binder_alloc: 12638: binder_alloc_buf, no vma binder: 12638:12640 transaction failed 29189/-3, size 24-8 line 2973 kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access binder: BINDER_SET_CONTEXT_MGR already set general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 12635 Comm: syz-executor5 Not tainted 4.19.0-rc4-next-20180921+ #77 binder_alloc: 12638: binder_alloc_buf, no vma Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 binder: 12638:12640 ioctl 40046207 0 returned -16 RIP: 0010:__fire_sched_out_preempt_notifiers kernel/sched/core.c:2502 [inline] RIP: 0010:fire_sched_out_preempt_notifiers kernel/sched/core.c:2510 [inline] RIP: 0010:prepare_task_switch kernel/sched/core.c:2616 [inline] RIP: 0010:context_switch kernel/sched/core.c:2795 [inline] RIP: 0010:__schedule+0x1144/0x1ed0 kernel/sched/core.c:3479 Code: 89 e0 48 c1 e8 03 42 80 3c 28 00 0f 85 7e 08 00 00 4d 8b 24 24 4d 85 e4 0f 84 7e f5 ff ff 49 8d 7c 24 10 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 a4 e8 e0 bb 00 fa eb 9d 48 8d bb 28 04 00 00 48 RSP: 0018:ffff8801befc7120 EFLAGS: 00010806 kobject: 'integrity' (00000000d5b090f7): kobject_uevent_env RAX: 1bd5a00000000022 RBX: ffff8801d3d46480 RCX: 1ffff100371698e7 RDX: 0000000040000002 RSI: 0000000000000000 RDI: dead000000000110 RBP: ffff8801befc72f8 R08: ffff8801902260c0 R09: fffff520004ab647 R10: fffff520004ab647 R11: ffffc9000255b23b R12: dead000000000100 binder: undelivered TRANSACTION_ERROR: 29189 R13: dffffc0000000000 R14: ffff8801dac2cc40 R15: ffff8801902260c0 binder: 12638:12645 transaction failed 29189/-3, size 24-8 line 2973 FS: 00007fc99d7f1700(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000110 CR3: 00000001d319e000 CR4: 00000000001426f0 Call Trace: binder: undelivered TRANSACTION_ERROR: 29189 kobject: 'integrity' (00000000d5b090f7): kobject_uevent_env: filter function caused the event to drop! preempt_schedule_common+0x1f/0xd0 kernel/sched/core.c:3603 preempt_schedule+0x4d/0x60 kernel/sched/core.c:3629 ___preempt_schedule+0x16/0x18 __raw_spin_unlock include/linux/spinlock_api_smp.h:152 [inline] _raw_spin_unlock+0x3f/0x50 kernel/locking/spinlock.c:176 spin_unlock include/linux/spinlock.h:369 [inline] alloc_vmap_area+0x6bc/0xa70 mm/vmalloc.c:509 __get_vm_area_node+0x181/0x3a0 mm/vmalloc.c:1396 __vmalloc_node_range+0xc4/0x750 mm/vmalloc.c:1745 __vmalloc_node mm/vmalloc.c:1795 [inline] __vmalloc_node_flags mm/vmalloc.c:1809 [inline] vzalloc+0x6f/0x80 mm/vmalloc.c:1848 kvm_dev_ioctl_get_cpuid+0x1b8/0xe6f arch/x86/kvm/cpuid.c:790 kvm_arch_dev_ioctl+0x37e/0x630 arch/x86/kvm/x86.c:3034 kvm_dev_ioctl+0x182/0x1ae0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3262 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0x1de/0x1720 fs/ioctl.c:685 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:702 __do_sys_ioctl fs/ioctl.c:709 [inline] __se_sys_ioctl fs/ioctl.c:707 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:707 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4574e7 Code: 48 83 c4 08 48 89 d8 5b 5d c3 66 0f 1f 84 00 00 00 00 00 48 89 e8 48 f7 d8 48 39 c3 0f 92 c0 eb 92 66 90 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 7d b5 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fc99d7ef098 EFLAGS: 00000203 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fc99d7ef830 