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INFO: trying to register non-static key.

Status: closed as invalid on 2017/10/22 12:45
First crash: 2816d, last: 2807d
▶ ▼ Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: trying to register non-static key. (2) net C 8624 2740d 2742d 3/28 fixed on 2017/11/28 03:36

Sample crash report:
==================================================================
INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.13.0-rc7-next-20170901+ #13
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:16 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:52
 register_lock_class+0x55e/0x2c70 kernel/locking/lockdep.c:769
 __lock_acquire+0x203/0x4620 kernel/locking/lockdep.c:3385
 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4002
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
 _raw_spin_lock_bh+0x31/0x40 kernel/locking/spinlock.c:175
 spin_lock_bh include/linux/spinlock.h:321 [inline]
 tun_flow_cleanup+0xf4/0x300 drivers/net/tun.c:383
 call_timer_fn+0x246/0x850 kernel/time/timer.c:1281
 expire_timers kernel/time/timer.c:1320 [inline]
 __run_timers+0x7fd/0xb90 kernel/time/timer.c:1620
 run_timer_softirq+0x4c/0xb0 kernel/time/timer.c:1646
 __do_softirq+0x2bb/0xbd0 kernel/softirq.c:284
 invoke_softirq kernel/softirq.c:364 [inline]
 irq_exit+0x1d3/0x210 kernel/softirq.c:405
 exiting_irq arch/x86/include/asm/apic.h:638 [inline]
 smp_apic_timer_interrupt+0x177/0x710 arch/x86/kernel/apic/apic.c:1048
 apic_timer_interrupt+0x9d/0xb0 arch/x86/entry/entry_64.S:577
 </IRQ>
RIP: 0010:native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:53
RSP: 0018:ffff88003e057db0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10
RAX: dffffc0000000000 RBX: 1ffff10007c0afb9 RCX: 0000000000000000
RDX: 1ffffffff0b59308 RSI: 0000000000000001 RDI: ffffffff85ac9840
RBP: ffff88003e057db0 R08: ffffffff8161c679 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff85ac9830
R13: ffff88003e057e68 R14: 0000000000000000 R15: ffff88003e04e340
 arch_safe_halt arch/x86/include/asm/paravirt.h:98 [inline]
 default_idle+0xbf/0x460 arch/x86/kernel/process.c:341
 arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:332
 default_idle_call+0x36/0x90 kernel/sched/idle.c:98
 cpuidle_idle_call kernel/sched/idle.c:156 [inline]
 do_idle+0x256/0x3b0 kernel/sched/idle.c:246
 cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:351
 start_secondary+0x277/0x310 arch/x86/kernel/smpboot.c:275
 secondary_startup_64+0xa5/0xa5 arch/x86/kernel/head_64.S:235
BUG: KASAN: use-after-free in __collect_expired_timers include/linux/list.h:729 [inline]
BUG: KASAN: use-after-free in collect_expired_timers kernel/time/timer.c:1569 [inline]
BUG: KASAN: use-after-free in __run_timers+0xa2e/0xb90 kernel/time/timer.c:1616
Write of size 8 at addr ffff88004ba4b708 by task syz-executor3/4065

CPU: 3 PID: 4065 Comm: syz-executor3 Not tainted 4.13.0-rc7-next-20170901+ #13
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:16 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:52
 print_address_description+0x73/0x250 mm/kasan/report.c:252
 kasan_report_error mm/kasan/report.c:351 [inline]
 kasan_report+0x24e/0x340 mm/kasan/report.c:409
 __asan_report_store8_noabort+0x17/0x20 mm/kasan/report.c:435
 __collect_expired_timers include/linux/list.h:729 [inline]
 collect_expired_timers kernel/time/timer.c:1569 [inline]
 __run_timers+0xa2e/0xb90 kernel/time/timer.c:1616
 run_timer_softirq+0x4c/0xb0 kernel/time/timer.c:1646
 __do_softirq+0x2bb/0xbd0 kernel/softirq.c:284
 invoke_softirq kernel/softirq.c:364 [inline]
 irq_exit+0x1d3/0x210 kernel/softirq.c:405
 exiting_irq arch/x86/include/asm/apic.h:638 [inline]
 smp_apic_timer_interrupt+0x177/0x710 arch/x86/kernel/apic/apic.c:1048
 apic_timer_interrupt+0x9d/0xb0 arch/x86/entry/entry_64.S:577
 </IRQ>
RIP: 0010:arch_local_irq_enable arch/x86/include/asm/paravirt.h:824 [inline]
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x56/0x70 kernel/locking/spinlock.c:199
RSP: 0018:ffff880036e07908 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: dffffc0000000000 RBX: ffff88003d694948 RCX: 0000000000000000
RDX: 1ffffffff0b59307 RSI: 0000000000000001 RDI: ffffffff85ac9838
RBP: ffff880036e07910 R08: ffff88003d694960 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000009
R13: ffff88003a8741c0 R14: 0000000000000000 R15: ffff88003a8741c0
 spin_unlock_irq include/linux/spinlock.h:366 [inline]
 get_signal+0x855/0x17e0 kernel/signal.c:2309
 do_signal+0x94/0x1ee0 arch/x86/kernel/signal.c:808
 exit_to_usermode_loop+0x224/0x300 arch/x86/entry/common.c:158
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath+0x42f/0x500 arch/x86/entry/common.c:266
 entry_SYSCALL_64_fastpath+0xbc/0xbe
RIP: 0033:0x447299
RSP: 002b:00007fce3c237cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 0000000000708188 RCX: 0000000000447299
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000708188
RBP: 0000000000708160 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fce3c2389c0 R15: 00007fce3c238700

