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AJvYcCX2Q0FWFCfJ2qQ43RS0GTtrtA37afHqSvHSqCncJ8AojWTyhEbDZ9UozyMPO7ZqgQk62aaeJY31Q5UGfok=@vger.kernel.org X-Gm-Message-State: AOJu0YxI2s98J2t4+/vsNBFbHmCm3se10BH7fjyQZiM981EZkdNUoqsw nFoyVwiQ5AYs9+10Dy0WKVXP080+BzROVOHcVbEX4DemuhsAw+fnBwmOS+PlVeRJQoWslrPZ67O 64USWp1/JL2w1BQOAln97zdGXfKKzC7cBpdFKtbi+esFxWlw1xJ6Fw9gSQ3s= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:981:b0:65c:ffb8:436 with SMTP id 006d021491bc7-661179d8882mr1209633eaf.38.1768557722197; Fri, 16 Jan 2026 02:02:02 -0800 (PST) Date: Fri, 16 Jan 2026 02:02:02 -0800 In-Reply-To: <20260116093944.1224799-1-kartikey406@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <696a0c9a.050a0220.58bed.0047.GAE@google.com> Subject: Re: [syzbot] [hams?] memory leak in nr_add_node From: syzbot To: kartikey406@gmail.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: memory leak in nr_add_node BUG: memory leak unreferenced object 0xffff88811385dec0 (size 64): comm "syz.0.17", pid 6752, jiffies 4294948986 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ cc cc cc cc cc cc 02 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 21d35625): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4958 [inline] slab_alloc_node mm/slub.c:5263 [inline] __kmalloc_cache_noprof+0x3b2/0x570 mm/slub.c:5771 kmalloc_noprof include/linux/slab.h:957 [inline] nr_add_node+0x7f3/0x1600 net/netrom/nr_route.c:153 nr_rt_ioctl+0xaec/0x1410 net/netrom/nr_route.c:682 nr_ioctl+0x11f/0x1a0 net/netrom/af_netrom.c:1257 sock_do_ioctl+0x84/0x1a0 net/socket.c:1254 sock_ioctl+0x149/0x480 net/socket.c:1375 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __x64_sys_ioctl+0xf4/0x140 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xa4/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f BUG: memory leak unreferenced object 0xffff88811385d980 (size 64): comm "syz.0.18", pid 6754, jiffies 4294949002 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ cc cc cc cc cc cc 02 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 564d84d5): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4958 [inline] slab_alloc_node mm/slub.c:5263 [inline] __kmalloc_cache_noprof+0x3b2/0x570 mm/slub.c:5771 kmalloc_noprof include/linux/slab.h:957 [inline] nr_add_node+0x7f3/0x1600 net/netrom/nr_route.c:153 nr_rt_ioctl+0xaec/0x1410 net/netrom/nr_route.c:682 nr_ioctl+0x11f/0x1a0 net/netrom/af_netrom.c:1257 sock_do_ioctl+0x84/0x1a0 net/socket.c:1254 sock_ioctl+0x149/0x480 net/socket.c:1375 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __x64_sys_ioctl+0xf4/0x140 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xa4/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f BUG: memory leak unreferenced object 0xffff88810a38c900 (size 64): comm "syz.0.19", pid 6756, jiffies 4294949018 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ cc cc cc cc cc cc 02 00 00 00 00 00 00 00 00 00 ................ backtrace (crc cde8c8ba): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4958 [inline] slab_alloc_node mm/slub.c:5263 [inline] __kmalloc_cache_noprof+0x3b2/0x570 mm/slub.c:5771 kmalloc_noprof include/linux/slab.h:957 [inline] nr_add_node+0x7f3/0x1600 net/netrom/nr_route.c:153 nr_rt_ioctl+0xaec/0x1410 net/netrom/nr_route.c:682 nr_ioctl+0x11f/0x1a0 net/netrom/af_netrom.c:1257 sock_do_ioctl+0x84/0x1a0 net/socket.c:1254 sock_ioctl+0x149/0x480 net/socket.c:1375 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __x64_sys_ioctl+0xf4/0x140 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xa4/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f connection error: failed to recv *flatrpc.ExecutorMessageRawT: EOF Tested on: commit: 983d014a kernel: modules: Add SPDX license identifier .. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=10b55522580000 kernel config: https://syzkaller.appspot.com/x/.config?x=87bc41cae23d2144 dashboard link: https://syzkaller.appspot.com/bug?extid=3f2d46b6e62b8dd546d3 compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 patch: https://syzkaller.appspot.com/x/patch.diff?x=13b3339a580000