Date:   Tue, 5 Sep 2017 21:47:39 +0200
From:   Pavel Machek <pavel@....cz>
To:     kernel list <linux-kernel@...r.kernel.org>,
        adrian.hunter@...el.com, linux-mmc@...r.kernel.org
Subject: 4.13 on thinkpad x220: oops when writing to SD card

Hi!

I tried to write to the MMC card; process hung and I got this in the
dmesg.

[15909.353822] usb 2-1.2: Product: Ethernet Gadget
[15909.353826] usb 2-1.2: Manufacturer: Linux
4.12.0-03002-gec979a4-dirty with musb-hdrc
[15909.362182] cdc_ether 2-1.2:1.0 usb0: register 'cdc_ether' at
usb-0000:00:1d.0-1.2, CDC Ethernet Device, e2:f7:c0:44:db:77
[16109.316302] perf: interrupt took too long (2544 > 2500), lowering
kernel.perf_event_max_sample_rate to 78500
[18273.845406] mmc0: error -123 whilst initialising SD card
[18275.327982] mmc0: new high speed SDHC card at address 0003
[18275.328962] mmcblk0: mmc0:0003 SB08G 7.21 GiB
[18275.333698]  mmcblk0: p1 p2 p3
[18275.955293] EXT4-fs (mmcblk0p3): mounting ext3 file system using
the ext4 subsystem
[18276.013021] EXT4-fs (mmcblk0p3): recovery complete
[18276.016185] EXT4-fs (mmcblk0p3): mounted filesystem with ordered
data mode. Opts: (null)
[18306.524676]  mmcblk0: p1 p2 p3
[18439.780298] perf: interrupt took too long (3258 > 3180), lowering
kernel.perf_event_max_sample_rate to 61250
[19137.696497] perf: interrupt took too long (4082 > 4072), lowering
kernel.perf_event_max_sample_rate to 49000
[19925.945831] general protection fault: 0000 [#1] SMP
[19925.945909] Modules linked in:
[19925.945940] CPU: 2 PID: 30540 Comm: mmcqd/0 Not tainted 4.13.0 #123
[19925.946010] Hardware name: LENOVO 42872WU/42872WU, BIOS 8DET73WW
(1.43 ) 10/12/2016
[19925.946168] task: ffff88001de9e800 task.stack: ffffc900087d4000
[19925.946293] RIP: 0010:blk_rq_map_sg+0x21a/0x4a3
[19925.946376] RSP: 0000:ffffc900087d7d10 EFLAGS: 00010202
[19925.946479] RAX: 6b6b6b6b6b6b6b68 RBX: 0000000000002000 RCX:
0000000000002000
[19925.946622] RDX: 6b6b6b6b6b6b6b6b RSI: 000000006eed2000 RDI:
ffff88009e32b9e0
[19925.946767] RBP: ffffc900087d7d68 R08: 0000000000000000 R09:
0000000063188000
[19925.946919] R10: 0000160000000000 R11: 6db6db6db6db6db7 R12:
0000000000000000
[19925.947059] R13: 0000000000001000 R14: 0000000000000002 R15:
ffffea00015ad5c0
[19925.947197] FS:  0000000000000000(0000) GS:ffff88019e280000(0000)
knlGS:0000000000000000
[19925.947347] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[19925.947454] CR2: 000000004482a000 CR3: 000000000521d000 CR4:
00000000000406a0
[19925.947586] Call Trace:
[19925.947634]  mmc_queue_map_sg+0x2f/0xa3
[19925.947703]  mmc_blk_rw_rq_prep+0x1fa/0x3d8
[19925.947777]  mmc_blk_issue_rw_rq+0xe8/0x419
[19925.947852]  mmc_blk_issue_rq+0x589/0x6e7
[19925.947924]  mmc_queue_thread+0xe1/0x175
[19925.947996]  kthread+0x13d/0x145
[19925.948050]  ? mmc_blk_issue_rq+0x6e7/0x6e7
[19925.948125]  ? kthread_bind+0x2c/0x2c
[19925.948191]  ? do_int80_syscall_32+0x5c/0xb4
[19925.948269]  ? SyS_exit_group+0xf/0xf
[19925.948337]  ret_from_fork+0x22/0x30
[19925.948394] Code: 89 e8 4a 8d 74 06 ff 48 09 f7 48 39 fa 75 05 89
48 0c eb 39 48 85 c0 74 0e 48 83 20 fd 48 89 c7 e8 83 02 02 00 eb 04
48 8b 45 b0 <48> 8b 10 83 e2 03 41 f6 c7 03 74 02 0f 0b 4c 09 fa 48 89
10 8b
[19925.948980] RIP: blk_rq_map_sg+0x21a/0x4a3 RSP: ffffc900087d7d10
[19925.958464] ---[ end trace 3ddfa379837fe00b ]---
pavel@duo:~$ uname -a
Linux duo 4.13.0 #123 SMP Mon Sep 4 10:42:23 CEST 2017 x86_64
GNU/Linux
pavel@duo:~$

Similar crash happened yesterday, but that time I got panic (blinking
capslock) and stripes on screen. I did not use MMC before.

Any ideas?

Thanks,
									Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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