August 2018 - openSUSE Kernel - openSUSE Mailing Lists

Re: [opensuse-kernel] Memory stalls after upgrading from Kernel 4.4 to 4.12
by Michal Hocko 28 Aug '18

28 Aug '18

On Tue 28-08-18 10:07:34, Michal Hocko wrote: > On Tue 28-08-18 09:32:11, Michal Hocko wrote: > > [my previous email to the mailing list got stuck waiting for moderator > > so I am changing my From to suse.cz] > > > > On Tue 28-08-18 08:52:58, Stefan Priebe - Profihost AG wrote: > > > Hi, > > > > > > Am 28.08.2018 um 08:25 schrieb Michal Hocko: > > > > On Sat 25-08-18 09:54:34, Stefan Priebe - Profihost AG wrote: > > > >> Hello, > > > >> > > > >> not sure if related but since upgrading from Kernel 4.4 to 4.12 based > > > >> SLES15 kernel i had two times the following traces while the system was > > > >> nearly unusable: > > > >> [245513.362669] kvm: page allocation stalls for 194572ms, order:9, > > > >> mode:0x4740ca(__GFP_HIGHMEM|__GFP_IO|__GFP_FS|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_THISNODE|__GFP_MOVABLE|__GFP_DIRECT_RECLAIM), > > > >> nodemask=(null) > > > > > > > > This is an THP allocation and from __GFP_DIRECT_RECLAIM I assume it is > > > > within MADV_HUGEPAGE mapping. What is your defrag setting? > > > > cat /sys/kernel/mm/transparent_hugepage/defrag > > > > > > > > spending 194s reclaiming/compacting is definitely way too much for THP. > > > > This looks like an issue reported by Andrea recently > > > > http://lkml.kernel.org/r/20180820032204.9591-1-aarcange@redhat.com > > > > > > > > We do not have a proper solution for these pathological cases yet > > > > though. > > > > > > Yes this sounds pretty much exactly the issue i'm seeing on multiple kvm > > > hosts. So this is a regression in SLES15? > > > > Well, spending so much time in the allocation is clearly undesirable. > > > > > > # cat /sys/kernel/mm/transparent_hugepage/defrag > > > always defer defer+madvise [madvise] never > > > > OK, so the immediate workaround would be to weaken the defrag mode to > > defer. You will likely not get as many THP but stalls should be gone. > > > > If you are brave enough and willing to play a bit then you can try to > > apply the patch I was proposing https://marc.info/?l=linux-mm&m=153493606221018. > > I guess we will end up with a different solution in the end but seeing > > how this behaves if you have a workload which triggers the bad behavior > > would be valuable. > > Hold on. I was thinking about this some more and will have a better > patch for you yo play with. Moved to the upstream discussion http://lkml.kernel.org/r/20180828081837.GG10223@dhcp22.suse.cz -- Michal Hocko SUSE Labs -- To unsubscribe, e-mail: opensuse-kernel+unsubscribe(a)opensuse.org To contact the owner, e-mail: opensuse-kernel+owner(a)opensuse.org

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Re: [opensuse-kernel] Memory stalls after upgrading from Kernel 4.4 to 4.12
by Stefan Priebe - Profihost AG 28 Aug '18

28 Aug '18

Hi, Am 28.08.2018 um 08:25 schrieb Michal Hocko: > On Sat 25-08-18 09:54:34, Stefan Priebe - Profihost AG wrote: >> Hello, >> >> not sure if related but since upgrading from Kernel 4.4 to 4.12 based >> SLES15 kernel i had two times the following traces while the system was >> nearly unusable: >> [245513.362669] kvm: page allocation stalls for 194572ms, order:9, >> mode:0x4740ca(__GFP_HIGHMEM|__GFP_IO|__GFP_FS|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_THISNODE|__GFP_MOVABLE|__GFP_DIRECT_RECLAIM), >> nodemask=(null) > > This is an THP allocation and from __GFP_DIRECT_RECLAIM I assume it is > within MADV_HUGEPAGE mapping. What is your defrag setting? > cat /sys/kernel/mm/transparent_hugepage/defrag > > spending 194s reclaiming/compacting is definitely way too much for THP. > This looks like an issue reported by Andrea recently > http://lkml.kernel.org/r/20180820032204.9591-1-aarcange@redhat.com > > We do not have a proper solution for these pathological cases yet > though. Yes this sounds pretty much exactly the issue i'm seeing on multiple kvm hosts. So this is a regression in SLES15? # cat /sys/kernel/mm/transparent_hugepage/defrag always defer defer+madvise [madvise] never Greets, Stefan -- To unsubscribe, e-mail: opensuse-kernel+unsubscribe(a)opensuse.org To contact the owner, e-mail: opensuse-kernel+owner(a)opensuse.org

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[opensuse-kernel] Memory stalls after upgrading from Kernel 4.4 to 4.12
by Stefan Priebe - Profihost AG 25 Aug '18

