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Bug
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Resolution: Fixed
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Blocker
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Lustre 1.8.6
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None
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3
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5072
I have been chasing a weird bug with MMP on 2.6.39-rc1 (i want to push MMP upstream) and it turns out to be an horrible memory corruption which can impact any kernels.
+ mmpd_data = kmalloc(sizeof(struct mmpd_data *), GFP_KERNEL);
^^^^^^^^^^^^^^^^^^^
OUCH!!! should be sizeof(struct mmpd_data)
+ if (!mmpd_data) {
+ ext3_warning(sb, KERN_ERR, "not enough memory for mmpd_data");
+ goto failed;
+ }
+ mmpd_data->sb = sb;
+ mmpd_data->bh = bh;
The memory corruption was introduced by bugzilla ticket 22117 in 1.8.5.
This issue can cause all sorts of oops everywhere in the kernel.
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Lustre 1.8.x known issues tracker
While testing against Lustre b18 branch, we would hit known bugs which were already reported in Lustre Bugzilla https://bugzilla.lustre.org/. In order to move away from relying on Bugzilla, we would create a JIRA