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FromRobert Hancock <>
SubjectRe: jfs problem
DateMon, 17 Nov 2008 23:47:47 -0600
Andrey Vul wrote:
> I have a JFS problem occuring randomly. The hardware that this happens
> on is an Asus M50VM laptop.
> 
> /dev/sda5 is mounted on /
> 
> Kernel version is 2.6.27.4 with dm-bbr (device mapper - bad block
> relocation), fbcondecor, and squashfs patches.
> 
> dmesg:
> [  130.405776] DMAR:[DMA Write] Request device [00:1f.2] fault addr fff9f000
> [  130.405780] DMAR:[fault reason 05] PTE Write access is not set
> [  130.405828] ERROR: (device sda5): diRead: i_ino != di_number
> [  130.406133] ERROR: (device sda5): remounting filesystem as read-only
> [  130.406136]
> [  130.406146] jfs_lookup: iget failed on inum 188808
> [  131.212899] DMAR:[DMA Write] Request device [00:1f.2] fault addr fff9f000
> [  131.212903] DMAR:[fault reason 05] PTE Write access is not set
> [  131.212962] ERROR: (device sda5): stack overrun in dtSearch!
> [  131.212968] btstack dump:
> [  131.212972] bn = 0, index = 0
> [  131.212975] bn = 5402c5, index = 0
> [  131.212979] bn = 0, index = 0
> [  131.212982] bn = 5402c5, index = 0
> [  131.212985] bn = 0, index = 0
> [  131.212988] bn = 5402c5, index = 0
> [  131.212991] bn = 0, index = 0
> [  131.212995] bn = fffffffffffffff4, index = 7336
> [  131.213015] jfs_lookup: dtSearch returned -5

This doesn't look like any JFS problem, more like DMAR is blocking a 
write request from a controller to an area that it doesn't think should 
be writable. Can you post dmesg and lspci -vv from bootup?



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