syzbot


INFO: task hung in rtnetlink_rcv_msg

Status: upstream: reported C repro on 2019/02/22 17:00
Subsystems: net
[Documentation on labels]
Reported-by: syzbot+8218a8a0ff60c19b8eae@syzkaller.appspotmail.com
First crash: 1857d, last: 6d17h
Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: INFO: task hung in addrconf_dad_work (log)
Repro: C syz .config
  
Fix bisection the fix commit could be any of (bisect log):
  2618500dd370 arm: dts: mediatek: Update mt7629 dts to reflect the latest dt-binding
  c9b96eb6da2a Merge branch 'Update-MT7629-to-support-PHYLINK-API'
  4e3eff5beafa net: ethernet: mediatek: Fix MT7629 missing GMII mode support
  cab209e571a9 tcp: fix a possible lockdep splat in tcp_done()
  8d045995ed5b Merge branch 'mpls-push-pop-fix'
  b790b5549bdf net: dsa: sja1105: Use the correct style for SPDX License Identifier
  39f13ea2f61b net: avoid potential infinite loop in tc_ctl_action()
  fa4e0f8855fc net/sched: fix corrupted L2 header with MPLS 'push' and 'pop' actions
  28aa7c86c2b4 sched: etf: Fix ordering of packets with same txtime
  dedc5a08da07 net: avoid errors when trying to pop MLPS header on non-MPLS packets
  63dfb7938b13 sctp: change sctp_prot .no_autobind with true
  a03681dd5d1b net: cavium: Use the correct style for SPDX License Identifier
  61c1d33daf7b net: i82596: fix dma_alloc_attr for sni_82596
  b31141d390f1 net: dsa: microchip: Use the correct style for SPDX License Identifier
  539825a53604 davinci_cpdma: make cpdma_chan_split_pool static
  ddc790e92b3a net: ethernet: broadcom: have drivers select DIMLIB as needed
  bad28d889cae net: stmmac: make tc_flow_parsers static
  f913eac8e555 net: Update address for vrf and l3mdev in MAINTAINERS
  92696286f3bb net: bcmgenet: Set phydev->dev_flags only for internal PHYs
  efb86fede98c net: bcmgenet: Fix RGMII_MODE_EN value for GENET v1/2/3
  77b6d09f4ae6 net: usb: sr9800: fix uninitialized local variable
  b0818f80c8c1 blackhole_netdev: fix syzkaller reported issue
  bd74708cd979 Revert "blackhole_netdev: fix syzkaller reported issue"
  
Discussions (12)
Title Replies (including bot) Last reply
[syzbot] Monthly net report (Feb 2024) 0 (1) 2024/02/27 09:32
[syzbot] Monthly net report (Jan 2024) 0 (1) 2024/01/26 21:54
[syzbot] Monthly net report (Dec 2023) 0 (1) 2023/12/27 09:18
[syzbot] Monthly net report (Nov 2023) 5 (6) 2023/11/28 15:05
[syzbot] Monthly net report (Jul 2023) 0 (1) 2023/08/01 12:53
[syzbot] Monthly net report (Jun 2023) 0 (1) 2023/06/29 12:38
[syzbot] Monthly net report (May 2023) 0 (1) 2023/05/30 10:56
[syzbot] Monthly net report (Apr 2023) 0 (1) 2023/04/27 10:45
[syzbot] Monthly net report 0 (1) 2023/03/27 11:04
Reminder: 99 open syzbot bugs in net subsystem 14 (14) 2019/07/31 15:13
Reminder: 94 open syzbot bugs in net subsystem 1 (1) 2019/06/25 05:48
INFO: task hung in rtnetlink_rcv_msg 7 (8) 2019/02/25 19:26
Similar bugs (65)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 INFO: task hung in rtnetlink_rcv_msg 1 248d 248d 0/3 auto-obsoleted due to no activity on 2023/10/22 21:13
linux-4.19 INFO: task hung in rtnetlink_rcv_msg (2) 14 790d 969d 0/1 auto-closed as invalid on 2022/05/18 11:30
linux-4.19 INFO: task hung in rtnetlink_rcv_msg (3) 8 403d 637d 0/1 upstream: reported on 2022/06/20 23:55
linux-4.19 INFO: task hung in rtnetlink_rcv_msg 11 1222d 1544d 0/1 auto-closed as invalid on 2021/03/12 19:03
linux-4.14 INFO: task hung in rtnetlink_rcv_msg 1 383d 383d 0/1 upstream: reported on 2023/03/01 21:15
linux-5.15 INFO: task hung in rtnetlink_rcv_msg (2) 3 8d17h 50d 0/3 upstream: reported on 2024/01/29 02:32
linux-6.1 INFO: task hung in rtnetlink_rcv_msg (2) 4 9d01h 52d 0/3 upstream: reported on 2024/01/27 00:38
linux-6.1 INFO: task hung in rtnetlink_rcv_msg 1 173d 173d 0/3 auto-obsoleted due to no activity on 2024/01/09 18:18
upstream INFO: task hung in cangw_pernet_exit (3) can syz unreliable 290 812d 918d 0/26 closed as invalid on 2022/02/08 10:22
