INFO: task syz.2.832:7272 blocked for more than 428 seconds.
      Not tainted 6.12.0-rc6-syzkaller-g57f7c7dc78cd #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.832       state:D stack:0     pid:7272  tgid:7271  ppid:5952   flags:0x00000006
Call Trace:
[<ffffffff8608aa96>] context_switch kernel/sched/core.c:5328 [inline]
[<ffffffff8608aa96>] __schedule+0xd58/0x3848 kernel/sched/core.c:6690
[<ffffffff8608d64a>] __schedule_loop kernel/sched/core.c:6767 [inline]
[<ffffffff8608d64a>] schedule+0xc4/0x324 kernel/sched/core.c:6782
[<ffffffff8608df94>] schedule_preempt_disabled+0x16/0x28 kernel/sched/core.c:6839
[<ffffffff86096f6a>] rwsem_down_read_slowpath+0x56a/0x91e kernel/locking/rwsem.c:1084
[<ffffffff860979c0>] __down_read_common kernel/locking/rwsem.c:1248 [inline]
[<ffffffff860979c0>] __down_read kernel/locking/rwsem.c:1261 [inline]
[<ffffffff860979c0>] down_read+0xe4/0x460 kernel/locking/rwsem.c:1526
[<ffffffff800d87ba>] mmap_read_lock include/linux/mmap_lock.h:144 [inline]
[<ffffffff800d87ba>] exit_mm kernel/exit.c:547 [inline]
[<ffffffff800d87ba>] do_exit+0x80e/0x2986 kernel/exit.c:926
[<ffffffff800dae92>] do_group_exit+0xd4/0x26c kernel/exit.c:1088
[<ffffffff8010d612>] get_signal+0x1e98/0x23b0 kernel/signal.c:2917
[<ffffffff8000bbb0>] arch_do_signal_or_restart+0x980/0x1188 arch/riscv/kernel/signal.c:437
[<ffffffff86081c14>] exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
[<ffffffff86081c14>] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
[<ffffffff86081c14>] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
[<ffffffff86081c14>] syscall_exit_to_user_mode+0x2a6/0x31e kernel/entry/common.c:218
[<ffffffff86080b36>] do_trap_ecall_u+0x86/0x216 arch/riscv/kernel/traps.c:345
[<ffffffff860a3aaa>] _new_vmalloc_restore_context_a0+0xc2/0xce

Showing all locks held in the system:
1 lock held by kthreadd/2:
1 lock held by kworker/R-mm_pe/13:
1 lock held by ksoftirqd/0/16:
1 lock held by khungtaskd/36:
 #0: ffffffff881cc080 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x68/0x2d6 kernel/locking/lockdep.c:6716
3 locks held by kworker/u10:4/62:
1 lock held by kswapd0/77:
2 locks held by syslogd/2971:
1 lock held by klogd/2975:
2 locks held by dhcpcd/3019:
1 lock held by dhcpcd/3021:
2 locks held by getty/3143:
 #0: ff600000182840a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3a/0x46 drivers/tty/tty_ldsem.c:340
 #1: ff2000000008b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xd7c/0x129a drivers/tty/n_tty.c:2211
2 locks held by sshd/3173:
1 lock held by kworker/u9:3/3313:
4 locks held by kworker/0:2/5328:
2 locks held by kworker/1:1/5460:
1 lock held by kworker/u10:3/5616:
5 locks held by kworker/u10:6/5759:
2 locks held by syz-executor/5941:
4 locks held by kworker/1:2/6092:
4 locks held by kworker/u10:0/6489:
 #0: ff6000001dcd3148 ((wq_completion)wg-kex-wg0#7){+.+.}-{0:0}, at: process_one_work+0x848/0x1dae kernel/workqueue.c:3204
