kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 19752 Comm: syz-executor2 Not tainted 4.19.0-rc4-next-20180921+ #77 kobject: 'loop0' (0000000088ee4f8b): kobject_uevent_env Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__fire_sched_in_preempt_notifiers kernel/sched/core.c:2486 [inline] RIP: 0010:fire_sched_in_preempt_notifiers kernel/sched/core.c:2492 [inline] RIP: 0010:finish_task_switch+0x3a4/0x900 kernel/sched/core.c:2684 Code: 3d 04 00 00 4d 8b bc 24 50 03 00 00 4d 85 ff 0f 84 ab fe ff ff 49 bc 00 00 00 00 00 fc ff df 49 8d 7f 10 48 89 f9 48 c1 e9 03 <42> 80 3c 21 00 0f 85 da 03 00 00 49 8b 4f 10 48 89 ce 48 c1 ee 03 RSP: 0018:ffff88018e8ce990 EFLAGS: 00010a06 kobject: 'loop0' (0000000088ee4f8b): fill_kobj_path: path = '/devices/virtual/block/loop0' RAX: 0000000000000000 RBX: ffff8801dad2cc40 RCX: 1bd5a00000000022 RDX: 0000000000000534 RSI: ffffffff810f018e RDI: dead000000000110 RBP: ffff88018e8cea78 R08: ffff8801c1a0e080 R09: fffff52001cf8446 R10: fffff52001cf8446 R11: ffffc9000e7c2237 R12: dffffc0000000000 R13: ffff880171d86040 R14: 0000000000000000 R15: dead000000000100 FS: 00007fda52c53700(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004ddbeb CR3: 00000001c109d000 CR4: 00000000001426e0 Call Trace: binder: 19772:19773 unknown command 1078485770 context_switch kernel/sched/core.c:2833 [inline] __schedule+0x874/0x1ed0 kernel/sched/core.c:3479 kobject: 'loop1' (000000003bdf85ca): kobject_uevent_env binder: 19772:19773 ioctl c0306201 20007000 returned -22 kobject: 'loop1' (000000003bdf85ca): fill_kobj_path: path = '/devices/virtual/block/loop1' preempt_schedule_common+0x1f/0xd0 kernel/sched/core.c:3603 binder: BINDER_SET_CONTEXT_MGR already set preempt_schedule+0x4d/0x60 kernel/sched/core.c:3629 ___preempt_schedule+0x16/0x18 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline] _raw_spin_unlock_irqrestore+0xbb/0xd0 kernel/locking/spinlock.c:184 spin_unlock_irqrestore include/linux/spinlock.h:384 [inline] srcu_funnel_gp_start kernel/rcu/srcutree.c:713 [inline] __call_srcu+0x88d/0x12a0 kernel/rcu/srcutree.c:892 kobject: 'loop5' (00000000680f7c98): kobject_uevent_env binder: 19772:19781 ioctl 40046207 0 returned -16 kobject: 'loop5' (00000000680f7c98): fill_kobj_path: path = '/devices/virtual/block/loop5' binder: 19772:19773 unknown command 1078485770 __synchronize_srcu+0x201/0x2d0 kernel/rcu/srcutree.c:940 synchronize_srcu_expedited+0x18/0x20 kernel/rcu/srcutree.c:966 kobject: 'loop4' (00000000272ac02b): kobject_uevent_env install_new_memslots+0x20a/0x4b0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:884 __kvm_set_memory_region+0x1ae0/0x2c60 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1059 binder: 19772:19773 ioctl c0306201 20007000 returned -22 kobject: 'loop4' (00000000272ac02b): fill_kobj_path: path = '/devices/virtual/block/loop4' kvm_set_memory_region+0x2e/0x50 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1082 kvm_vm_ioctl_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1094 [inline] kvm_vm_ioctl+0x652/0x1d60 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2986 kobject: 'loop5' (00000000680f7c98): kobject_uevent_env kobject: 'loop5' (00000000680f7c98): fill_kobj_path: path = '/devices/virtual/block/loop5' 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: 0033:0x457679 Code: 1d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fda52c52c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fda52c536d4 RCX: 0000000000457679 RDX: 00000000200002c0 RSI: 000000004020ae46 RDI: 0000000000000007 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004d0330 R14: 00000000004c85c8 R15: 0000000000000000 Modules linked in: ---[ end trace 70a79af30515db7e ]--- RIP: 0010:__fire_sched_in_preempt_notifiers kernel/sched/core.c:2486 [inline] RIP: 0010:fire_sched_in_preempt_notifiers kernel/sched/core.c:2492 [inline] RIP: 0010:finish_task_switch+0x3a4/0x900 kernel/sched/core.c:2684 Code: 3d 04 00 00 4d 8b bc 24 50 03 00 00 4d 85 ff 0f 84 ab fe ff ff 49 bc 00 00 00 00 00 fc ff df 49 8d 7f 10 48 89 f9 48 c1 e9 03 <42> 80 3c 21 00 0f 85 da 03 00 00 49 8b 4f 10 48 89 ce 48 c1 ee 03 RSP: 0018:ffff88018e8ce990 EFLAGS: 00010a06 RAX: 0000000000000000 RBX: ffff8801dad2cc40 RCX: 1bd5a00000000022 RDX: 0000000000000534 RSI: ffffffff810f018e RDI: dead000000000110 RBP: ffff88018e8cea78 R08: ffff8801c1a0e080 R09: fffff52001cf8446 R10: fffff52001cf8446 R11: ffffc9000e7c2237 R12: dffffc0000000000 R13: ffff880171d86040 R14: 0000000000000000 R15: dead000000000100 FS: 00007fda52c53700(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004ddbeb CR3: 00000001c109d000 CR4: 00000000001426e0