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* [syzbot] [wireless?] INFO: task hung in wiphy_unregister (2)
@ 2024-06-06 15:45 syzbot
  0 siblings, 0 replies; only message in thread
From: syzbot @ 2024-06-06 15:45 UTC (permalink / raw)
  To: davem, edumazet, johannes, kuba, linux-kernel, linux-wireless,
	netdev, pabeni, syzkaller-bugs

Hello,

syzbot found the following issue on:

HEAD commit:    2ab795141095 Merge tag 'cxl-fixes-6.10-rc3' of git://git.k..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1671b2f2980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=f0e2e3f7ede77526
dashboard link: https://syzkaller.appspot.com/bug?extid=abba31ed4fc4178349e9
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/613f40485ad9/disk-2ab79514.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/5f6673b48420/vmlinux-2ab79514.xz
kernel image: https://storage.googleapis.com/syzbot-assets/9659affc7dfc/bzImage-2ab79514.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+abba31ed4fc4178349e9@syzkaller.appspotmail.com

INFO: task kworker/u8:2:35 blocked for more than 143 seconds.
      Not tainted 6.10.0-rc2-syzkaller-00010-g2ab795141095 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:2    state:D stack:23032 pid:35    tgid:35    ppid:2      flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
 wiphy_unregister+0x236/0xaa0 net/wireless/core.c:1096
 ieee80211_unregister_hw+0x1e2/0x2c0 net/mac80211/main.c:1675
 mac80211_hwsim_del_radio+0x2c2/0x4c0 drivers/net/wireless/virtual/mac80211_hwsim.c:5576
 hwsim_exit_net+0x5c1/0x670 drivers/net/wireless/virtual/mac80211_hwsim.c:6453
 ops_exit_list net/core/net_namespace.c:173 [inline]
 cleanup_net+0x804/0xcc0 net/core/net_namespace.c:640
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2e/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd70 kernel/workqueue.c:3393
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
INFO: task dhcpcd:4754 blocked for more than 144 seconds.
      Not tainted 6.10.0-rc2-syzkaller-00010-g2ab795141095 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:dhcpcd          state:D stack:20384 pid:4754  tgid:4754  ppid:4753   flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
 devinet_ioctl+0x2ce/0x1bc0 net/ipv4/devinet.c:1101
 inet_ioctl+0x3d7/0x4f0 net/ipv4/af_inet.c:1003
 sock_do_ioctl+0x15a/0x460 net/socket.c:1222
 sock_ioctl+0x629/0x8e0 net/socket.c:1341
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0xfe/0x170 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2f49d5ed49
RSP: 002b:00007ffe50118268 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f2f49c906c0 RCX: 00007f2f49d5ed49
RDX: 00007ffe50128458 RSI: 0000000000008914 RDI: 0000000000000011
RBP: 00007ffe50138618 R08: 00007ffe50128418 R09: 00007ffe501283c8
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe50128458 R14: 0000000000000028 R15: 0000000000008914
 </TASK>
INFO: task kworker/0:7:5217 blocked for more than 144 seconds.
      Not tainted 6.10.0-rc2-syzkaller-00010-g2ab795141095 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:7     state:D stack:19376 pid:5217 


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