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Groups > linux.kernel > #1512815
| From | Linus Torvalds <torvalds@linux-foundation.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: bio linked list corruption. |
| Date | 2016-10-31 20:40 +0100 |
| Message-ID | <syqB3-6Fs-1@gated-at.bofh.it> (permalink) |
| References | (6 earlier) <swFuy-226-9@gated-at.bofh.it> <swG7g-2fy-21@gated-at.bofh.it> <swG7g-2fy-23@gated-at.bofh.it> <swG7g-2fy-19@gated-at.bofh.it> <sypYl-6cx-15@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Mon, Oct 31, 2016 at 11:55 AM, Dave Jones <davej@codemonkey.org.uk> wrote: > > BUG: Bad page state in process kworker/u8:12 pfn:4e0e39 > page:ffffea0013838e40 count:0 mapcount:0 mapping:ffff8804a20310e0 index:0x100c > flags: 0x400000000000000c(referenced|uptodate) > page dumped because: non-NULL mapping Hmm. So this seems to be btrfs-specific, right? I searched for all your "non-NULL mapping" cases, and they all seem to have basically the same call trace, with some work thread doing writeback and going through btrfs_writepages(). Sounds like it's a race with either fallocate hole-punching or truncate. I'm not seeing it, but I suspect it's btrfs, since DaveJ clearly ran other filesystems too but I am not seeing this backtrace for anything else. Linus
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Re: bio linked list corruption. Dave Jones <davej@codemonkey.org.uk> - 2016-10-31 20:00 +0100
Re: bio linked list corruption. Linus Torvalds <torvalds@linux-foundation.org> - 2016-10-31 20:40 +0100
Re: btrfs btree_ctree_super fault Dave Jones <davej@codemonkey.org.uk> - 2016-11-06 18:00 +0100
Re: btrfs btree_ctree_super fault Dave Jones <davej@codemonkey.org.uk> - 2016-11-08 16:00 +0100
Re: btrfs btree_ctree_super fault Dave Jones <davej@codemonkey.org.uk> - 2016-11-10 15:40 +0100
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