25 Aug '18

Hello, not sure if related but since upgrading from Kernel 4.4 to 4.12 based SLES15 kernel i had two times the following traces while the system was nearly unusable: [245513.362669] kvm: page allocation stalls for 194572ms, order:9, mode:0x4740ca(__GFP_HIGHMEM|__GFP_IO|__GFP_FS|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_THISNODE|__GFP_MOVABLE|__GFP_DIRECT_RECLAIM), nodemask=(null) [245513.363983] kvm cpuset=/ mems_allowed=0-1 [245513.364604] CPU: 10 PID: 84752 Comm: kvm Tainted: G W 4.12.0+98-ph <a href="/view.php?id=1" title="[geschlossen] Integration Ramdisk" class="resolved">0000001</a> SLE15 (unreleased) [245513.365258] Hardware name: Supermicro SYS-1029P-WTRT/X11DDW-NT, BIOS 2.0 12/05/2017 [245513.365905] Call Trace: [245513.366535] dump_stack+0x5c/0x84 [245513.367148] warn_alloc+0xe0/0x180 [245513.367769] __alloc_pages_slowpath+0x820/0xc90 [245513.368406] ? __slab_free+0xa9/0x2f0 [245513.369048] ? __slab_free+0xa9/0x2f0 [245513.369671] __alloc_pages_nodemask+0x1cc/0x210 [245513.370300] alloc_pages_vma+0x1e5/0x280 [245513.370921] do_huge_pmd_wp_page+0x83f/0xf00 [245513.371554] ? set_huge_zero_page.isra.52.part.53+0x9b/0xb0 [245513.372184] ? do_huge_pmd_anonymous_page+0x631/0x6d0 [245513.372812] __handle_mm_fault+0x93d/0x1060 [245513.373439] handle_mm_fault+0xc6/0x1b0 [245513.374042] __do_page_fault+0x230/0x430 [245513.374679] ? get_vtime_delta+0x13/0xb0 [245513.375411] do_page_fault+0x2a/0x70 [245513.376145] ? page_fault+0x65/0x80 [245513.376882] page_fault+0x7b/0x80 [245513.377603] RIP: 0033:0x7f3e92cc9055 [245513.378312] RSP: 002b:00007f3e707febf8 EFLAGS: 00010202 [245513.378937] RAX: 00007f370455f000 RBX: 0000000000001000 RCX: 00007f365f937c07 [245513.379554] RDX: 0000000000000f80 RSI: 00007f365f936ca7 RDI: 00007f370455f000 [245513.380184] RBP: 00007f365f933000 R08: 0000000000000000 R09: 00007f370455ffe0 [245513.380811] R10: 0000000000000000 R11: 00007f370455ffe0 R12: 00007f370455f000 [245513.381415] R13: 0000000000000000 R14: 0000000000001000 R15: 00007f3e707fec00 [245513.382056] Mem-Info: [245513.382634] active_anon:126315487 inactive_anon:1612476 isolated_anon:5 active_file:60183 inactive_file:245285 isolated_file:0 unevictable:15657 dirty:286 writeback:1 unstable:0 slab_reclaimable:75543 slab_unreclaimable:2509111 mapped:81814 shmem:31764 pagetables:370616 bounce:0 free:32294031 free_pcp:6233 free_cma:0 [245513.386615] Node 0 active_anon:254680388kB inactive_anon:1112760kB active_file:240648kB inactive_file:981168kB unevictable:13368kB isolated(anon):0kB isolated(file):0kB mapped:280240kB dirty:1144kB writeback:0kB shmem:95832kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 81225728kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no [245513.388650] Node 1 active_anon:250583072kB inactive_anon:5337144kB active_file:84kB inactive_file:0kB unevictable:49260kB isolated(anon):20kB isolated(file):0kB mapped:47016kB dirty:0kB writeback:4kB shmem:31224kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 31897600kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no [245513.391021] Node 0 DMA free:15884kB min:8kB low:20kB high:32kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15968kB managed:15884kB mlocked:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB [245513.393991] lowmem_reserve[]: 0 1618 385589 385589 385589 [245513.394931] Node 0 DMA32 free:1537304kB min:992kB low:2656kB high:4320kB active_anon:129024kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:1733284kB managed:1667716kB mlocked:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB [245513.397582] lowmem_reserve[]: 