From: Bart Van Assche <bvanassche@acm.org>
To: Mike Snitzer <snitzer@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>, Keith Busch <keith.busch@intel.com>,
device-mapper@redhat.com, Christoph Hellwig <hch@infradead.org>,
device-mapper development <dm-devel@redhat.com>,
Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Subject: Re: [PATCH v3 0/8] dm: add request-based blk-mq support
Date: Wed, 24 Dec 2014 14:02:49 +0100 [thread overview]
Message-ID: <549AB979.4050302@acm.org> (raw)
In-Reply-To: <CAMM=eLd_A+fRBHDvcDqwF1a9co+G7XZvVhRyBd1AjxOdgjKhbA@mail.gmail.com>
On 12/23/14 22:42, Mike Snitzer wrote:
> I've rebased with this fix folded into both the 'for-next' and
> 'dm-for-3.20-blk-mq' branches of linux-dm.git
Thanks, that's appreciated. However, with this tree I ran into a
different issue:
BUG: unable to handle kernel NULL pointer dereference at 00000000000002a0
IP: [<ffffffff811b2d18>] blk_account_io_completion+0x48/0x90
PGD 8150b6067 PUD 8150b4067 PMD 0
Oops: 0000 [#1] SMP
Modules linked in: dm_queue_length dm_multipath ib_srp scsi_transport_srp netconsole configfs fuse ip6table_filter ip6_tables iptable_filter ip_tables ebtable_nat ebtables x_tables 8021q garp bridge stp llc rdma_ucm rdma_cm iw_cm af_packet ib_ipoib ib_cm ib_uverbs ib_umad mlx4_en mlx4_ib ib_sa ib_mad ib_core ib_addr snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel snd_hda_controller snd_hda_codec x86_pkg_temp_thermal coretemp snd_hwdep kvm_intel snd_pcm kvm snd_seq snd_seq_device crct10dif_pclmul snd_timer crc32c_intel e1000e mlx4_core sr_mod snd sb_edac xhci_pci edac_core cdrom microcode xhci_hcd pcspkr ptp lpc_ich mfd_core soundcore i2c_i801 pps_core wmi button sg dm_mod autofs4 ext4 crc16 mbcache jbd2 sd_mod hid_generic usbhid hid radeon i2c_algo_bit drm_kms_
helper ttm ahci libahci libata drm ehci_pci ehci_hcd usbcore agpgart usb_common processor thermal_sys hwmon scsi_dh_alua scsi_dh scsi_mod
CPU: 10 PID: 0 Comm: swapper/10 Not tainted 3.19.0-rc1+ #1
Hardware name: MSI MS-7737/Big Bang-XPower II (MS-7737), BIOS V1.5 10/16/2012
task: ffff88085c145010 ti: ffff88085c2c4000 task.ti: ffff88085c2c4000
RIP: 0010:[<ffffffff811b2d18>] [<ffffffff811b2d18>] blk_account_io_completion+0x48/0x90
RSP: 0018:ffff88085fd43df8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff880806c60000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff88085fd43df8 R08: 000000000000000a R09: 0000000000000002
R10: 000000000000004e R11: 0000000000000000 R12: ffff88080844c800
R13: ffff880806c60170 R14: 0000000000000000 R15: ffff880806c60000
FS: 0000000000000000(0000) GS:ffff88085fd40000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000000002a0 CR3: 00000008150b9000 CR4: 00000000000407e0
Stack:
ffff88085fd43e48 ffffffff811b2d9a ffff88085fd43e08 000000005fd43e08
ffff88085fd43e48 ffff880806c60000 ffff88080844c800 ffff880806c60170
0000000000000000 ffff880834fe8008 ffff88085fd43e98 ffffffffa000902f
Call Trace:
<IRQ>
[<ffffffff811b2d9a>] blk_update_request+0x3a/0x300
[<ffffffffa000902f>] scsi_end_request+0x2f/0x1e0 [scsi_mod]
[<ffffffffa000b451>] scsi_io_completion+0x101/0x690 [scsi_mod]
[<ffffffffa000124a>] scsi_finish_command+0xca/0x130 [scsi_mod]
[<ffffffffa000abff>] scsi_softirq_done+0x12f/0x160 [scsi_mod]
[<ffffffff811ba1de>] __blk_mq_complete_request_remote+0xe/0x10
[<ffffffff8109ea6d>] generic_smp_call_function_single_interrupt+0x5d/0x150
[<ffffffff8102c382>] smp_call_function_single_interrupt+0x22/0x40
[<ffffffff813e925a>] call_function_single_interrupt+0x6a/0x70
<EOI>
[<ffffffff812f0b15>] ? cpuidle_enter_state+0x55/0xc0
[<ffffffff812f0b07>] ? cpuidle_enter_state+0x47/0xc0
[<ffffffff812f0c32>] cpuidle_enter+0x12/0x20
[<ffffffff81078bcc>] cpu_startup_entry+0x22c/0x2c0
[<ffffffff8102ca1d>] start_secondary+0x14d/0x170
(gdb) list *(blk_account_io_completion+0x48)
0xffffffff811b2d18 is in blk_account_io_completion (block/blk-core.c:2114).
