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| ID | Workflow | Result | Correct | Bug | Created | Started | Finished | Revision | Error |
|---|---|---|---|---|---|---|---|---|---|
| 78f26c79-2a94-4d5f-a502-2eee291f9fd0 | assessment-security | DenialOfService: ✅ Exploitable: ❌ FilesystemTrigger: ❌ NetworkTrigger: ✅ PeripheralTrigger: ❌ RemoteTrigger: ✅ Unprivileged: ✅ UserNamespace: ❌ VMGuestTrigger: ❌ VMHostTrigger: ❌ | ❓ | INFO: task hung in netdev_rx_mode_work | 2026/05/26 08:16 | 2026/05/26 08:16 | 2026/05/26 09:21 | c69befb30ac10e158cc9d1557b508ee3f0eca1de |
| Title | Replies (including bot) | Last reply |
|---|---|---|
| [syzbot] [net?] INFO: task hung in netdev_rx_mode_work | 0 (1) | 2026/06/22 11:32 |
INFO: task kworker/1:0:24 blocked for more than 143 seconds.
Tainted: G L syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:0 state:D stack:21688 pid:24 tgid:24 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: events netdev_rx_mode_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5504 [inline]
__schedule+0x17d9/0x56c0 kernel/sched/core.c:7228
__schedule_loop kernel/sched/core.c:7307 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7322
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7379
__mutex_lock_common kernel/locking/mutex.c:726 [inline]
__mutex_lock+0x7bf/0x1550 kernel/locking/mutex.c:821
netdev_rx_mode_work+0x18/0x3c0 net/core/dev_addr_lists.c:1346
process_one_work kernel/workqueue.c:3322 [inline]
process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405
worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
INFO: task kworker/u8:26:8374 blocked for more than 143 seconds.
Tainted: G L syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:26 state:D stack:24760 pid:8374 tgid:8374 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: udp_tunnel_nic udp_tunnel_nic_device_sync_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5504 [inline]
__schedule+0x17d9/0x56c0 kernel/sched/core.c:7228
__schedule_loop kernel/sched/core.c:7307 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7322
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7379
__mutex_lock_common kernel/locking/mutex.c:726 [inline]
__mutex_lock+0x7bf/0x1550 kernel/locking/mutex.c:821
udp_tunnel_nic_device_sync_work+0x29/0xa20 net/ipv4/udp_tunnel_nic.c:736
process_one_work kernel/workqueue.c:3322 [inline]
process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405
worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
INFO: task kworker/u8:33:8384 blocked for more than 143 seconds.
Tainted: G L syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:33 state:D stack:22616 pid:8384 tgid:8384 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: netns cleanup_net
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5504 [inline]
__schedule+0x17d9/0x56c0 kernel/sched/core.c:7228
__schedule_loop kernel/sched/core.c:7307 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7322
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7379
__mutex_lock_common kernel/locking/mutex.c:726 [inline]
__mutex_lock+0x7bf/0x1550 kernel/locking/mutex.c:821
rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
unregister_netdevice_notifier_net+0x87/0x2f0 net/core/dev.c:2132
ops_exit_list net/core/net_namespace.c:199 [inline]
ops_undo_list+0x43d/0x8d0 net/core/net_namespace.c:252
cleanup_net+0x572/0x810 net/core/net_namespace.c:702
process_one_work kernel/workqueue.c:3322 [inline]
process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405
worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
INFO: task kworker/u8:54:8410 blocked for more than 144 seconds.
Tainted: G L syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:54 state:D stack:22648 pid:8410 tgid:8410 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5504 [inline]
__schedule+0x17d9/0x56c0 kernel/sched/core.c:7228
__schedule_loop kernel/sched/core.c:7307 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7322
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7379
__mutex_lock_common kernel/locking/mutex.c:726 [inline]
__mutex_lock+0x7bf/0x1550 kernel/locking/mutex.c:821
rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
addrconf_dad_work+0x116/0x15c0 net/ipv6/addrconf.c:4223
process_one_work kernel/workqueue.c:3322 [inline]
process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405
worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
INFO: task kworker/u8:56:8413 blocked for more than 144 seconds.
Tainted: G L syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:56 state:D stack:21656 pid:8413 tgid:8413 ppid:2 task_flags:0x4208160 flags:0x00080000
Workqueue: events_unbound linkwatch_event
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5504 [inline]
__schedule+0x17d9/0x56c0 kernel/sched/core.c:7228
__schedule_loop kernel/sched/core.c:7307 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7322
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7379
__mutex_lock_common kernel/locking/mutex.c:726 [inline]
__mutex_lock+0x7bf/0x1550 kernel/locking/mutex.c:821
linkwatch_event+0xe/0x60 net/core/link_watch.c:313
process_one_work kernel/workqueue.c:3322 [inline]
process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405
worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
INFO: task syz.1.2820:14939 blocked for more than 144 seconds.
Tainted: G L syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.2820 state:D stack:22344 pid:14939 tgid:14938 ppid:5642 task_flags:0x400140 flags:0x00080002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5504 [inline]
__schedule+0x17d9/0x56c0 kernel/sched/core.c:7228
__schedule_loop kernel/sched/core.c:7307 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7322
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7379
__mutex_lock_common kernel/locking/mutex.c:726 [inline]
__mutex_lock+0x7bf/0x1550 kernel/locking/mutex.c:821
netdev_lock include/linux/netdevice.h:2837 [inline]
netdev_lock_ops include/net/netdev_lock.h:42 [inline]
__ethtool_get_link_ksettings+0x109/0x250 net/ethtool/ioctl.c:463
bond_update_speed_duplex drivers/net/bonding/bond_main.c:801 [inline]
bond_slave_netdev_event drivers/net/bonding/bond_main.c:3982 [inline]
bond_netdev_event+0x643/0xf80 drivers/net/bonding/bond_main.c:4089
notifier_call_chain+0x1a5/0x3d0 kernel/notifier.c:85
call_netdevice_notifiers_extack net/core/dev.c:2288 [inline]
call_netdevice_notifiers net/core/dev.c:2302 [inline]
__dev_notify_flags+0x1aa/0x310 net/core/dev.c:9793
netif_change_flags+0xde/0x1b0 net/core/dev.c:9822
dev_change_flags+0x128/0x260 net/core/dev_api.c:68
vlan_device_event+0x1b4e/0x1f00 net/8021q/vlan.c:494
notifier_call_chain+0x1a5/0x3d0 kernel/notifier.c:85
call_netdevice_notifiers_extack net/core/dev.c:2288 [inline]
call_netdevice_notifiers net/core/dev.c:2302 [inline]
__dev_notify_flags+0x1aa/0x310 net/core/dev.c:9793
netif_change_flags+0xde/0x1b0 net/core/dev.c:9822
do_setlink+0xdd6/0x4670 net/core/rtnetlink.c:3207
rtnl_group_changelink net/core/rtnetlink.c:3855 [inline]
__rtnl_newlink net/core/rtnetlink.c:4023 [inline]
rtnl_newlink+0x148e/0x1bd0 net/core/rtnetlink.c:4151
rtnetlink_rcv_msg+0x802/0xc00 net/core/rtnetlink.c:7068
netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556
netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345
netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900
sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775
__sock_sendmsg net/socket.c:790 [inline]
____sys_sendmsg+0x54e/0x850 net/socket.c:2684
___sys_sendmsg+0x2a5/0x360 net/socket.c:2738
__sys_sendmsg net/socket.c:2770 [inline]
__do_sys_sendmsg net/socket.c:2775 [inline]
__se_sys_sendmsg net/socket.c:2773 [inline]
__x64_sys_sendmsg+0x1b1/0x290 net/socket.c:2773
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe3d0f9ce59
RSP: 002b:00007fe3d1f02028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fe3d1215fa0 RCX: 00007fe3d0f9ce59
RDX: 0000000000000000 RSI: 0000200000000180 RDI: 0000000000000005
RBP: 00007fe3d1032e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe3d1216038 R14: 00007fe3d1215fa0 R15: 00007fe3d133fa48
</TASK>
INFO: task syz.2.2821:14942 blocked for more than 145 seconds.
Tainted: G L syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.2821 state:D stack:27640 pid:14942 tgid:14941 ppid:14480 task_flags:0x400140 flags:0x00080002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5504 [inline]
__schedule+0x17d9/0x56c0 kernel/sched/core.c:7228
__schedule_loop kernel/sched/core.c:7307 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7322
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7379
__mutex_lock_common kernel/locking/mutex.c:726 [inline]
__mutex_lock+0x7bf/0x1550 kernel/locking/mutex.c:821
__tun_chr_ioctl+0x3bc/0x1e10 drivers/net/tun.c:3148
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:597 [inline]
__se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f15f679ce59
RSP: 002b:00007f15f76fe028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f15f6a15fa0 RCX: 00007f15f679ce59
RDX: 0000200000000200 RSI: 00000000400454ca RDI: 0000000000000006
RBP: 00007f15f6832e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f15f6a16038 R14: 00007f15f6a15fa0 R15: 00007f15f6b3fa48
</TASK>
INFO: task syz.4.2822:14945 blocked for more than 145 seconds.
Tainted: G L syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.2822 state:D stack:25400 pid:14945 tgid:14944 ppid:5646 task_flags:0x400140 flags:0x00080002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5504 [inline]
__schedule+0x17d9/0x56c0 kernel/sched/core.c:7228
__schedule_loop kernel/sched/core.c:7307 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7322
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7379
__mutex_lock_common kernel/locking/mutex.c:726 [inline]
__mutex_lock+0x7bf/0x1550 kernel/locking/mutex.c:821
rtnl_lock net/core/rtnetlink.c:80 [inline]
rtnl_nets_lock net/core/rtnetlink.c:341 [inline]
rtnl_newlink+0x8a3/0x1bd0 net/core/rtnetlink.c:4150
rtnetlink_rcv_msg+0x802/0xc00 net/core/rtnetlink.c:7068
netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556
netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345
netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900
sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775
__sock_sendmsg net/socket.c:790 [inline]
____sys_sendmsg+0x54e/0x850 net/socket.c:2684
___sys_sendmsg+0x2a5/0x360 net/socket.c:2738
__sys_sendmsg net/socket.c:2770 [inline]
__do_sys_sendmsg net/socket.c:2775 [inline]
__se_sys_sendmsg net/socket.c:2773 [inline]
__x64_sys_sendmsg+0x1b1/0x290 net/socket.c:2773
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f542239ce59
RSP: 002b:00007f542333c028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f5422615fa0 RCX: 00007f542239ce59
RDX: 0000000004004850 RSI: 0000200000000140 RDI: 0000000000000005
RBP: 00007f5422432e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5422616038 R14: 00007f5422615fa0 R15: 00007f542273fa48
</TASK>
INFO: task syz.3.2824:14951 blocked for more than 146 seconds.
Tainted: G L syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.2824 state:D stack:28088 pid:14951 tgid:14950 ppid:12404 task_flags:0x400040 flags:0x00080002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5504 [inline]
__schedule+0x17d9/0x56c0 kernel/sched/core.c:7228
__schedule_loop kernel/sched/core.c:7307 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7322
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7379
__mutex_lock_common kernel/locking/mutex.c:726 [inline]
__mutex_lock+0x7bf/0x1550 kernel/locking/mutex.c:821
rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
dev_ioctl+0x83c/0x1150 net/core/dev_ioctl.c:842
sock_ioctl+0x753/0x7e0 net/socket.c:1346
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:597 [inline]
__se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2485f9ce59
RSP: 002b:00007f2486dcd028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f2486215fa0 RCX: 00007f2485f9ce59
RDX: 0000200000000340 RSI: 00000000000089f1 RDI: 0000000000000005
RBP: 00007f2486032e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2486216038 R14: 00007f2486215fa0 R15: 00007f248633fa48
</TASK>
INFO: task syz.3.2824:14952 blocked for more than 146 seconds.
Tainted: G L syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.2824 state:D stack:27248 pid:14952 tgid:14950 ppid:12404 task_flags:0x400040 flags:0x00080002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5504 [inline]
__schedule+0x17d9/0x56c0 kernel/sched/core.c:7228
__schedule_loop kernel/sched/core.c:7307 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7322
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7379
__mutex_lock_common kernel/locking/mutex.c:726 [inline]
__mutex_lock+0x7bf/0x1550 kernel/locking/mutex.c:821
rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
dev_ioctl+0x83c/0x1150 net/core/dev_ioctl.c:842
sock_ioctl+0x753/0x7e0 net/socket.c:1346
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:597 [inline]
__se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2485f9ce59
RSP: 002b:00007f2486dac028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f2486216090 RCX: 00007f2485f9ce59
RDX: 0000200000000340 RSI: 00000000000089f2 RDI: 0000000000000007
RBP: 00007f2486032e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2486216128 R14: 00007f2486216090 R15: 00007f248633fa48
</TASK>
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
INFO: task syz.0.2827:14958 blocked for more than 146 seconds.
