Public bug reported:

Seen once booting 5.4.0-1042.47

[    9.389510] Unable to handle kernel NULL pointer dereference at virtual 
address 0000000000000000
[    9.398549] Mem abort info:
[    9.401407]   ESR = 0x96000004
[    9.404494]   EC = 0x25: DABT (current EL), IL = 32 bits
[    9.409820]   SET = 0, FnV = 0
[    9.412902]   EA = 0, S1PTW = 0
[    9.416047] Data abort info:
[    9.418939]   ISV = 0, ISS = 0x00000004
[    9.422780]   CM = 0, WnR = 0
[    9.425800] user pgtable: 4k pages, 48-bit VAs, pgdp=000000046971a000
[    9.432254] [0000000000000000] pgd=0000000000000000
[    9.437144] Internal error: Oops: 96000004 [#1] PREEMPT SMP
[    9.442715] Modules linked in: mlxbf_pka(+) mlx_trio mlx_bootctl 
bluefield_edac sch_fq_codel rdma_ucm ib_u
verbs rdma_cm iw_cm ib_cm ib_core ipmi_devintf ipmi_msghandler ip_tables ipv6 
crc_ccitt btrfs zstd_compress r
aid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor 
xor_neon raid6_pq raid1 raid0 cr
ct10dif_ce mlxbf_gige i2c_mlxbf gpio_mlxbf2 aes_neon_bs aes_neon_blk
[    9.477244] CPU: 7 PID: 541 Comm: systemd-udevd Not tainted 
5.4.0-1042-bluefield #47-Ubuntu
[    9.485588] Hardware name: https://www.mellanox.com BlueField SoC/BlueField 
SoC, BIOS BlueField:3.1.0-0-g4
46abf2 Sep 15 2020
[    9.496799] pstate: 60000005 (nZCv daif -PAN -UAO)
[    9.501600] pc : pka_drv_probe+0x41c/0x5f0 [mlxbf_pka]
[    9.502693] crng init done
[    9.506737] lr : pka_drv_probe+0x3f0/0x5f0 [mlxbf_pka]
[    9.509441] random: 1 urandom warning(s) missed due to ratelimiting
[    9.514569] sp : ffff8000126d3830
[    9.514572] x29: ffff8000126d3830 x28: 0000000000000000
[    9.529440] x27: 0000000000000000 x26: ffff0003eb59e810
[    9.534743] x25: ffff80000930d040 x24: 0000000000000000
[    9.540045] x23: ffff0003e9759d00 x22: ffff800009323000
[    9.545347] x21: ffff0003eb59e800 x20: ffff0003e8a3a100
[    9.550650] x19: ffff0003e74905c0 x18: 0000000000000001
[    9.555952] x17: 58670ac4f1a91c84 x16: 77277994e98682bf
[    9.561255] x15: ffff0003e975a188 x14: ffffffffffffffff
[    9.566557] x13: ffffff0000000000 x12: 0000000000000018
[    9.571860] x11: 0101010101010101 x10: ffffff7f7f7fff7f
[    9.577163] x9 : 0000000000000000 x8 : ffff0003ebaf10c0
[    9.582465] x7 : 0008000000000000 x6 : 000fffffffffffff
[    9.587767] x5 : ffff0003ebaf1988 x4 : ffff0003ebaf18c8
[    9.593070] x3 : 0000000000000000 x2 : 0000000000000000
[    9.598372] x1 : 0000000045000000 x0 : 0000000001000000
[    9.603676] Call trace:
[    9.606118]  pka_drv_probe+0x41c/0x5f0 [mlxbf_pka]
[    9.610907]  platform_drv_probe+0x5c/0xb0
[    9.614908]  really_probe+0xdc/0x430
[    9.618475]  driver_probe_device+0xe8/0x138
[    9.622649]  device_driver_attach+0x78/0x80
[    9.626822]  __driver_attach+0xb0/0x178
[    9.630649]  bus_for_each_dev+0x84/0xe0
[    9.634476]  driver_attach+0x34/0x40
[    9.638041]  bus_add_driver+0x148/0x220
[    9.641868]  driver_register+0x68/0x118
[    9.645696]  __platform_driver_register+0x58/0x68
[    9.650394]  pka_drv_register+0x114/0x1000 [mlxbf_pka]
[    9.655526]  do_one_initcall+0x54/0x2d0
[    9.659356]  do_init_module+0x50/0x218
[    9.663096]  load_module+0x103c/0x1370
[    9.666837]  __do_sys_finit_module+0xac/0x118
[    9.671185]  __arm64_sys_finit_module+0x2c/0x38
[    9.675708]  el0_svc_common.constprop.0+0xf4/0x200
[    9.680489]  el0_svc_handler+0x38/0xa8
[    9.684229]  el0_svc+0x10/0x5c0
[    9.687365] Code: f9400021 91000400 cb010000 a90783e1 (f9400061)
[    9.693453] ---[ end trace 6f157873818019b7 ]---

** Affects: linux-bluefield (Ubuntu)
     Importance: Undecided
         Status: New

** Attachment added: "console.log"
   
https://bugs.launchpad.net/bugs/1987122/+attachment/5610066/+files/console.log

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https://bugs.launchpad.net/bugs/1987122

