Date: Thu, 23 Jul 2015 22:43:53 -0400 From: Johannes Dieterich <dieterich.joh@gmail.com> To: freebsd-current <freebsd-current@freebsd.org> Subject: reproducible kernel panic on CURRENT, I/O related Message-ID: <CABquGzXri23%2B15_GPE7sokRGkh=zcMaTZbDb15UVhQDajNYByA@mail.gmail.com>
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Dear all, since approximately three weeks I am seeing kernel panics on CURRENT that are in so far reproducible as that they typically occur when I run svn up on the ports tree. Hence, it seems I/O related to me. Sorry that I only now got around to reporting it! The system is a CURRENT amd64 running ZFS on root w/ GELI. It has the aesni kernel module loaded. The world and kernel are on SVN r285764. The kernel stack backtrace looks as follows (transcript): db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe03d0394830 vpanic() at vpanic+0x189/frame 0xffffe03d03948b0 panic() at panic+0x43/frame 0xfffffe03d0394910 trash_ctor() at trash_ctor+0x48/frame 0xfffffe03d0394920 uma_zalloc_arg() at uma_zalloc_arg+0x573/frame 0xfffffe03d0394990 g_clone_bio() at g_clone_bio+0x1d/frame 0xfffffe03d03949b0 g_part_start() at g_part_start+0x8e/frame 0xfffffe03d0394a30 g_io_schedule_down() at g_io_schedule_down+0xe6/frame 0xfffffe03d0394a60 g_down_procbody() at g_down_procbody+0x7d/frame 0xfffffee03d0394a70 fork_exit() at fork_exit+0x84/frame 0xfffffe03d0394ab0 fork_trampoline at fork_trampoline+0xe/frame 0xfffffe03d0394ab0 --- trap 0, rip = 0, rsp =0xfffffe03d0394b90, rbp = 0--- KDB: enter: panic [ thread pid 13 tid 100017 ] Stopped at kdb_enter+0x3e: movq $0,kdb_why Due to above setup, I cannot provide a core file, sorry. Please let me know if there is any data you want me to obtain for debugging. As I said above, it is fairly simple for me to hit the panic. Best Johannes
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