syzbot


INFO: task hung in nl80211_pre_doit (3)

Status: upstream: reported syz repro on 2024/11/14 08:18
Subsystems: wireless
[Documentation on labels]
Reported-by: syzbot+da14e8c0ada830335981@syzkaller.appspotmail.com
First crash: 131d, last: 8d11h
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [wireless?] INFO: task hung in nl80211_pre_doit (3) 1 (2) 2024/11/14 15:58
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 157d 2120d 26/28 fixed on 2024/07/09 19:14
upstream INFO: task hung in nl80211_pre_doit wireless 5 1406d 1484d 0/28 auto-closed as invalid on 2021/05/17 09:21
linux-4.19 INFO: task hung in nl80211_pre_doit 1 1065d 1065d 0/1 auto-closed as invalid on 2022/05/13 08:55
upstream INFO: task hung in nl80211_pre_doit (2) wireless 18 1151d 1191d 0/28 auto-closed as invalid on 2022/01/17 00:54
linux-5.15 INFO: task hung in nl80211_pre_doit 9 162d 202d 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 31d 49d 0/3 upstream: reported on 2024/10/25 03:46
linux-4.19 INFO: task hung in nl80211_pre_doit (2) 1 713d 713d 0/1 upstream: reported on 2022/12/31 06:52
linux-6.1 INFO: task hung in nl80211_pre_doit 7 175d 203d 0/3 auto-obsoleted due to no activity on 2024/09/28 20:22
Last patch testing requests (1)
Created Duration User Patch Repo Result
2024/11/24 08:17 16m retest repro upstream report log

Sample crash report:
INFO: task syz-executor:5427 blocked for more than 144 seconds.
      Not tainted 6.12.0-rc6-syzkaller-00279-gde2f378f2b77 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:20096 pid:5427  tgid:5427  ppid:1      flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5328 [inline]
 __schedule+0x184f/0x4c30 kernel/sched/core.c:6690
 __schedule_loop kernel/sched/core.c:6767 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6782
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a7/0xd70 kernel/locking/mutex.c:752
 nl80211_pre_doit+0x5f/0x8b0 net/wireless/nl80211.c:16580
 genl_family_rcv_msg_doit net/netlink/genetlink.c:1110 [inline]
 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline]
 genl_rcv_msg+0xaaa/0xec0 net/netlink/genetlink.c:1210
 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2551
 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219
 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
 netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357
 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901
 sock_sendmsg_nosec net/socket.c:729 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:744
 __sys_sendto+0x39b/0x4f0 net/socket.c:2214
 __do_sys_sendto net/socket.c:2226 [inline]
 __se_sys_sendto net/socket.c:2222 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2222
 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: 0033:0x7f024ad805ac
RSP: 002b:00007ffd15eb6070 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f024ba64620 RCX: 00007f024ad805ac
RDX: 0000000000000040 RSI: 00007f024ba64670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffd15eb60c4 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f024ba64670 R15: 0000000000000000
 </TASK>
INFO: task syz-executor:5435 blocked for more than 148 seconds.
      Not tainted 6.12.0-rc6-syzkaller-00279-gde2f378f2b77 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:20656 pid:5435  tgid:5435  ppid:1      flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5328 [inline]
 __schedule+0x184f/0x4c30 kernel/sched/core.c:6690
 __schedule_loop kernel/sched/core.c:6767 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6782
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a7/0xd70 kernel/locking/mutex.c:752
 rtnl_lock net/core/rtnetlink.c:79 [inline]
 rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2551
 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
 netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357
 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901
 sock_sendmsg_nosec net/socket.c:729 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:744
 __sys_sendto+0x39b/0x4f0 net/socket.c:2214
 __do_sys_sendto net/socket.c:2226 [inline]
 __se_sys_sendto net/socket.c:2222 [inline]
 __x64_sys_sendto+0xde/0x100 net/socket.c:2222
 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: 0033:0x7facdd1805ac
RSP: 002b:00007ffc7ba5d850 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007facdde64620 RCX: 00007facdd1805ac
RDX: 0000000000000040 RSI: 00007facdde64670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffc7ba5d8a4 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007facdde64670 R15: 0000000000000000
 </TASK>

Showing all locks held in the system:
2 locks held by kworker/0:0/8:
3 locks held by kworker/u4:0/11:
2 locks held by kworker/u4:1/12:
1 lock held by khungtaskd/25:
 #0: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #0: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6720

Crashes (23):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/11/10 08:04 upstream de2f378f2b77 6b856513 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root INFO: task hung in nl80211_pre_doit
2024/12/04 21:49 upstream feffde684ac2 b50eb251 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in nl80211_pre_doit
2024/10/12 07:10 upstream 9e4c6c1ad9a1 084d8178 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in nl80211_pre_doit
2024/10/10 13:50 upstream d3d1556696c1 8fbfc0c8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in nl80211_pre_doit
2024/10/05 13:38 upstream 27cc6fdf7201 d7906eff .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in nl80211_pre_doit
2024/09/30 15:01 upstream 9852d85ec9d4 bbd4e0a4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in nl80211_pre_doit
2024/09/28 13:52 upstream ad46e8f95e93 440b26ec .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in nl80211_pre_doit
2024/09/23 13:18 upstream de5cb0dcb74c 89298aad .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in nl80211_pre_doit
2024/08/05 16:38 upstream de9c2c66ad8e e35c337f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in nl80211_pre_doit
2024/08/03 15:47 upstream 17712b7ea075 1786a2a8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in nl80211_pre_doit
2024/10/12 14:38 upstream 9e4c6c1ad9a1 084d8178 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: task hung in nl80211_pre_doit
2024/10/10 11:54 upstream b983b271662b 0278d004 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: task hung in nl80211_pre_doit
2024/10/05 22:42 upstream fc20a3e57247 d7906eff .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: task hung in nl80211_pre_doit
2024/09/26 13:24 upstream aa486552a110 0d19f247 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: task hung in nl80211_pre_doit
2024/08/03 22:07 upstream 17712b7ea075 1786a2a8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: task hung in nl80211_pre_doit
2024/10/09 09:15 net 08c8acc9d8f3 402f1df0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in nl80211_pre_doit
2024/10/03 21:28 net a0ffa68c70b3 d7906eff .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in nl80211_pre_doit
2024/10/20 20:53 net-next 6d858708d465 cd6fc0a3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in nl80211_pre_doit
2024/10/10 11:07 net-next 09cf85ef183a 0278d004 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in nl80211_pre_doit
2024/10/05 20:02 net-next d521db38f339 d7906eff .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in nl80211_pre_doit
2024/10/02 16:24 net-next 44badc908f2c a4c7fd36 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in nl80211_pre_doit
2024/09/30 23:52 net-next c824deb1a897 bbd4e0a4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in nl80211_pre_doit
2024/08/09 09:29 net-next eb3ab13d997a 61405512 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in nl80211_pre_doit
* Struck through repros no longer work on HEAD.