Date: Fri, 15 Oct 2021 11:40:50 +0000 From: bugzilla-noreply@freebsd.org To: fs@FreeBSD.org Subject: [Bug 259093] [zfs] [panic] NULL pointer dereference on "zfs send --raw" of encrypted filesystem. Message-ID: <bug-259093-3630-r1WH3eXtRf@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-259093-3630@https.bugs.freebsd.org/bugzilla/> References: <bug-259093-3630@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D259093 --- Comment #1 from Peter Jeremy <peterj@FreeBSD.org> --- I've modified my kernel to return an error, instead of panicing, and done s= ome investigating: * The problem affects 3 (out of 81) filesystems I have. * Those 3 filesystems don't have any unusual configuration. * The encrypted pool reports no errors on a scrub. * I still have the original pool (from before I did the encryption) and I c= an do a "zfs send" of those filesystems from that pool without error. * I created a third pool, with encryption enabled, and copied/encrypted tho= se 3 filesystems from the original pool to the third pool. Doing a send from th= at pool fails in the same way. * The error reports that it can't send an intermediate snapshot within the filesystem (the snapshots are different for each filesystem). If I delete = the snapshot that reports the error then the error moves to the next most recent snapshot. * Creating the third pool with a different encryption key has no effect (unsurprising but I thought I'd check). I'm doing a scrub of the original pool but would be surprised if it reports= any errors. At this point, it looks like there's something in the original filesystems = that doesn't cause any issue with an unencrypted filesystem but breaks once that filesystem is encrypted. If anyone wants to investigate, I'm happy to share send streams from 2 of t= he filesystems - with xz, one shrinks to 39.5MB and the other to 35.8MB. --=20 You are receiving this mail because: You are the assignee for the bug.=
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