Re: 2.6.18-rc3-mm2 - ext3 locking issue?

From: Valdis . Kletnieks
Date: Tue Aug 15 2006 - 19:36:28 EST


On Wed, 09 Aug 2006 15:06:35 EDT, Valdis.Kletnieks@xxxxxx said:
> Yum managed to get wedged: 'echo t > /proc/sysrq-trigger' says:
>
> [ 4514.840000] yum D D5C32AA0 0 4747 4430 (NOTLB)
> [ 4514.840000] d5c3dda4 d5c3dd78 00000007 d5c32aa0 bd3ddd00 00000338 00000000 d5c32bc0
> [ 4514.840000] c1601628 d5c3dd9c 64600300 0000001f d5c3ddd8 d5c3ddd8 c1601628 d5c3ddac
> [ 4514.840000] c034fef8 d5c3ddb4 c0136e8e d5c3ddcc c0350026 c0136e58 d5c3ddd8 00000000
> [ 4514.840000] Call Trace:
> [ 4514.840000] [<c034fef8>] io_schedule+0x25/0x44
> [ 4514.840000] [<c0136e8e>] sync_page+0x36/0x3a
> [ 4514.840000] [<c0350026>] __wait_on_bit_lock+0x30/0x58
> [ 4514.840000] [<c0136e44>] __lock_page+0x51/0x59
> [ 4514.840000] [<c013f099>] truncate_inode_pages_range+0x1de/0x230
> [ 4514.840000] [<c013f0f7>] truncate_inode_pages+0xc/0x11
> [ 4514.840000] [<c018ea12>] ext3_delete_inode+0x16/0xbd
> [ 4514.840000] [<c016798f>] generic_delete_inode+0xb6/0x130
> [ 4514.840000] [<c0167a1b>] generic_drop_inode+0x12/0x166
> [ 4514.840000] [<c01673f1>] iput+0x67/0x6a
> [ 4514.840000] [<c0165662>] dentry_iput+0x97/0xcc
> [ 4514.840000] [<c016613d>] dput+0x183/0x19c
> [ 4514.840000] [<c015f64f>] sys_renameat+0x17a/0x1d3
> [ 4514.840000] [<c015f6ba>] sys_rename+0x12/0x14
> [ 4514.840000] [<c0102849>] sysenter_past_esp+0x56/0x79

Well, after a detour into hardware issues (a dying fan ended up escalating
into swapping a motherboard), I built 2.6.18-rc4-mm1 - unable to replicate
the 'yum' hang on that. Somehow, I'm not feeling very motivated to do a
bisect of -rc3-mm2 to find it, unless somebody thinks we should track it down
just in case it's just in hiding....

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