just tracked down a bug I was seeing when I was testing bcache on arm. Turns out whoever wrote bio_get_nr_vecs() never heard of integer overflow. But I bet it's the same bug you were seeing, and there's a trivial workaround in bcache. Patch will be up momentarily. On Fri, Jan 20, 2012 at 6:43 PM, Kent Overstreet <kent.overstreet@xxxxxxxxx> wrote: > Have you tried the bcache (3.1 based) branch with the same setup? Did > it occur there? > > On Fri, Jan 20, 2012 at 3:27 AM, Damien Churchill <damoxc@xxxxxxxxx> wrote: >> Hi there, >> >> I'm receiving the following after attempting to register a cache >> device, I've built the kernel using the Ubuntu Precise kernel with a >> patch from bcache-3.2-dev applied to the tree. >> >> The cache device was created by running: >> $ make-bcache -C -w 2k -b 1M /dev/sysvg/bcache-test >> >> The cache device is a logical volume, I'm unsure if that will have an impact? >> >> Regards, >> Damien >> >> Jan 20 11:24:36 dev1 kernel: [ 119.025724] bio: create slab <bio-1> at 1 >> Jan 20 11:24:36 dev1 kernel: [ 119.025902] bcache: invalidating existing data >> Jan 20 11:24:36 dev1 kernel: [ 119.026324] ------------[ cut here ]------------ >> Jan 20 11:24:36 dev1 kernel: [ 119.026341] kernel BUG at >> /home/dchurchill/Packages/oneiric/linux/linux-3.2.0~bcache/include/linux/scatterlist.h:63! >> Jan 20 11:24:36 dev1 kernel: [ 119.026367] invalid opcode: 0000 [#1] SMP >> Jan 20 11:24:36 dev1 kernel: [ 119.026380] CPU 0 >> Jan 20 11:24:36 dev1 kernel: [ 119.026385] Modules linked in: rfcomm >> bnep bluetooth ip6table_filter ip6_tables ebtable_nat ebtables >> ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 >> xt_state nf_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle xt_tcpudp >> iptable_filter ip_tables x_tables kvm_intel kvm parport_pc ppdev >> snd_hda_codec_hdmi snd_hda_codec_realtek binfmt_misc bridge usbhid hid >> psmouse snd_hda_intel stp snd_hda_codec snd_hwdep snd_pcm snd_seq_midi >> eeepc_wmi asus_wmi sparse_keymap radeon ttm drm_kms_helper drm wmi >> mac_hid serio_raw video snd_rawmidi snd_seq_midi_event mei(C) snd_seq >> snd_timer snd_seq_device snd i2c_algo_bit soundcore dm_multipath >> snd_page_alloc rbd libceph lp parport firewire_ohci firewire_core >> crc_itu_t e1000e pata_marvell r8169 btrfs zlib_deflate libcrc32c >> Jan 20 11:24:36 dev1 kernel: [ 119.026612] >> Jan 20 11:24:36 dev1 kernel: [ 119.026617] Pid: 2420, comm: bash >> Tainted: G C 3.2.0-9-generic #17~oneiric1 System >> manufacturer System Product Name/P8H67-M EVO >> Jan 20 11:24:36 dev1 kernel: [ 119.026649] RIP: >> 0010:[<ffffffff812f3588>] [<ffffffff812f3588>] >> blk_rq_map_sg+0x178/0x350 >> Jan 20 11:24:36 dev1 kernel: [ 119.027607] RSP: 0018:ffff880420fbf7c8 >> EFLAGS: 00010002 >> Jan 20 11:24:36 dev1 kernel: [ 119.028564] RAX: 0000000000000000 RBX: >> ffff8803fa608a20 RCX: 2700013524000135 >> Jan 20 11:24:36 dev1 kernel: [ 119.029529] RDX: 0000000000000011 RSI: >> 0000000027000135 RDI: ffff8803fa608a00 >> Jan 20 11:24:36 dev1 