upstream INFO: task can't die in rtnetlink_rcv_msg net 5 1258d 1267d 15/26 fixed on 2020/11/16 12:12
upstream INFO: task can't die in synchronize_rcu_expedited net 1 1310d 1306d 0/26 auto-closed as invalid on 2020/10/15 13:33
upstream INFO: task can't die in synchronize_rcu_expedited (2) fs 2 1153d 1155d 0/26 auto-closed as invalid on 2021/03/21 09:06
upstream INFO: task hung in nl80211_pre_doit wireless 5 1137d 1215d 0/26 auto-closed as invalid on 2021/05/17 09:21
linux-4.19 INFO: task hung in nl80211_pre_doit 1 795d 795d 0/1 auto-closed as invalid on 2022/05/13 08:55
upstream INFO: task hung in nl80211_pre_doit (2) wireless 18 882d 922d 0/26 auto-closed as invalid on 2022/01/17 00:54
linux-4.19 INFO: task hung in nl80211_pre_doit (2) 1 443d 443d 0/1 upstream: reported on 2022/12/31 06:52
upstream INFO: task hung in ip_rt_ioctl net 3 1137d 1260d 0/26 auto-closed as invalid on 2021/05/17 08:41
upstream INFO: task hung in __netlink_dump_start (2) net 5 800d 882d 0/26 closed as invalid on 2022/02/07 19:19
linux-5.15 INFO: task hung in __netlink_dump_start 1 30d 30d 0/3 upstream: reported on 2024/02/18 03:22
linux-4.19 INFO: task hung in __netlink_dump_start (2) 1 752d 752d 0/1 auto-closed as invalid on 2022/06/25 14:03
linux-6.1 INFO: task hung in __netlink_dump_start 3 13d 50d 0/3 upstream: reported on 2024/01/28 21:16
upstream INFO: task hung in sock_ioctl (2) net 1 908d 908d 0/26 auto-closed as invalid on 2021/12/21 20:14
linux-4.14 INFO: task hung in sock_ioctl (2) 1 1137d 1137d 0/1 auto-closed as invalid on 2021/06/05 18:05
upstream INFO: task hung in ip_setsockopt (2) net 1 881d 881d 0/26 auto-closed as invalid on 2022/01/17 23:55
upstream INFO: task can't die in pipe_write (2) fs 1 880d 876d 0/26 auto-closed as invalid on 2021/12/19 10:46
linux-4.14 INFO: task hung in pipe_write C 1 394d 511d 0/1 upstream: reported C repro on 2022/10/24 05:45
linux-4.19 INFO: task hung in pipe_write C error 13 481d 1381d 0/1 upstream: reported C repro on 2020/06/07 01:40
upstream INFO: task hung in pipe_write (4) fs syz error 7 780d 1327d 0/26 auto-obsoleted due to no activity on 2022/10/22 17:00
upstream INFO: task can't die in pipe_write fs 1 954d 928d 0/26 auto-closed as invalid on 2021/10/06 11:40
linux-4.19 INFO: task hung in ipv6_route_ioctl 1 841d 841d 0/1 auto-closed as invalid on 2022/03/28 22:32
upstream INFO: task hung in ipv6_route_ioctl (2) net 1 1137d 1137d 0/26 auto-closed as invalid on 2021/05/07 00:43
linux-4.19 INFO: task hung in ipv6_route_ioctl (2) 1 416d 416d 0/1 upstream: reported on 2023/01/28 02:21
upstream INFO: task hung in dev_ioctl (4) net 1 1036d 1036d 0/26 auto-closed as invalid on 2021/08/15 15:56
linux-4.14 INFO: task hung in dev_ioctl 1 699d 699d 0/1 auto-closed as invalid on 2022/08/17 13:11
upstream INFO: task hung in dev_ioctl (5) net 20 880d 924d 0/26 auto-closed as invalid on 2022/01/19 01:57
linux-5.15 INFO: task hung in tun_chr_close 1 19h32m 19h32m 0/3 upstream: reported on 2024/03/18 08:54
upstream INFO: task hung in tun_chr_close (4) net syz unreliable error 14 856d 917d 0/26 auto-closed as invalid on 2022/09/18 21:51
linux-4.19 INFO: task hung in tun_chr_close (3) 1 591d 591d 0/1 auto-obsoleted due to no activity on 2022/12/03 04:48
linux-4.19 INFO: task hung in tun_chr_close (4) 3 398d 425d 0/1 upstream: reported on 2023/01/18 07:05
linux-4.19 INFO: task hung in tun_chr_close (2) 6 804d 898d 0/1 auto-closed as invalid on 2022/05/04 09:03
upstream INFO: task hung in tun_chr_close (3) net 1 1028d 1028d 0/26 auto-closed as invalid on 2021/08/23 13:06
upstream INFO: task hung in tun_chr_close (2) net 7 1137d 1358d 0/26 auto-closed as invalid on 2021/05/17 11:47
upstream INFO: task hung in ipv6_route_ioctl net 2 1257d 1259d 0/26 auto-closed as invalid on 2021/01/06 04:59
linux-4.19 INFO: task hung in __netlink_dump_start 1 1381d 1381d 0/1 auto-closed as invalid on 2020/10/04 12:25
upstream INFO: task hung in __netlink_dump_start net 2 1250d 1264d 0/26 auto-closed as invalid on 2021/01/13 23:36