Allocated by task 3595:
 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59
 save_stack+0x43/0xd0 mm/kasan/kasan.c:447
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:551
 __do_kmalloc_node mm/slab.c:3689 [inline]
 __kmalloc_node+0x47/0x70 mm/slab.c:3696
 kmalloc_node include/linux/slab.h:535 [inline]
 kvmalloc_node+0x64/0xd0 mm/util.c:397
 kvmalloc include/linux/mm.h:529 [inline]
 kvzalloc include/linux/mm.h:537 [inline]
 alloc_netdev_mqs+0x16e/0xed0 net/core/dev.c:8010
 tun_set_iff drivers/net/tun.c:2008 [inline]
 __tun_chr_ioctl+0x12be/0x3d20 drivers/net/tun.c:2262
 tun_chr_ioctl+0x2a/0x40 drivers/net/tun.c:2507
 vfs_ioctl fs/ioctl.c:45 [inline]
 do_vfs_ioctl+0x1b1/0x1530 fs/ioctl.c:685
 SYSC_ioctl fs/ioctl.c:700 [inline]
 SyS_ioctl+0x8f/0xc0 fs/ioctl.c:691
 entry_SYSCALL_64_fastpath+0x1f/0xbe

Freed by task 3595:
 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59
 save_stack+0x43/0xd0 mm/kasan/kasan.c:447
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_slab_free+0x71/0xc0 mm/kasan/kasan.c:524
 __cache_free mm/slab.c:3503 [inline]
 kfree+0xca/0x250 mm/slab.c:3820
 kvfree+0x36/0x60 mm/util.c:416
 netdev_freemem net/core/dev.c:7962 [inline]
 free_netdev+0x2cf/0x360 net/core/dev.c:8124
 tun_set_iff drivers/net/tun.c:2091 [inline]
 __tun_chr_ioctl+0x2cf6/0x3d20 drivers/net/tun.c:2262
 tun_chr_ioctl+0x2a/0x40 drivers/net/tun.c:2507
 vfs_ioctl fs/ioctl.c:45 [inline]
 do_vfs_ioctl+0x1b1/0x1530 fs/ioctl.c:685
 SYSC_ioctl fs/ioctl.c:700 [inline]
 SyS_ioctl+0x8f/0xc0 fs/ioctl.c:691
 entry_SYSCALL_64_fastpath+0x1f/0xbe

The buggy address belongs to the object at ffff88004ba48300
 which belongs to the cache kmalloc-16384 of size 16384
The buggy address is located 13320 bytes inside of
 16384-byte region [ffff88004ba48300, ffff88004ba4c300)
The buggy address belongs to the page:
page:ffffea00012e9200 count:1 mapcount:0 mapping:ffff88004ba48300 index:0x0 compound_mapcount: 0
flags: 0x500000000008100(slab|head)
raw: 0500000000008100 ffff88004ba48300 0000000000000000 0000000100000001
raw: ffffea00012e5a20 ffffea00012ec620 ffff88003e802200 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88004ba4b600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88004ba4b680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88004ba4b700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff88004ba4b780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88004ba4b800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================

Crashes (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2017/09/04 00:26 linux-next 1d53d908b79d a54dce00 .config console log report ci-upstream-next-kasan-gce
2017/08/30 13:20 linux-next 9458bf6edfa8 ed7f9598 .config console log report ci-upstream-next-kasan-gce
2017/08/30 04:24 linux-next 9458bf6edfa8 ed7f9598 .config console log report ci-upstream-next-kasan-gce
2017/08/25 18:17 linux-next 7159188b70e3 4074aed7 .config console log report ci-upstream-next-kasan-gce
* Struck through repros no longer work on HEAD.