On Tuesday, 13.03.2018 at 17:30, Martin Lucina wrote:
> On Tuesday, 13.03.2018 at 15:18, Martin Lucina wrote:
> > I've now also tried with a 4.16-rc5 kernel and get the same "bad page
> > state" early in the boot process.
> >
> > Are current mainline kernels stable on this board, or do I need some extra
> > patches? Headless operation is enough for me.
>
> I just tried with U-boot 2018.03 (released as of a few hours ago) and with
> mainline 4.16-rc5 kernel the board now completes debootstrap --second-stage
> sucessfully, so it looks like this problem is solved in the new U-boot
> (previously I was using 2018.01).
>
> Will report back if I see any further instability.
It seems that I spoke too soon. Have power-cycled the board to do a
slightly different debootstrap configuration from scratch and I'm getting
lots more of "BUG: bad page state in process ...":
[ 0.096713] CPU2: Booted secondary processor 0x0000000002 [0x410fd034]
[ 0.120292] BUG: Bad page state in process kthreadd pfn:7da80
[ 0.120316] page:ffff7e0000f6a000 count:64 mapcount:0
mapping:0000000000000000 index:0x0
[ 0.120326] flags: 0xfffc00000000000()
[ 0.120339] raw: 0fffc00000000000 0000000000000000 0000000000000000
00000040ffffffff
[ 0.120349] raw: dead000000000100 dead000000000200 0000000000000000
0000000000000000
[ 0.120355] page dumped because: nonzero _count
[ 0.120361] Modules linked in:
[ 0.120374] CPU: 0 PID: 2 Comm: kthreadd Not tainted 4.16.0-rc5 #2
[ 0.120379] Hardware name: Olimex A64-Olinuxino (DT)
[ 0.120386] Call trace:
[ 0.120404] dump_backtrace+0x0/0x198
[ 0.120415] show_stack+0x14/0x20
[ 0.120426] dump_stack+0x98/0xbc
[ 0.120436] bad_page+0xe4/0x148
[ 0.120444] check_new_page_bad+0x68/0x90
[ 0.120454] get_page_from_freelist+0xbec/0x1090
[ 0.120463] __alloc_pages_nodemask+0xfc/0xc00
[ 0.120474] __vmalloc_node_range+0xfc/0x288
[ 0.120485] copy_process.isra.6.part.7+0x4e4/0x1638
[ 0.120493] _do_fork+0xcc/0x368
[ 0.120501] kernel_thread+0x30/0x38
[ 0.120511] kthreadd+0x170/0x1e8
[ 0.120519] ret_from_fork+0x10/0x18
[ 0.120525] Disabling lock debugging due to kernel taint
[ 0.124719] Detected VIPT I-cache on CPU3
[ 0.124750] CPU3: Booted secondary processor 0x0000000003 [0x410fd034]
[ 0.124823] smp: Brought up 1 node, 4 CPUs
[ 0.124835] SMP: Total of 4 processors activated.
...
[ 0.134003] pinctrl core: initialized pinctrl subsystem
[ 0.135125] BUG: Bad page state in process kworker/u8:3 pfn:7d03d
[ 0.135146] page:ffff7e0000f40f40 count:64 mapcount:0
mapping:0000000000000000 index:0x0
[ 0.135158] flags: 0xfffc00000000000()
[ 0.135170] raw: 0fffc00000000000 0000000000000000 0000000000000000
00000040ffffffff
[ 0.135180] raw: dead000000000100 dead000000000200 0000000000000000
0000000000000000
[ 0.135187] page dumped because: nonzero _count
[ 0.135193] Modules linked in:
[ 0.135207] CPU: 0 PID: 40 Comm: kworker/u8:3 Tainted: G B
4.16.0-rc5 #2
[ 0.135213] Hardware name: Olimex A64-Olinuxino (DT)
[ 0.135237] Workqueue: events_unbound call_usermodehelper_exec_work
[ 0.135246] Call trace:
[ 0.135259] dump_backtrace+0x0/0x198
[ 0.135269] show_stack+0x14/0x20
[ 0.135282] dump_stack+0x98/0xbc
[ 0.135292] bad_page+0xe4/0x148
[ 0.135300] check_new_page_bad+0x68/0x90
[ 0.135309] get_page_from_freelist+0xbec/0x1090
[ 0.135318] __alloc_pages_nodemask+0xfc/0xc00
[ 0.135328] alloc_pages_current+0x80/0xe8
[ 0.135339] __vmalloc_node_range+0x17c/0x288
[ 0.135341] DMI not present or invalid.