0 0 383970 383970 383970 [245513.398456] Node 0 Normal free:127154160kB min:234580kB low:627768kB high:1020956kB active_anon:254554892kB inactive_anon:1112760kB active_file:240648kB inactive_file:981168kB unevictable:13368kB writepending:1144kB present:399507456kB managed:393191300kB mlocked:13368kB slab_reclaimable:181408kB slab_unreclaimable:5532200kB kernel_stack:25784kB pagetables:859664kB bounce:0kB free_pcp:12800kB local_pcp:32kB free_cma:0kB [245513.402148] lowmem_reserve[]: 0 0 0 0 0 [245513.403156] Node 1 Normal free:421400kB min:157628kB low:421840kB high:686052kB active_anon:250581056kB inactive_anon:5337144kB active_file:84kB inactive_file:0kB unevictable:49260kB writepending:4kB present:268435456kB managed:264213808kB mlocked:49260kB slab_reclaimable:120764kB slab_unreclaimable:4504748kB kernel_stack:22696kB pagetables:622800kB bounce:0kB free_pcp:15704kB local_pcp:96kB free_cma:0kB [245513.407454] lowmem_reserve[]: 0 0 0 0 0 [245513.408503] Node 0 DMA: 1*4kB (U) 1*8kB (U) 0*16kB 0*32kB 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15884kB [245513.410689] Node 0 DMA32: 92*4kB (UM) 91*8kB (UM) 61*16kB (UM) 32*32kB (UM) 30*64kB (UM) 15*128kB (UM) 4*256kB (M) 5*512kB (UM) 1*1024kB (M) 1*2048kB (M) 372*4096kB (M) = 1537304kB [245513.412894] Node 0 Normal: 637442*4kB (UME) 1898055*8kB (UME) 1777889*16kB (ME) 723651*32kB (UME) 258591*64kB (ME) 103397*128kB (UME) 43868*256kB (UME) 17587*512kB (ME) 7570*1024kB (UM) 0*2048kB 0*4096kB = 127108336kB [245513.414888] Node 1 Normal: 20140*4kB (UME) 19290*8kB (UME) 7403*16kB (UME) 1610*32kB (UME) 274*64kB (UM) 1*128kB (U) 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 422512kB [245513.417359] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB [245513.418624] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB [245513.419853] Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB [245513.421298] Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB [245513.422741] 358967 total pagecache pages [245513.424130] 19042 pages in swap cache [245513.425513] Swap cache stats: add 4930508, delete 4911859, find 1644549/2021457 [245513.426763] Free swap = 5852kB [245513.428016] Total swap = 7813032kB [245513.429263] 167423041 pages RAM [245513.430438] 0 pages HighMem/MovableOnly [245513.431658] 2650864 pages reserved [245513.432839] 0 pages hwpoisoned [245654.463746] INFO: task pvestatd:3175 blocked for more than 120 seconds. [245654.464730] Tainted: G W 4.12.0+98-ph <a href="/view.php?id=1" title="[geschlossen] Integration Ramdisk" class="resolved">0000001</a> [245654.465666] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [245654.466591] pvestatd D 0 3175 1 0x00080000 [245654.467495] Call Trace: [245654.468413] ? __schedule+0x3bc/0x830 [245654.469283] schedule+0x32/0x80 [245654.470108] rwsem_down_read_failed+0x121/0x170 [245654.470918] ? call_rwsem_down_read_failed+0x14/0x30 [245654.471729] ? alloc_pages_current+0x91/0x140 [245654.472530] call_rwsem_down_read_failed+0x14/0x30 [245654.473316] down_read+0x13/0x30 [245654.474064] proc_pid_cmdline_read+0xae/0x3f0 [245654.474802] ? do_filp_open+0x9e/0xf0 [245654.475555] ? cp_new_stat+0x13d/0x160 [245654.476263] ? __vfs_read+0x26/0x130 [245654.476943] __vfs_read+0x26/0x130 [245654.477642] ? SYSC_newfstat+0x29/0x40 [245654.478306] ? set_close_on_exec+0x30/0x60 [245654.478923] vfs_read+0x8a/0x150 [245654.479578] SyS_read+0x42/0x90 [245654.480167] do_syscall_64+0x74/0x150 [245654.480795] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [245654.481399] RIP: 0033:0x7f1280a9e1f0 [245654.481944] RSP: 