 #1: ff200000031d7c90 ((work_completion)(&peer->transmit_handshake_work)){+.+.}-{0:0}, at: process_one_work+0x870/0x1dae kernel/workqueue.c:3204
 #2: ff60000032a39208 (&wg->static_identity.lock){++++}-{3:3}, at: wg_noise_handshake_create_initiation+0xe4/0x5f0 drivers/net/wireguard/noise.c:529
 #3: ff6000002a053b78 (&handshake->lock){++++}-{3:3}, at: wg_noise_handshake_create_initiation+0xee/0x5f0 drivers/net/wireguard/noise.c:530
3 locks held by kworker/u10:2/6522:
4 locks held by kworker/u10:7/6560:
 #0: ff60000029fa8948 ((wq_completion)wg-kex-wg1#7){+.+.}-{0:0}, at: process_one_work+0x848/0x1dae kernel/workqueue.c:3204
 #1: ff20000002cc7c90 ((work_completion)(&peer->transmit_handshake_work)){+.+.}-{0:0}, at: process_one_work+0x870/0x1dae kernel/workqueue.c:3204
 #2: ff60000032a3d208 (&wg->static_identity.lock){++++}-{3:3}, at: wg_noise_handshake_create_initiation+0xe4/0x5f0 drivers/net/wireguard/noise.c:529
 #3: ff6000002a0544d8 (&handshake->lock){++++}-{3:3}, at: wg_noise_handshake_create_initiation+0xee/0x5f0 drivers/net/wireguard/noise.c:530
2 locks held by kworker/0:4/6600:
2 locks held by kworker/u10:8/6685:
4 locks held by kworker/0:3/6824:
4 locks held by kworker/u10:1/6925:
4 locks held by kworker/u10:5/6941:
4 locks held by kworker/1:4/7005:
3 locks held by kworker/u8:2/7250:
 #0: ff6000005cdd3d18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:598 [inline]
 #0: ff6000005cdd3d18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1505 [inline]
 #0: ff6000005cdd3d18 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1804 [inline]
 #0: ff6000005cdd3d18 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x278/0x3848 kernel/sched/core.c:6589
 #1: ff20000001e27c90 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work+0x870/0x1dae kernel/workqueue.c:3204
 #2: ffffffff881cc080 (rcu_read_lock){....}-{1:2}, at: debug_object_activate+0x16a/0x378 lib/debugobjects.c:708
3 locks held by syz.3.831/7269:
2 locks held by syz.2.832/7271:
1 lock held by syz.2.832/7272:
 #0: ff60000018f3f008 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline]
 #0: ff60000018f3f008 (&mm->mmap_lock){++++}-{3:3}, at: exit_mm kernel/exit.c:547 [inline]
 #0: ff60000018f3f008 (&mm->mmap_lock){++++}-{3:3}, at: do_exit+0x80e/0x2986 kernel/exit.c:926

=============================================

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 36 Comm: khungtaskd Not tainted 6.12.0-rc6-syzkaller-g57f7c7dc78cd #0
Hardware name: riscv-virtio,qemu (DT)
Call Trace:
[<ffffffff80010a0c>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:130
[<ffffffff86023314>] show_stack+0x34/0x40 arch/riscv/kernel/stacktrace.c:136
[<ffffffff8607e98a>] __dump_stack lib/dump_stack.c:94 [inline]
[<ffffffff8607e98a>] dump_stack_lvl+0x122/0x196 lib/dump_stack.c:120
[<ffffffff8607ea1a>] dump_stack+0x1c/0x24 lib/dump_stack.c:129
[<ffffffff85fe69fa>] nmi_cpu_backtrace+0x39c/0x39e lib/nmi_backtrace.c:113