upstream INFO: task hung in ip_setsockopt net 1 1263d 1263d 0/26 auto-closed as invalid on 2021/01/01 01:08
linux-4.19 INFO: task hung in tun_chr_close 1 1315d 1315d 0/1 auto-closed as invalid on 2020/12/09 18:55
upstream INFO: task hung in tun_chr_close net 5 1641d 2222d 0/26 closed as dup on 2018/02/16 08:24
android-49 INFO: task hung in tun_chr_close 1 2137d 2137d 0/3 auto-closed as invalid on 2019/02/22 14:33
android-44 INFO: task hung in tun_chr_close 1 2146d 2146d 0/2 auto-closed as invalid on 2019/02/22 15:23
linux-4.14 INFO: task hung in sock_ioctl 1 1436d 1436d 0/1 auto-closed as invalid on 2020/08/10 12:43
upstream INFO: task hung in sock_ioctl bridge 9 1890d 2247d 0/26 auto-closed as invalid on 2019/07/13 13:17
upstream INFO: task hung in pipe_write (3) fs 1 1513d 1513d 0/26 auto-closed as invalid on 2020/04/25 05:37
android-44 INFO: task hung in pipe_write 1 1928d 1800d 0/2 auto-closed as invalid on 2019/06/05 06:19
upstream INFO: task hung in pipe_write (2) ext4 C done 6 1642d 1642d 0/26 closed as invalid on 2019/09/28 02:25
upstream INFO: task hung in pipe_write fs 8 1873d 1987d 0/26 auto-closed as invalid on 2019/07/30 21:09
android-44 INFO: task hung in pipe_write (2) 1 1569d 1569d 0/2 auto-closed as invalid on 2020/03/31 01:26
android-49 INFO: task hung in pipe_write C 3 1594d 1800d 0/3 public: reported C repro on 2019/04/14 08:51
android-414 INFO: task hung in pipe_write 1 1617d 1617d 0/1 auto-closed as invalid on 2020/02/11 22:17
android-49 INFO: task hung in dev_ioctl 1 2081d 2081d 0/3 auto-closed as invalid on 2019/02/22 12:59
upstream INFO: task hung in dev_ioctl (2) net 1 1794d 1794d 0/26 closed as invalid on 2019/05/08 13:05
android-414 INFO: task hung in dev_ioctl 2 1998d 2018d 0/1 auto-closed as invalid on 2019/03/27 22:33
android-414 INFO: task hung in dev_ioctl (2) 1 1571d 1571d 0/1 auto-closed as invalid on 2020/03/28 22:15
upstream INFO: task hung in dev_ioctl net 2 1996d 2023d 0/26 auto-closed as invalid on 2019/03/30 00:48
upstream INFO: task hung in dev_ioctl (3) net 7 1173d 1301d 0/26 auto-closed as invalid on 2021/04/01 04:28
Last patch testing requests (11)
Created Duration User Patch Repo Result
2023/11/19 11:07 35m retest repro linux-next report log
2023/11/19 11:07 40m retest repro linux-next OK log
2023/11/19 11:07 25m retest repro linux-next OK log
2023/11/19 09:41 1h22m retest repro net OK log
2023/11/19 04:17 23m retest repro upstream OK log
2023/11/19 04:17 22m retest repro upstream OK log
2023/11/18 23:55 27m retest repro linux-next OK log
2023/11/18 23:55 23m retest repro net-next OK log
2023/11/18 23:55 22m retest repro net-next OK log
2023/11/18 23:55 22m retest repro upstream OK log
2023/03/28 07:19 21m hdanton@sina.com https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master OK log
Fix bisection attempts (2)
Created Duration User Patch Repo Result
2019/12/30 13:21 10h55m bisect fix upstream job log (23)
2019/08/13 00:50 25m bisect fix upstream job log (0) log

Sample crash report:
INFO: task syz-executor691:8521 blocked for more than 143 seconds.
      Not tainted 5.11.0-rc2-next-20210106-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor691 state:D
 stack:23904 pid: 8521 ppid:  8515 flags:0x00000000
Call Trace:
 context_switch kernel/sched/core.c:4312 [inline]
 __schedule+0x90c/0x21a0 kernel/sched/core.c:5063
 schedule+0xcf/0x270 kernel/sched/core.c:5142
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5201
 __mutex_lock_common kernel/locking/mutex.c:1033 [inline]
 __mutex_lock+0x81a/0x1110 kernel/locking/mutex.c:1103
 rtnl_lock net/core/rtnetlink.c:72 [inline]
 rtnetlink_rcv_msg+0x3f9/0xad0 net/core/rtnetlink.c:5561
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2494
 netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330
 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1919
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:672
