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AJvYcCXg8NgV9KlwkG2Z60fIZngP90jCApaclRuQ5fajOykP7YXnEi/x4pVFac3hmAtR1+KHQGcGs1nhnmMv@vger.kernel.org X-Gm-Message-State: AOJu0Yw15Fif2De8OUD/WepUYIYUTyq3MtD22Q/1YRLz5UccZ6/0eo9U mXVcVU2LPB4+pb9/VShjWocThkcHyTpsWpq8dsB8vuG48JH8gnXfycYSSlSgYlBtxVzuGSwaA2o Yu/TY1KuM4HTD7AFtnvOrQ/a18UBR27fKRzMpRyUmnF9UV77C8qJA6eaw9Os= X-Google-Smtp-Source: AGHT+IGX+yKtSj+JzzsB0n6KIsgUET53Ks5lrcXKQf7kZZ+8PzzchxgMZ6WrdhrXxq9KKZhuN+vOkxVX9QyKZIFTVuXxcDg8zjWj Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1909:b0:3e5:4e4f:65df with SMTP id e9e14a558f8ab-4209e64b9dfmr331225ab.9.1757604865442; Thu, 11 Sep 2025 08:34:25 -0700 (PDT) Date: Thu, 11 Sep 2025 08:34:25 -0700 In-Reply-To: <68232e7b.050a0220.f2294.09f6.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68c2ec01.050a0220.3c6139.003f.GAE@google.com> Subject: Re: [syzbot] [rdma?] WARNING in gid_table_release_one (3) From: syzbot To: edwards@nvidia.com, jgg@ziepe.ca, leon@kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" syzbot has found a reproducer for the following issue on: HEAD commit: 5f540c4aade9 Add linux-next specific files for 20250910 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=157dab12580000 kernel config: https://syzkaller.appspot.com/x/.config?x=5ed48faa2cb8510d dashboard link: https://syzkaller.appspot.com/bug?extid=b0da83a6c0e2e2bddbd4 compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15b52362580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16b41642580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/df0dfb072f52/disk-5f540c4a.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/20649042ae30/vmlinux-5f540c4a.xz kernel image: https://storage.googleapis.com/syzbot-assets/4c16358268b8/bzImage-5f540c4a.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+b0da83a6c0e2e2bddbd4@syzkaller.appspotmail.com ------------[ cut here ]------------ GID entry ref leak for dev syz1 index 2 ref=615 WARNING: drivers/infiniband/core/cache.c:809 at release_gid_table drivers/infiniband/core/cache.c:806 [inline], CPU#0: kworker/u8:2/36 WARNING: drivers/infiniband/core/cache.c:809 at gid_table_release_one+0x346/0x4d0 drivers/infiniband/core/cache.c:886, CPU#0: kworker/u8:2/36 Modules linked in: CPU: 0 UID: 0 PID: 36 Comm: kworker/u8:2 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 Workqueue: ib-unreg-wq ib_unregister_work RIP: 0010:release_gid_table drivers/infiniband/core/cache.c:806 [inline] RIP: 0010:gid_table_release_one+0x346/0x4d0 drivers/infiniband/core/cache.c:886 Code: e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 75 3d 41 8b 0e 48 c7 c7 a0 43 91 8c 4c 89 e6 44 89 fa e8 fb 67 f5 f8 90 <0f> 0b 90 90 e9 e3 fe ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c RSP: 0018:ffffc90000ac7908 EFLAGS: 00010246 RAX: 621d731dcb27e200 RBX: ffff88806241b8d8 RCX: ffff888141289e40 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 RBP: 1ffff1100c48371b R08: ffff8880b8724253 R09: 1ffff110170e484a R10: dffffc0000000000 R11: ffffed10170e484b R12: ffff888027503e00 R13: ffff88806241b800 R14: ffff8880289a2400 R15: 0000000000000002 FS: 0000000000000000(0000) GS:ffff8881259f0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555569847588 CR3: 00000000338c8000 CR4: 00000000003526f0 Call Trace: ib_device_release+0xd2/0x1c0 drivers/infiniband/core/device.c:509 device_release+0x99/0x1c0 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+0x228/0x480 lib/kobject.c:737 process_one_work kernel/workqueue.c:3263 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x47c/0x820 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 --- If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing.