[OpenWrt-Devel] mount_root failure

[Levente]

I recently built an OpenWRT/LEDE 17.01.4 image, and after the upgrade
when the device reboots, I get this at the console:


[   39.476772] mount_root: page allocation failure: order:5, mode:0x240c0c0
[   39.483655] CPU: 0 PID: 1137 Comm: mount_root Not tainted 4.4.92 #0
[   39.490203] Stack : 8033f054 00000000 00000001 80380000 818c56a4
8037ce03 80320974 00000471
      803c3434 01f00006 00000040 0000002f 0000002f 8004ada0 00000006 00000019
      00000000 00000000 803242b8 807d3bfc 803c61e2 80048d0c 807d3bd8 00000000
      00000001 00000000 00000000 00000000 00000000 00000000 00000000 00000000
      00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
      ...
[   39.526859] Call Trace:
[   39.529395] [<8001485c>] show_stack+0x54/0x88
[   39.533895] [<80078438>] warn_alloc_failed+0xf8/0x11c
[   39.539154] [<8007a8e4>] __alloc_pages_nodemask+0x5cc/0x724
[   39.544867] [<8008d90c>] kmalloc_order+0x14/0x48
[   39.549698] [<8010d61c>] jffs2_do_mount_fs+0x7c/0x78c
[   39.554883] [<8010fd90>] jffs2_do_fill_super+0x1b0/0x2d0
[   39.560433] [<8019cbc4>] mount_mtd_aux.isra.0+0x6c/0xe4
[   39.565854] [<8019cd68>] mount_mtd+0x12c/0x178
[   39.570420] [<8011004c>] jffs2_mount+0x1c/0x28
[   39.574976] [<800ac73c>] mount_fs+0x20/0xb8
[   39.579359] [<800c4904>] vfs_kern_mount+0x68/0x114
[   39.584280] [<800c75bc>] do_mount+0x9d0/0xb38
[   39.588801] [<800c79b8>] SyS_mount+0x94/0xd8
[   39.593190] [<8000686c>] syscall_common+0x30/0x54
[   39.598067]
[   39.599606] Mem-Info:
[   39.601967] active_anon:435 inactive_anon:2 isolated_anon:0
[   39.601967]  active_file:1614 inactive_file:1647 isolated_file:32
[   39.601967]  unevictable:0 dirty:0 writeback:0 unstable:0
[   39.601967]  slab_reclaimable:398 slab_unreclaimable:1102
[   39.601967]  mapped:668 shmem:25 pagetables:53 bounce:0
[   39.601967]  free:647 free_pcp:0 free_cma:0
[   39.634604] Normal free:2588kB min:1024kB low:1280kB high:1536kB
active_anon:1740kB inactive_anon:8kB active_file:6456kB
inactive_file:6588kB unevictable:0kB isolated(anon):0kB
isolated(file):128kB present:32768kB managed:28532kB mlocked:0kB
dirty:0kB writeback:0kB mapped:2672kB shmem:100kB
slab_reclaimable:1592kB slab_unreclaimable:4408kB kernel_stack:352kB
pagetables:212kB unstable:0kB bounce:0kB free_pcp:0kB local_pcp:0kB
free_cma:0kB writeback_tmp:0kB pages_scanned:100 all_unreclaimable? no
[   39.679359] lowmem_reserve[]: 0 0

The boot process continues, and things seems to work, but I don't know
what this might cause.

This is on a WizFi630a board.

Any suggestion how to avoid this error?

Thanks,
Levente

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