[syzbot] [net?] [wireless?] INFO: task hung in reg_process_self_managed_hints

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: d4ddefee5160 Merge tag 'arm64-fixes' of git://git.kernel.o..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1653bc65a80000
kernel config: https://syzkaller.appspot.com/x/.config?x=aa796b6080b04102
dashboard link: https://syzkaller.appspot.com/bug?extid=1f16507d9ec05f64210a
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=13e59507a80000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16cd6137a80000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/6187f26c7496/disk-d4ddefee.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/8bb63089fdb5/vmlinux-d4ddefee.xz
kernel image: https://storage.googleapis.com/syzbot-assets/1579fb12e27b/bzImage-d4ddefee.xz

The issue was bisected to:

commit d15121be7485655129101f3960ae6add40204463
Author: Paolo Abeni <pab...@redhat.com>
Date: Mon May 8 06:17:44 2023 +0000

Revert "softirq: Let ksoftirqd do its job"

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=115fece3a80000
final oops: https://syzkaller.appspot.com/x/report.txt?x=135fece3a80000
console output: https://syzkaller.appspot.com/x/log.txt?x=155fece3a80000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+1f1650...@syzkaller.appspotmail.com
Fixes: d15121be7485 ("Revert "softirq: Let ksoftirqd do its job"")

INFO: task syz-executor296:5042 blocked for more than 143 seconds.
Not tainted 6.5.0-rc6-syzkaller-00200-gd4ddefee5160 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor296 state:D stack:24336 pid:5042 ppid:5038 flags:0x00004002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6710
schedule+0xe7/0x1b0 kernel/sched/core.c:6786
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x967/0x1340 kernel/locking/mutex.c:747
wiphy_lock include/net/cfg80211.h:5776 [inline]
reg_process_self_managed_hints+0x78/0x170 net/wireless/reg.c:3181


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