 __sys_sendto+0x21c/0x320 net/socket.c:1975
 __do_sys_sendto net/socket.c:1987 [inline]
 __se_sys_sendto net/socket.c:1983 [inline]
 __x64_sys_sendto+0xdd/0x1b0 net/socket.c:1983
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x409303
RSP: 002b:00007ffcfc0d0d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00000000006e2d80 RCX: 0000000000409303
RDX: 0000000000000040 RSI: 00000000006e2dd0 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffcfc0d0da0 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00000000006e2dd0 R15: 0000000000000003

Showing all locks held in the system:
3 locks held by kworker/0:0/5:
 #0: ffff888020ea4538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff888020ea4538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
 #0: ffff888020ea4538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
 #0: ffff888020ea4538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline]
 #0: ffff888020ea4538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline]
 #0: ffff888020ea4538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x871/0x15f0 kernel/workqueue.c:2246
 #1: 
ffffc90000ca7da8 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15f0 kernel/workqueue.c:2250
 #2: ffffffff8c94c9e8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xa3/0x1280 net/ipv6/addrconf.c:4028
3 locks held by kworker/0:1/7:
1 lock held by khungtaskd/1653:
 #0: ffffffff8b363ea0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6254
1 lock held by khugepaged/1670:
 #0: 
ffffffff8b435ac8 (lock
#5
){+.+.}-{3:3}, at: lru_add_drain_all+0x5f/0x6f0 mm/swap.c:787
1 lock held by in:imklog/8181:
 #0: 
ffff8880114f2d70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:947
3 locks held by syz-executor691/8519:
 #0: ffffffff8c94c9e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
 #0: ffffffff8c94c9e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3f9/0xad0 net/core/rtnetlink.c:5561
 #1: ffff888031449290 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_open+0x225/0x4b0 drivers/net/wireguard/device.c:48
 #2: ffffffff8b36c8a8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline]
 #2: ffffffff8b36c8a8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x4f2/0x610 kernel/rcu/tree_exp.h:836
1 lock held by syz-executor691/8520:
 #0: ffffffff8c94c9e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
 #0: ffffffff8c94c9e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3f9/0xad0 net/core/rtnetlink.c:5561
1 lock held by syz-executor691/8521:
 #0: ffffffff8c94c9e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
 #0: ffffffff8c94c9e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3f9/0xad0 net/core/rtnetlink.c:5561
1 lock held by syz-executor691/8524:
 #0: ffffffff8c94c9e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
 #0: ffffffff8c94c9e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3f9/0xad0 net/core/rtnetlink.c:5561
3 locks held by kworker/1:0/8705:
 #0: 
ffff888020ea4538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
ffff888020ea4538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
ffff888020ea4538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
ffff888020ea4538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline]
ffff888020ea4538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline]
ffff888020ea4538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x871/0x15f0 kernel/workqueue.c:2246
 #1: 
ffffc90002047da8
 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15f0 kernel/workqueue.c:2250
 #2: ffffffff8c94c9e8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xa3/0x1280 net/ipv6/addrconf.c:4028
3 locks held by kworker/1:3/8738:
3 locks held by kworker/1:5/9801:
 #0: ffff888010062d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff888010062d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
 #0: ffff888010062d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
 #0: ffff888010062d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline]
 #0: ffff888010062d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline]
