------------[ cut here ]------------
refcount_t: decrement hit 0; leaking memory.
WARNING: CPU: 1 PID: 6244 at lib/refcount.c:31 refcount_warn_saturate+0x1e8/0x20c lib/refcount.c:31
Modules linked in:
CPU: 1 PID: 6244 Comm: syz-executor271 Not tainted 6.9.0-rc4-syzkaller-g6a71d2909427 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
pstate: 60401005 (nZCv daif +PAN -UAO -TCO -DIT +SSBS BTYPE=--)
pc : refcount_warn_saturate+0x1e8/0x20c lib/refcount.c:31
lr : refcount_warn_saturate+0x1e8/0x20c lib/refcount.c:31
sp : ffff80009abe7810
x29: ffff80009abe7810 x28: dfff800000000000 x27: ffff0000d4946080
x26: dfff800000000000 x25: ffff70001357cf0c x24: ffff0000cd760608
x23: ffff0000d7138800 x22: ffff80009abe7880 x21: 0000000000000004
x20: ffff0000d7eba664 x19: ffff800091f47000 x18: 0000000000000008
x17: 0000000000000000 x16: ffff80008ae725bc x15: 0000000000000001
x14: 1fffe000367bde02 x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000000002 x10: 0000000000ff0100 x9 : d15365c1165c7c00
x8 : d15365c1165c7c00 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80009abe6f78 x4 : ffff80008ef650a0 x3 : ffff8000805e616c
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000
Call trace:
 refcount_warn_saturate+0x1e8/0x20c lib/refcount.c:31
 __refcount_dec include/linux/refcount.h:336 [inline]
 refcount_dec include/linux/refcount.h:351 [inline]
 ref_tracker_free+0x550/0x6ac lib/ref_tracker.c:236
 netdev_tracker_free include/linux/netdevice.h:4084 [inline]
 netdev_put include/linux/netdevice.h:4101 [inline]
 ax25_release+0x350/0x8ac net/ax25/af_ax25.c:1069
 __sock_release net/socket.c:659 [inline]
 sock_close+0xa4/0x1e8 net/socket.c:1421
 __fput+0x30c/0x738 fs/file_table.c:422
 ____fput+0x20/0x30 fs/file_table.c:450
 task_work_run+0x230/0x2e0 kernel/task_work.c:180
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0x4e4/0x1ac8 kernel/exit.c:878
 do_group_exit+0x194/0x22c kernel/exit.c:1027
 __do_sys_exit_group kernel/exit.c:1038 [inline]
 __se_sys_exit_group kernel/exit.c:1036 [inline]
 pid_child_should_wake+0x0/0x1dc kernel/exit.c:1036
 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598
irq event stamp: 11596
hardirqs last  enabled at (11595): [<ffff8000803749b4>] __up_console_sem kernel/printk/printk.c:341 [inline]
hardirqs last  enabled at (11595): [<ffff8000803749b4>] __console_unlock kernel/printk/printk.c:2731 [inline]
hardirqs last  enabled at (11595): [<ffff8000803749b4>] console_unlock+0x17c/0x3d4 kernel/printk/printk.c:3050
hardirqs last disabled at (11596): [<ffff80008ae6da08>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:470
softirqs last  enabled at (11562): [<ffff800089f3e638>] spin_unlock_bh include/linux/spinlock.h:396 [inline]
softirqs last  enabled at (11562): [<ffff800089f3e638>] ax25_cb_del+0x14c/0x198 net/ax25/af_ax25.c:70
softirqs last disabled at (11560): [<ffff800089f3e51c>] spin_lock_bh include/linux/spinlock.h:356 [inline]
softirqs last disabled at (11560): [<ffff800089f3e51c>] ax25_cb_del+0x30/0x198 net/ax25/af_ax25.c:65
---[ end trace 0000000000000000 ]---