From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751793AbeEEPrK (ORCPT ); Sat, 5 May 2018 11:47:10 -0400 Received: from mail-it0-f71.google.com ([209.85.214.71]:36710 "EHLO mail-it0-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751118AbeEEPrD (ORCPT ); Sat, 5 May 2018 11:47:03 -0400 X-Google-Smtp-Source: AB8JxZpfaMZ8LzdNvtqCxhTtaWg5FURH8xMTJUhMNT8zA1mzzxJNy1IbRpMZgIbrxeixhSq8o+zDfGLOzh45AEUB2dL7WI0Jm83N MIME-Version: 1.0 Date: Sat, 05 May 2018 08:47:02 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000000390eb056b77596d@google.com> Subject: WARNING in kernfs_add_one From: syzbot To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, tj@kernel.org Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: 8fb11a9a8d51 net/ipv6: rename rt6_next to fib6_next git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=14b27237800000 kernel config: https://syzkaller.appspot.com/x/.config?x=c416c61f3cd96be dashboard link: https://syzkaller.appspot.com/bug?extid=df47f81c226b31d89fb1 compiler: gcc (GCC) 8.0.1 20180413 (experimental) syzkaller repro:https://syzkaller.appspot.com/x/repro.syz?x=172fb3e7800000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16552e57800000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+df47f81c226b31d89fb1@syzkaller.appspotmail.com RBP: 00007fff808f3e10 R08: 0000000000000002 R09: 00007fff80003534 R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff R13: 0000000000000006 R14: 0000000000000000 R15: 0000000000000000 ------------[ cut here ]------------ kernfs: ns required in 'ieee80211' for 'phy3' WARNING: CPU: 0 PID: 4538 at fs/kernfs/dir.c:759 kernfs_add_one+0x406/0x4d0 fs/kernfs/dir.c:758 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 4538 Comm: syz-executor486 Not tainted 4.17.0-rc3+ #33 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1b9/0x294 lib/dump_stack.c:113 panic+0x22f/0x4de kernel/panic.c:184 __warn.cold.8+0x163/0x1b3 kernel/panic.c:536 report_bug+0x252/0x2d0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] do_error_trap+0x1de/0x490 arch/x86/kernel/traps.c:296 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:992 RIP: 0010:kernfs_add_one+0x406/0x4d0 fs/kernfs/dir.c:758 RSP: 0018:ffff8801ca9eece0 EFLAGS: 00010286 RAX: 000000000000002d RBX: ffffffff87d5cee0 RCX: ffffffff8160ba7d RDX: 0000000000000000 RSI: ffffffff81610731 RDI: ffff8801ca9ee840 RBP: ffff8801ca9eed20 R08: ffff8801d9538500 R09: 0000000000000006 R10: ffff8801d9538500 R11: 0000000000000000 R12: ffff8801ad1cb6c0 R13: ffffffff885da640 R14: 0000000000000020 R15: 0000000000000000 kernfs_create_link+0x112/0x180 fs/kernfs/symlink.c:41 sysfs_do_create_link_sd.isra.2+0x90/0x130 fs/sysfs/symlink.c:43 sysfs_do_create_link fs/sysfs/symlink.c:79 [inline] sysfs_create_link+0x65/0xc0 fs/sysfs/symlink.c:91 device_add_class_symlinks drivers/base/core.c:1612 [inline] device_add+0x7a0/0x16d0 drivers/base/core.c:1810 wiphy_register+0x178a/0x2430 net/wireless/core.c:806 ieee80211_register_hw+0x13cd/0x35d0 net/mac80211/main.c:1047 mac80211_hwsim_new_radio+0x1d9b/0x3410 drivers/net/wireless/mac80211_hwsim.c:2772 hwsim_new_radio_nl+0x7a7/0xa60 drivers/net/wireless/mac80211_hwsim.c:3246 genl_family_rcv_msg+0x889/0x1120 net/netlink/genetlink.c:599 genl_rcv_msg+0xc6/0x170 net/netlink/genetlink.c:624 netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2448 genl_rcv+0x28/0x40 net/netlink/genetlink.c:635 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x58b/0x740 net/netlink/af_netlink.c:1336 netlink_sendmsg+0x9f0/0xfa0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:629 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:639 ___sys_sendmsg+0x805/0x940 net/socket.c:2117 __sys_sendmsg+0x115/0x270 net/socket.c:2155 __do_sys_sendmsg net/socket.c:2164 [inline] __se_sys_sendmsg net/socket.c:2162 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2162 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4404c9 RSP: 002b:00007fff808f3e08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004404c9 RDX: 0000000000000000 RSI: 0000000020b3dfc8 RDI: 0000000000000005 RBP: 00007fff808f3e10 R08: 0000000000000002 R09: 00007fff80003534 R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff R13: 0000000000000006 R14: 0000000000000000 R15: 0000000000000000 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds.. --- This bug is generated by a bot. 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