Messages in this thread | | | Date | Thu, 15 Dec 2022 15:07:46 +0200 | Subject | Re: BUG: unable to handle kernel paging request in z_erofs_decompress_queue | From | Tudor Ambarus <> |
| |
On 15.12.2022 14:58, Tudor Ambarus wrote: > Hi, Gao, Chao, Yue, Jeffle, all, > > Syzbot reported a bug at [1] that is reproducible in upstream kernel > since > commit 47e4937a4a7c ("erofs: move erofs out of staging") > > and up to (inclusively) > commit 2bfab9c0edac ("erofs: record the longest decompressed size in > this round") > > The first commit that makes this bug go away is: > commit 267f2492c8f7 ("erofs: introduce multi-reference pclusters > (fully-referenced)") > Although, this commit looks like new support and not like an explicit > bug fix. > > I'd like to fix the lts kernels. I'm happy to try any suggestions or do > some tests. Please let me know if the bug rings a bell. >
There's something else that may help. I enabled CONFIG_EROFS_FS_DEBUG while at commit 2bfab9c0edac ("erofs: record the longest decompressed size in this round") and I got the following: https://termbin.com/4bm8
Cheers, ta
> [1] > https://syzkaller.appspot.com/bug?id=a9b56d324d0de9233ad80633826fac76836d792a
| |