Hugh Dickins wrote:
On Tue, 14 Nov 2006, Mel Gorman wrote:
2.6.19-rc5-mm2
Am seeing errors with systems using ext2. First machine is a plan old x86
using initramfs. Console output looks like;
...
Configuring network interfaces...BUG: soft lockup detected on CPU#3!
...
[<c01b3b80>] ext2_try_to_allocate+0xdb/0x152
[<c01b3e72>] ext2_try_to_allocate_with_rsv+0x4b/0x1b2
I've not investigated yet what patches might be at fault.
I expect you'll find it's
ext2-reservations-bring-ext2-reservations-code-in-line-with-latest-ext3.patch
which gets stuck in a loop there for me too: back it out and all seems fine.
It's not obvious which part of the patch is to blame: mostly it's
cleanup, but a few variables do change size: I'm currently narrowing
down to where a fix is needed.
Humpf. that was meant to be one of those "so obvious I can't screw it
up" patches.
typedef unsigned long ext2_fsblk_t;
typedef int ext2_grpblk_t;
in ext2_alloc_blocks we do change from "unsigned long long" to
"unsigned long" for new_blocks[], but akpm thinks that was garbage
before (same for ext2_alloc_branch's current_block)
The ext2_grpblk_t ones all look innocuous.
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