*** This bug is a duplicate of bug 1763454 ***
https://bugs.launchpad.net/bugs/1763454
** This bug has been marked a duplicate of bug 1763454
bpf_map_lookup_elem: BUG: unable to handle kernel paging request
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Bugs,
The same issue was reported in LP#1763454
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1763454
Seth Forshee provided a patch there that solves the issue here as well.
His patch has been sent to the mailing list already.
>From my point of view we could treat this ticket here as a
You may want to submit your patch to the Ubuntu kernel team mailing list for
review:
kernel-t...@lists.ubuntu.com
** Package changed: linux-meta-lts-xenial (Ubuntu) => linux (Ubuntu)
** Changed in: linux (Ubuntu)
Importance: Undecided => High
** Also affects: linux (Ubuntu Xenial)
I revised the patch a little bit. It needs an additional bounds check
for insn_idx. And another seen=true line needs to removed. See the newly
attached patch.
** Patch added: "Revised BPF verifier fix"
** Tags added: patch
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https://bugs.launchpad.net/bugs/1763352
Title:
kernel panic in bpf_map_update_elem (with bcc tool ext4slower)
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This issue is most likely caused by the BPF verifier changes from
ubuntu-genial commit 68dd63b26223880d1b431b6bf54e45d93d04361a.
The BPF uses a map and bpf_map_update_elem crashes because the map
pointer is invalid.
The map pointer is invalid because the BPF instruction to load the
pointer into
Actual problematic package name: linux-image-4.4.0-119-generic
** Package changed: ubuntu => linux-meta-lts-xenial (Ubuntu)
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https://bugs.launchpad.net/bugs/1763352
Title:
kernel
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux-meta-lts-xenial (Ubuntu)
Status: New => Confirmed
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Thank you for taking the time to report this bug and helping to make
Ubuntu better. It seems that your bug report is not filed about a
specific source package though, rather it is just filed against Ubuntu
in general. It is important that bug reports be filed about source
packages so that people
