Re: [Bug 204371] BUG kmalloc-4k (Tainted: G W ): Object padding overwritten
flat view
From: Michael Ellerman <mpe@ellerman.id.au>
Date: 2019-07-31 13:35:57
bugzilla-daemon@bugzilla.kernel.org writes:
quoted hunk ↗ jump to hunk
https://bugzilla.kernel.org/show_bug.cgi?id=204371--- Comment #2 from Andrew Morton (akpm@linux-foundation.org) ---(switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). On Mon, 29 Jul 2019 22:35:48 +0000 bugzilla-daemon@bugzilla.kernel.org wrote:quoted
https://bugzilla.kernel.org/show_bug.cgi?id=204371 Bug ID: 204371 Summary: BUG kmalloc-4k (Tainted: G W ): Object padding overwritten Product: Memory Management Version: 2.5 Kernel Version: 5.3.0-rc2 Hardware: PPC-32 OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Slab Allocator Assignee: akpm@linux-foundation.org Reporter: erhard_f@mailbox.org Regression: Nocc'ing various people here. I suspect proc_cgroup_show() is innocent and that perhaps bpf_prepare_filter() had a memory scribble. iirc there has been at least one recent pretty serious bpf fix applied recently. Can others please take a look?
I haven't been able to reproduce this on a 64-bit or 32-bit powerpc machine here. But I don't run gentoo userspace, so I suspect I'm not tripping the same path at boot. I did run the seccomp selftest and that didn't trip it either. cheers