Tainted: G L syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.2827 state:D stack:25480 pid:14958 tgid:14957 ppid:5645 task_flags:0x400140 flags:0x00080002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5504 [inline]
__schedule+0x17d9/0x56c0 kernel/sched/core.c:7228
__schedule_loop kernel/sched/core.c:7307 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7322
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7379
__mutex_lock_common kernel/locking/mutex.c:726 [inline]
__mutex_lock+0x7bf/0x1550 kernel/locking/mutex.c:821
rtnl_lock net/core/rtnetlink.c:80 [inline]
rtnl_nets_lock net/core/rtnetlink.c:341 [inline]
rtnl_newlink+0x8a3/0x1bd0 net/core/rtnetlink.c:4150
rtnetlink_rcv_msg+0x802/0xc00 net/core/rtnetlink.c:7068
netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556
netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345
netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900
sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775
__sock_sendmsg net/socket.c:790 [inline]
____sys_sendmsg+0x54e/0x850 net/socket.c:2684
___sys_sendmsg+0x2a5/0x360 net/socket.c:2738
__sys_sendmsg net/socket.c:2770 [inline]
__do_sys_sendmsg net/socket.c:2775 [inline]
__se_sys_sendmsg net/socket.c:2773 [inline]
__x64_sys_sendmsg+0x1b1/0x290 net/socket.c:2773
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f59bab9ce59
RSP: 002b:00007f59b8df6028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f59bae15fa0 RCX: 00007f59bab9ce59
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000005
RBP: 00007f59bac32e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f59bae16038 R14: 00007f59bae15fa0 R15: 00007f59baf3fa48
</TASK>
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
INFO: task syz.0.2827:14959 blocked for more than 147 seconds.
Tainted: G L syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.2827 state:D stack:27536 pid:14959 tgid:14957 ppid:5645 task_flags:0x400140 flags:0x00080002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5504 [inline]
__schedule+0x17d9/0x56c0 kernel/sched/core.c:7228
__schedule_loop kernel/sched/core.c:7307 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7322
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7379
__mutex_lock_common kernel/locking/mutex.c:726 [inline]
__mutex_lock+0x7bf/0x1550 kernel/locking/mutex.c:821
rtnl_lock net/core/rtnetlink.c:80 [inline]
rtnetlink_rcv_msg+0x767/0xc00 net/core/rtnetlink.c:7074
netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556
netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
netlink_unicast+0x7bb/0x940 net/netlink/af_netlink.c:1345
netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900
sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775
__sock_sendmsg net/socket.c:790 [inline]
____sys_sendmsg+0x54e/0x850 net/socket.c:2684
___sys_sendmsg+0x2a5/0x360 net/socket.c:2738
__sys_sendmsg net/socket.c:2770 [inline]
__do_sys_sendmsg net/socket.c:2775 [inline]
__se_sys_sendmsg net/socket.c:2773 [inline]
__x64_sys_sendmsg+0x1b1/0x290 net/socket.c:2773
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f59bab9ce59
RSP: 002b:00007f59b8dd5028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f59bae16090 RCX: 00007f59bab9ce59
RDX: 0000000000008800 RSI: 0000200000000100 RDI: 0000000000000005
RBP: 00007f59bac32e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f59bae16128 R14: 00007f59bae16090 R15: 00007f59baf3fa48
</TASK>
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
<TASK>
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:122
nmi_trigger_cpumask_backtrace+0x17a/0x380 lib/nmi_backtrace.c:65
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
__sys_info lib/sys_info.c:157 [inline]
sys_info+0x135/0x170 lib/sys_info.c:165
check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline]
watchdog+0xfd7/0x1030 kernel/hung_task.c:561
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:64
Code: 6c 7a 02 e9 13 05 03 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 33 d8 1a 00 fb f4 <c3> cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90
RSP: 0018:ffffffff8e607de0 EFLAGS: 00000246
RAX: ffff888125251000 RBX: ffffffff819a72e0 RCX: 0000000080000001
RDX: 0000000000000001 RSI: ffffffff8c2a8d60 RDI: ffffffff819a72e0
RBP: ffffffff8e607eb8 R08: ffff8880b86338db R09: 1ffff110170c671b
R10: dffffc0000000000 R11: ffffed10170c671c R12: 0000000000000000
R13: 1ffffffff1cd1de8 R14: 1ffffffff1cc0fc4 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff888125251000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f11a3347e20 CR3: 000000000e746000 CR4: 00000000003526f0
Call Trace:
<TASK>
arch_safe_halt arch/x86/kernel/process.c:766 [inline]
default_idle+0x9/0x20 arch/x86/kernel/process.c:767
default_idle_call+0x72/0xb0 kernel/sched/idle.c:122
cpuidle_idle_call kernel/sched/idle.c:199 [inline]
do_idle+0x2e0/0x540 kernel/sched/idle.c:355
cpu_startup_entry+0x43/0x60 kernel/sched/idle.c:454
rest_init+0x2de/0x300 init/main.c:717