 #0: ffff888010062d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x871/0x15f0 kernel/workqueue.c:2246
 #1: ffffc9000a6bfda8 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15f0 kernel/workqueue.c:2250
 #2: ffffffff8c94c9e8 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xb/0x60 net/core/link_watch.c:250
2 locks held by systemd-journal/9867:

=============================================

NMI backtrace for cpu 1
CPU: 1 PID: 1653 Comm: khungtaskd Not tainted 5.11.0-rc2-next-20210106-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x107/0x163 lib/dump_stack.c:120
 nmi_cpu_backtrace.cold+0x44/0xd7 lib/nmi_backtrace.c:105
 nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:147 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:253 [inline]
 watchdog+0xd89/0xf30 kernel/hung_task.c:338
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 9867 Comm: systemd-journal Not tainted 5.11.0-rc2-next-20210106-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:match_held_lock+0xa/0x150 kernel/locking/lockdep.c:4894
Code: 0f 1f 44 00 00 48 8b 34 24 48 c7 c7 c0 1b 4a 89 e8 66 41 c7 ff cc cc cc cc cc cc cc cc cc cc cc 48 39 77 10 0f 84 97 00 00 00 <66> f7 47 22 f0 ff 74 4b 48 83 ec 08 48 8b 46 08 48 85 c0 0f 84 84
RSP: 0018:ffffc90000007788 EFLAGS: 00000083
RAX: 000000000000000f RBX: 0000000000000003 RCX: 1ffffffff19dfde3
RDX: 0000000000000000 RSI: ffffffff8b363de0 RDI: ffff88802496a608
RBP: ffffffff8b363de0 R08: 0000000000000000 R09: ffffffff8cefbd4f
R10: fffffbfff19df7a9 R11: 0000000000000001 R12: ffff888024969c00
R13: ffff88802496a590 R14: 00000000ffffffff R15: ffff88802496a608
FS:  00007fcd70eed8c0(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcd6e49d040 CR3: 000000001a9a4000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __lock_is_held kernel/locking/lockdep.c:5185 [inline]
 lock_is_held_type+0x7e/0x100 kernel/locking/lockdep.c:5476
 lock_is_held include/linux/lockdep.h:271 [inline]
 rcu_read_lock_sched_held+0x3a/0x70 kernel/rcu/update.c:125
 trace_lock_acquire include/trace/events/lock.h:13 [inline]
 lock_acquire+0x5c9/0x740 kernel/locking/lockdep.c:5408
 rcu_lock_acquire include/linux/rcupdate.h:265 [inline]
 rcu_read_lock include/linux/rcupdate.h:654 [inline]
 is_bpf_text_address+0x36/0x160 kernel/bpf/core.c:700
 kernel_text_address kernel/extable.c:151 [inline]
 kernel_text_address+0xbd/0xf0 kernel/extable.c:120
 __kernel_text_address+0x9/0x30 kernel/extable.c:105
 unwind_get_return_address arch/x86/kernel/unwind_orc.c:318 [inline]
 unwind_get_return_address+0x51/0x90 arch/x86/kernel/unwind_orc.c:313
 arch_stack_walk+0x93/0xe0 arch/x86/kernel/stacktrace.c:26
 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121
 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
 kasan_record_aux_stack+0xe5/0x110 mm/kasan/generic.c:345
 insert_work+0x48/0x370 kernel/workqueue.c:1331
 __queue_work+0x5c1/0xf00 kernel/workqueue.c:1497
 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1430
 expire_timers kernel/time/timer.c:1470 [inline]
 __run_timers.part.0+0x4a6/0xa50 kernel/time/timer.c:1744
 __run_timers kernel/time/timer.c:1725 [inline]
 run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1757
 __do_softirq+0x2a5/0x9f7 kernel/softirq.c:343
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
 do_softirq_own_stack+0xaa/0xd0 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:226 [inline]
 __irq_exit_rcu kernel/softirq.c:420 [inline]
 irq_exit_rcu+0x134/0x200 kernel/softirq.c:432
 sysvec_apic_timer_interrupt+0x4d/0x100 arch/x86/kernel/apic/apic.c:1096
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:628
RIP: 0010:check_kcov_mode kernel/kcov.c:163 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x1c/0x60 kernel/kcov.c:197
Code: e9 00 fd ff ff 66 0f 1f 84 00 00 00 00 00 65 8b 05 19 39 8f 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 00 f0 01 00 <a9> 00 01 ff 00 74 0e 85 c9 74 35 8b 82 d4 14 00 00 85 c0 74 2b 8b
