linux-kernel - [syzbot] [wireless?] INFO: task hung in reg_check_chans

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Message-ID: <0000000000004a20330616d0280b@google.com>
Date: Tue, 23 Apr 2024 21:32:25 -0700
From: syzbot <syzbot+b87c222546179f4513a7@...kaller.appspotmail.com>
To: davem@...emloft.net, edumazet@...gle.com, johannes@...solutions.net, 
	kuba@...nel.org, linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org, 
	netdev@...r.kernel.org, pabeni@...hat.com, syzkaller-bugs@...glegroups.com
Subject: [syzbot] [wireless?] INFO: task hung in reg_check_chans_work (6)

Hello,

syzbot found the following issue on:

HEAD commit:    3cdb45594619 Merge tag 's390-6.9-4' of git://git.kernel.or..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=12383e07180000
kernel config:  https://syzkaller.appspot.com/x/.config?x=85dbe39cf8e4f599
dashboard link: https://syzkaller.appspot.com/bug?extid=b87c222546179f4513a7
compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11449c27180000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1749866f180000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/04e2e4bee9fb/disk-3cdb4559.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/65456769dc43/vmlinux-3cdb4559.xz
kernel image: https://storage.googleapis.com/syzbot-assets/09504bbdec9e/bzImage-3cdb4559.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+b87c222546179f4513a7@...kaller.appspotmail.com

INFO: task kworker/1:0:5088 blocked for more than 143 seconds.
      Not tainted 6.9.0-rc4-syzkaller-00173-g3cdb45594619 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:0     state:D stack:23744 pid:5088  tgid:5088  ppid:2      flags:0x00004000
Workqueue: events_power_efficient reg_check_chans_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5409 [inline]
 __schedule+0xf15/0x5d00 kernel/sched/core.c:6746
 __schedule_loop kernel/sched/core.c:6823 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6838
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
 wiphy_lock include/net/cfg80211.h:5953 [inline]
 reg_leave_invalid_chans net/wireless/reg.c:2466 [inline]
 reg_check_chans_work+0x10a/0x10e0 net/wireless/reg.c:2481


---
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