We are investigating the use of NVME storage using a NXP LS1046A CPU.
I have a RDB eval board on which I installed NVME storage whose ext4 partition was created from Linux.
The commit from which the boot loader is built is: 2024.12.0-00214-ge3de867716e9-dirty from Tue Dec 17 2024
The device is probed:
`-- pci-1957:81c0.1
`-- pci-126f:2263.0
`-- 0x00000000-0x6fc86d5fff ( 447.1 GiB): /dev/nvme0n1
`-- 0x00100000-0x401001ff ( 1 GiB): /dev/nvme0n1.0, nvme0n1.Linux filesystem
nvme pci-126f:2263.0: serial: A012410180629000000
nvme pci-126f:2263.0: model: SM681GEF AGS
nvme pci-126f:2263.0: firmware: TFX7GB
The partition below was created from Linux:
barebox@LS1046A RDB Board:/ parted nvme0n1 print
Disk /dev/nvme0n1: 447.1 GiB
Partition Table: gpt
Number Start End Size Name
0 1MB 1074MB 1073MB Linux filesystem
However, attempting to create a new partition:
barebox@LS1046A RDB Board:/ parted nvme0n1 mkpart config ext4 1074MiB 1090MiB
NULL pointer dereference: DABT (current EL) exception (ESR 0x9600000b) at 0x0000000000000008
elr: 00000000fbd69444 lr : 00000000fbd0e110
x0 : 0000000000000000 x1 : 0000000000000000
x2 : 0000000000000000 x3 : fffffffffffffff8
x4 : 00000000fbff7a6c x5 : 00000000fbff7a68
x6 : 00000000bdfc5a48 x7 : 00000000bde80000
x8 : 00000000bded2dd0 x9 : 00000000fbff7a68
x10: 00000000fbdb4190 x11: 0000000000000002
x12: 00000000bdfc402e x13: 00000000bdfc4053
x14: 00000000ffffffff x15: 00000000ffffffff
x16: 0000000000000000 x17: 00000000fbff7538
x18: 00000000fbff7ac0 x19: 0000000000000000
x20: 00000000bdfc59b0 x21: 00000000bded2dd0
x22: 00000000bdfc5278 x23: 00000000bdfc57a8
x24: 0000000000004000 x25: 00000000fbdb2650
x26: 00000000fbe1c000 x27: 00000000bdfc3fc8
x28: 00000000fbde5db0 x29: 00000000fbff7a90
Call trace:
[<fbd69444>] (dev_remove_param+0x18/0x5c) from [<fbd0e110>] (dos_partition_free+0x30/0x58)
[<fbd0e110>] (dos_partition_free+0x30/0x58) from [<fbd0db68>] (partition_table_free+0x14/0x1c)
[<fbd0db68>] (partition_table_free+0x14/0x1c) from [<fbd0ec64>] (efi_partition_write+0x39c/0x3c0)
[<fbd0ec64>] (efi_partition_write+0x39c/0x3c0) from [<fbd0da08>] (partition_table_write+0x18/0x28)
[<fbd0da08>] (partition_table_write+0x18/0x28) from [<fbd65af8>] (do_parted+0x138/0x154)
[<fbd65af8>] (do_parted+0x138/0x154) from [<fbd0786c>] (execute_command+0x44/0x8c)
[<fbd0786c>] (execute_command+0x44/0x8c) from [<fbd04208>] (execute_binfmt+0x68/0xa0)
[<fbd04208>] (execute_binfmt+0x68/0xa0) from [<fbd120fc>] (run_list_real+0x8cc/0x978)
[<fbd120fc>] (run_list_real+0x8cc/0x978) from [<fbd11684>] (parse_stream_outer+0x144/0x1f0)
[<fbd11684>] (parse_stream_outer+0x144/0x1f0) from [<fbd124dc>] (run_shell+0x64/0xac)
[<fbd124dc>] (run_shell+0x64/0xac) from [<fbd01b30>] (run_init+0x148/0x250)
[<fbd01b30>] (run_init+0x148/0x250) from [<fbd01c88>] (start_barebox+0x50/0x8c)
[<fbd01c88>] (start_barebox+0x50/0x8c) from [<fbd90f48>] (psci_driver_register+0x0/0x1c)
[<fbd90f48>] (psci_driver_register+0x0/0x1c) from [<fbd0000c>] (__bare_init_start+0x0/0x14)
[<fbd0000c>] (__bare_init_start+0x0/0x14) from [<80028800>] (0x80028800)
[<80028800>] (0x80028800) from [<800280c4>] (0x800280c4)
panic: unhandled exception
A bit of debugging shows that dpd->disksig.param is NULL. Is that supposed to be?
barebox@LS1046A RDB Board:/ parted nvme0n1 mkpart config ext4 1074MiB 1090MiB
dos_partition_free: pd = 0x00000000bdfc6980
dos_partition_free: dpart = 0x00000000bdfc7738
dos_partition_free: dpd = 0x00000000bdfc6980
dos_partition_free: dpd->disksig.param= 0x0000000000000000 <==
dos_partition_free: pd = 0x00000000bdfc6980
And the partition is created if dpd->disksig.param is tested for NULL:
barebox@LS1046A RDB Board:/ parted nvme0n1 print
Disk /dev/nvme0n1: 447.1 GiB
Partition Table: gpt
Number Start End Size Name
0 1024KiB 1049600KiB 1048576KiB Linux filesystem
1 1099776KiB 1116159KiB 16384KiB config
