syzbot

netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
ax25_connect(): syz-executor988 uses autobind, please contact jreuter@yaina.de
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refcount_t: decrement hit 0; leaking memory.
WARNING: CPU: 0 PID: 5311 at lib/refcount.c:31 refcount_warn_saturate+0xfa/0x1d0 lib/refcount.c:31
Modules linked in:
CPU: 0 UID: 0 PID: 5311 Comm: syz-executor988 Not tainted 6.14.0-rc7-syzkaller-00205-g586de92313fc #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:refcount_warn_saturate+0xfa/0x1d0 lib/refcount.c:31
Code: b2 00 00 00 e8 37 2d cc fc 5b 5d c3 cc cc cc cc e8 2b 2d cc fc c6 05 45 64 31 0b 01 90 48 c7 c7 40 b6 80 8c e8 07 e9 8b fc 90 <0f> 0b 90 90 eb d9 e8 0b 2d cc fc c6 05 22 64 31 0b 01 90 48 c7 c7
RSP: 0018:ffffc9000cf879c8 EFLAGS: 00010246
RAX: ba3f622b21131c00 RBX: ffff8880004e264c RCX: ffff88801d2f2440
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000004 R08: ffffffff81819e52 R09: 1ffff11003f8519a
R10: dffffc0000000000 R11: ffffed1003f8519b R12: ffff8880004e2608
R13: 0000000000000000 R14: ffff8880004e264c R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f842e6772d0 CR3: 000000000e938000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __refcount_dec include/linux/refcount.h:336 [inline]
 refcount_dec include/linux/refcount.h:351 [inline]
 ref_tracker_free+0x6af/0x7e0 lib/ref_tracker.c:236
 netdev_tracker_free include/linux/netdevice.h:4302 [inline]
 netdev_put include/linux/netdevice.h:4319 [inline]
 ax25_release+0x368/0x960 net/ax25/af_ax25.c:1080
 __sock_release net/socket.c:647 [inline]
 sock_close+0xbc/0x240 net/socket.c:1398
 __fput+0x3e9/0x9f0 fs/file_table.c:464
 task_work_run+0x24f/0x310 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0xa2a/0x2940 kernel/exit.c:938
 do_group_exit+0x207/0x2c0 kernel/exit.c:1087
 __do_sys_exit_group kernel/exit.c:1098 [inline]
 __se_sys_exit_group kernel/exit.c:1096 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1096
 x64_sys_call+0x26a8/0x26b0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f842e5f4229
Code: Unable to access opcode bytes at 0x7f842e5f41ff.
RSP: 002b:00007fff8addf488 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f842e5f4229
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001
RBP: 00007f842e674390 R08: ffffffffffffffb8 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000246 R12: 00007f842e674390
R13: 0000000000000000 R14: 00007f842e676ec0 R15: 00007f842e5c4890
 </TASK>