RCX: 00000000004574e7 RDX: 00007fc99d7ef830 RSI: 00000000c008ae05 RDI: 0000000000000008 RBP: 0000000000000000 R08: 0000000000000090 R09: 00000000000000a8 R10: 00000000000000b3 R11: 0000000000000203 R12: 0000000000000008 R13: 000000002001e000 R14: 00000000004c49c2 R15: 0000000000000000 Modules linked in: ====================================================== WARNING: possible circular locking dependency detected 4.19.0-rc4-next-20180921+ #77 Not tainted ------------------------------------------------------ syz-executor5/12635 is trying to acquire lock: 00000000bf01d156 ((console_sem).lock){-.-.}, at: down_trylock+0x13/0x70 kernel/locking/semaphore.c:136 but task is already holding lock: 0000000087bc5f02 (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1125 [inline] 0000000087bc5f02 (&rq->lock){-.-.}, at: __schedule+0x236/0x1ed0 kernel/sched/core.c:3417 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&rq->lock){-.-.}: __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2d/0x40 kernel/locking/spinlock.c:144 rq_lock kernel/sched/sched.h:1125 [inline] task_fork_fair+0xb0/0x6d0 kernel/sched/fair.c:9674 sched_fork+0x443/0xba0 kernel/sched/core.c:2358 copy_process+0x2585/0x8780 kernel/fork.c:1887 _do_fork+0x1cb/0x11c0 kernel/fork.c:2216 kernel_thread+0x34/0x40 kernel/fork.c:2275 rest_init+0x22/0xe5 init/main.c:408 start_kernel+0x8bc/0x8f7 init/main.c:739 x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:452 x86_64_start_kernel+0x76/0x79 arch/x86/kernel/head64.c:433 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:242 -> #1 (&p->pi_lock){-.-.}: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x99/0xd0 kernel/locking/spinlock.c:152 try_to_wake_up+0xd2/0x12f0 kernel/sched/core.c:1964 wake_up_process+0x10/0x20 kernel/sched/core.c:2128 __up.isra.1+0x1c0/0x2a0 kernel/locking/semaphore.c:262 up+0x13c/0x1c0 kernel/locking/semaphore.c:187 __up_console_sem+0xbe/0x1b0 kernel/printk/printk.c:243 console_unlock+0x80c/0x1150 kernel/printk/printk.c:2426 vprintk_emit+0x33d/0x930 kernel/printk/printk.c:1921 vprintk_default+0x28/0x30 kernel/printk/printk.c:1962 vprintk_func+0x7e/0x181 kernel/printk/printk_safe.c:398 printk+0xa7/0xcf kernel/printk/printk.c:1995 load_umh+0x51/0xbd net/bpfilter/bpfilter_kern.c:98 do_one_initcall+0x140/0x956 init/main.c:885 do_initcall_level init/main.c:953 [inline] do_initcalls init/main.c:961 [inline] do_basic_setup init/main.c:979 [inline] kernel_init_freeable+0x4bb/0x5ae init/main.c:1144 kernel_init+0x11/0x1b2 init/main.c:1063 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 -> #0 ((console_sem).lock){-.-.}: lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3900 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x99/0xd0 kernel/locking/spinlock.c:152 down_trylock+0x13/0x70 kernel/locking/semaphore.c:136 __down_trylock_console_sem+0xae/0x200 kernel/printk/printk.c:226 console_trylock+0x15/0xa0 kernel/printk/printk.c:2244 console_trylock_spinning kernel/printk/printk.c:1648 [inline] vprintk_emit+0x322/0x930 kernel/printk/printk.c:1920 vprintk_default+0x28/0x30 kernel/printk/printk.c:1962 vprintk_func+0x7e/0x181 kernel/printk/printk_safe.c:398 printk+0xa7/0xcf kernel/printk/printk.c:1995 kasan_die_handler.cold.22+0x11/0x30 arch/x86/mm/kasan_init_64.c:250 