RSP: 0018:ffffc9000160f908 EFLAGS: 00000246
RAX: 0000000080000000 RBX: 000000000000000c RCX: 0000000000000000
RDX: ffff888024969c00 RSI: ffffffff8387005a RDI: 0000000000000003
RBP: ffff888021019480 R08: 0000000000000000 R09: 000000000000000c
R10: ffffffff83870047 R11: 0000000000000010 R12: 0000000000000022
R13: 00000000000002f9 R14: dffffc0000000000 R15: 0000000000000000
 tomoyo_domain_quota_is_ok+0x31a/0x550 security/tomoyo/util.c:1092
 tomoyo_supervisor+0x2f2/0xef0 security/tomoyo/common.c:2089
 tomoyo_audit_path_log security/tomoyo/file.c:168 [inline]
 tomoyo_path_permission security/tomoyo/file.c:587 [inline]
 tomoyo_path_permission+0x270/0x3a0 security/tomoyo/file.c:573
 tomoyo_path_perm+0x2f0/0x400 security/tomoyo/file.c:838
 security_inode_getattr+0xcf/0x140 security/security.c:1280
 vfs_getattr fs/stat.c:121 [inline]
 vfs_fstat+0x43/0xb0 fs/stat.c:146
 __do_sys_newfstat+0x81/0x100 fs/stat.c:386
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fcd701a92e2
Code: 48 8b 05 b9 db 2b 00 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 83 ff 01 77 33 48 63 fe b8 05 00 00 00 48 89 d6 0f 05 <48> 3d 00 f0 ff ff 77 06 f3 c3 0f 1f 40 00 48 8b 15 81 db 2b 00 f7
RSP: 002b:00007fffb332f8f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000005
RAX: ffffffffffffffda RBX: 000055f3af2dab90 RCX: 00007fcd701a92e2
RDX: 00007fffb332f910 RSI: 00007fffb332f910 RDI: 0000000000000015
RBP: 00007fffb332fa80 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000080000 R11: 0000000000000246 R12: 000055f3af2dab90
R13: 00007fffb332fa10 R14: 000000000000001f R15: 000055f3af2d917f

Crashes (913):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/01/06 23:52 linux-next 7e4525a4232f c104d4a3 .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2023/01/24 14:22 upstream 7bf70dbb1882 9dfcf09c .config console log report syz [disk image] [vmlinux] [kernel image] ci2-upstream-fs INFO: task hung in rtnetlink_rcv_msg
2021/09/22 12:10 upstream 92477dd1faa6 169724fe .config console log report syz C ci-upstream-kasan-gce INFO: task hung in rtnetlink_rcv_msg
2019/02/17 08:10 upstream 64c0133eb88a f42dee6d .config console log report syz C ci-upstream-kasan-gce-root
2019/02/17 07:52 upstream 64c0133eb88a f42dee6d .config console log report syz C ci-upstream-kasan-gce-smack-root
2019/02/16 09:43 net-old 24f0a48743a2 f42dee6d .config console log report syz C ci-upstream-net-this-kasan-gce
2020/10/06 07:58 net-next-old c2568c8c9e63 1880b4a9 .config console log report syz C ci-upstream-net-kasan-gce
2019/02/16 15:27 net-next-old bb015f2216fe f42dee6d .config console log report syz C ci-upstream-net-kasan-gce
2021/10/21 07:32 linux-next 51dba6e335ff f111d03b .config console log report syz C ci-upstream-linux-next-kasan-gce-root INFO: task can't die in dev_deactivate_many
2021/10/20 21:08 linux-next 51dba6e335ff 418a00eb .config console log report syz C ci-upstream-linux-next-kasan-gce-root INFO: task can't die in dev_deactivate_many
2021/10/20 19:54 linux-next 51dba6e335ff 418a00eb .config console log report syz C ci-upstream-linux-next-kasan-gce-root INFO: task can't die in dev_deactivate_many
2019/02/16 09:44 linux-next 7a92eb7cc1dc f42dee6d .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2024/03/11 23:33 upstream 0f1a876682f0 6ee49f2e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in rtnetlink_rcv_msg
2024/03/08 13:12 upstream 3aaa8ce7a335 cf82cde1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in rtnetlink_rcv_msg
2024/03/05 13:56 upstream 90d35da658da 5fc53669 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in rtnetlink_rcv_msg
2024/03/05 00:32 upstream 90d35da658da 3717835d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in rtnetlink_rcv_msg
2024/03/02 19:40 upstream 5ad3cb0ed525 25905f5d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: task hung in rtnetlink_rcv_msg
2024/03/07 16:59 net 811b3f9b2ab5 2b789849 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in rtnetlink_rcv_msg
