INFO: task syz-executor.3:28727 blocked for more than 143 seconds.
Not tainted 5.16.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:27816 pid:28727 ppid: 6819 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6385
__mutex_lock_common kernel/locking/mutex.c:680 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740
kvm_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1783 [inline]
kvm_vm_ioctl_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1796 [inline]
kvm_vm_ioctl+0x507/0x23d0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4293
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: 0033:0x7fa3172eb8a7
RSP: 002b:00007fa31485f5f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000020000000 RCX: 00007fa3172eb8a7
RDX: 00007fa31485fd30 RSI: 000000004020ae46 RDI: 0000000000000004
RBP: 0000000000000004 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000fec00000
R13: 00007fa31485fd30 R14: 000000000000000d R15: 000000002000c000
INFO: task syz-executor.3:28782 blocked for more than 143 seconds.
Not tainted 5.16.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:27824 pid:28782 ppid: 6819 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x174/0x270 kernel/sched/completion.c:138
__synchronize_srcu+0x1f2/0x290 kernel/rcu/srcutree.c:930
install_new_memslots+0x312/0x570 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1471
kvm_set_memslot+0xdfe/0x1a40 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1605
__kvm_set_memory_region+0xc1c/0x13d0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1763
kvm_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1784 [inline]
kvm_vm_ioctl_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1796 [inline]
kvm_vm_ioctl+0x512/0x23d0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4293
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: 0033:0x7fa3172eb8a7
RSP: 002b:00007fa3147fc5f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000020000000 RCX: 00007fa3172eb8a7
RDX: 00007fa3147fcd30 RSI: 000000004020ae46 RDI: 0000000000000004
RBP: 0000000000000004 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000fec00000
R13: 00007fa3147fcd30 R14: 000000000000000f R15: 000000002000e000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bb83ca0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
1 lock held by in:imklog/6441:
#0: ffff88807a0c8ff0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
2 locks held by agetty/6465:
#0: ffff88801bbc0098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252
#1: ffffc90002a2f2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113
2 locks held by kworker/1:2/13789:
1 lock held by syz-executor.3/28727:
#0: ffffc900054310a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1783 [inline]
#0: ffffc900054310a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1796 [inline]
#0: ffffc900054310a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl+0x507/0x23d0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4293
1 lock held by syz-executor.3/28782:
#0: ffffc900054310a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1783 [inline]
#0: ffffc900054310a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl_set_memory_region arch/x86/kvm/../../../virt/kvm/kvm_main.c:1796 [inline]
#0: ffffc900054310a8 (&kvm->slots_lock){+.+.}-{3:3}, at: kvm_vm_ioctl+0x507/0x23d0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4293
2 locks held by syz-executor.3/28786:
3 locks held by systemd-udevd/28814:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc2-syzkaller #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+0x1b3/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:295
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 8233 Comm: kworker/u4:5 Not tainted 5.16.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:mark_lock+0x6/0x17b0 kernel/locking/lockdep.c:4566
Code: ff c3 66 90 be 00 00 02 00 48 c7 c7 e0 66 2b 8f e8 6f c2 7b 02 48 98 c3 66 66 2e 0f 1f 84 00 00 00 00 00 90 41 57 41 56 41 55 <41> 54 41 89 d4 48 ba 00 00 00 00 00 fc ff df 55 53 48 81 ec 18 01
RSP: 0018:ffffc900169bf9c0 EFLAGS: 00000046
RAX: 0000000000000004 RBX: ffff888036b08a44 RCX: ffffffff815c54cd
RDX: 0000000000000002 RSI: ffff888036b08ab0 RDI: ffff888036b08000
RBP: ffff888036b08ad2 R08: 0000000000000000 R09: ffffffff8ff72adf
R10: 0000000000000001 R11: 0000000000000000 R12: ffff888036b08ab0
R13: ffff888036b08000 R14: ffff888036b08a60 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555f373565e0 CR3: 000000000b88e000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
mark_usage kernel/locking/lockdep.c:4514 [inline]
__lock_acquire+0x844/0x54a0 kernel/locking/lockdep.c:4981
lock_acquire kernel/locking/lockdep.c:5637 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
_raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:178
spin_lock_bh include/linux/spinlock.h:354 [inline]
batadv_nc_purge_paths+0xdf/0x3a0 net/batman-adv/network-coding.c:446
batadv_nc_worker+0x930/0xfa0 net/batman-adv/network-coding.c:726
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: ff c3 inc %ebx
2: 66 90 xchg %ax,%ax
4: be 00 00 02 00 mov $0x20000,%esi
9: 48 c7 c7 e0 66 2b 8f mov $0xffffffff8f2b66e0,%rdi
10: e8 6f c2 7b 02 callq 0x27bc284
15: 48 98 cltq
17: c3 retq
18: 66 66 2e 0f 1f 84 00 data16 nopw %cs:0x0(%rax,%rax,1)
1f: 00 00 00 00
23: 90 nop
24: 41 57 push %r15
26: 41 56 push %r14
28: 41 55 push %r13
* 2a: 41 54 push %r12 <-- trapping instruction
2c: 41 89 d4 mov %edx,%r12d
2f: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx
36: fc ff df
39: 55 push %rbp
3a: 53 push %rbx
3b: 48 rex.W
3c: 81 .byte 0x81
3d: ec in (%dx),%al
3e: 18 01 sbb %al,(%rcx)