syzbot


INFO: task hung in nl80211_pre_doit

Status: auto-closed as invalid on 2022/05/13 08:55
Reported-by: syzbot+362d812aebcc96b13a84@syzkaller.appspotmail.com
First crash: 824d, last: 824d
Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in rtnetlink_rcv_msg net C inconclusive inconclusive 913 35d 1880d 0/26 upstream: reported C repro on 2019/02/22 17:00
upstream INFO: task hung in nl80211_pre_doit wireless 5 1166d 1243d 0/26 auto-closed as invalid on 2021/05/17 09:21
upstream INFO: task hung in nl80211_pre_doit (2) wireless 18 910d 951d 0/26 auto-closed as invalid on 2022/01/17 00:54
linux-4.19 INFO: task hung in nl80211_pre_doit (2) 1 472d 472d 0/1 upstream: reported on 2022/12/31 06:52

Sample crash report:
Bluetooth: hci3: command 0x0406 tx timeout
ieee802154 phy0 wpan0: encryption failed: -22
ieee802154 phy1 wpan1: encryption failed: -22
ieee802154 phy0 wpan0: encryption failed: -22
ieee802154 phy1 wpan1: encryption failed: -22
INFO: task syz-executor.5:28119 blocked for more than 140 seconds.
      Not tainted 4.19.211-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.5  D27504 28119  21848 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619
 __mutex_lock_common kernel/locking/mutex.c:1016 [inline]
 __mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078
 nl80211_pre_doit+0x34f/0x620 net/wireless/nl80211.c:13089
 genl_family_rcv_msg+0x604/0xc40 net/netlink/genetlink.c:597
 genl_rcv_msg+0xbf/0x160 net/netlink/genetlink.c:627
 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2463
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:638
 netlink_unicast_kernel net/netlink/af_netlink.c:1325 [inline]
 netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1351

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2022/01/13 08:55 linux-4.19.y 3f8a27f9e27b 44d1319a .config console log report info ci2-linux-4-19 INFO: task hung in nl80211_pre_doit
* Struck through repros no longer work on HEAD.