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From: syzbot <syzbot+c92af8613ad38696ff09@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?] INFO: task hung in ieee80211_register_hw (8)
Date: Sat, 12 Sep 2026 02:57:28 -0700	[thread overview]
Message-ID: <6aa52208.f81106d8.2ab401.002a.GAE@google.com> (raw)

Hello,

syzbot found the following issue on:

HEAD commit:    6f157f39d181 Merge branch 'remove-comma-after-sentinel-ent..
git tree:       net-next
console output: https://syzkaller.appspot.com/x/log.txt?x=104ae601580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=ba53f227359c9d59
dashboard link: https://syzkaller.appspot.com/bug?extid=c92af8613ad38696ff09
compiler:       Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=101bf105580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/f30b26c34a47/disk-6f157f39.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/46a0f6146076/vmlinux-6f157f39.xz
kernel image: https://storage.googleapis.com/syzbot-assets/5b4fc3fe5ab8/bzImage-6f157f39.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+c92af8613ad38696ff09@syzkaller.appspotmail.com

INFO: task syz-executor:5765 blocked for more than 158 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:22416 pid:5765  tgid:5765  ppid:5759   task_flags:0x400140 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5520 [inline]
 __schedule+0x17db/0x58f0 kernel/sched/core.c:7270
 __schedule_loop kernel/sched/core.c:7347 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7362
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7419
 __mutex_lock_common kernel/locking/mutex.c:726 [inline]
 __mutex_lock+0x7c1/0x1550 kernel/locking/mutex.c:821
 ieee80211_register_hw+0x3881/0x4a50 net/mac80211/main.c:1560
 mac80211_hwsim_new_radio+0x3258/0x56b0 drivers/net/wireless/virtual/mac80211_hwsim_main.c:6138
 hwsim_new_radio_nl+0xd8b/0xf90 drivers/net/wireless/virtual/mac80211_hwsim_main.c:6957
 genl_family_rcv_msg_doit+0x233/0x340 net/netlink/genetlink.c:1114
 genl_family_rcv_msg net/netlink/genetlink.c:1194 [inline]
 genl_rcv_msg+0x614/0x7a0 net/netlink/genetlink.c:1209


---
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:
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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:
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If you attach or paste a git patch, syzbot will apply it before testing.

If you want to overwrite report's subsystems, reply with:
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If the report is a duplicate of another one, reply with:
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If you want to undo deduplication, reply with:
#syz undup

                 reply	other threads:[~2026-09-12  9:57 UTC|newest]

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