syzbot


INFO: task hung in nl80211_pre_doit

Status: upstream: reported on 2024/05/24 13:56
Reported-by: syzbot+f8b7017ec415285c32e0@syzkaller.appspotmail.com
First crash: 26d, last: 1d07h
Similar bugs (6)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in rtnetlink_rcv_msg net C inconclusive inconclusive 1888 17m 1944d 0/27 upstream: reported C repro on 2019/02/22 17:00
upstream INFO: task hung in nl80211_pre_doit wireless 5 1230d 1307d 0/27 auto-closed as invalid on 2021/05/17 09:21
linux-4.19 INFO: task hung in nl80211_pre_doit 1 888d 888d 0/1 auto-closed as invalid on 2022/05/13 08:55
upstream INFO: task hung in nl80211_pre_doit (2) wireless 18 974d 1014d 0/27 auto-closed as invalid on 2022/01/17 00:54
linux-4.19 INFO: task hung in nl80211_pre_doit (2) 1 536d 536d 0/1 upstream: reported on 2022/12/31 06:52
linux-6.1 INFO: task hung in nl80211_pre_doit 5 4d14h 26d 0/3 upstream: reported on 2024/05/24 07:02

Sample crash report:
INFO: task syz-executor.2:6309 blocked for more than 143 seconds.
      Not tainted 5.15.161-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2  state:D stack:26432 pid: 6309 ppid:  5769 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5030 [inline]
 __schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
 schedule+0x11b/0x1f0 kernel/sched/core.c:6459
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6518
 __mutex_lock_common+0xe34/0x25a0 kernel/locking/mutex.c:669
 __mutex_lock kernel/locking/mutex.c:729 [inline]
 mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
 nl80211_pre_doit+0x28/0x540 net/wireless/nl80211.c:14965
 genl_family_rcv_msg_doit net/netlink/genetlink.c:726 [inline]
 genl_family_rcv_msg net/netlink/genetlink.c:775 [inline]
 genl_rcv_msg+0xf6a/0x14a0 net/netlink/genetlink.c:792

Crashes (8):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/18 11:34 linux-5.15.y 4878aadf2d15 639d6cdf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in nl80211_pre_doit
2024/06/17 16:56 linux-5.15.y 4878aadf2d15 1f11cfd7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in nl80211_pre_doit
2024/06/09 18:54 linux-5.15.y c61bd26ae81a 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in nl80211_pre_doit
2024/06/04 00:00 linux-5.15.y c61bd26ae81a a1feae05 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in nl80211_pre_doit
2024/06/03 22:09 linux-5.15.y c61bd26ae81a a1feae05 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in nl80211_pre_doit
2024/06/03 20:49 linux-5.15.y c61bd26ae81a 0aba2352 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in nl80211_pre_doit
2024/05/28 20:17 linux-5.15.y c61bd26ae81a 34889ee3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in nl80211_pre_doit
2024/05/24 13:55 linux-5.15.y 83655231580b 8f98448e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan INFO: task hung in nl80211_pre_doit
* Struck through repros no longer work on HEAD.