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AHgh+RpNIF02uaB+kbFgmtIPP+8/eoQcKcxJ7LJvVFBcXNt3M7u4YkCCTxu8kpSh1YSvL8zk2hNogSJKbf6MKao=@vger.kernel.org X-Gm-Message-State: AOJu0Yz3Wp3EtXAPODWLfx6K/3GxuDCx9oNFrVJZVZo9k5f4U2jA8sRK kBnXkAEDJkrvCc0AZhW7B+ohLH01oTD3yM8LcKlXnBbVeW6MslG/sw9DTE7ni0OI7GpeBjjUPlD laJKU01Nn85Y93GHYwzKHjIns67/LMsAh9eex+C69K2IOuFxiY2cf0PUHm8I= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:8582:10b0:6aa:e573:9ce0 with SMTP id 006d021491bc7-6b0d61d0f52mr15648436eaf.16.1786968516153; Mon, 17 Aug 2026 05:08:36 -0700 (PDT) Date: Mon, 17 Aug 2026 05:08:36 -0700 In-Reply-To: <6a63df97.a2ea2cc8.fbad6.000a.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a82f9c4.dbb3a75c.20434b.0056.GAE@google.com> Subject: Re: [syzbot] [wireless?] WARNING in nl80211_set_tx_bitrate_mask 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" syzbot has found a reproducer for the following issue on: HEAD commit: 8d3ae59288f1 Linux 7.2 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=10dc0679580000 kernel config: https://syzkaller.appspot.com/x/.config?x=1d67342c314f228d dashboard link: https://syzkaller.appspot.com/bug?extid=dcaca020ca8377e7ced0 compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11fdd949580000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+dcaca020ca8377e7ced0@syzkaller.appspotmail.com ------------[ cut here ]------------ wlan2: Failed check-sdata-in-driver check, flags: 0x0 WARNING: net/mac80211/driver-ops.h:884 at drv_set_bitrate_mask net/mac80211/driver-ops.h:884 [inline], CPU#2: syz-executor202/6039 WARNING: net/mac80211/driver-ops.h:884 at ieee80211_set_bitrate_mask+0x888/0xe20 net/mac80211/cfg.c:4134, CPU#2: syz-executor202/6039 Modules linked in: CPU: 2 UID: 0 PID: 6039 Comm: syz-executor202 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:drv_set_bitrate_mask net/mac80211/driver-ops.h:884 [inline] RIP: 0010:ieee80211_set_bitrate_mask+0x88f/0xe20 net/mac80211/cfg.c:4134 Code: 02 00 00 e8 23 6b d6 f6 48 8b 34 24 48 81 c6 20 01 00 00 48 89 34 24 e8 0f 6b d6 f6 48 8d 3d c8 80 1f 06 48 8b 34 24 44 89 ea <67> 48 0f b9 3a e9 f7 fd ff ff e8 f2 6a d6 f6 48 8d bb 50 08 00 00 RSP: 0018:ffffc90003c973f0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff88803e5f0740 RCX: ffffffff8b340832 RDX: 0000000000000000 RSI: ffff88805720c120 RDI: ffffffff91538960 RBP: ffff88805720d928 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88803e5f0740 R13: 0000000000000000 R14: ffff88805720c000 R15: ffffc90003c97488 FS: 000055556bc9e400(0000) GS:ffff8880d5dde000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fee5f7dfe9c CR3: 000000003e24f000 CR4: 0000000000352ef0 Call Trace: rdev_set_bitrate_mask net/wireless/rdev-ops.h:683 [inline] nl80211_set_tx_bitrate_mask+0x320/0x570 net/wireless/nl80211.c:14541 genl_family_rcv_msg_doit+0x214/0x300 net/netlink/genetlink.c:1114 genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline] genl_rcv_msg+0x560/0x800 net/netlink/genetlink.c:1209 netlink_rcv_skb+0x159/0x420 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+0x585/0x850 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x8b0/0xda0 net/netlink/af_netlink.c:1900 sock_sendmsg_nosec net/socket.c:775 [inline] __sock_sendmsg net/socket.c:790 [inline] __sys_sendto+0x48b/0x4e0 net/socket.c:2252 __do_sys_sendto net/socket.c:2259 [inline] __se_sys_sendto net/socket.c:2255 [inline] __x64_sys_sendto+0xe0/0x1c0 net/socket.c:2255 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4b1b84a677 Code: 48 89 fa 4c 89 df e8 98 1d 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff RSP: 002b:00007ffe1ffacce0 EFLAGS: 00000202 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 000055556bc9e400 RCX: 00007f4b1b84a677 RDX: 000000000000001c RSI: 00007ffe1ffacd40 RDI: 0000000000000003 RBP: 00007ffe1ffacd40 R08: 00007ffe1ffacd34 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000028 R13: 0000000000000003 R14: 0000000000000026 R15: 00007f4b1b888ed3 ---------------- Code disassembly (best guess): 0: 02 00 add (%rax),%al 2: 00 e8 add %ch,%al 4: 23 6b d6 and -0x2a(%rbx),%ebp 7: f6 48 8b 34 testb $0x34,-0x75(%rax) b: 24 48 and $0x48,%al d: 81 c6 20 01 00 00 add $0x120,%esi 13: 48 89 34 24 mov %rsi,(%rsp) 17: e8 0f 6b d6 f6 call 0xf6d66b2b 1c: 48 8d 3d c8 80 1f 06 lea 0x61f80c8(%rip),%rdi # 0x61f80eb 23: 48 8b 34 24 mov (%rsp),%rsi 27: 44 89 ea mov %r13d,%edx * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: e9 f7 fd ff ff jmp 0xfffffe2b 34: e8 f2 6a d6 f6 call 0xf6d66b2b 39: 48 8d bb 50 08 00 00 lea 0x850(%rbx),%rdi --- 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.