------------[ cut here ]------------ GID entry ref leak for dev syz1 index 2 ref=1 WARNING: CPU: 0 PID: 133 at drivers/infiniband/core/cache.c:809 release_gid_table drivers/infiniband/core/cache.c:806 [inline] WARNING: CPU: 0 PID: 133 at drivers/infiniband/core/cache.c:809 gid_table_release_one+0x30f/0x490 drivers/infiniband/core/cache.c:886 Modules linked in: CPU: 0 PID: 133 Comm: kworker/u4:5 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Workqueue: netns cleanup_net RIP: 0010:release_gid_table drivers/infiniband/core/cache.c:806 [inline] RIP: 0010:gid_table_release_one+0x30f/0x490 drivers/infiniband/core/cache.c:886 Code: 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 75 3c 41 8b 0e 48 c7 c7 20 11 86 8b 48 8b 74 24 20 44 89 fa e8 91 b5 af f9 <0f> 0b e9 14 ff ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 1a ff RSP: 0000:ffffc90002d178a8 EFLAGS: 00010246 RAX: 27e7615fdaebd300 RBX: ffff88802597fcd8 RCX: ffff888018f50000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 RBP: 1ffff11004b2ff80 R08: ffffc90002d174a7 R09: 1ffff920005a2e94 R10: dffffc0000000000 R11: fffff520005a2e95 R12: 1ffff11004b2ff9b R13: ffff88802597fc00 R14: ffff888030e4b900 R15: 0000000000000002 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f18e563e000 CR3: 0000000023ec7000 CR4: 00000000003526f0 Call Trace: ib_device_release+0xd2/0x1b0 drivers/infiniband/core/device.c:498 device_release+0x96/0x1c0 drivers/base/core.c:-1 kobject_cleanup lib/kobject.c:689 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x221/0x470 lib/kobject.c:737 rdma_dev_exit_net+0x20c/0x330 drivers/infiniband/core/device.c:1156 ops_exit_list net/core/net_namespace.c:173 [inline] cleanup_net+0x6f4/0xb90 net/core/net_namespace.c:652 process_one_work kernel/workqueue.c:2634 [inline] process_scheduled_works+0xa45/0x15b0 kernel/workqueue.c:2711 worker_thread+0xa55/0xfc0 kernel/workqueue.c:2792 kthread+0x2fa/0x390 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293