syzbot


WARNING in ieee80211_tdls_oper (3)

Status: upstream: reported C repro on 2026/03/09 17:57
Subsystems: wireless
[Documentation on labels]
Reported-by: syzbot+56b6a844a4ea74487b7b@syzkaller.appspotmail.com
First crash: 5d18h, last: 5d18h
Cause bisection: failed (error log, bisect log)
  
Discussions (3)
Title Replies (including bot) Last reply
[PATCH] wifi: mac80211: fix WARN_ON_ONCE in ieee80211_tdls_oper 3 (3) 2026/03/13 09:25
[PATCH v2] wifi: mac80211: check tdls flag in ieee80211_tdls_oper 1 (1) 2026/03/13 09:24
[syzbot] [wireless?] WARNING in ieee80211_tdls_oper (3) 0 (3) 2026/03/13 07:59
Similar bugs (2)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in ieee80211_tdls_oper (2) wireless -1 C 2 170d 169d 0/29 auto-obsoleted due to no activity on 2026/01/03 09:18
upstream WARNING in ieee80211_tdls_oper wireless -1 C 6 282d 306d 29/29 fixed on 2025/09/04 16:57
Last patch testing requests (2)
Created Duration User Patch Repo Result
2026/03/13 07:59 24m kartikey406@gmail.com patch upstream OK log
2026/03/10 15:27 24m kartikey406@gmail.com patch upstream OK log

Sample crash report:
mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium
mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium
------------[ cut here ]------------
is_zero_ether_addr(sdata->u.mgd.tdls_peer) || !ether_addr_equal(sdata->u.mgd.tdls_peer, peer)
WARNING: net/mac80211/tdls.c:1461 at ieee80211_tdls_oper+0x38f/0x680 net/mac80211/tdls.c:1460, CPU#1: syz.0.446/6497
Modules linked in:
CPU: 1 UID: 0 PID: 6497 Comm: syz.0.446 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:ieee80211_tdls_oper+0x38f/0x680 net/mac80211/tdls.c:1460
Code: 6f 01 00 00 e8 d2 d0 89 f6 eb 22 e8 cb d0 89 f6 4c 89 e2 eb 21 e8 c1 d0 89 f6 b8 bd ff ff ff e9 21 fe ff ff e8 b2 d0 89 f6 90 <0f> 0b 90 4c 8b 7c 24 08 48 8b 14 24 4d 8d a7 fa 1d 00 00 4c 89 e0
RSP: 0018:ffffc90003187320 EFLAGS: 00010293
RAX: ffffffff8b3bc8be RBX: dffffc0000000000 RCX: ffff8880295bdb80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff888030ce0187 R09: 1ffff1100619c030
R10: dffffc0000000000 R11: ffffed100619c031 R12: ffff8880688addfe
R13: ffff8880688acdc0 R14: 1ffff1100d115afe R15: 0000000000000000
FS:  0000555589322500(0000) GS:ffff888125561000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000021c0 CR3: 00000000682a6000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 rdev_tdls_oper net/wireless/rdev-ops.h:945 [inline]
 nl80211_tdls_oper+0x270/0x470 net/wireless/nl80211.c:13748
 genl_family_rcv_msg_doit+0x22a/0x330 net/netlink/genetlink.c:1114
 genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline]
 genl_rcv_msg+0x61c/0x7a0 net/netlink/genetlink.c:1209
 netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550
 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894
 sock_sendmsg_nosec net/socket.c:727 [inline]
 __sock_sendmsg net/socket.c:742 [inline]
 ____sys_sendmsg+0x972/0x9f0 net/socket.c:2592
 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2646
 __sys_sendmsg net/socket.c:2678 [inline]
 __do_sys_sendmsg net/socket.c:2683 [inline]
 __se_sys_sendmsg net/socket.c:2681 [inline]
 __x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2681
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc82559c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffce312b098 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fc825815fa0 RCX: 00007fc82559c799
RDX: 0000000000000050 RSI: 0000200000000240 RDI: 0000000000000005
RBP: 00007fc825632bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc825815fac R14: 00007fc825815fa0 R15: 00007fc825815fa0
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/03/08 21:44 net c113d5e32678 5cb44a80 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce WARNING in ieee80211_tdls_oper
* Struck through repros no longer work on HEAD.