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AHgh+Rodz+j7+dKqM8iGKziUMNWKZQcHcdm8jngYCBw2O2eKQmuvnbPKokwdx+BJrykVF31m1/q685jMI37Chhc=@vger.kernel.org X-Gm-Message-State: AFuF++n0gyqGEjH1mMjq8tWBnPMYUSQI+7nlhO4Kw95+U2ksniu5YsAF vRDjINXLBn6VkyATEuk/BnbYO3QALVt0sm2jLl8YStneZnhYY620YjfMTy2OMMQqEJHb4enf/BZ 0DwvLAlvAmER/YIOjdiBx7NnxFsT7p2K51tcKbb+53cYSt7SbFL9f/ZURepk= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:2016:b0:6ae:4d57:a5fe with SMTP id 006d021491bc7-6b16b4cc8e2mr11588208eaf.20.1787503947074; Sun, 23 Aug 2026 09:52:27 -0700 (PDT) Date: Sun, 23 Aug 2026 09:52:27 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a8b254b.91706f20.16b6e3.02c9.GAE@google.com> Subject: [syzbot] [wireless?] memory leak in ieee80211_mesh_csa_beacon From: syzbot To: johannes@sipsolutions.net, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: bd5f485f3f02 Merge tag 'soc-arm-7.3' of git://git.kernel.o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16795679580000 kernel config: https://syzkaller.appspot.com/x/.config?x=82c3db8c83e3e016 dashboard link: https://syzkaller.appspot.com/bug?extid=f5752cd6b94fe38be666 compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17913a25580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/5cb73cc49d3d/disk-bd5f485f.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/dec5db798cfd/vmlinux-bd5f485f.xz kernel image: https://storage.googleapis.com/syzbot-assets/a7a15e3d5e4d/bzImage-bd5f485f.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+f5752cd6b94fe38be666@syzkaller.appspotmail.com 2026/08/19 20:15:25 executed programs: 5 BUG: memory leak unreferenced object 0xffff88810a69b000 (size 1024): comm "syz.0.19", pid 5915, jiffies 4294944112 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ d8 23 c0 25 81 88 ff ff 00 00 00 00 00 00 00 00 .#.%............ backtrace (crc 46b98ecb): kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline] slab_post_alloc_hook mm/slub.c:4597 [inline] slab_alloc_node mm/slub.c:4917 [inline] __kmalloc_cache_noprof+0x359/0x440 mm/slub.c:5485 _kmalloc_noprof include/linux/slab.h:988 [inline] ieee80211_mesh_csa_beacon+0x2e/0x100 net/mac80211/mesh.c:1547 ieee80211_set_csa_beacon net/mac80211/cfg.c:4674 [inline] __ieee80211_channel_switch+0xb22/0xed0 net/mac80211/cfg.c:4795 rdev_channel_switch net/wireless/rdev-ops.h:1168 [inline] nl80211_channel_switch+0x39b/0x780 net/wireless/nl80211.c:12234 genl_family_rcv_msg_doit+0x12e/0x1a0 net/netlink/genetlink.c:1114 genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline] genl_rcv_msg+0x302/0x440 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x89/0x1c0 net/netlink/af_netlink.c:2556 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x38f/0x4e0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x335/0x690 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec net/socket.c:800 [inline] __sock_sendmsg net/socket.c:815 [inline] ____sys_sendmsg+0x54a/0x580 net/socket.c:2709 ___sys_sendmsg+0x101/0x140 net/socket.c:2763 __sys_sendmsg+0xcd/0x140 net/socket.c:2795 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0xe9/0x530 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f connection error: failed to recv *flatrpc.ExecutorMessageRawT: EOF --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title 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. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup