https://bugzilla.kernel.org/show_bug.cgi?id=89131 Bug ID: 89131 Summary: Hangs when checking torrent through libtorrent; kernel BUG at mm/iov_iter.c:219! Product: File System Version: 2.5 Kernel Version: 3.17.3 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: blocking Priority: P1 Component: ext4 Assignee: fs_ext4@xxxxxxxxxxxxxxxxxxxx Reporter: kokoko3k@xxxxxxxxx Regression: No Created attachment 159351 --> https://bugzilla.kernel.org/attachment.cgi?id=159351&action=edit Backtraces from both the systems When i use qbittorrent (libtorrent) by explicitely disable the os cache and do the hash-check on a specific torrent data (it does not happen on all of the torrents), linux hangs leaving me no choice but to reboot somehow. I managed to get two backtraces from completely different systems (an e7300 desktop and an ivybridge laptop), they're attached. As a reference, i started to talk about the issue here: https://github.com/qbittorrent/qBittorrent/issues/2200#issuecomment-64951598 ...seems the issue is given by the use of the O_DIRECT flag -- You are receiving this mail because: You are watching the assignee of the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html