------------[ cut here ]------------
refcount_t: decrement hit 0; leaking memory.
WARNING: CPU: 0 PID: 9753 at lib/refcount.c:31 refcount_warn_saturate+0x1e8/0x20c lib/refcount.c:31
Modules linked in:
CPU: 0 PID: 9753 Comm: syz-executor.0 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 : ffff80009bbb7a30
x29: ffff80009bbb7a30 x28: dfff800000000000 x27: ffff0000eaf2e080
x26: dfff800000000000 x25: ffff700013776f50 x24: ffff0000ce50ca08
x23: ffff0000cc0e6800 x22: ffff80009bbb7aa0 x21: 0000000000000004
x20: ffff0000c9754664 x19: ffff800091f47000 x18: 0000000000000008
x17: 0000000000000000 x16: ffff80008adadb00 x15: ffff700011dde634
x14: 1ffff00011dde634 x13: 0000000000000004 x12: ffffffffffffffff
x11: 0000000000000002 x10: 0000000000ff0100 x9 : 2db2a17fbd07d300
x8 : 2db2a17fbd07d300 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80009bbb7198 x4 : ffff80008ef650a0 x3 : ffff80008036f97c
x2 : 0000000000000000 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_sync+0x60/0x9c fs/file_table.c:507
 __do_sys_close fs/open.c:1556 [inline]
 __se_sys_close fs/open.c:1541 [inline]
 __arm64_sys_close+0x150/0x1e0 fs/open.c:1541
 __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: 2672
hardirqs last  enabled at (2671): [<ffff8000803749b4>] __up_console_sem kernel/printk/printk.c:341 [inline]
hardirqs last  enabled at (2671): [<ffff8000803749b4>] __console_unlock kernel/printk/printk.c:2731 [inline]
hardirqs last  enabled at (2671): [<ffff8000803749b4>] console_unlock+0x17c/0x3d4 kernel/printk/printk.c:3050
hardirqs last disabled at (2672): [<ffff80008ae6da08>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:470
softirqs last  enabled at (2638): [<ffff800089f3e638>] spin_unlock_bh include/linux/spinlock.h:396 [inline]
softirqs last  enabled at (2638): [<ffff800089f3e638>] ax25_cb_del+0x14c/0x198 net/ax25/af_ax25.c:70
softirqs last disabled at (2636): [<ffff800089f3e51c>] spin_lock_bh include/linux/spinlock.h:356 [inline]
softirqs last disabled at (2636): [<ffff800089f3e51c>] ax25_cb_del+0x30/0x198 net/ax25/af_ax25.c:65
---[ end trace 0000000000000000 ]---