2024/03/03 19:44 net 1c61728be22c 25905f5d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in rtnetlink_rcv_msg
2024/03/03 14:31 net 1c61728be22c 25905f5d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in rtnetlink_rcv_msg
2024/03/03 13:59 net 1c61728be22c 25905f5d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in rtnetlink_rcv_msg
2024/03/03 11:36 net 1c61728be22c 25905f5d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in rtnetlink_rcv_msg
2024/03/02 17:47 net 1c61728be22c 25905f5d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in rtnetlink_rcv_msg
2021/06/28 22:55 bpf d6765985a42a 9d2ab5df .config console log report info ci-upstream-bpf-kasan-gce INFO: task hung in rtnetlink_rcv_msg
2024/03/11 12:34 net-next c2b25092864a 6ee49f2e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in rtnetlink_rcv_msg
2024/03/06 19:05 net-next eeb78df4063c f39a7eed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in rtnetlink_rcv_msg
2024/03/05 06:46 net-next 09fcde547761 5fc53669 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in rtnetlink_rcv_msg
2024/03/04 19:44 net-next 4a759c12526e 3717835d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in rtnetlink_rcv_msg
2024/03/04 18:25 net-next 4a759c12526e 3717835d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in rtnetlink_rcv_msg
2024/03/04 14:34 net-next 4a759c12526e 3717835d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in rtnetlink_rcv_msg
2024/02/12 23:49 linux-next ae00c445390b 77b23aa1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in rtnetlink_rcv_msg
2023/11/04 18:36 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 90b0c2b2edd1 500bfdc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in rtnetlink_rcv_msg
2023/02/02 20:40 git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes 0966d385830d 33fc5c09 .config console log report info ci-qemu2-riscv64 INFO: task hung in rtnetlink_rcv_msg
2024/03/12 09:04 upstream 045395d86acd 6ee49f2e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in __netlink_dump_start
2024/03/11 21:38 upstream 0f1a876682f0 6ee49f2e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in __netlink_dump_start
2024/03/10 00:54 upstream 09e5c48fea17 6ee49f2e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root INFO: task hung in __netlink_dump_start
2024/03/09 21:55 upstream 09e5c48fea17 6ee49f2e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in __netlink_dump_start
2024/03/09 20:39 upstream 09e5c48fea17 6ee49f2e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in __netlink_dump_start
2024/03/09 03:00 upstream 10d48d70e82d 96d142e7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in tun_chr_close
2024/03/08 17:27 upstream 3aaa8ce7a335 cf82cde1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in __netlink_dump_start
2024/03/08 02:00 upstream 135288b73cef 2b789849 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in __netlink_dump_start
2024/03/07 10:37 upstream 67be068d31d4 f39a7eed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root INFO: task hung in __netlink_dump_start
2024/03/05 21:05 upstream 90d35da658da f39a7eed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in __netlink_dump_start
2024/03/05 08:40 upstream 90d35da658da 5fc53669 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in __netlink_dump_start
2024/03/04 08:34 upstream 58c806d867bf 25905f5d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in __netlink_dump_start
2024/03/04 00:11 upstream 58c806d867bf 25905f5d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in __netlink_dump_start
2024/03/03 22:10 upstream 58c806d867bf 25905f5d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in __netlink_dump_start
2024/03/02 16:06 upstream 5ad3cb0ed525 25905f5d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: task hung in __netlink_dump_start
2023/05/21 03:21 upstream 0dd2a6fb1e34 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in sock_ioctl
