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AHgh+RqFngkx+i/4qF2fOy4i9JQHJVNvxDG1KPlzjfVBIniymV0hRY8QAF+uh0LeSGzJ5zfOnGxEeI3WKtgrbOg=@vger.kernel.org X-Gm-Message-State: AOJu0YyqcPiiebrizNEQjgpBFi7/2vwj4jiCPAxwtrjRFMrF2XodrlG9 CCiG3e6fpDcQ7YdzKiHgLUcwSPuscOzy7r2kK6ZLF5eVODaC7UHUZLeaHaud0QeGbJTkgDbL6jY ydXri+N5BtbBRNaeuFxI7C/BSKhlVaCYC3dy3ZeecriTMc8Ht9iENI9Yl6f8= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:f0b:b0:495:c607:b13d with SMTP id 5614622812f47-4b210968491mr816378b6e.2.1786489356698; Tue, 11 Aug 2026 16:02:36 -0700 (PDT) Date: Tue, 11 Aug 2026 16:02:36 -0700 In-Reply-To: <6a75205d.01d0871a.3a0d52.0034.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a7baa0c.d5f0ebe7.22d851.0002.GAE@google.com> Subject: Re: [syzbot] [wireless?] WARNING in cfg80211_wext_siwrate 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: a13307e97d5c Merge tag 'bpf-fixes' of git://git.kernel.org.. git tree: bpf console output: https://syzkaller.appspot.com/x/log.txt?x=1186e149580000 kernel config: https://syzkaller.appspot.com/x/.config?x=aaf0da806f995318 dashboard link: https://syzkaller.appspot.com/bug?extid=af177aa139efdd13a9da compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1077e479580000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+af177aa139efdd13a9da@syzkaller.appspotmail.com warning: `syz-executor384' uses wireless extensions which will stop working for Wi-Fi 7 hardware; use nl80211 ------------[ cut here ]------------ wlan3: 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#1: syz-executor384/5956 WARNING: net/mac80211/driver-ops.h:884 at ieee80211_set_bitrate_mask+0x1034/0x1320 net/mac80211/cfg.c:4134, CPU#1: syz-executor384/5956 Modules linked in: CPU: 1 UID: 0 PID: 5956 Comm: syz-executor384 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:drv_set_bitrate_mask net/mac80211/driver-ops.h:884 [inline] RIP: 0010:ieee80211_set_bitrate_mask+0x1084/0x1320 net/mac80211/cfg.c:4134 Code: 20 01 00 00 48 85 c0 49 0f 44 ee 48 b8 00 00 00 00 00 fc ff df 0f b6 04 03 84 c0 0f 85 3b 01 00 00 41 8b 17 4c 89 ef 48 89 ee <67> 48 0f b9 3a e9 c3 fd ff ff e8 9d 71 82 f6 90 0f 0b 90 e9 41 fe RSP: 0018:ffffc9000374f778 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 1ffff1100ff9eb25 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: ffff88807fcf4120 RDI: ffffffff90698350 RBP: ffff88807fcf4120 R08: ffff888073d00faf R09: 1ffff1100e7a01f5 R10: dffffc0000000000 R11: ffffed100e7a01f6 R12: ffff888073d00740 R13: ffffffff90698350 R14: ffff88807fcf5938 R15: ffff88807fcf5928 FS: 000055555d18b400(0000) GS:ffff888125055000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0604dea286 CR3: 00000000784fe000 CR4: 00000000003526f0 Call Trace: rdev_set_bitrate_mask net/wireless/rdev-ops.h:683 [inline] cfg80211_wext_siwrate+0x78d/0x9d0 net/wireless/wext-compat.c:1238 ioctl_standard_call+0xc5/0x160 net/wireless/wext-core.c:1042 wireless_process_ioctl net/wireless/wext-core.c:-1 [inline] wext_ioctl_dispatch+0xee/0x410 net/wireless/wext-core.c:1013 wext_handle_ioctl+0x110/0x1d0 net/wireless/wext-core.c:1074 sock_ioctl+0x159/0x7e0 net/socket.c:1353 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3f2a1ec9eb Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00 RSP: 002b:00007fff6cea1560 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f3f2a1ec9eb RDX: 00007fff6cea15c0 RSI: 0000000000008b20 RDI: 0000000000000003 RBP: 00007fff6cea1640 R08: 0000000000000001 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff6cea15e0 R13: 00007f3f2a248aa1 R14: 00007f3f2a270cc0 R15: 0000000000000002 ---------------- Code disassembly (best guess): 0: 20 01 and %al,(%rcx) 2: 00 00 add %al,(%rax) 4: 48 85 c0 test %rax,%rax 7: 49 0f 44 ee cmove %r14,%rbp b: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 12: fc ff df 15: 0f b6 04 03 movzbl (%rbx,%rax,1),%eax 19: 84 c0 test %al,%al 1b: 0f 85 3b 01 00 00 jne 0x15c 21: 41 8b 17 mov (%r15),%edx 24: 4c 89 ef mov %r13,%rdi 27: 48 89 ee mov %rbp,%rsi * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: e9 c3 fd ff ff jmp 0xfffffdf7 34: e8 9d 71 82 f6 call 0xf68271d6 39: 90 nop 3a: 0f 0b ud2 3c: 90 nop 3d: e9 .byte 0xe9 3e: 41 rex.B 3f: fe .byte 0xfe --- 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.