2109 struct hd_struct *part;
2110 int cpu;
2111
2112 cpu = part_stat_lock();
2113 part = req->part;
2114 part_stat_add(cpu, part, sectors[rw], bytes >> 9);
2115 part_stat_unlock();
2116 }
2117 }
2118
Bart.
next prev parent reply other threads:[~2014-12-24 13:02 UTC|newest]
Thread overview: 95+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-17 3:59 [PATCH v3 0/8] dm: add request-based blk-mq support Mike Snitzer
2014-12-17 3:59 ` [PATCH v3 1/8] block: require blk_rq_prep_clone() be given an initialized clone request Mike Snitzer
2014-12-17 3:59 ` [PATCH v3 2/8] block: initialize bio member of blk-mq request to NULL Mike Snitzer
2014-12-17 3:59 ` [PATCH v3 3/8] block: add blk-mq support to blk_insert_cloned_request() Mike Snitzer
2014-12-17 4:00 ` [PATCH v3 4/8] block: mark blk-mq devices as stackable Mike Snitzer
2014-12-17 4:00 ` [PATCH v3 5/8] dm: remove exports for request-based interfaces without external callers Mike Snitzer
2014-12-17 4:00 ` [PATCH v3 6/8] dm: split request structure out from dm_rq_target_io structure Mike Snitzer
2014-12-17 4:00 ` [PATCH v3 7/8] dm: submit stacked requests in irq enabled context Mike Snitzer
2014-12-17 4:00 ` [PATCH v3 8/8] dm: allocate requests from target when stacking on blk-mq devices Mike Snitzer
2014-12-17 22:35 ` Mike Snitzer
2014-12-17 21:42 ` [PATCH v3 0/8] dm: add request-based blk-mq support Keith Busch
2014-12-17 21:43 ` Jens Axboe
2014-12-17 23:06 ` Mike Snitzer
2014-12-18 1:41 ` Keith Busch
2014-12-18 4:58 ` Mike Snitzer
2014-12-19 14:32 ` Bart Van Assche
2014-12-19 15:38 ` Mike Snitzer
2014-12-19 17:14 ` Mike Snitzer
2014-12-22 15:28 ` Bart Van Assche
2014-12-22 18:49 ` Mike Snitzer
2014-12-23 16:24 ` Bart Van Assche
2014-12-23 17:13 ` Mike Snitzer
2014-12-23 21:42 ` Mike Snitzer
2014-12-24 13:02 ` Bart Van Assche [this message]
2014-12-24 18:21 ` Mike Snitzer
2014-12-24 18:55 ` Mike Snitzer
2014-12-24 19:26 ` Mike Snitzer
2015-01-02 17:53 ` Bart Van Assche
2015-01-05 21:35 ` Mike Snitzer
2015-01-06 8:59 ` Christoph Hellwig
2015-01-06 9:31 ` Bart Van Assche
2015-01-06 16:05 ` blk-mq request allocation stalls [was: Re: [PATCH v3 0/8] dm: add request-based blk-mq support] Mike Snitzer
2015-01-06 16:15 ` Jens Axboe
2015-01-07 10:33 ` Bart Van Assche
2015-01-07 15:32 ` Jens Axboe
2015-01-07 16:15 ` Mike Snitzer
2015-01-07 16:18 ` Jens Axboe
2015-01-07 16:22 ` Mike Snitzer
2015-01-07 16:24 ` Jens Axboe
2015-01-07 17:18 ` Mike Snitzer
2015-01-07 17:35 ` Jens Axboe
2015-01-07 20:09 ` Mike Snitzer
2015-01-07 20:40 ` Keith Busch
2015-01-09 19:49 ` Mike Snitzer
2015-01-09 21:07 ` Jens Axboe
2015-01-09 21:11 ` Jens Axboe
2015-01-09 21:40 ` Mike Snitzer
2015-01-09 21:56 ` Jens Axboe
2015-01-09 22:25 ` Mike Snitzer
2015-01-10 0:27 ` Jens Axboe
2015-01-10 1:48 ` Mike Snitzer
2015-01-10 1:59 ` Jens Axboe
2015-01-10 3:10 ` Mike Snitzer
2015-01-12 14:46 ` blk-mq request allocation stalls Bart Van Assche
2015-01-12 15:42 ` Jens Axboe
2015-01-12 16:12 ` Bart Van Assche
2015-01-12 16:34 ` Jens Axboe
2015-01-12 16:58 ` Mike Snitzer
2015-01-12 16:59 ` Jens Axboe
2015-01-12 17:04 ` Bart Van Assche
2015-01-12 17:09 ` Jens Axboe
2015-01-12 17:53 ` Keith Busch
2015-01-12 18:12 ` Jens Axboe
2015-01-12 18:22 ` Keith Busch
2015-01-12 18:35 ` Keith Busch
2015-01-12 19:11 ` Mike Snitzer
2015-01-12 20:21 ` Mike Snitzer
2015-01-13 12:29 ` Bart Van Assche
2015-01-13 14:17 ` Mike Snitzer
2015-01-13 14:28 ` dm + blk-mq soft lockup complaint Bart Van Assche
2015-01-13 16:20 ` Mike Snitzer
2015-01-14 9:16 ` Bart Van Assche
2015-01-14 9:16 ` Bart Van Assche
2015-01-14 18:59 ` Mike Snitzer
2015-01-15 8:11 ` Bart Van Assche
2015-01-15 15:43 ` Mike Snitzer
2015-01-15 15:55 ` Bart Van Assche
2015-01-13 14:59 ` blk-mq request allocation stalls Jens Axboe
2015-01-13 15:11 ` Keith Busch
2015-01-13 15:27 ` Keith Busch
2015-01-13 15:41 ` Mike Snitzer
2015-01-13 15:14 ` Mike Snitzer
2015-01-27 18:42 ` blk-mq DM changes for 3.20 [was: Re: blk-mq request allocation stalls] Mike Snitzer
2015-01-28 16:42 ` Jens Axboe
2015-01-28 17:44 ` Mike Snitzer
2015-01-28 17:49 ` Jens Axboe
2015-01-28 18:10 ` Mike Snitzer
2015-01-29 22:43 ` blk-mq DM changes for 3.20 [was: Re: blk-mq request allocation stalls]X Keith Busch
2015-01-29 23:09 ` Mike Snitzer
2015-01-29 23:44 ` Keith Busch
2015-01-30 0:32 ` Mike Snitzer
2015-01-12 19:05 ` blk-mq request allocation stalls Jens Axboe
2015-01-12 19:07 ` Mike Snitzer
2015-01-12 18:19 ` Mike Snitzer
2014-12-17 22:51 ` [PATCH v3 0/8] dm: add request-based blk-mq support Mike Snitzer
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