notifier_call_chain+0x17e/0x380 kernel/notifier.c:93 __atomic_notifier_call_chain kernel/notifier.c:183 [inline] atomic_notifier_call_chain+0x96/0x190 kernel/notifier.c:193 notify_die+0x1bd/0x2d0 kernel/notifier.c:549 do_general_protection+0x25b/0x340 arch/x86/kernel/traps.c:573 general_protection+0x1e/0x30 arch/x86/entry/entry_64.S:1138 __fire_sched_out_preempt_notifiers kernel/sched/core.c:2502 [inline] fire_sched_out_preempt_notifiers kernel/sched/core.c:2510 [inline] prepare_task_switch kernel/sched/core.c:2616 [inline] context_switch kernel/sched/core.c:2795 [inline] __schedule+0x1144/0x1ed0 kernel/sched/core.c:3479 preempt_schedule_common+0x1f/0xd0 kernel/sched/core.c:3603 preempt_schedule+0x4d/0x60 kernel/sched/core.c:3629 ___preempt_schedule+0x16/0x18 __raw_spin_unlock include/linux/spinlock_api_smp.h:152 [inline] _raw_spin_unlock+0x3f/0x50 kernel/locking/spinlock.c:176 spin_unlock include/linux/spinlock.h:369 [inline] alloc_vmap_area+0x6bc/0xa70 mm/vmalloc.c:509 __get_vm_area_node+0x181/0x3a0 mm/vmalloc.c:1396 __vmalloc_node_range+0xc4/0x750 mm/vmalloc.c:1745 __vmalloc_node mm/vmalloc.c:1795 [inline] __vmalloc_node_flags mm/vmalloc.c:1809 [inline] vzalloc+0x6f/0x80 mm/vmalloc.c:1848 kvm_dev_ioctl_get_cpuid+0x1b8/0xe6f arch/x86/kvm/cpuid.c:790 kvm_arch_dev_ioctl+0x37e/0x630 arch/x86/kvm/x86.c:3034 kvm_dev_ioctl+0x182/0x1ae0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3262 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0x1de/0x1720 fs/ioctl.c:685 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:702 __do_sys_ioctl fs/ioctl.c:709 [inline] __se_sys_ioctl fs/ioctl.c:707 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:707 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Chain exists of: (console_sem).lock --> &p->pi_lock --> &rq->lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&rq->lock); lock(&p->pi_lock); lock(&rq->lock); lock((console_sem).lock); *** DEADLOCK *** 2 locks held by syz-executor5/12635: #0: 0000000087bc5f02 (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1125 [inline] #0: 0000000087bc5f02 (&rq->lock){-.-.}, at: __schedule+0x236/0x1ed0 kernel/sched/core.c:3417 #1: 00000000f1947616 (rcu_read_lock){....}, at: atomic_notifier_call_chain+0x0/0x190 kernel/notifier.c:329 stack backtrace: CPU: 0 PID: 12635 Comm: syz-executor5 Not tainted 4.19.0-rc4-next-20180921+ #77 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1d3/0x2c4 lib/dump_stack.c:113 print_circular_bug.isra.33.cold.54+0x1bd/0x27d kernel/locking/lockdep.c:1221 check_prev_add kernel/locking/lockdep.c:1861 [inline] check_prevs_add kernel/locking/lockdep.c:1974 [inline] validate_chain kernel/locking/lockdep.c:2415 [inline] __lock_acquire+0x33e4/0x4ec0 kernel/locking/lockdep.c:3411 lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3900 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x99/0xd0 kernel/locking/spinlock.c:152 down_trylock+0x13/0x70 kernel/locking/semaphore.c:136 __down_trylock_console_sem+0xae/0x200 kernel/printk/printk.c:226 console_trylock+0x15/0xa0 kernel/printk/printk.c:2244 console_trylock_spinning kernel/printk/printk.c:1648 [inline] vprintk_emit+0x322/0x930 kernel/printk/printk.c:1920 vprintk_default+0x28/0x30 kernel/printk/printk.c:1962 vprintk_func+0x7e/0x181 kernel/printk/printk_safe.c:398 