2022/07/29 11:47 upstream 6e2c0490769e fef302b1 .config console log report info ci-upstream-kasan-gce INFO: task hung in ip_rt_ioctl
2021/12/15 21:04 upstream 2b14864acbaa 572bcb40 .config console log report info ci-upstream-kasan-gce-selinux-root INFO: task hung in ipv6_route_ioctl
2021/01/07 16:12 upstream 71c061d24438 c104d4a3 .config console log report info ci-upstream-kasan-gce
2019/11/30 13:21 upstream 81b6b96475ac 3a75be00 .config console log report ci-qemu-upstream
2024/03/12 10:52 net 84e95149bd34 6ee49f2e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in __netlink_dump_start
2024/03/12 01:06 net 84e95149bd34 6ee49f2e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in __netlink_dump_start
2024/03/11 09:55 net c8a5c731fd12 6ee49f2e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in tun_chr_close
2024/03/10 08:07 net c8a5c731fd12 6ee49f2e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in __netlink_dump_start
2024/03/10 06:02 net c8a5c731fd12 6ee49f2e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in __netlink_dump_start
2024/03/09 18:17 net c8a5c731fd12 6ee49f2e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in __netlink_dump_start
2024/03/09 00:34 net b446631f355e 96d142e7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in __netlink_dump_start
2024/03/08 07:59 net df4793505abd cf82cde1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in tun_chr_close
2024/03/07 23:33 net 811b3f9b2ab5 2b789849 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in __netlink_dump_start
2024/03/06 16:40 net b7fb7729c94f f39a7eed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in __netlink_dump_start
2024/03/06 14:04 net b7fb7729c94f f39a7eed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in __netlink_dump_start
2024/03/06 13:00 net b7fb7729c94f f39a7eed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in __netlink_dump_start
2024/03/06 07:31 net b7fb7729c94f f39a7eed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in __netlink_dump_start
2024/03/06 03:00 net 4daa873133d3 f39a7eed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in __netlink_dump_start
2024/03/05 18:34 net 4daa873133d3 f39a7eed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in __netlink_dump_start
2024/03/04 12:34 net 51270d573a8d 25905f5d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in __netlink_dump_start
2024/03/02 14:45 net 1c61728be22c 25905f5d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in __netlink_dump_start
2024/03/02 07:05 net 1c61728be22c 25905f5d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in __netlink_dump_start
2024/03/02 05:28 net 1c61728be22c 25905f5d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce INFO: task hung in __netlink_dump_start
2022/06/30 20:36 net-old 0a18d802d65c 1434eec0 .config console log report info ci-upstream-net-this-kasan-gce INFO: task hung in ip_setsockopt
2024/03/11 00:44 net-next d7e14e534493 6ee49f2e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce INFO: task hung in nl80211_pre_doit
2024/02/24 14:48 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 9abbc24128bc 8d446f15 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 INFO: task hung in __netlink_dump_start
2023/07/21 04:51 linux-next ae867bc97b71 28847498 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in dev_ioctl
2023/06/20 14:47 linux-next f7efed9f38f8 09ffe269 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in pipe_write
2021/10/21 08:46 linux-next 51dba6e335ff f111d03b .config console log report info ci-upstream-linux-next-kasan-gce-root INFO: task can't die in dev_deactivate_many
2021/10/21 02:12 linux-next 51dba6e335ff f111d03b .config console log report info ci-upstream-linux-next-kasan-gce-root INFO: task can't die in rtnetlink_rcv_msg
2021/09/20 13:15 linux-next 1f77990c4b79 70b76c1d .config console log report info ci-upstream-linux-next-kasan-gce-root INFO: task can't die in synchronize_rcu_expedited
* Struck through repros no longer work on HEAD.