bisecting fixing commit since b98aebd298246df37b472c52a2ee1023256d02e3
building syzkaller on 04ca72cd45348daab9d896bbec8ea4c2d13455ac
testing commit b98aebd298246df37b472c52a2ee1023256d02e3 with gcc (GCC) 8.1.0
kernel signature: 7e3790edcd3955c8e9c403fdecf182c59854e288504a5864d77690d151486c8f
all runs: crashed: general protection fault in ip6_dst_destroy
testing current HEAD ab9dfda232481dcfaf549ce774004d116fc80c13
testing commit ab9dfda232481dcfaf549ce774004d116fc80c13 with gcc (GCC) 8.1.0
kernel signature: 0d7dd1a605e3402906dff33c03ae3402a94764f95932914ee60a6f8210f08469
all runs: crashed: general protection fault in ip6_dst_destroy
revisions tested: 2, total time: 27m53.564045376s (build: 19m38.824568965s, test: 6m39.961442142s)
the crash still happens on HEAD
commit msg: Linux 4.14.180
crash: general protection fault in ip6_dst_destroy
team0: Port device team_slave_1 added
8021q: adding VLAN 0 to HW filter on device bond0
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 7 Comm: ksoftirqd/0 Not tainted 4.14.180-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready
task: ffff8880a9cce1c0 task.stack: ffff8880a9ce0000
RIP: 0010:__lock_acquire+0x1d5/0x4500 kernel/locking/lockdep.c:3369
RSP: 0018:ffff8880a9ce79c0 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000003 RSI: 0000000000000000 RDI: ffffffff87916980
RBP: ffff8880a9ce7b90 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: ffff8880a9cce1c0 R12: 0000000000000018
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready
FS:  0000000000000000(0000) GS:ffff8880aee00000(0000) knlGS:0000000000000000
IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffba7fec50 CR3: 0000000095317000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network
hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network
 lock_acquire+0x173/0x400 kernel/locking/lockdep.c:3998
IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
 _raw_spin_lock_bh+0x31/0x40 kernel/locking/spinlock.c:176
 spin_lock_bh include/linux/spinlock.h:322 [inline]
 rt6_uncached_list_del net/ipv6/route.c:144 [inline]
 ip6_dst_destroy+0x100/0x380 net/ipv6/route.c:402
 dst_destroy+0xb2/0x2d0 net/core/dst.c:129
 dst_destroy_rcu+0xd/0x10 net/core/dst.c:151
 __rcu_reclaim kernel/rcu/rcu.h:195 [inline]
 rcu_do_batch kernel/rcu/tree.c:2699 [inline]
 invoke_rcu_callbacks kernel/rcu/tree.c:2962 [inline]
 __rcu_process_callbacks kernel/rcu/tree.c:2929 [inline]
 rcu_process_callbacks+0x7e0/0x11e0 kernel/rcu/tree.c:2946
IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready
 __do_softirq+0x246/0x9b0 kernel/softirq.c:288
8021q: adding VLAN 0 to HW filter on device batadv0
 run_ksoftirqd+0x92/0x1a0 kernel/softirq.c:670
 smpboot_thread_fn+0x553/0x850 kernel/smpboot.c:164
IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready
IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready
 kthread+0x338/0x400 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Code: 00 00 00 00 8b 84 24 98 00 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 f2 30 00 00 49 81 3c 24 60 52 7b 88 0f 84 30 
RIP: __lock_acquire+0x1d5/0x4500 kernel/locking/lockdep.c:3369 RSP: ffff8880a9ce79c0
---[ end trace 0d50d9cd69538cb8 ]---