bisecting fixing commit since 14b58326976de6ef3998eefec1dd7f8b38b97a75
building syzkaller on 7adc7b652ac0426d2f2006dda89a021bb1747e7f
testing commit 14b58326976de6ef3998eefec1dd7f8b38b97a75 with gcc (GCC) 8.1.0
kernel signature: d2266d0a3ca4ca65ad721fb0245285609c9232a564d703d2a9862ac292a16e48
all runs: crashed: INFO: trying to register non-static key in skb_dequeue
testing current HEAD 2f166cdcf8a92fcf85524f2b5526cb28e16f0a60
testing commit 2f166cdcf8a92fcf85524f2b5526cb28e16f0a60 with gcc (GCC) 8.1.0
kernel signature: f30414a33ee71694958c59ea560a9e86fec88cf00e15f84d69957b7021b0564d
all runs: crashed: INFO: trying to register non-static key in skb_dequeue
revisions tested: 2, total time: 28m41.890313373s (build: 21m7.661006873s, test: 6m5.32353718s)
the crash still happens on HEAD
commit msg: Linux 4.14.196
crash: INFO: trying to register non-static key in skb_dequeue
batman_adv: batadv0: Interface activated: batadv_slave_1
IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
Bluetooth: hci0 command 0x0409 tx timeout
INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 0 PID: 7977 Comm: syz-executor.5 Not tainted 4.14.196-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x14b/0x1f1 lib/dump_stack.c:58
 register_lock_class+0x3bd/0x19a0 kernel/locking/lockdep.c:768
 __lock_acquire+0x18b/0x42d0 kernel/locking/lockdep.c:3378
 lock_acquire+0x17e/0x3e0 kernel/locking/lockdep.c:3998
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x99/0xd0 kernel/locking/spinlock.c:160
 skb_dequeue+0x1e/0x1a0 net/core/skbuff.c:2816
 skb_queue_purge+0x1a/0x30 net/core/skbuff.c:2854
 l2cap_chan_del+0x4c6/0x790 net/bluetooth/l2cap_core.c:634
 l2cap_chan_close+0x338/0x7e0 net/bluetooth/l2cap_core.c:754
 l2cap_sock_shutdown+0x7ab/0xbb0 net/bluetooth/l2cap_sock.c:1160
 l2cap_sock_release+0x5a/0x170 net/bluetooth/l2cap_sock.c:1202
 __sock_release+0xc2/0x2a0 net/socket.c:602
 sock_close+0x10/0x20 net/socket.c:1139
 __fput+0x232/0x740 fs/file_table.c:210
 ____fput+0x9/0x10 fs/file_table.c:244
 task_work_run+0xe5/0x170 kernel/task_work.c:113
 get_signal+0x1460/0x1ab0 kernel/signal.c:2234
 do_signal+0x7f/0x18b0 arch/x86/kernel/signal.c:814
 exit_to_usermode_loop+0x11e/0x190 arch/x86/entry/common.c:160
 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
 do_syscall_64+0x416/0x5b0 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45ce69
RSP: 002b:00007f8307f17c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: fffffffffffffffc RBX: 0000000000002100 RCX: 000000000045ce69
RDX: 000000000000000e RSI: 0000000020000040 RDI: 0000000000000004
RBP: 000000000118c000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bfcc
R13: 00007ffe835452af R14: 00007f8307f189c0 R15: 000000000118bfcc
Bluetooth: hci1 command 0x0409 tx timeout
Bluetooth: hci2 command 0x0409 tx timeout
Bluetooth: hci4 command 0x0409 tx timeout
Bluetooth: hci3 command 0x0409 tx timeout
Bluetooth: hci5 command 0x0409 tx timeout
Bluetooth: hci0 command 0x041b tx timeout
Bluetooth: hci1 command 0x041b tx timeout
Bluetooth: hci2 command 0x041b tx timeout
Bluetooth: hci4 command 0x041b tx timeout
Bluetooth: hci5 command 0x041b tx timeout
Bluetooth: hci3 command 0x041b tx timeout
Bluetooth: hci0 command 0x040f tx timeout
Bluetooth: hci1 command 0x040f tx timeout
Bluetooth: hci2 command 0x040f tx timeout
Bluetooth: hci3 command 0x040f tx timeout
Bluetooth: hci5 command 0x040f tx timeout
Bluetooth: hci4 command 0x040f tx timeout
Bluetooth: hci0 command 0x0419 tx timeout
Bluetooth: hci1 command 0x0419 tx timeout
Bluetooth: hci2 command 0x0419 tx timeout
Bluetooth: hci4 command 0x0419 tx timeout
Bluetooth: hci5 command 0x0419 tx timeout
Bluetooth: hci3 command 0x0419 tx timeout