On 07/15/2016 03:35 PM, Chris Mason wrote:
On 07/07/2016 06:24 AM, Gabriel C wrote:
Hi,
while running thunderbird on linux 4.6.3 and 4.7.0-rc6 ( didn't tested
other versions )
I trigger the following :
[ 6393.305675] WARNING: CPU: 6 PID: 5870 at fs/btrfs/inode.c:9306
btrfs_destroy_inode+0x22e/0x2a0 [btrfs]
Every time I've reproduced this, I've hit a warning in extent-tree.c
about trying to decrement bytes_may_use too far. Then I get enospc
on every operation.
Josef fixed a few corner cases here with his new enospc changes, and I'm
not able to trigger (yet) with those applied. Dave Sterba has them all
in his for-next branch:
git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux.git for-next
Can you please try that on top of v4.7-rc7
A few hours later and it reproduced on this kernel too. What must be
happening is we're freeing too many bytes from bytes_may_use.
I'll get tracing in and nail it down.
-chris
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