syzbot


INFO: task hung in nl80211_pre_doit

Status: auto-obsoleted due to no activity on 2024/09/28 20:22
Reported-by: syzbot+df885998e4eea67cf1b9@syzkaller.appspotmail.com
First crash: 196d, last: 168d
Similar bugs (8)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in rtnetlink_rcv_msg net C inconclusive inconclusive 1970 150d 2113d 26/28 fixed on 2024/07/09 19:14
upstream INFO: task hung in nl80211_pre_doit (3) wireless syz 23 1d13h 22d 0/28 upstream: reported syz repro on 2024/11/14 08:18
upstream INFO: task hung in nl80211_pre_doit wireless 5 1400d 1477d 0/28 auto-closed as invalid on 2021/05/17 09:21
linux-4.19 INFO: task hung in nl80211_pre_doit 1 1058d 1058d 0/1 auto-closed as invalid on 2022/05/13 08:55
upstream INFO: task hung in nl80211_pre_doit (2) wireless 18 1144d 1184d 0/28 auto-closed as invalid on 2022/01/17 00:54
linux-5.15 INFO: task hung in nl80211_pre_doit 9 155d 195d 0/3 auto-obsoleted due to no activity on 2024/10/11 11:32
linux-5.15 INFO: task hung in nl80211_pre_doit (2) 2 24d 42d 0/3 upstream: reported on 2024/10/25 03:46
linux-4.19 INFO: task hung in nl80211_pre_doit (2) 1 706d 706d 0/1 upstream: reported on 2022/12/31 06:52

Sample crash report:
INFO: task syz-executor.0:10338 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.0  state:D stack:26376 pid:10338 ppid:6391   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
 nl80211_pre_doit+0x5b/0x8a0 net/wireless/nl80211.c:16191
 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
 ___sys_sendmsg net/socket.c:2568 [inline]
 __sys_sendmsg+0x2a9/0x390 net/socket.c:2597
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f737fe7cf29
RSP: 002b:00007f7380c260c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f737ffb3f80 RCX: 00007f737fe7cf29
RDX: 0000000000000000 RSI: 00000000200005c0 RDI: 0000000000000005
RBP: 00007f737feec074 R08: 0000000000000000 R09: 0000000000000000

Crashes (7):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/20 20:21 linux-6.1.y eb44d83053d6 dac2aa43 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: task hung in nl80211_pre_doit
2024/06/20 07:05 linux-6.1.y eb44d83053d6 41b7e219 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: task hung in nl80211_pre_doit
2024/06/15 04:59 linux-6.1.y ae9f2a70d69e f429ab00 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: task hung in nl80211_pre_doit
2024/06/12 00:09 linux-6.1.y 88690811da69 4d75f4f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: task hung in nl80211_pre_doit
2024/06/04 20:54 linux-6.1.y 88690811da69 11f2afa5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: task hung in nl80211_pre_doit
2024/06/03 23:00 linux-6.1.y 88690811da69 a1feae05 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: task hung in nl80211_pre_doit
2024/05/24 07:01 linux-6.1.y 4078fa637fcd 8f98448e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan INFO: task hung in nl80211_pre_doit
* Struck through repros no longer work on HEAD.