kernel: [ 119.030492] RBP: ffff880420fbf828 R08: >> 0000000000001000 R09: ffff880421862f00 >> Jan 20 11:24:36 dev1 kernel: [ 119.031455] R10: 0000000000000001 R11: >> 0000000000000001 R12: ffff8803fa60a510 >> Jan 20 11:24:36 dev1 kernel: [ 119.032417] R13: 0000000027000135 R14: >> ffff8803fa60a520 R15: 00000000000000d3 >> Jan 20 11:24:36 dev1 kernel: [ 119.033385] FS: >> 00007f5259391720(0000) GS:ffff88043f400000(0000) >> knlGS:0000000000000000 >> Jan 20 11:24:36 dev1 kernel: [ 119.034361] CS: 0010 DS: 0000 ES: >> 0000 CR0: 000000008005003b >> Jan 20 11:24:36 dev1 kernel: [ 119.035336] CR2: 00007f6d332e8000 CR3: >> 0000000401c16000 CR4: 00000000000406f0 >> Jan 20 11:24:36 dev1 kernel: [ 119.036310] DR0: 0000000000000000 DR1: >> 0000000000000000 DR2: 0000000000000000 >> Jan 20 11:24:36 dev1 kernel: [ 119.037287] DR3: 0000000000000000 DR6: >> 00000000ffff0ff0 DR7: 0000000000000400 >> Jan 20 11:24:36 dev1 kernel: [ 119.038266] Process bash (pid: 2420, >> threadinfo ffff880420fbe000, task ffff880403b3dc40) >> Jan 20 11:24:36 dev1 kernel: [ 119.039252] Stack: >> Jan 20 11:24:36 dev1 kernel: [ 119.040220] 0000000000000011 >> ffff880400fcd2b0 ffff8803fa608800 0100000000000001 >> Jan 20 11:24:36 dev1 kernel: [ 119.041196] ffff8804213a3368 >> ffff880421862f00 ffff880420fbf828 ffff8804209cb858 >> Jan 20 11:24:36 dev1 kernel: [ 119.042171] ffff880400fcd2b0 >> 0000000000000001 0000000000000020 ffff880424e96800 >> Jan 20 11:24:36 dev1 kernel: [ 119.043130] Call Trace: >> Jan 20 11:24:36 dev1 kernel: [ 119.044070] [<ffffffff81442521>] >> scsi_init_sgtable+0x41/0x70 >> Jan 20 11:24:36 dev1 kernel: [ 119.045036] [<ffffffff8144258d>] >> scsi_init_io+0x3d/0x150 >> Jan 20 11:24:36 dev1 kernel: [ 119.045983] [<ffffffff8144279a>] >> scsi_setup_fs_cmnd.part.34+0x5a/0x90 >> Jan 20 11:24:36 dev1 kernel: [ 119.046917] [<ffffffff814427ff>] >> scsi_setup_fs_cmnd+0x2f/0x40 >> Jan 20 11:24:36 dev1 kernel: [ 119.047837] [<ffffffff8145fb3f>] >> sd_prep_fn+0xaf/0xaf0 >> Jan 20 11:24:36 dev1 kernel: [ 119.048747] [<ffffffff813017f4>] ? >> cfq_dispatch_request+0x64/0xa0 >> Jan 20 11:24:36 dev1 kernel: [ 119.049654] [<ffffffff812eecda>] >> blk_peek_request+0xba/0x240 >> Jan 20 11:24:36 dev1 kernel: [ 119.050558] [<ffffffff81442cf8>] >> scsi_request_fn+0x58/0x4c0 >> Jan 20 11:24:36 dev1 kernel: [ 119.051461] [<ffffffff812e7c73>] ? >> __elv_add_request+0x1b3/0x290 >> Jan 20 11:24:36 dev1 kernel: [ 119.052361] [<ffffffff812ef590>] >> blk_queue_bio+0x290/0x380 >> Jan 20 11:24:36 dev1 kernel: [ 119.053262] [<ffffffff812ec114>] >> generic_make_request.part.50+0x74/0xb0 >> Jan 20 11:24:36 dev1 kernel: [ 119.054170] [<ffffffff812ec528>] >> generic_make_request+0x68/0x70 >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-bcache" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> More majordomo info at http://vger.kernel.org/majordomo-info.html > -- > To unsubscribe from this list: send the line "unsubscribe linux-bcache" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
