powerpc/fsl-booke: Fix the miss interrupt restore
The commit
e5e774d8833de1a0037be2384efccadf16935675
powerpc/fsl-booke: Fix problem with _tlbil_va being interrupted
introduce one issue. that casue the problem like this:
Kernel BUG at
c00b19fc [verbose debug info unavailable]
Oops: Exception in kernel mode, sig: 5 [#1]
MPC8572 DS
Modules linked in:
NIP:
c00b19fc LR:
c00b1c34 CTR:
c0064e88
REGS:
ef02b7b0 TRAP: 0700 Not tainted (
2.6.28-rc8-00057-g1bda712)
MSR:
00021000 <ME> CR:
44048028 XER:
20000000
TASK =
ef02c000[1] 'init' THREAD:
ef02a000
GPR00:
00000001 ef02b860 ef02c000 eec201a0 c0dec2c0 00000000 000078a1 00000400
GPR08:
c00b4e40 000078a1 c048ec00 a1780000 44048028 ecd26917 00000001 ef02b948
GPR16:
ffffffea 0000020c 00000000 00000000 00000003 0000000a 00000000 000078a1
GPR24:
eec201a0 00000000 ed849000 00000400 ef02b95c 00000001 ef02b978 ef02b984
NIP [
c00b19fc] __find_get_block+0x24/0x238
LR [
c00b1c34] __getblk+0x24/0x2a0
Call Trace:
[
ef02b860] [
c017b768] generic_make_request+0x290/0x328 (unreliable)
[
ef02b8b0] [
c00b1c34] __getblk+0x24/0x2a0
[
ef02b910] [
c00b4ae4] __bread+0x14/0xf8
[
ef02b920] [
c00fc228] ext2_get_branch+0xf0/0x138
[
ef02b940] [
c00fcc88] ext2_get_block+0xb8/0x828
[
ef02ba00] [
c00bbdc8] do_mpage_readpage+0x188/0x808
[
ef02bac0] [
c00bc5b4] mpage_readpages+0xec/0x144
[
ef02bb50] [
c00fba38] ext2_readpages+0x24/0x34
[
ef02bb60] [
c006ade0] __do_page_cache_readahead+0x150/0x230
[
ef02bbb0] [
c0064bdc] filemap_fault+0x31c/0x3e0
[
ef02bbf0] [
c00728b8] __do_fault+0x60/0x5b0
[
ef02bc50] [
c0011e0c] do_page_fault+0x2d8/0x4c4
[
ef02bd10] [
c000ed90] handle_page_fault+0xc/0x80
[
ef02bdd0] [
c00c7adc] set_brk+0x74/0x9c
[
ef02bdf0] [
c00c9274] load_elf_binary+0x70c/0x1180
[
ef02be70] [
c00945f0] search_binary_handler+0xa8/0x274
[
ef02bea0] [
c0095818] do_execve+0x19c/0x1d4
[
ef02bed0] [
c000766c] sys_execve+0x58/0x84
[
ef02bef0] [
c000e950] ret_from_syscall+0x0/0x3c
[
ef02bfb0] [
c009c6fc] sys_dup+0x24/0x6c
[
ef02bfc0] [
c0001e04] init_post+0xb0/0xf0
[
ef02bfd0] [
c046c1ac] kernel_init+0xcc/0xf4
[
ef02bff0] [
c000e6d0] kernel_thread+0x4c/0x68
Instruction dump:
4bffffa4 813f000c 4bffffac 9421ffb0 7c0802a6 7d800026 90010054 bf210034
91810030 7c0000a6 68008000 54008ffe <
0f000000>
3d20c04e 3b29ffb8 38000008
The issue was the beqlr returns early but we haven't reenabled interrupts.
Signed-off-by: Dave Liu <daveliu@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
projects / linux-2.6-omap-h63xx.git / commit