start_kernel+0x392/0x3e0 init/main.c:1175
x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310
x86_64_start_kernel+0x137/0x1b0 arch/x86/kernel/head64.c:291
common_startup_64+0x13e/0x157
</TASK>
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026/06/22 21:20 | upstream | ef0c9f75a195 | 5a630be6 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/06/22 20:28 | upstream | ef0c9f75a195 | 5a630be6 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/06/22 18:44 | upstream | ef0c9f75a195 | 5a630be6 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/06/21 13:22 | upstream | 390d73adf896 | 43bfcdb0 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/06/19 22:00 | upstream | c98d767b3457 | 43bfcdb0 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/06/19 21:38 | upstream | c98d767b3457 | 43bfcdb0 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/06/18 04:30 | upstream | e771677c937d | b62b3ded | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/06/11 18:38 | upstream | 9716c086c8e8 | d93a6ab6 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/06/02 15:04 | upstream | 6f3ed7fec72f | 62fe1528 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-smack-root | INFO: task hung in netdev_rx_mode_work | ||
| 2026/05/24 16:19 | upstream | 4cbfe4502e3d | c69befb3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-root | INFO: task hung in netdev_rx_mode_work | ||
| 2026/05/24 01:41 | upstream | 79bd2dded182 | c69befb3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-selinux-root | INFO: task hung in netdev_rx_mode_work | ||
| 2026/05/17 03:23 | upstream | 6916d5703ddf | de5aae85 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/05/07 09:35 | upstream | 5862221fdded | f250db59 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/04/27 06:40 | upstream | 20b64cf8705a | 9c2d0995 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-selinux-root | INFO: task hung in netdev_rx_mode_work | ||
| 2026/06/20 23:54 | upstream | 1a3746ccbb0a | 43bfcdb0 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-386 | INFO: task hung in netdev_rx_mode_work | ||
| 2026/06/20 18:11 | upstream | 1a3746ccbb0a | 43bfcdb0 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-386 | INFO: task hung in netdev_rx_mode_work | ||
| 2026/06/20 09:05 | upstream | 1a3746ccbb0a | 43bfcdb0 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-386 | INFO: task hung in netdev_rx_mode_work | ||
| 2026/06/20 06:10 | net | 96e7f9122aae | 43bfcdb0 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/06/14 12:21 | net | a4004aa0debf | 1d2f3589 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/06/13 09:44 | net | e26657fe3b85 | 1d2f3589 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/05/30 11:02 | net | 78ef59e7a645 | 6b4a8443 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/05/27 02:27 | net | c66d7c3c1f17 | 2b01f00e | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/05/24 09:11 | net | 87a1e0fe7776 | c69befb3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/05/09 12:24 | net | 496c0c4c53bb | 29233ece | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/05/09 10:37 | net | 496c0c4c53bb | 29233ece | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/06/18 11:20 | net-next | b85966adbf5d | a776b0d0 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/06/18 10:40 | net-next | b85966adbf5d | a776b0d0 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/06/18 08:48 | net-next | b85966adbf5d | b62b3ded | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/06/18 07:38 | net-next | b85966adbf5d | b62b3ded | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/06/18 07:31 | net-next | b85966adbf5d | b62b3ded | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/06/18 05:50 | net-next | b85966adbf5d | b62b3ded | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/06/18 05:41 | net-next | b85966adbf5d | b62b3ded | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/06/18 05:25 | net-next | b85966adbf5d | b62b3ded | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/06/18 04:56 | net-next | b85966adbf5d | b62b3ded | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/06/18 04:34 | net-next | b85966adbf5d | b62b3ded | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/06/18 03:30 | net-next | b85966adbf5d | b62b3ded | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/06/18 02:15 | net-next | b85966adbf5d | b62b3ded | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/06/17 23:57 | net-next | b85966adbf5d | b62b3ded | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: task hung in netdev_rx_mode_work | ||
| 2026/05/28 21:08 | linux-next | f7af91adc230 | 9a5a7e5e | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-linux-next-kasan-gce-root | INFO: task hung in netdev_rx_mode_work | ||
| 2026/04/29 17:43 | linux-next | 0787c45ea08a | 804ea88f | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-linux-next-kasan-gce-root | INFO: task hung in netdev_rx_mode_work |