002b:00007ffdc9b0bec8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [245654.482544] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1280a9e1f0 [245654.483088] RDX: 0000000000002000 RSI: 0000561feae18030 RDI: 0000000000000008 [245654.483674] RBP: 0000000000002000 R08: 0000561feadcf990 R09: 0000000000002010 [245654.484183] R10: 0000000000000000 R11: 0000000000000246 R12: 0000561feae18030 [245654.484741] R13: 0000561fe639a010 R14: 0000000000000008 R15: 0000561feae5e900 [245654.485537] INFO: task service:86643 blocked for more than 120 seconds. [245654.486015] Tainted: G W 4.12.0+98-ph <a href="/view.php?id=1" title="[geschlossen] Integration Ramdisk" class="resolved">0000001</a> [245654.486502] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [245654.486960] service D 0 86643 1 0x00080000 [245654.487423] Call Trace: [245654.487865] ? __schedule+0x3bc/0x830 [245654.488286] schedule+0x32/0x80 [245654.488763] rwsem_down_read_failed+0x121/0x170 [245654.489200] ? __handle_mm_fault+0xd67/0x1060 [245654.489668] ? call_rwsem_down_read_failed+0x14/0x30 [245654.490088] call_rwsem_down_read_failed+0x14/0x30 [245654.490538] down_read+0x13/0x30 [245654.490964] __do_page_fault+0x32b/0x430 [245654.491389] ? get_vtime_delta+0x13/0xb0 [245654.491835] do_page_fault+0x2a/0x70 [245654.492253] ? page_fault+0x65/0x80 [245654.492703] page_fault+0x7b/0x80 [245654.493120] RIP: 0033:0x7f5ff84364d5 [245654.493548] RSP: 002b:00007f5fdf7f9720 EFLAGS: 00010246 [245654.493968] RAX: 00007f5ff3625200 RBX: 00007f5ff8639000 RCX: 0000000000000000 [245654.494371] RDX: 0000000000000003 RSI: 0000000000000278 RDI: 00000000b2659b52 [245654.494808] RBP: 000000000000001e R08: 00007f5fdf7f9870 R09: 00007f5ff8652428 [245654.495218] R10: 00007f5ff86160a8 R11: 00007f5ff488729c R12: 0000000000000061 [245654.495637] R13: 0000000000000000 R14: 00007f5fe1890280 R15: 0000000000000000 [245654.496050] INFO: task safe_timer:86651 blocked for more than 120 seconds. [245654.496466] Tainted: G W 4.12.0+98-ph <a href="/view.php?id=1" title="[geschlossen] Integration Ramdisk" class="resolved">0000001</a> [245654.496916] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [245654.497336] safe_timer D 0 86651 1 0x00080000 [245654.497790] Call Trace: [245654.498211] ? __schedule+0x3bc/0x830 [245654.498646] schedule+0x32/0x80 [245654.499074] rwsem_down_read_failed+0x121/0x170 [245654.499501] ? call_rwsem_down_read_failed+0x14/0x30 [245654.499959] call_rwsem_down_read_failed+0x14/0x30 [245654.500381] down_read+0x13/0x30 [245654.500851] __do_page_fault+0x32b/0x430 [245654.501285] ? get_vtime_delta+0x13/0xb0 [245654.501722] do_page_fault+0x2a/0x70 [245654.502163] ? page_fault+0x65/0x80 [245654.502600] page_fault+0x7b/0x80 [245654.503051] RIP: 0033:0x7f5ff84364d5 [245654.503468] RSP: 002b:00007f5fd9ff85e0 EFLAGS: 00010202 [245654.503915] RAX: 00007f5ff7309200 RBX: 00007f5ff86414e8 RCX: 0000000000000001 [245654.504342] RDX: 0000000000000003 RSI: 000000000022e038 RDI: 00000000c11a555b [245654.504780] RBP: 0000000000000007 R08: 00007f5fd9ff8730 R09: 00007f5ff8652428 [245654.505219] R10: 00007f5ff86160a8 R11: 0000000000000000 R12: 0000000000000061 [245654.505652] R13: 0000000000000000 R14: 00007f5fe1890280 R15: 0000000000000000 free -m shows: total used free shared buff/cache available Mem: 643641 572505 70477 115 658 67557 Swap: 7629 7629 0 but vm.swappiness is set to 1? vm.swappiness = 1 Is this swap related? Memory fragmentation? Or a bug in the SLES15 kernel? Greets, Stefan -- To unsubscribe, e-mail: opensuse-kernel+unsubscribe(a)opensuse.org To contact the owner, e-mail: opensuse-kernel+owner(a)opensuse.org

