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Re: systemtap 2.2.1 installcheck => kernel BUG at .. kprobes.c:707
- From: fche at redhat dot com (Frank Ch. Eigler)
- To: Timo Juhani Lindfors <timo dot lindfors at iki dot fi>
- Cc: systemtap at sourceware dot org, srostedt at redhat dot com, masami dot hiramatsu dot pt at hitachi dot com
- Date: Fri, 17 May 2013 08:21:08 -0400
- Subject: Re: systemtap 2.2.1 installcheck => kernel BUG at .. kprobes.c:707
- References: <84obc93lq6 dot fsf at sauna dot l dot org>
timo.lindfors@iki.fi wrote:
> [35567.567939] stap_ea692c11a3d17766a0d577ba42aeeaaa_14143: systemtap: 2.2.1/0.153, base: ffffffffa05b4000, memory: 24data/28text/12ctx/2058net/33alloc kb, probes: 13
> [35567.567946] Warning: found a stray unused aggrprobe@ffffffffa01b6000
> [35567.567963] ------------[ cut here ]------------
> [35567.567967] kernel BUG at /build/buildd-linux_3.8.12-1-amd64-RaG_7r/linux-3.8.12/kernel/kprobes.c:707!
> [35567.567972] invalid opcode: 0000 [#1] SMP
> [35567.567976] Modules linked in: stap_ea692c11a3d17766a0d577ba42aeeaaa_14143 systemtap_test_module1(O) systemtap_test_module2(O) zlib_deflate mtd binfmt_misc fuse nfsv4 nfsd auth_rpcgss nfs_acl nfs lockd dns_resolver fscache sunrpc loop evdev snd_pcm_oss snd_mixer_oss snd_pcm acpi_cpufreq snd_page_alloc snd_timer mperf snd processor soundcore thermal_sys pcspkr ext3 mbcache jbd virtio_rng rng_core virtio_net virtio_blk virtio_balloon virtio_pci virtio_ring virtio xen_netfront xen_blkfront [last unloaded: stap_4ed9fdb2cd6708e2efa0c51aeb4b64f_13962]
> [35567.568137] Call Trace:
> [35567.568142] [<ffffffffa01b6000>] ? 0xffffffffa01b5fff
> [35567.568148] [<ffffffffa05b93a3>] ? _stp_ctl_write_cmd+0x3d8/0x7f9 [stap_ea692c11a3d17766a0d577ba42aeeaaa_14143]
> [...]
> [35567.568185] Code: 75 12 48 8b 75 28 48 c7 c7 76 17 4f 81 31 c0 e8 ab 5f ff ff 83 65 78 fd 48 81 7d 40 39 69 38 81 75 09 83 bd a0 00 00 00 00 75 02 <0f> 0b 48 89 ef e8 48 f6 ff ff f6 45 78 01 74 27 48 89 ef e8 e6
> [35567.568233] RIP [<ffffffff81387fb6>] register_kprobe+0x1c8/0x418
> [35567.568238] RSP <ffff88003d791e48>
> [35567.568261] ---[ end trace 66e9937400424719 ]---
This seems like a recurrence of an old kernel bug related to
optimized-kprobes, see <http://sourceware.org/bugzilla/show_bug.cgi?id=13193>.
It could also be something related to ftrace/kprobes perhaps.
- FChE