syzbot


INFO: task hung in nl802154_pre_doit

Status: auto-obsoleted due to no activity on 2024/09/25 07:15
Reported-by: syzbot+5903730c74cf3798282c@syzkaller.appspotmail.com
First crash: 187d, last: 179d
Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in nl802154_pre_doit (2) wpan 7 180d 206d 0/28 auto-obsoleted due to no activity on 2024/09/13 13:37
linux-5.15 INFO: task hung in nl802154_pre_doit 1 182d 182d 0/3 auto-obsoleted due to no activity on 2024/09/22 00:14
upstream INFO: task hung in nl802154_pre_doit wpan 1 896d 896d 0/28 auto-closed as invalid on 2022/09/28 14:08

Sample crash report:
INFO: task syz-executor.3:4679 blocked for more than 143 seconds.
      Not tainted 6.1.94-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3  state:D stack:26376 pid:4679  ppid:3574   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5245 [inline]
 __schedule+0x142d/0x4550 kernel/sched/core.c:6558
 schedule+0xbf/0x180 kernel/sched/core.c:6634
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6693
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0x6b9/0xd80 kernel/locking/mutex.c:747
 nl802154_pre_doit+0xb1/0xa90 net/ieee802154/nl802154.c:2169
 genl_family_rcv_msg_doit net/netlink/genetlink.c:751 [inline]
 genl_family_rcv_msg net/netlink/genetlink.c:833 [inline]
 genl_rcv_msg+0xbc1/0xf70 net/netlink/genetlink.c:850
 netlink_rcv_skb+0x1cd/0x410 net/netlink/af_netlink.c:2508
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:861
 netlink_unicast_kernel net/netlink/af_netlink.c:1326 [inline]
 netlink_unicast+0x7d8/0x970 net/netlink/af_netlink.c:1352
 netlink_sendmsg+0xa26/0xd60 net/netlink/af_netlink.c:1874
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 ____sys_sendmsg+0x5a5/0x8f0 net/socket.c:2514

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/17 07:14 linux-6.1.y eb44d83053d6 f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: task hung in nl802154_pre_doit
2024/06/08 14:39 linux-6.1.y 88690811da69 82c05ab8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: task hung in nl802154_pre_doit
* Struck through repros no longer work on HEAD.