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[opensuse-kernel] Compiling a device tree for opensuse raspberry PI
by Raz 19 Aug '18

19 Aug '18

Hey Anyone compiled and booted successfully a device tree for PI3 arm64? I cloned https://github.com/openSUSE/kernel.git and branched out from 4.14-rc3 , compiled and booted a kernel and modules. The original kernel of this PI3 is 4.14.0-3-arm64. Now, I try to replace the device tree bcm2837-rpi-3-b.dtb with this one I compiled, but the pi refuses to boot. -- To unsubscribe, e-mail: opensuse-kernel+unsubscribe(a)opensuse.org To contact the owner, e-mail: opensuse-kernel+owner(a)opensuse.org

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[opensuse-kernel] Kernel interface changes for blockdev_direct_IO() between 4.4 and 4.4.140
by Hans-Peter Jansen 16 Aug '18

16 Aug '18

Hi, in an attempt to provide exfat-nofuse kmp for a number of our kernels[1][2], I noticed, that the signature deliberately of blockdev_direct_IO() changed between v4.4 and v4.4.140: 4.4: static inline ssize_t blockdev_direct_IO(struct kiocb *iocb, struct inode *inode, struct iov_iter *iter, loff_t offset, get_block_t get_block) 4.4.140: static inline ssize_t blockdev_direct_IO(struct kiocb *iocb, struct inode *inode, struct iov_iter *iter, get_block_t get_block) You might notice, 4.4.140 lost the offset argument. Apart from being hard to imagine, how this argument became obsolete, and given, that it reappeared for v4.5, that reveals 2 questions: * Doesn't this violate the rules of kernel sublevel updates? * How can I investigate, at which point this version got lost? In other words, is there a git tree, that happens to carry *all* sublevel updates (Greg's tree?), where I can git blame include/linux/fs.h and is this something to be expected? Thanks for your patience. Cheers, Pete [1] https://build.opensuse.org/package/show/home:frispete:kernel/exfat-nofuse [2] https://github.com/frispete/exfat-nofuse -- To unsubscribe, e-mail: opensuse-kernel+unsubscribe(a)opensuse.org To contact the owner, e-mail: opensuse-kernel+owner(a)opensuse.org

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[opensuse-kernel] bnc#1012628
by Hans-Peter Jansen 10 Aug '18

10 Aug '18

Hi, could some kind soul briefly elaborate, what's the business of referencing bnc#1012628 everywhere in Kernel:stable changelogs. E.g.: ------------------------------------------------------------------- Thu Aug 9 14:44:18 CEST 2018 - jslaby(a)suse.cz - Linux 4.17.14 (bnc#1012628). - jfs: Fix inconsistency between memory allocation and ea_buf->max_size (bnc#1012628). - xfs: validate cached inodes are free when allocated (bnc#1012628). - xfs: don't call xfs_da_shrink_inode with NULL bp (bnc#1012628). - Partially revert "block: fail op_is_write() requests to read-only partitions" (bnc#1012628). - Btrfs: fix file data corruption after cloning a range and fsync (bnc#1012628). - i2c: imx: Fix reinit_completion() use (bnc#1012628). - ring_buffer: tracing: Inherit the tracing setting to next ring buffer (bnc#1012628). - netlink: Don't shift on 64 for ngroups (bnc#1012628). - nohz: Fix missing tick reprogram when interrupting an inline softirq (bnc#1012628). - nohz: Fix local_timer_softirq_pending() (bnc#1012628). - perf/x86/intel/uncore: Fix hardcoded index of Broadwell extra PCI devices (bnc#1012628). - genirq: Make force irq threading setup more robust (bnc#1012628). - jfs: Fix usercopy whitelist for inline inode data (bnc#1012628). - scsi: qla2xxx: Return error when TMF returns (bnc#1012628). - scsi: qla2xxx: Fix ISP recovery on unload (bnc#1012628). - scsi: qla2xxx: Fix driver unload by shutting down chip (bnc#1012628). - scsi: qla2xxx: Fix NPIV deletion by calling wait_for_sess_deletion (bnc#1012628). - scsi: qla2xxx: Fix unintialized List head crash (bnc#1012628). - commit dc49b43 Sure, bnc#1012628 should track any tw kernel changes, but was closed in 10/2017 with no tracking ever got there.. Cheers, Pete -- To unsubscribe, e-mail: opensuse-kernel+unsubscribe(a)opensuse.org To contact the owner, e-mail: opensuse-kernel+owner(a)opensuse.org

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[opensuse-kernel] SD card reader touble with ASUS W202N
by Giacomo Comes 10 Aug '18

