Messages in this thread | | | Date | Thu, 19 Apr 2018 07:52:01 -0700 | Subject | unregister_netdevice: waiting for DEV to become free | From | syzbot <> |
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Hello,
syzbot hit the following crash on upstream commit 87ef12027b9b1dd0e0b12cf311fbcb19f9d92539 (Wed Apr 18 19:48:17 2018 +0000) Merge tag 'ceph-for-4.17-rc2' of git://github.com/ceph/ceph-client syzbot dashboard link: https://syzkaller.appspot.com/bug?extid=2dfb68e639f0621b19fb
So far this crash happened 5 times on upstream. Unfortunately, I don't have any reproducer for this crash yet. Raw console output: https://syzkaller.appspot.com/x/log.txt?id=5531107864870912 Kernel config: https://syzkaller.appspot.com/x/.config?id=1808800213120130118 compiler: gcc (GCC) 8.0.1 20180413 (experimental)
IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+2dfb68e639f0621b19fb@syzkaller.appspotmail.com It will help syzbot understand when the bug is fixed. See footer for details. If you forward the report, please keep this part and the footer.
connbytes_mt_check: 1 callbacks suppressed xt_connbytes: cannot load conntrack support for proto=7 netlink: 17 bytes leftover after parsing attributes in process `syz-executor6'. unregister_netdevice: waiting for lo to become free. Usage count = 3 netlink: 17 bytes leftover after parsing attributes in process `syz-executor6'. xt_connbytes: cannot load conntrack support for proto=7 netlink: 17 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 17 bytes leftover after parsing attributes in process `syz-executor6'. xt_connbytes: cannot load conntrack support for proto=7 netlink: 17 bytes leftover after parsing attributes in process `syz-executor6'. xt_connbytes: cannot load conntrack support for proto=7 netlink: 17 bytes leftover after parsing attributes in process `syz-executor6'. xt_connbytes: cannot load conntrack support for proto=7 netlink: 17 bytes leftover after parsing attributes in process `syz-executor6'. kernel msg: ebtables bug: please report to author: Entries_size never zero xt_connbytes: cannot load conntrack support for proto=7 netlink: 17 bytes leftover after parsing attributes in process `syz-executor6'. xt_connbytes: cannot load conntrack support for proto=7 netlink: 17 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 17 bytes leftover after parsing attributes in process `syz-executor6'. xt_connbytes: cannot load conntrack support for proto=7 netlink: 17 bytes leftover after parsing attributes in process `syz-executor6'. xt_connbytes: cannot load conntrack support for proto=7 netlink: 17 bytes leftover after parsing attributes in process `syz-executor6'. xt_connbytes: cannot load conntrack support for proto=7 netlink: 17 bytes leftover after parsing attributes in process `syz-executor6'. xt_connbytes: cannot load conntrack support for proto=7 netlink: 17 bytes leftover after parsing attributes in process `syz-executor6'. xt_connbytes: cannot load conntrack support for proto=7 netlink: 17 bytes leftover after parsing attributes in process `syz-executor6'. xt_connbytes: cannot load conntrack support for proto=7 netlink: 17 bytes leftover after parsing attributes in process `syz-executor6'. xt_connbytes: cannot load conntrack support for proto=7 netlink: 17 bytes leftover after parsing attributes in process `syz-executor6'. xt_connbytes: cannot load conntrack support for proto=7 netlink: 17 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 17 bytes leftover after parsing attributes in process `syz-executor6'. xt_connbytes: cannot load conntrack support for proto=7 netlink: 17 bytes leftover after parsing attributes in process `syz-executor6'. xt_connbytes: cannot load conntrack support for proto=7 nla_parse: 1 callbacks suppressed netlink: 17 bytes leftover after parsing attributes in process `syz-executor6'. xt_connbytes: cannot load conntrack support for proto=7 netlink: 17 bytes leftover after parsing attributes in process `syz-executor6'. xt_connbytes: cannot load conntrack support for proto=7
--- This bug is generated by a dumb bot. It may contain errors. See https://goo.gl/tpsmEJ for details. Direct all questions to syzkaller@googlegroups.com.
syzbot will keep track of this bug report. If you forgot to add the Reported-by tag, once the fix for this bug is merged into any tree, please reply to this email with: #syz fix: exact-commit-title To mark this as a duplicate of another syzbot report, please reply with: #syz dup: exact-subject-of-another-report If it's a one-off invalid bug report, please reply with: #syz invalid Note: if the crash happens again, it will cause creation of a new bug report. Note: all commands must start from beginning of the line in the email body.
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