Re: Lockup in BTRFS_IOC_CLONE/Kernel 4.2.0-rc5

2015-10-21 Thread Filipe Manana
On Fri, Aug 7, 2015 at 5:01 AM, Liu Bo wrote: > Hi, > > On Wed, Aug 05, 2015 at 10:28:05AM +0200, Elias Probst wrote: >> I can reproduce a hard btrfs lockup (process issuing the ioctl() is in >> D-state, same goes for btrfs-transacti process) on Kernel 4.2.0-rc5. >> >> I had the same issue on 4.1,

Re: Lockup in BTRFS_IOC_CLONE/Kernel 4.2.0-rc5

2015-08-15 Thread Elias Probst
On 08/08/2015 01:29 AM, Elias Probst wrote: > On 08/07/2015 06:01 AM, Liu Bo wrote: >> Could you do 'echo w > /proc/sysrq-trigger' to gather the whole hang call >> stack? > > Thanks a lot for the feedback. Full call stack output is attached > (pasting inline makes no sense due to the size of 2423

Re: Lockup in BTRFS_IOC_CLONE/Kernel 4.2.0-rc5

2015-08-07 Thread Elias Probst
On 08/07/2015 06:01 AM, Liu Bo wrote: > Could you do 'echo w > /proc/sysrq-trigger' to gather the whole hang call > stack? Thanks a lot for the feedback. Full call stack output is attached (pasting inline makes no sense due to the size of 2423 lines/135k). In case VGER will strip attachments of

Re: Lockup in BTRFS_IOC_CLONE/Kernel 4.2.0-rc5

2015-08-06 Thread Liu Bo
Hi, On Wed, Aug 05, 2015 at 10:28:05AM +0200, Elias Probst wrote: > I can reproduce a hard btrfs lockup (process issuing the ioctl() is in > D-state, same goes for btrfs-transacti process) on Kernel 4.2.0-rc5. > > I had the same issue on 4.1, so it's unlikely a regression introduced in > 4.2. >

Lockup in BTRFS_IOC_CLONE/Kernel 4.2.0-rc5

2015-08-05 Thread Elias Probst
I can reproduce a hard btrfs lockup (process issuing the ioctl() is in D-state, same goes for btrfs-transacti process) on Kernel 4.2.0-rc5. I had the same issue on 4.1, so it's unlikely a regression introduced in 4.2. ## With the following steps, I can reproduce the problem: 1. Create a new clea