__do_sys_unshare kernel/fork.c:3384 [inline]
     __se_sys_unshare kernel/fork.c:3382 [inline]
     __arm64_sys_unshare+0x3c/0x50 kernel/fork.c:3382
     __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
     invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
     el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
     do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
------------[ cut here ]------------
WARNING: CPU: 1 PID: 286 at lib/ref_tracker.c:179 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
WARNING: CPU: 1 PID: 286 at lib/ref_tracker.c:179 ref_tracker_dir_exit+0x390/0x4b4 lib/ref_tracker.c:178
Modules linked in:
CPU: 1 UID: 0 PID: 286 Comm: kworker/u8:4 Not tainted 6.12.0-syzkaller-g7b1d1d4cfac0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: netns cleanup_net
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : ref_tracker_dir_exit+0x390/0x4b4 include/linux/spinlock.h:406
lr : spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
lr : ref_tracker_dir_exit+0x390/0x4b4 lib/ref_tracker.c:178
sp : ffff80009bee7900
x29: ffff80009bee7980 x28: ffff0000ed941f58 x27: 1ffff000137dcf24
x26: dfff800000000000 x25: ffff0000ed941fa8 x24: dead000000000100
x23: ffff0000ed941fa8 x22: ffff0000ed941f58 x21: ffff0000ed941fa8
x20: ffff0000ed941fa8 x19: 1fffe0001a0aa0d0 x18: ffff80009bee7240
x17: 0000000000025e61 x16: ffff8000802a7fe0 x15: 0000000000000001
x14: 1fffe0001d670e17 x13: 0000000000000000 x12: 0000000000000000
x11: ffff60001d670e18 x10: 0000000000ff0100 x9 : 0000000000000001
x8 : 0000000000000008 x7 : 0000000000000000 x6 : 0000000000000000
x5 : ffff80009364d108 x4 : 0000000000000008 x3 : ffff8000801f628c
x2 : 0000000000000001 x1 : 0000000000000002 x0 : 0000000000000001
Call trace:
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] (P)
 ref_tracker_dir_exit+0x390/0x4b4 lib/ref_tracker.c:178 (P)
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] (L)
 ref_tracker_dir_exit+0x390/0x4b4 lib/ref_tracker.c:178 (L)
 net_free+0x80/0xf4 net/core/net_namespace.c:452
 cleanup_net+0x90c/0x9b4 net/core/net_namespace.c:647
 process_one_work+0x7bc/0x1600 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x97c/0xeec kernel/workqueue.c:3391
 kthread+0x288/0x310 kernel/kthread.c:389
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862
irq event stamp: 612506
hardirqs last  enabled at (612505): [<ffff80008b5a7504>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
hardirqs last  enabled at (612505): [<ffff80008b5a7504>] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194
hardirqs last disabled at (612506): [<ffff80008b4b302c>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:488
softirqs last  enabled at (612500): [<ffff80008020396c>] softirq_handle_end kernel/softirq.c:400 [inline]
softirqs last  enabled at (612500): [<ffff80008020396c>] handle_softirqs+0xa38/0xbf8 kernel/softirq.c:582
softirqs last disabled at (612323): [<ffff800080020db4>] __do_softirq+0x14/0x20 kernel/softirq.c:588
---[ end trace 0000000000000000 ]---
ip6_tunnel: ip6gretap1 xmit: Local address not yet configured!