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bug: s32ilp32: Disable STRICT_KERNEL(MODULE)_RWX config
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This bug is come from faulting in PGD entries [1], rv32 ISA can't
solve it because of its satp design. This problem has been solved
in both s64ilp32 and s64lp64. Only s32ilp32 has the problem.

 clk: Disabling unused clocks
 dw-apb-uart 1900d000.serial: forbid DMA for kernel console
 Unable to handle kernel paging request at virtual address c0c00000
 Oops [#1]
 Modules linked in:
 CPU: 1 PID: 1 Comm: swapper/0 Not tainted 6.6.0 #7
 Hardware name: T-HEAD C9XX (DT)
 epc : __memset+0x58/0xf8
  ra : free_reserved_area+0x148/0x186
 epc : c08483c8 ra : c014e330 sp : c206ff00
  gp : c1cb8fe8 tp : c20f8000 t0 : c0c00000
  t1 : 5fc00000 t2 : 00000011 s0 : c206ff50
  s1 : 000000cc a0 : c0c00000 a1 : cccccccc
  a2 : 00001000 a3 : c0c01000 a4 : 00000000
  a5 : 000000ff a6 : 00000001 a7 : 52464e43
  s2 : c1017000 s3 : ffffffff s4 : 00000000
  s5 : ffffbfff s6 : c1cbb834 s7 : c1ce5e80
  s8 : c15f2220 s9 : c0c00000 s10: ff320000
  s11: 00000001 t3 : 0000000f t4 : e0000000
  t5 : 00000004 t6 : c2939011
 status: 00008120 badaddr: c0c00000 cause: 0000000f
 [<c08483c8>] __memset+0x58/0xf8
 [<c000416e>] free_initmem+0x74/0x82
 [<c0856bf6>] kernel_init+0x3a/0x106
 [<c00035ba>] ret_from_fork+0xa/0x1c
 Code: 0713 0807 82b3 40e2 0797 0000 8793 00c7 97ba 8782 (a023) 00b2
 ---[ end trace 0000000000000000 ]---
 Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b

[1]: https://lore.kernel.org/lkml/[email protected]/
Signed-off-by: Guo Ren <[email protected]>
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@guoren83 @RevySR
guoren83 authored and RevySR committed Jun 29, 2024
1 parent 3384bf4 commit 8b05567
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Showing 2 changed files with 4 additions and 0 deletions.
2 changes: 2 additions & 0 deletions arch/riscv/configs/32-bit.config
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Original file line number Diff line number Diff line change
Expand Up @@ -4,3 +4,5 @@ CONFIG_32BIT=y
# CONFIG_PORTABLE is not set
CONFIG_NONPORTABLE=y
CONFIG_CGROUPS=n
CONFIG_STRICT_KERNEL_RWX=n
CONFIG_STRICT_MODULE_RWX=n
2 changes: 2 additions & 0 deletions arch/riscv/configs/64ilp32.config
View file
Original file line number Diff line number Diff line change
Expand Up @@ -4,3 +4,5 @@ CONFIG_32BIT=y
# CONFIG_PORTABLE is not set
CONFIG_NONPORTABLE=y
CONFIG_CGROUPS=n
CONFIG_STRICT_KERNEL_RWX=n
CONFIG_STRICT_MODULE_RWX=n

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