[<ffffffff85fe6cb2>] nmi_trigger_cpumask_backtrace+0x2b6/0x456 lib/nmi_backtrace.c:62
[<ffffffff8001996c>] arch_trigger_cpumask_backtrace+0x2c/0x3c arch/riscv/kernel/smp.c:347
[<ffffffff80432008>] trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
[<ffffffff80432008>] check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
[<ffffffff80432008>] watchdog+0xcfa/0x1178 kernel/hung_task.c:379
[<ffffffff80154924>] kthread+0x28c/0x3a6 kernel/kthread.c:389
[<ffffffff860a3bc2>] ret_from_fork+0xe/0x18 arch/riscv/kernel/entry.S:326
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 6941 Comm: kworker/u10:5 Not tainted 6.12.0-rc6-syzkaller-g57f7c7dc78cd #0
Hardware name: riscv-virtio,qemu (DT)
Workqueue: wg-kex-wg2 wg_packet_handshake_send_worker
epc : kasan_save_stack+0x0/0x6a mm/kasan/common.c:43
 ra : kasan_save_track+0x16/0x28 mm/kasan/common.c:68
epc : ffffffff8096f900 ra : ffffffff8096f994 sp : ff20000000007bd0
 gp : ffffffff899d48a0 tp : ff6000001b588000 t0 : ffebffff0324c617
 t1 : fffffffef21a3c0c t2 : 0000000000000001 s0 : ff20000000007bf0
 s1 : ff60000019263008 a0 : 0000000000000000 a1 : 0000000000000001
 a2 : 0000000000000007 a3 : ffebffff0324c617 a4 : 00000000000000fb
 a5 : 0000000000000000 a6 : ffffffffa6263000 a7 : 1fec0000036b1177
 s2 : ff6000007306cf00 s3 : ff60000019263000 s4 : ffffffff84de334c
 s5 : 0000000000000000 s6 : 0000000000000000 s7 : ffffffff89ad16c0
 s8 : 000003d1a0eca570 s9 : 0000000000002710 s10: ffffffff89a0e780
 s11: 1fec00000324c60b t3 : 1fec0000036b1163 t4 : fffffffef21a3c0c
 t5 : fffffffef21a3c0d t6 : 1fec0000036b1181
status: 0000000200000120 badaddr: 0000000000000000 cause: 8000000000000001
[<ffffffff8096f900>] rcu_read_unlock_sched include/linux/rcupdate.h:962 [inline]
[<ffffffff8096f900>] pfn_valid include/linux/mmzone.h:2044 [inline]
[<ffffffff8096f900>] kasan_save_stack+0x0/0x6a mm/kasan/common.c:37
[<ffffffff809726ee>] kasan_save_free_info+0x40/0x5a mm/kasan/generic.c:579
[<ffffffff8096fcb2>] poison_slab_object mm/kasan/common.c:247 [inline]
[<ffffffff8096fcb2>] __kasan_slab_free+0x4e/0x68 mm/kasan/common.c:264
[<ffffffff808da82e>] kasan_slab_free include/linux/kasan.h:230 [inline]
[<ffffffff808da82e>] slab_free_hook mm/slub.c:2342 [inline]
[<ffffffff808da82e>] slab_free mm/slub.c:4579 [inline]
[<ffffffff808da82e>] kmem_cache_free+0x244/0x5f4 mm/slub.c:4681
[<ffffffff84de334c>] dst_destroy+0x2aa/0x3cc net/core/dst.c:121
[<ffffffff84de348a>] dst_destroy_rcu+0x1c/0x2e net/core/dst.c:132
[<ffffffff802dee02>] rcu_do_batch kernel/rcu/tree.c:2567 [inline]
[<ffffffff802dee02>] rcu_core+0xa24/0x1eac kernel/rcu/tree.c:2823
[<ffffffff802e0698>] rcu_core_si+0xc/0x14 kernel/rcu/tree.c:2840
[<ffffffff800e0a66>] handle_softirqs+0x4a6/0x10de kernel/softirq.c:554
[<ffffffff860a3c9c>] __do_softirq+0x12/0x1a kernel/softirq.c:588
[<ffffffff80006f74>] ___do_softirq+0x18/0x20 arch/riscv/kernel/irq.c:85
[<ffffffff860a3bfe>] call_on_irq_stack+0x32/0x40 arch/riscv/kernel/entry.S:355