[ 0.135355] copy_process.isra.6.part.7+0x4e4/0x1638
[ 0.135363] _do_fork+0xcc/0x368
[ 0.135371] kernel_thread+0x30/0x38
[ 0.135380] call_usermodehelper_exec_work+0x40/0xf8
[ 0.135390] process_one_work+0x1c0/0x328
[ 0.135398] worker_thread+0x50/0x458
[ 0.135407] kthread+0xf8/0x128
[ 0.135416] ret_from_fork+0x10/0x18
[ 0.135783] NET: Registered protocol family 16
...
[ 0.137706] cpuidle: using governor menu
[ 0.137796] BUG: Bad page state in process swapper/0 pfn:7d4a8
[ 0.137809] page:ffff7e0000f52a00 count:72 mapcount:0
mapping:0000000000000000 index:0x2
[ 0.137820] flags: 0xfffc00000000000()
[ 0.137833] raw: 0fffc00000000000 0000000000000000 0000000000000002
00000048ffffffff
[ 0.137843] raw: dead000000000100 dead000000000200 0000000000000000
0000000000000000
[ 0.137849] page dumped because: nonzero _count
[ 0.137854] Modules linked in:
[ 0.137868] CPU: 2 PID: 1 Comm: swapper/0 Tainted: G B
4.16.0-rc5 #2
[ 0.137874] Hardware name: Olimex A64-Olinuxino (DT)
[ 0.137881] Call trace:
[ 0.137899] dump_backtrace+0x0/0x198
[ 0.137910] show_stack+0x14/0x20
[ 0.137922] dump_stack+0x98/0xbc
[ 0.137932] bad_page+0xe4/0x148
[ 0.137940] check_new_page_bad+0x68/0x90
[ 0.137950] get_page_from_freelist+0x880/0x1090
[ 0.137959] __alloc_pages_nodemask+0xfc/0xc00
[ 0.137972] alloc_page_interleave+0x18/0xa8
[ 0.137980] alloc_pages_current+0xd4/0xe8
[ 0.137991] new_slab+0x41c/0x610
[ 0.138001] ___slab_alloc+0x4ac/0x560
[ 0.138010] __slab_alloc.isra.23+0x24/0x38
[ 0.138019] kmem_cache_alloc+0x1ac/0x1e0
[ 0.138029] sock_alloc_inode+0x28/0xb8
[ 0.138040] alloc_inode+0x20/0xa0
[ 0.138049] new_inode_pseudo+0x10/0x50
[ 0.138057] sock_alloc+0x1c/0x78
[ 0.138064] sock_create_lite+0x18/0x40
[ 0.138076] __netlink_kernel_create+0x70/0x248
[ 0.138086] uevent_net_init+0x78/0x100
[ 0.138097] ops_init+0xb4/0x148
[ 0.138107] register_pernet_operations+0x140/0x1d0
[ 0.138116] register_pernet_subsys+0x34/0x58
[ 0.138129] kobject_uevent_init+0x18/0x20
[ 0.138137] do_one_initcall+0x50/0x160
[ 0.138147] kernel_init_freeable+0x184/0x224
[ 0.138156] kernel_init+0x10/0x108
[ 0.138165] ret_from_fork+0x10/0x18
[ 0.138344] vdso: 2 pages (1 code @ (ptrval), 1 data @
(ptrval))
[ 0.138361] hw-breakpoint: found 6 breakpoint and 4 watchpoint registers.
[ 0.139623] DMA: preallocated 256 KiB pool for atomic allocations
...
and so on.
Any ideas? This is with U-boot 2018.03 (released a few hours ago) and mainline
Linux 4.16-rc5.
-mato
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