printk+0xa7/0xcf kernel/printk/printk.c:1995 kasan_die_handler.cold.22+0x11/0x30 arch/x86/mm/kasan_init_64.c:250 notifier_call_chain+0x17e/0x380 kernel/notifier.c:93 __atomic_notifier_call_chain kernel/notifier.c:183 [inline] atomic_notifier_call_chain+0x96/0x190 kernel/notifier.c:193 notify_die+0x1bd/0x2d0 kernel/notifier.c:549 do_general_protection+0x25b/0x340 arch/x86/kernel/traps.c:573 general_protection+0x1e/0x30 arch/x86/entry/entry_64.S:1138 RIP: 0010:__fire_sched_out_preempt_notifiers kernel/sched/core.c:2502 [inline] RIP: 0010:fire_sched_out_preempt_notifiers kernel/sched/core.c:2510 [inline] RIP: 0010:prepare_task_switch kernel/sched/core.c:2616 [inline] RIP: 0010:context_switch kernel/sched/core.c:2795 [inline] RIP: 0010:__schedule+0x1144/0x1ed0 kernel/sched/core.c:3479 Code: 89 e0 48 c1 e8 03 42 80 3c 28 00 0f 85 7e 08 00 00 4d 8b 24 24 4d 85 e4 0f 84 7e f5 ff ff 49 8d 7c 24 10 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 a4 e8 e0 bb 00 fa eb 9d 48 8d bb 28 04 00 00 48 RSP: 0018:ffff8801befc7120 EFLAGS: 00010806 RAX: 1bd5a00000000022 RBX: ffff8801d3d46480 RCX: 1ffff100371698e7 RDX: 0000000040000002 RSI: 0000000000000000 RDI: dead000000000110 RBP: ffff8801befc72f8 R08: ffff8801902260c0 R09: fffff520004ab647 R10: fffff520004ab647 R11: ffffc9000255b23b R12: dead000000000100 R13: dffffc0000000000 R14: ffff8801dac2cc40 R15: ffff8801902260c0 preempt_schedule_common+0x1f/0xd0 kernel/sched/core.c:3603 preempt_schedule+0x4d/0x60 kernel/sched/core.c:3629 ___preempt_schedule+0x16/0x18 __raw_spin_unlock include/linux/spinlock_api_smp.h:152 [inline] _raw_spin_unlock+0x3f/0x50 kernel/locking/spinlock.c:176 spin_unlock include/linux/spinlock.h:369 [inline] alloc_vmap_area+0x6bc/0xa70 mm/vmalloc.c:509 __get_vm_area_node+0x181/0x3a0 mm/vmalloc.c:1396 __vmalloc_node_range+0xc4/0x750 mm/vmalloc.c:1745 __vmalloc_node mm/vmalloc.c:1795 [inline] __vmalloc_node_flags mm/vmalloc.c:1809 [inline] vzalloc+0x6f/0x80 mm/vmalloc.c:1848 kvm_dev_ioctl_get_cpuid+0x1b8/0xe6f arch/x86/kvm/cpuid.c:790 kvm_arch_dev_ioctl+0x37e/0x630 arch/x86/kvm/x86.c:3034 kvm_dev_ioctl+0x182/0x1ae0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3262 ? kasan_chec Lost 34 message(s)! ---[ end trace ca1c49e2001716c2 ]--- RIP: 0010:__fire_sched_out_preempt_notifiers kernel/sched/core.c:2502 [inline] RIP: 0010:fire_sched_out_preempt_notifiers kernel/sched/core.c:2510 [inline] RIP: 0010:prepare_task_switch kernel/sched/core.c:2616 [inline] RIP: 0010:context_switch kernel/sched/core.c:2795 [inline] RIP: 0010:__schedule+0x1144/0x1ed0 kernel/sched/core.c:3479 Code: 89 e0 48 c1 e8 03 42 80 3c 28 00 0f 85 7e 08 00 00 4d 8b 24 24 4d 85 e4 0f 84 7e f5 ff ff 49 8d 7c 24 10 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 a4 e8 e0 bb 00 fa eb 9d 48 8d bb 28 04 00 00 48 RSP: 0018:ffff8801befc7120 EFLAGS: 00010806 RAX: 1bd5a00000000022 RBX: ffff8801d3d46480 RCX: 1ffff100371698e7 RDX: 0000000040000002 RSI: 0000000000000000 RDI: dead000000000110 RBP: ffff8801befc72f8 R08: ffff8801902260c0 R09: fffff520004ab647 R10: fffff520004ab647 R11: ffffc9000255b23b R12: dead000000000100 R13: dffffc0000000000 R14: ffff8801dac2cc40 R15: ffff8801902260c0 FS: 00007fc99d7f1700(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000110 CR3: 00000001d319e000 CR4: 00000000001426f0