Re: kernel BUG at fs/btrfs/extent_io.c:1884!
From: Stefan Behrens <hidden>
Date: 2012-09-21 04:57:35
On 09/21/2012 05:46, Marc MERLIN wrote:
Oh my, now I'm trying again with a new drive, and a big cp from an
existing array to a new one dies with:
[32042.079411] ------------[ cut here ]------------
[32042.085799] kernel BUG at fs/btrfs/extent_io.c:1884!
[32042.092528] invalid opcode: 0000 [#1] PREEMPT SMP
[32042.099227] CPU 1
[32042.101095] Modules linked in:[32042.105950] raid456 async_raid6_recov async
_pq raid6_pq async_xor xor async_memcpy async_tx ppdev lp tun autofs4 kl5kusb105
ftdi_sio keyspan nfsd nfs lockd fscache auth_rpcgss nfs_acl sunrpc rc_ati_x10 s
nd_timer i915 usbserial snd drm_kms_helper eeepc_wmi drm ati_remote asus_wmi rc_
core sparse_keymap
int repair_io_failure(struct btrfs_mapping_tree *map_tree, u64 start,
u64 length, u64 logical, struct page *page,
int mirror_num)
{
struct bio *bio;
struct btrfs_device *dev;
DECLARE_COMPLETION_ONSTACK(compl);
u64 map_length = 0;
u64 sector;
struct btrfs_bio *bbio = NULL;
int ret;
BUG_ON(!mirror_num); <<<<<This was fixed with commit c0901581ad077004145c9ee80e843fba71c100b8 and is included in Linux 3.6 RC1.