Title:
  Null pointer dereference at pc : pka_drv_probe+0x41c/0x5f0 [mlxbf_pka]

Status in linux-bluefield package in Ubuntu:
  New

Bug description:
  Seen once booting 5.4.0-1042.47

  [    9.389510] Unable to handle kernel NULL pointer dereference at virtual 
address 0000000000000000
  [    9.398549] Mem abort info:
  [    9.401407]   ESR = 0x96000004
  [    9.404494]   EC = 0x25: DABT (current EL), IL = 32 bits
  [    9.409820]   SET = 0, FnV = 0
  [    9.412902]   EA = 0, S1PTW = 0
  [    9.416047] Data abort info:
  [    9.418939]   ISV = 0, ISS = 0x00000004
  [    9.422780]   CM = 0, WnR = 0
  [    9.425800] user pgtable: 4k pages, 48-bit VAs, pgdp=000000046971a000
  [    9.432254] [0000000000000000] pgd=0000000000000000
  [    9.437144] Internal error: Oops: 96000004 [#1] PREEMPT SMP
  [    9.442715] Modules linked in: mlxbf_pka(+) mlx_trio mlx_bootctl 
bluefield_edac sch_fq_codel rdma_ucm ib_u
  verbs rdma_cm iw_cm ib_cm ib_core ipmi_devintf ipmi_msghandler ip_tables ipv6 
crc_ccitt btrfs zstd_compress r
  aid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor 
xor_neon raid6_pq raid1 raid0 cr
  ct10dif_ce mlxbf_gige i2c_mlxbf gpio_mlxbf2 aes_neon_bs aes_neon_blk
  [    9.477244] CPU: 7 PID: 541 Comm: systemd-udevd Not tainted 
5.4.0-1042-bluefield #47-Ubuntu
  [    9.485588] Hardware name: https://www.mellanox.com BlueField 
SoC/BlueField SoC, BIOS BlueField:3.1.0-0-g4
  46abf2 Sep 15 2020
  [    9.496799] pstate: 60000005 (nZCv daif -PAN -UAO)
  [    9.501600] pc : pka_drv_probe+0x41c/0x5f0 [mlxbf_pka]
  [    9.502693] crng init done
  [    9.506737] lr : pka_drv_probe+0x3f0/0x5f0 [mlxbf_pka]
  [    9.509441] random: 1 urandom warning(s) missed due to ratelimiting
  [    9.514569] sp : ffff8000126d3830
  [    9.514572] x29: ffff8000126d3830 x28: 0000000000000000
  [    9.529440] x27: 0000000000000000 x26: ffff0003eb59e810
  [    9.534743] x25: ffff80000930d040 x24: 0000000000000000
  [    9.540045] x23: ffff0003e9759d00 x22: ffff800009323000
  [    9.545347] x21: ffff0003eb59e800 x20: ffff0003e8a3a100
  [    9.550650] x19: ffff0003e74905c0 x18: 0000000000000001
  [    9.555952] x17: 58670ac4f1a91c84 x16: 77277994e98682bf
  [    9.561255] x15: ffff0003e975a188 x14: ffffffffffffffff
  [    9.566557] x13: ffffff0000000000 x12: 0000000000000018
  [    9.571860] x11: 0101010101010101 x10: ffffff7f7f7fff7f
  [    9.577163] x9 : 0000000000000000 x8 : ffff0003ebaf10c0
  [    9.582465] x7 : 0008000000000000 x6 : 000fffffffffffff
  [    9.587767] x5 : ffff0003ebaf1988 x4 : ffff0003ebaf18c8
  [    9.593070] x3 : 0000000000000000 x2 : 0000000000000000
  [    9.598372] x1 : 0000000045000000 x0 : 0000000001000000
  [    9.603676] Call trace:
  [    9.606118]  pka_drv_probe+0x41c/0x5f0 [mlxbf_pka]
  [    9.610907]  platform_drv_probe+0x5c/0xb0
  [    9.614908]  really_probe+0xdc/0x430
  [    9.618475]  driver_probe_device+0xe8/0x138
  [    9.622649]  device_driver_attach+0x78/0x80
  [    9.626822]  __driver_attach+0xb0/0x178
  [    9.630649]  bus_for_each_dev+0x84/0xe0
  [    9.634476]  driver_attach+0x34/0x40
  [    9.638041]  bus_add_driver+0x148/0x220
  [    9.641868]  driver_register+0x68/0x118
  [    9.645696]  __platform_driver_register+0x58/0x68
  [    9.650394]  pka_drv_register+0x114/0x1000 [mlxbf_pka]
  [    9.655526]  do_one_initcall+0x54/0x2d0
  [    9.659356]  do_init_module+0x50/0x218
  [    9.663096]  load_module+0x103c/0x1370
  [    9.666837]  __do_sys_finit_module+0xac/0x118
  [    9.671185]  __arm64_sys_finit_module+0x2c/0x38
  [    9.675708]  el0_svc_common.constprop.0+0xf4/0x200
  [    9.680489]  el0_svc_handler+0x38/0xa8
  [    9.684229]  el0_svc+0x10/0x5c0
  [    9.687365] Code: f9400021 91000400 cb010000 a90783e1 (f9400061)
  [    9.693453] ---[ end trace 6f157873818019b7 ]---

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