )<br/> Aug 21 03:58:02 maximus kernel: BUG: spinlock bad magic on CPU#0, mdt00_002/3228 (Tainted: G --------------- H )</p> <p>Message from syslogd@maximus at Aug 21 03:58:02 ...<br/> kernel: lock: ffff88001dd76408, .magic: 00000000, .owner: &lt;none&gt;/-1, .owner_cpu: 0<br/> Aug 21 03:58:02 maximus kernel: lock: ffff88001dd76408, .magic: 00000000, .owner: &lt;none&gt;/-1, .owner_cpu: 0<br/> Aug 21 03:58:02 maximus kernel: Pid: 3228, comm: mdt00_002 Tainted: G--------------- H 2.6.32 #2<br/> Aug 21 03:58:02 maximus kernel: Call Trace:<br/> Aug 21 03:58:02 maximus kernel: <span class="error">&#91;&lt;ffffffff8129c3ca&gt;&#93;</span> ? spin_bug+0xaa/0x100<br/> Aug 21 03:58:02 maximus kernel: <span class="error">&#91;&lt;ffffffff8129c565&gt;&#93;</span> ? _raw_spin_lock+0xa5/0x180</p> <p>Aug 21 03:58:02 maximus kernel: <span class="error">&#91;&lt;ffffffff81173f7c&gt;&#93;</span> ? kmem_cache_alloc_trace+0x20c/0x280<br/> Aug 21 03:58:02 maximus kernel: <span class="error">&#91;&lt;ffffffff815378ee&gt;&#93;</span> ? _spin_lock+0xe/0x10<br/> Aug 21 03:58:02 maximus kernel: <span class="error">&#91;&lt;ffffffffa064ec32&gt;&#93;</span> ? tgt_bitmap_chunk_alloc+0x92/0x280 <span class="error">&#91;ptlrpc&#93;</span><br/> Aug 21 03:58:02 maximus kernel: <span class="error">&#91;&lt;ffffffffa0652ce3&gt;&#93;</span> ? tgt_txn_stop_cb+0x12f3/0x1320 <span class="error">&#91;ptlrpc&#93;</span><br/> Aug 21 03:58:02 maximus kernel: <span class="error">&#91;&lt;ffffffffa0a4a796&gt;&#93;</span> ? ldiskfs_mark_inode_dirty+0x96/0x1f0 <span class="error">&#91;ldiskfs&#93;</span><br/> Aug 21 03:58:02 maximus kernel: <span class="error">&#91;&lt;ffffffffa03d683e&gt;&#93;</span> ? dt_txn_hook_stop+0x5e/0x90 <span class="error">&#91;obdclass&#93;</span><br/> Aug 21 03:58:02 maximus kernel: <span class="error">&#91;&lt;ffffffffa0aa8100&gt;&#93;</span> ? osd_trans_stop+0x190/0x590 <span class="error">&#91;osd_ldiskfs&#93;</span><br/> Aug 21 03:58:34 maximus kernel: LustreError: 19055:0:(file.c:184:ll_close_inode_openhandle()) lustre-clilmv-ffff880015c956b8: inode <span class="error">&#91;0x200000401:0x647:0x0&#93;</span> mdc<br/> close failed: rc = -13s kernel: <span class="error">&#91;&lt;ffffffffa0ccf8a6&gt;&#93;</span> ? lod_xattr_set+0x156/0x3e0<br/> Aug 21 03:58:45 maximus kernel: LustreError: 24291:0:(file.c:184:ll_close_inode_openhandle()) lustre-clilmv-ffff8800155c4860: inode <span class="error">&#91;0x200000402:0x96a:0x0&#93;</span> mdc<br/> close failed: rc = -13<br/> Aug 21 03:58:56 maximus kernel: LustreError: 28956:0:(file.c:184:ll_close_inode_openhandle()) lustre-clilmv-ffff8800155c4860: inode <span class="error">&#91;0x200000402:0xb36:0x0&#93;</span> mdc<br/> close failed: rc = -13s kernel: <span class="error">&#91;&lt;ffffffffa03f2b70&gt;&#93;</span> ? lu_ucred+0x20/0x30 <span class="error">&#91;obdclass&#93;</span><br/> Aug 21 03:58:02 maximus kernel: <span class="error">&#91;&lt;ffffffffa0cab8dc&gt;&#93;</span> ? lod_trans_stop+0x2bc/0x330 <span class="error">&#91;lod&#93;</span><br/> Aug 21 03:58:02 maximus kernel: <span class="error">&#91;&lt;ffffffffa0ba97ba&gt;&#93;</span> ? mdd_trans_stop+0x1a/0x1c<span class="error">&#91;mdd&#93;</span><br/> Aug 21 03:58:02 maximus kernel: <span class="error">&#91;&lt;ffffffffa0b98bd9&gt;&#93;</span> ? mdd_create+0x13b9/0x1760<span class="error">&#91;mdd&#93;</span><br/> Aug 21 03:58:02 maximus kernel: <span class="error">&#91;&lt;ffffffffa0bf83b4&gt;&#93;</span> ? mdt_version_save+0x84/0x1a0 <span class="error">&#91;mdt&#93;</span><br/> Aug 21 03:58:02 maximus kernel: <span class="error">&#91;&lt;ffffffffa0bfc6fc&gt;&#93;</span> ? mdt_reint_create+0xbbc/0xcc0 <span class="error">&#91;mdt&#93;</span><br/> Aug 21 03:58:02 maximus kernel: <span class="error">&#91;&lt;ffffffffa03f2b70&gt;&#93;</span> ? lu_ucred+0x20/0x30 <span class="error">&#91;obdclass&#93;</span><br/> Aug 21 03:58:02 maximus kernel: <span class="error">&#91;&lt;ffffffffa0bda245&gt;&#93;</span> ? mdt_ucred+0x15/0x20 <span class="error">&#91;mdt&#93;</span></p> <p>Aug 21 03:58:02 maximus kernel: <span class="error">&#91;&lt;ffffffffa0bf353c&gt;&#93;</span> ? mdt_root_squash+0x2c/0x3f0 <span class="error">&#91;mdt&#93;</span><br/> Aug 21 03:58:02 maximus kernel: <span class="error">&#91;&lt;ffffffffa0622072&gt;&#93;</span> ? __req_capsule_get+0x162/0x6e0 <span class="error">&#91;ptlrpc&#93;</span><br/> Aug 21 03:58:02 maximus kernel: <span class="error">&#91;&lt;ffffffffa0bf76fd&gt;&#93;</span> ? mdt_reint_rec+0x5d/0x200<span class="error">&#91;mdt&#93;</span><br/> Aug 21 03:58:02 maximus kernel: <span class="error">&#91;&lt;ffffffffa0be0bfb&gt;&#93;</span> ? mdt_reint_internal+0x62b/0xa40 <span class="error">&#91;mdt&#93;</span><br/> Aug 21 03:58:02 maximus kernel: <span class="error">&#91;&lt;ffffffffa0be14ab&gt;&#93;</span> ? mdt_reint+0x6b/0x120 <span class="error">&#91;mdt&#93;</span><br/> Aug 21 03:58:02 maximus kernel: <span class="error">&#91;&lt;ffffffffa0660bf2&gt;&#93;</span> ? tgt_request_handle+0xa42/0x1230 <span class="error">&#91;ptlrpc&#93;</span><br/> Aug 21 03:58:02 maximus kernel: <span class="error">&#91;&lt;ffffffffa060be84&gt;&#93;</span> ? ptlrpc_main+0xd74/0x1850<span class="error">&#91;ptlrpc&#93;</span><br/> Aug 21 03:58:02 maximus kernel: <span class="error">&#91;&lt;ffffffffa060b110&gt;&#93;</span> ? ptlrpc_main+0x0/0x1850 <span class="error">&#91;ptlrpc&#93;</span><br/> Aug 21 03:58:02 maximus kernel: <span class="error">&#91;&lt;ffffffff8109b656&gt;&#93;</span> ? kthread+0x96/0xa0<br/> Aug 21 03:58:02 maximus kernel: <span