Messages in this thread | | | Date | Fri, 06 Apr 2018 00:55:01 -0700 | Subject | Re: WARNING in xfrm6_tunnel_net_exit | From | syzbot <> |
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syzbot has found reproducer for the following crash on upstream commit 3c8ba0d61d04ced9f8d9ff93977995a9e4e96e91 (Sat Mar 31 01:52:36 2018 +0000) kernel.h: Retain constant expression output for max()/min() syzbot dashboard link: https://syzkaller.appspot.com/bug?extid=777bf170a89e7b326405
So far this crash happened 10982 times on linux-next, mmots, net-next, upstream. syzkaller reproducer: https://syzkaller.appspot.com/x/repro.syz?id=5399809707999232 Raw console output: https://syzkaller.appspot.com/x/log.txt?id=4550974920196096 Kernel config: https://syzkaller.appspot.com/x/.config?id=-1647968177339044852 compiler: gcc (GCC) 8.0.1 20180301 (experimental)
IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+777bf170a89e7b326405@syzkaller.appspotmail.com It will help syzbot understand when the bug is fixed.
IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 WARNING: CPU: 0 PID: 180 at net/ipv6/xfrm6_tunnel.c:345 xfrm6_tunnel_net_exit+0x2c0/0x4f0 net/ipv6/xfrm6_tunnel.c:345 Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 180 Comm: kworker/u4:4 Not tainted 4.16.0+ #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b9/0x29f lib/dump_stack.c:53 panic+0x22f/0x4de kernel/panic.c:183 __warn.cold.8+0x163/0x1a3 kernel/panic.c:547 report_bug+0x252/0x2d0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] do_error_trap+0x1bc/0x470 arch/x86/kernel/traps.c:296 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:991 RIP: 0010:xfrm6_tunnel_net_exit+0x2c0/0x4f0 net/ipv6/xfrm6_tunnel.c:345 RSP: 0018:ffff8801d96373d8 EFLAGS: 00010293 RAX: ffff8801d961c080 RBX: ffff8801b0e999a0 RCX: ffffffff866b08c6 RDX: 0000000000000000 RSI: ffffffff866b08d0 RDI: 0000000000000007 RBP: ffff8801d96374f8 R08: ffff8801d961c080 R09: ffffed003b6046c2 R10: 0000000000000003 R11: 0000000000000003 R12: 000000000000007c R13: ffffed003b2c6e82 R14: ffff8801d96374d0 R15: ffff8801b6185f80 ops_exit_list.isra.7+0xb0/0x160 net/core/net_namespace.c:152 cleanup_net+0x51d/0xb20 net/core/net_namespace.c:523 process_one_work+0xc1e/0x1b50 kernel/workqueue.c:2145 worker_thread+0x1cc/0x1440 kernel/workqueue.c:2279 kthread+0x345/0x410 kernel/kthread.c:238 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:411 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..
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