INFO: trying to register non-static key in pfifo_fast_reset
From: syzbot <hidden>
Date: 2017-12-17 09:56:10
Hello, syzkaller hit the following crash on 41d8c16909ebda40f7b4982a7f5e2ad102705ade git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/master compiler: gcc (GCC) 7.1.1 20170620 .config is attached Raw console output is attached. C reproducer is attached syzkaller reproducer is attached. See https://goo.gl/kgGztJ for information about syzkaller reproducers RBP: 0000000000000008 R08: 0000000000000001 R09: 0000000000000034 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000030657267 R13: 74656e2f7665642f R14: 0000000000000000 R15: 0000000000000000 INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. CPU: 1 PID: 3119 Comm: syzkaller228956 Not tainted 4.15.0-rc3-next-20171213+ #66 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+0xe9/0x14b lib/dump_stack.c:53 register_lock_class+0x164/0x5d0 kernel/locking/lockdep.c:752 __lock_acquire+0xb4/0x1430 kernel/locking/lockdep.c:3314 lock_acquire+0xbf/0x220 kernel/locking/lockdep.c:3914 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline] _raw_spin_lock_bh+0x31/0x40 kernel/locking/spinlock.c:168 spin_lock_bh include/linux/spinlock.h:315 [inline] ptr_ring_consume_bh include/linux/ptr_ring.h:349 [inline] skb_array_consume_bh include/linux/skb_array.h:136 [inline] pfifo_fast_reset+0x9a/0x1b0 net/sched/sch_generic.c:662 qdisc_destroy+0x94/0x210 net/sched/sch_generic.c:896 qdisc_create_dflt+0xa6/0xb0 net/sched/sch_generic.c:840 mq_init+0x105/0x150 net/sched/sch_mq.c:61 qdisc_create_dflt+0x60/0xb0 net/sched/sch_generic.c:837 attach_default_qdiscs net/sched/sch_generic.c:972 [inline] dev_activate+0x363/0x3b0 net/sched/sch_generic.c:1011 __dev_open+0x119/0x180 net/core/dev.c:1389 __dev_change_flags+0x218/0x270 net/core/dev.c:6836 dev_change_flags+0x30/0x70 net/core/dev.c:6905 dev_ifsioc+0x3c2/0x520 net/core/dev_ioctl.c:257 dev_ioctl+0x15d/0x7a0 net/core/dev_ioctl.c:566 sock_do_ioctl+0x59/0x60 net/socket.c:971 sock_ioctl+0x211/0x320 net/socket.c:1061 vfs_ioctl fs/ioctl.c:46 [inline] do_vfs_ioctl+0xaf/0x840 fs/ioctl.c:686 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x4444b9 RSP: 002b:00007ffcad5a5418 --- 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. Please credit me with: Reported-by: syzbot [off-list ref] syzbot will keep track of this bug report. Once a fix for this bug is merged into any tree, reply to this email with: #syz fix: exact-commit-title If you want to test a patch for this bug, please reply with: #syz test: git://repo/address.git branch and provide the patch inline or as an attachment. 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.