class="error">&#91;&lt;ffffffff8100c24a&gt;&#93;</span> ? child_rip+0xa/0x20<br/> Aug 21 03:58:02 maximus kernel: <span class="error">&#91;&lt;ffffffff8109b5c0&gt;&#93;</span> ? kthread+0x0/0xa0<br/> Aug 21 03:58:02 maximus kernel: <span class="error">&#91;&lt;ffffffff8100c240&gt;&#93;</span> ? child_rip+0x0/0x20<br/> Aug 21 03:58:17 maximus kernel: LustreError: 11382:0:(file.c:184:ll_close_inode_openhandle()) lustre-clilmv-ffff880015c956b8: inode <span class="error">&#91;0x200000401:0x32a:0x0&#93;</span> mdc<br/> close failed: rc = -13<br/> Aug 21 03:58:29 maximus kernel: LustreError: 17103:0:(file.c:184:ll_close_inode_openhandle()) lustre-clilmv-ffff880015c956b8: inode <span class="error">&#91;0x200000402:0x61b:0x0&#93;</span> mdc<br/> close failed: rc = -13</p> Single Node Stetup, Scientific Linux (2.6.32-431-17.1.el6.x86_x64-Lustre) LU-7028

racer:kernel:BUG: spinlock bad magic on CPU#0

Bug Major Resolved Fixed Emoly Liu Ashish Purkar patch Fri, 21 Aug 2015 11:14:28 +0000 Sun, 31 Jul 2016 14:05:46 +0000 Wed, 26 Aug 2015 17:51:56 +0000 Lustre 2.8.0 Lustre 2.8.0 0 5 <p>Issue here is uninitialized spin lock -</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>diff --git a/lustre/target/tgt_main.c b/lustre/target/tgt_main.c index a920716..c2b518f 100644 --- a/lustre/target/tgt_main.c +++ b/lustre/target/tgt_main.c @@ -80,6 +80,7 @@ int tgt_init(const struct lu_env *env, struct lu_target *lut, RETURN(0); spin_lock_init(&amp;lut-&gt;lut_translock); + spin_lock_init(&amp;lut-&gt;lut_client_bitmap_lock); OBD_ALLOC(lut-&gt;lut_client_bitmap, LR_MAX_CLIENTS &gt;&gt; 3); if (lut-&gt;lut_client_bitmap == NULL) </pre> </div></div> <p>Ashish Purkar (ashish.purkar@seagate.com) uploaded a new patch: <a href="http://review.whamcloud.com/16045" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/16045</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-7028" title="racer:kernel:BUG: spinlock bad magic on CPU#0" class="issue-link" data-issue-key="LU-7028"><del>LU-7028</del></a> tgt: initialize spin lock in tgt_init()<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: e0b505aca053894912a514f2be3a459591bb8175</p> <p>Hi Emoly,<br/> Can you have a look at this patch?<br/> Thanks.<br/> Joe</p> <p>Oleg Drokin (oleg.drokin@intel.com) merged in patch <a href="http://review.whamcloud.com/16045/" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/16045/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-7028" title="racer:kernel:BUG: spinlock bad magic on CPU#0" class="issue-link" data-issue-key="LU-7028"><del>LU-7028</del></a> tgt: initialize spin lock in tgt_init()<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: 0b813eea77eff5a4753f6e862d4a93da1b0329b6</p> <p>Landed for 2.8.</p> Related LU-5319 Development Rank 1|hzxkz3: Rank (Obsolete) 9223372036854775807 Severity