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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