INFO: task syz-executor500:19706 blocked for more than 143 seconds. Not tainted 5.17.0-rc7-syzkaller-00020-gea4424be1688 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor500 state:D stack:27048 pid:19706 ppid: 3644 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4995 [inline] __schedule+0xa94/0x4910 kernel/sched/core.c:6304 schedule+0xd2/0x260 kernel/sched/core.c:6377 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x2af/0x360 kernel/sched/completion.c:106 __synchronize_srcu+0x1f2/0x290 kernel/rcu/srcutree.c:930 kvm_swap_active_memslots+0x410/0x800 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1473 kvm_activate_memslot arch/x86/kvm/../../../virt/kvm/kvm_main.c:1595 [inline] kvm_create_memslot arch/x86/kvm/../../../virt/kvm/kvm_main.c:1660 [inline] kvm_set_memslot+0xa67/0x1010 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1772 __kvm_set_memory_region+0xf02/0x11f0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1914 kvm_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1927 [inline] kvm_vm_ioctl_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1939 [inline] kvm_vm_ioctl+0x51a/0x22c0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4492 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f2ade824657 RSP: 002b:00007f2ade7ce818 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f2ade824657 RDX: 00007f2ade7cebb0 RSI: 000000004020ae46 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2ade7ceeb0 R13: 00000000fec00000 R14: 0000000000000018 R15: 00007f2ade7ced70 INFO: task syz-executor500:24403 blocked for more than 144 seconds. Not tainted 5.17.0-rc7-syzkaller-00020-gea4424be1688 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor500 state:D stack:28176 pid:24403 ppid: 3640 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:4995 [inline] __schedule+0xa94/0x4910 kernel/sched/core.c:6304 schedule+0xd2/0x260 kernel/sched/core.c:6377 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x2af/0x360 kernel/sched/completion.c:106 __synchronize_srcu+0x1f2/0x290 kernel/rcu/srcutree.c:930 kvm_swap_active_memslots+0x410/0x800 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1473 kvm_activate_memslot arch/x86/kvm/../../../virt/kvm/kvm_main.c:1595 [inline] kvm_create_memslot arch/x86/kvm/../../../virt/kvm/kvm_main.c:1660 [inline] kvm_set_memslot+0xa67/0x1010 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1772 __kvm_set_memory_region+0xf02/0x11f0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1914 kvm_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1927 [inline] kvm_vm_ioctl_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1939 [inline] kvm_vm_ioctl+0x51a/0x22c0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4492 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f2ade824657 RSP: 002b:00007f2ade7ce818 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f2ade824657 RDX: 00007f2ade7ceeb0 RSI: 000000004020ae46 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2ade7ceeb0 R13: 00000000fec00000 R14: 0000000000000009 R15: 0000000020008000 Showing all locks held in the system: 1 lock held by khungtaskd/26: #0: ffffffff8bb845e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6460 2 locks held by getty/3279: #0: ffff88807e520098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244 #1: ffffc90002b662e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2075 1 lock held by syz-executor500/19706: #0: ffffc90004e690a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1926 [inline] #0: ffffc90004e690a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1939 [inline] #0: ffffc90004e690a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl+0x50f/0x22c0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4492 1 lock held by syz-executor500/24403: #0: ffffc900058b10a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1926 [inline] #0: ffffc900058b10a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1939 [inline] #0: ffffc900058b10a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl+0x50f/0x22c0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4492 1 lock held by syz-executor500/32413: #0: ffffc9000bb390a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1926 [inline] #0: ffffc9000bb390a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1939 [inline] #0: ffffc9000bb390a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl+0x50f/0x22c0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4492 1 lock held by syz-executor500/487: #0: ffffffff8bb8e130 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x44/0x430 kernel/rcu/tree.c:4026 1 lock held by syz-executor500/490: #0: ffffffff8bb8e130 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x44/0x430 kernel/rcu/tree.c:4026 1 lock held by syz-executor500/495: #0: ffffffff8bb8e130 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x44/0x430 kernel/rcu/tree.c:4026 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 26 Comm: khungtaskd Not tainted 5.17.0-rc7-syzkaller-00020-gea4424be1688 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline] watchdog+0xc1d/0xf50 kernel/hung_task.c:369 kthread+0x2e9/0x3a0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 3671 Comm: kworker/u4:1 Not tainted 5.17.0-rc7-syzkaller-00020-gea4424be1688 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_nc_worker RIP: 0010:arch_irqs_disabled_flags arch/x86/include/asm/irqflags.h:125 [inline] RIP: 0010:lock_acquire kernel/locking/lockdep.c:5640 [inline] RIP: 0010:lock_acquire+0x180/0x510 kernel/locking/lockdep.c:5604 Code: 85 d2 0f 85 cc 00 00 00 9c 8f 44 24 08 fa 48 c7 c7 e0 60 ac 89 e8 00 aa ee 07 41 89 e8 44 89 e1 44 89 ea 65 ff 05 20 f6 a4 7e <48> 81 64 24 08 00 02 00 00 44 89 fe 6a 00 4c 89 f7 6a 00 ff b4 24 RSP: 0018:ffffc900029dfb38 EFLAGS: 00000002 RAX: 0000000000000000 RBX: 1ffff9200053bf69 RCX: 0000000000000002 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8d942617 R10: fffffbfff1b284c2 R11: 0000000000000000 R12: 0000000000000002 R13: 0000000000000000 R14: ffffffff8bb845e0 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 000000002284c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_lock_acquire include/linux/rcupdate.h:268 [inline] rcu_read_lock include/linux/rcupdate.h:694 [inline] batadv_nc_process_nc_paths.part.0+0xec/0x3c0 net/batman-adv/network-coding.c:687 batadv_nc_process_nc_paths net/batman-adv/network-coding.c:679 [inline] batadv_nc_worker+0xc46/0xfa0 net/batman-adv/network-coding.c:728 process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307 worker_thread+0x657/0x1110 kernel/workqueue.c:2454 kthread+0x2e9/0x3a0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 ---------------- Code disassembly (best guess): 0: 85 d2 test %edx,%edx 2: 0f 85 cc 00 00 00 jne 0xd4 8: 9c pushfq 9: 8f 44 24 08 popq 0x8(%rsp) d: fa cli e: 48 c7 c7 e0 60 ac 89 mov $0xffffffff89ac60e0,%rdi 15: e8 00 aa ee 07 callq 0x7eeaa1a 1a: 41 89 e8 mov %ebp,%r8d 1d: 44 89 e1 mov %r12d,%ecx 20: 44 89 ea mov %r13d,%edx 23: 65 ff 05 20 f6 a4 7e incl %gs:0x7ea4f620(%rip) # 0x7ea4f64a * 2a: 48 81 64 24 08 00 02 andq $0x200,0x8(%rsp) <-- trapping instruction 31: 00 00 33: 44 89 fe mov %r15d,%esi 36: 6a 00 pushq $0x0 38: 4c 89 f7 mov %r14,%rdi 3b: 6a 00 pushq $0x0 3d: ff .byte 0xff 3e: b4 24 mov $0x24,%ah