10 Aug '18

Hi, I have my kid's laptop (Asus W202N) where I have installed leap 15.0 Everything works except the SD card reader. When I insert a sd card I got this output in the journal: Aug 09 20:23:36 star kernel: usb 2-6: new SuperSpeed USB device number 7 using xhci_hcd Aug 09 20:23:36 star kernel: usb 2-6: New USB device found, idVendor=05e3, idProduct=0747 Aug 09 20:23:36 star kernel: usb 2-6: New USB device strings: Mfr=3, Product=4, SerialNumber=5 Aug 09 20:23:36 star kernel: usb 2-6: Product: USB Storage Aug 09 20:23:36 star kernel: usb 2-6: Manufacturer: Generic Aug 09 20:23:36 star kernel: usb 2-6: SerialNumber: 000000000819 Aug 09 20:23:36 star kernel: usb-storage 2-6:1.0: USB Mass Storage device detected Aug 09 20:23:36 star kernel: scsi host1: usb-storage 2-6:1.0 Aug 09 20:23:36 star mtp-probe[5135]: checking bus 2, device 7: "/sys/devices/pci0000:00/0000:00:15.0/usb2/2-6" Aug 09 20:23:36 star mtp-probe[5135]: bus: 2, device: 7 was not an MTP device Aug 09 20:23:37 star kernel: scsi 1:0:0:0: Direct-Access Generic STORAGE DEVICE 0819 PQ: 0 ANSI: 6 Aug 09 20:23:37 star kernel: sd 1:0:0:0: Attached scsi generic sg0 type 0 Aug 09 20:23:57 star kernel: sd 1:0:0:0: [sda] Spinning up disk... Aug 09 20:24:04 star kernel: . Aug 09 20:24:04 star kernel: sd 1:0:0:0: [sda] Attached SCSI removable disk But the partitions on the card are not recognized and cannot be accessed. The issue exists with the 4.12 kernel but also with kernel 4.17 and 4.18-rc8. This could be a kernel/driver problem, but (I hope) it can also be a module problem. In the past I had a sd card issue with an Acer Aspire R11 (bug 998440) for which the solution was to add a module in the initrd. Can anyone point me in the right direction about how to fix my problem? Here are more details about the hardware: lspci -n -n : 00:00.0 Host bridge [0600]: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series Host Bridge [8086:5af0] (rev 0b) 00:00.1 Signal processing controller [1180]: Intel Corporation Device [8086:5a8c] (rev 0b) 00:02.0 VGA compatible controller [0300]: Intel Corporation Device [8086:5a85] (rev 0b) 00:0e.0 Audio device [0403]: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series Audio Cluster [8086:5a98] (rev 0b) 00:0f.0 Communication controller [0780]: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series Trusted Execution Engine [8086:5a9a] (rev 0b) 00:12.0 SATA controller [0106]: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series SATA AHCI Controller [8086:5ae3] (rev 0b) 00:13.0 PCI bridge [0604]: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series PCI Express Port A #2 [8086:5ad9] (rev fb) 00:15.0 USB controller [0c03]: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series USB xHCI [8086:5aa8] (rev 0b) 00:17.0 Signal processing controller [1180]: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series I2C Controller #5 [8086:5ab4] (rev 0b) 00:1c.0 SD Host controller [0805]: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series eMMC Controller [8086:5acc] (rev 0b) 00:1f.0 ISA bridge [0601]: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series Low Pin Count Interface [8086:5ae8] (rev 0b) 00:1f.1 SMBus [0c05]: Intel Corporation Celeron N3350/Pentium N4200/Atom E3900 Series SMBus Controller [8086:5ad4] (rev 0b) 01:00.0 Network controller [0280]: Qualcomm Atheros QCA9377 802.11ac Wireless Network Adapter [168c:0042] (rev 31) ls /sys/bus/acpi/devices | grep INT INT33A1:00 INT3400:00 INT3403:00 INT3403:01 INT3403:02 INT3403:03 INT3403:04 INT3403:05 INT3404:00 INT3406:00 INT3407:00 INT3409:00 INT3409:01 INT3409:02 INT3452:00 INT3452:01 INT3452:02 INT3452:03 INT34D7:00 Attached you can find the dmesg output. Thank you for your help. Giacomo

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