[Bug 256712] UFS: kernel panic: ffs_blk free_cg: freeing free frag – in response to pkg-delete(8) soon after login
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Date: Mon, 21 Jun 2021 09:24:08 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=256712 --- Comment #12 from Gary Jennejohn <gljennjohn@gmail.com> --- (In reply to Graham Perrin from comment #11) This reminds me of a kernel panic which I saw and reported on. I was asked to add INVARIANTS and DEBUG=-O0 to my kernel config file to get better backtraces. Since I already had makeoptions DEBUG=-g, I actually added makeoptions DEBUG+=-O0 to get both -g and -O0 in the compiler flags. As one can see in your backtrace, parts of the kernel were optimized out. The -O0 assures that no optimization is done. That will produce better backtrace. For INVARIANTS I added options INVARIANTS and options INVARIANT_SUPPORT. So, if you can easily reproduce the panic I recommend adding these to your kernel config file and then rerunning your test. -- You are receiving this mail because: You are the assignee for the bug.