[multipath-tools] [BUG] segfault in uev_update_path

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Hi, all

    I used multipath-toosl 0.6.4 for some testing. When executing udevadm trigger command, I find something wrong with multipathd. Logs are as follows:

Mar 15 19:26:00 server155 multipathd: sdj: path wwid changed from '360002ac000000000000000e700013071' to '360002ac0000000000000002600013071'. disallowing

Mar 15 19:26:00 server155 kernel: [706183.837704] multipathd[1165440]: segfault at 198 ip 0000555f6d022607 sp 00007f1f992f5960 error 4 in multipathd[555f6d018000+18000]

 

  After parsing the address with objdump, I think uev_update_path accessing null pointer pp->mpp . Call trace maybe:

uev_trigger

uev_update_path

dm_fail_path(pp->mpp->alias, pp->dev_t);

 

    Has anyone ever met it and how to fix it?

Thanks!

Changkuo

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