I have some strange kernel panic with gcc 3.4.2 + binutils 2.15.
Address of some string constant seems broken.
For example, scsi_init_procfs() is compled to following code.
int __init scsi_init_procfs(void)
{
struct proc_dir_entry *pde;
proc_scsi = proc_mkdir("scsi", NULL);
if (!proc_scsi)
goto err1;
...
803d47f4 <scsi_init_procfs> 27bdffe8 addiu sp,sp,-24
803d47f8 <scsi_init_procfs+0x4> afb00010 sw s0,16(sp)
803d47fc <scsi_init_procfs+0x8> 3c108030 lui s0,0x8030
803d4800 <scsi_init_procfs+0xc> 2604c7e0 addiu a0,s0,-14368
803d4804 <scsi_init_procfs+0x10> afbf0014 sw ra,20(sp)
803d4808 <scsi_init_procfs+0x14> 0c03536f jal 800d4dbc <proc_mkdir>
803d480c <scsi_init_procfs+0x18> 00002821 move a1,zero
Then, 0x80300000-14368 = 0x802fc7e0 must contain a string "scsi". But
when I loaded the kernel (ELF or binary), there is obvious wrong data.
802fc7e0 74 20 77 72 69 74 65 20 43 54 52 20 77 68 69 6c t write CTR whil
802fc7f0 65 20 72 65 67 69 73 74 65 72 69 6e 67 2e 0a 00 e registering...
802fc800 3c 36 3e 73 65 72 69 6f 3a 20 69 38 30 34 32 20 <6>serio: i8042
802fc810 25 73 20 70 6f 72 74 20 61 74 20 25 23 6c 78 2c %s port at %#lx,
If I compiled kernel with -fno-merge-constants, this problem does not
happen. gcc 3.3.4 + bintuils 2.15 also works fine.
Does anyone see this sort of problem?
---
Atsushi Nemoto
