From: syzbot <syzbot+435fdb053cf98bfa5778@syzkaller.appspotmail.com>
To: johannes@sipsolutions.net, linux-kernel@vger.kernel.org,
linux-wireless@vger.kernel.org, netdev@vger.kernel.org,
syzkaller-bugs@googlegroups.com
Subject: [syzbot] [wireless?] WARNING in mac80211_hwsim_tx (2)
Date: Sun, 10 May 2026 14:02:32 -0700 [thread overview]
Message-ID: <6a00f268.170a0220.1c0296.021c.GAE@google.com> (raw)
Hello,
syzbot found the following issue on:
HEAD commit: adc1e5c6203c Merge tag 'efi-fixes-for-v7.1-1' of git://git..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1369cd06580000
kernel config: https://syzkaller.appspot.com/x/.config?x=59da38148f3a3d24
dashboard link: https://syzkaller.appspot.com/bug?extid=435fdb053cf98bfa5778
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/e1ec8b63537e/disk-adc1e5c6.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/2030fc4d0035/vmlinux-adc1e5c6.xz
kernel image: https://storage.googleapis.com/syzbot-assets/a50679f39f63/bzImage-adc1e5c6.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+435fdb053cf98bfa5778@syzkaller.appspotmail.com
------------[ cut here ]------------
sp->magic != HWSIM_STA_MAGIC
WARNING: drivers/net/wireless/virtual/mac80211_hwsim.c:265 at hwsim_check_sta_magic drivers/net/wireless/virtual/mac80211_hwsim.c:265 [inline], CPU#1: syz.3.8603/32057
WARNING: drivers/net/wireless/virtual/mac80211_hwsim.c:265 at hwsim_check_sta_magic drivers/net/wireless/virtual/mac80211_hwsim.c:262 [inline], CPU#1: syz.3.8603/32057
WARNING: drivers/net/wireless/virtual/mac80211_hwsim.c:265 at mac80211_hwsim_tx+0x2085/0x2b10 drivers/net/wireless/virtual/mac80211_hwsim.c:2213, CPU#1: syz.3.8603/32057
Modules linked in:
CPU: 1 UID: 0 PID: 32057 Comm: syz.3.8603 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:hwsim_check_sta_magic drivers/net/wireless/virtual/mac80211_hwsim.c:265 [inline]
RIP: 0010:hwsim_check_sta_magic drivers/net/wireless/virtual/mac80211_hwsim.c:262 [inline]
RIP: 0010:mac80211_hwsim_tx+0x2085/0x2b10 drivers/net/wireless/virtual/mac80211_hwsim.c:2213
Code: 44 24 20 e8 fd a6 dc fa 48 8d 3d a6 50 b8 09 48 8b 54 24 20 8b 74 24 30 89 d9 67 48 0f b9 3a e9 f7 ec ff ff e8 dc a6 dc fa 90 <0f> 0b 90 e9 a0 e3 ff ff e8 ce a6 dc fa 48 8d bb f1 07 00 00 48 b8
RSP: 0018:ffffc900040eeea0 EFLAGS: 00010283
RAX: 000000000000075e RBX: ffff888083a0eb78 RCX: ffffc90011de4000
RDX: 0000000000080000 RSI: ffffffff872bec44 RDI: ffff8880663e0000
RBP: 0000000000000000 R08: 0000000000000005 R09: 000000006d537749
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888067c460c0
R13: ffff888074694780 R14: ffff8880401231c0 R15: ffff888074694780
FS: 00007f439aedf6c0(0000) GS:ffff888124475000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000003540 CR3: 000000003994c000 CR4: 00000000003526f0
Call Trace:
<TASK>
drv_tx net/mac80211/driver-ops.h:38 [inline]
ieee80211_tx_frags+0x5c9/0xa70 net/mac80211/tx.c:1746
__ieee80211_tx+0x145/0x5b0 net/mac80211/tx.c:1801
ieee80211_tx+0x336/0x460 net/mac80211/tx.c:1984
ieee80211_xmit+0x30f/0x3e0 net/mac80211/tx.c:2076
__ieee80211_tx_skb_tid_band+0x2c2/0x720 net/mac80211/tx.c:6369
ieee80211_tx_skb_tid+0x1c1/0x550 net/mac80211/tx.c:6399
ieee80211_mgmt_tx+0x1326/0x2590 net/mac80211/offchannel.c:1029
rdev_mgmt_tx net/wireless/rdev-ops.h:767 [inline]
cfg80211_mlme_mgmt_tx+0x803/0x1600 net/wireless/mlme.c:961
nl80211_tx_mgmt+0x9f9/0xf30 net/wireless/nl80211.c:14358
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:2550
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1218
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x585/0x850 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x8b0/0xda0 net/netlink/af_netlink.c:1894
sock_sendmsg_nosec net/socket.c:787 [inline]
__sock_sendmsg net/socket.c:802 [inline]
____sys_sendmsg+0x9e1/0xb70 net/socket.c:2698
___sys_sendmsg+0x190/0x1e0 net/socket.c:2752
__sys_sendmsg+0x170/0x220 net/socket.c:2784
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4399f9cdd9
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:00007f439aedf028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f439a216090 RCX: 00007f4399f9cdd9
RDX: 0000000028004800 RSI: 0000200000003740 RDI: 0000000000000003
RBP: 00007f439a032d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f439a216128 R14: 00007f439a216090 R15: 00007ffff74f7008
</TASK>
---
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next reply other threads:[~2026-05-10 21:02 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-10 21:02 syzbot [this message]
2026-06-30 19:33 ` [syzbot] [wireless?] WARNING in mac80211_hwsim_tx (2) syzbot
2026-08-02 10:35 ` Forwarded: [PATCH] wifi: mac80211_hwsim: drop frames with invalid channel width syzbot
[not found] <OS7PR01MB144450AD9B0CE7EC841B2CE43ECD62@OS7PR01MB14445.jpnprd01.prod.outlook.com>
2026-08-02 11:02 ` [syzbot] [wireless?] WARNING in mac80211_hwsim_tx (2) syzbot
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