INFO: task syz-executor.1:6594 blocked for more than 143 seconds.
Not tainted 5.17.0-rc8-syzkaller-00061-g34e047aa16c0 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:28064 pid: 6594 ppid: 3643 flags:0x00004004
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: 0033:0x7fa05db62e07
RSP: 002b:00007fa05c4b55d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000020000000 RCX: 00007fa05db62e07
RDX: 00007fa05c4b5d10 RSI: 000000004020ae46 RDI: 0000000000000004
RBP: 0000000000000004 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000004 R11: 0000000000000246 R12: 00000000fec00000
R13: 00007fa05c4b5d10 R14: 0000000000000012 R15: 0000000020011000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bb84ca0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6460
2 locks held by getty/3272:
#0: ffff88814afe1098 (&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
3 locks held by kworker/0:12/5993:
1 lock held by syz-executor.1/6594:
#0: ffffc90005ab90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1926 [inline]
#0: ffffc90005ab90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1939 [inline]
#0: ffffc90005ab90a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl+0x50f/0x22c0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4492
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.17.0-rc8-syzkaller-00061-g34e047aa16c0 #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: 5993 Comm: kworker/0:12 Not tainted 5.17.0-rc8-syzkaller-00061-g34e047aa16c0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: rcu_gp process_srcu
RIP: 0010:lockdep_hardirqs_off+0xc0/0xd0 kernel/locking/lockdep.c:4400
Code: 70 02 00 8b 85 f8 09 00 00 48 89 9d 08 0a 00 00 65 c7 05 0b 49 b6 76 00 00 00 00 83 c0 01 89 85 f8 09 00 00 89 85 14 0a 00 00 <5b> 5d c3 c3 66 66 2e 0f 1f 84 00 00 00 00 00 90 55 89 f5 83 fd 07
RSP: 0018:ffffc9000fb37cb0 EFLAGS: 00000002
RAX: 00000000015df462 RBX: ffffffff814cff67 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff88807d8aba00 R08: 0000000000000000 R09: ffffffff8ffc695f
R10: ffffffff814cfec3 R11: 0000000000000001 R12: ffffc90005ac35f0
R13: ffffc9000fb37db8 R14: ffff888010c66400 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00f6a8ff0 CR3: 000000000b88e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
trace_hardirqs_off+0x13/0x1b0 kernel/trace/trace_preemptirq.c:76
queue_delayed_work_on+0xd7/0x120 kernel/workqueue.c:1715
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: 70 02 jo 0x4
2: 00 8b 85 f8 09 00 add %cl,0x9f885(%rbx)
8: 00 48 89 add %cl,-0x77(%rax)
b: 9d popfq
c: 08 0a or %cl,(%rdx)
e: 00 00 add %al,(%rax)
10: 65 c7 05 0b 49 b6 76 movl $0x0,%gs:0x76b6490b(%rip) # 0x76b64926
17: 00 00 00 00
1b: 83 c0 01 add $0x1,%eax
1e: 89 85 f8 09 00 00 mov %eax,0x9f8(%rbp)
24: 89 85 14 0a 00 00 mov %eax,0xa14(%rbp)
* 2a: 5b pop %rbx <-- trapping instruction
2b: 5d pop %rbp
2c: c3 retq
2d: c3 retq
2e: 66 66 2e 0f 1f 84 00 data16 nopw %cs:0x0(%rax,%rax,1)
35: 00 00 00 00
39: 90 nop
3a: 55 push %rbp
3b: 89 f5 mov %esi,%ebp
3d: 83 fd 07 cmp $0x7,%ebp