On Mon, Dec 12, 2016 at 08:12:57PM +0100, Edward Tomasz Napierala wrote: > On 1212T1833, Konstantin Belousov wrote: > > On Mon, Dec 12, 2016 at 03:22:22PM +0000, Edward Tomasz Napierala wrote: > > > Author: trasz > > > Date: Mon Dec 12 15:22:21 2016 > > > New Revision: 309891 > > > URL: https://svnweb.freebsd.org/changeset/base/309891 > > > > > > Log: > > > Avoid dereferencing NULL pointers in devtoname(). I've seen it panic, > > > called from ufs_print() in DDB. > > Calls from DDB should not panic even if accessing NULL pointers. > > Yeah, by "panic" I've meant the "reentering ddb" thing. It's not a panic > per se, but still breaks eg "show lockedvnodes". > > > That said, I also do not think that this is the right place to change. > > UFS um_dev should not be NULL for any active mount. > > After looking at this once again I agree. Looks like some kind of bug > specific to my sources at that point of time. Backed off.
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