syzbot |
sign-in | mailing list | source | docs |
| Title | Replies (including bot) | Last reply |
|---|---|---|
| [syzbot] Monthly block report (Dec 2025) | 0 (1) | 2025/12/30 09:52 |
| [syzbot] Monthly block report (Nov 2025) | 0 (1) | 2025/11/28 21:21 |
| [syzbot] [block?] INFO: task hung in queue_limits_commit_update_frozen | 0 (1) | 2025/08/28 08:44 |
INFO: task syz.1.1964:14677 blocked for more than 143 seconds.
Tainted: G L syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.1964 state:D stack:26984 pid:14677 tgid:14676 ppid:5816 task_flags:0x480140 flags:0x00080002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5256 [inline]
__schedule+0x1139/0x6150 kernel/sched/core.c:6863
__schedule_loop kernel/sched/core.c:6945 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6960
blk_mq_freeze_queue_wait+0x140/0x1b0 block/blk-mq.c:191
blk_mq_freeze_queue include/linux/blk-mq.h:954 [inline]
queue_limits_commit_update_frozen+0x93/0x110 block/blk-settings.c:603
nbd_set_size+0x4da/0x720 drivers/block/nbd.c:374
nbd_genl_size_set+0x2d7/0x3e0 drivers/block/nbd.c:2069
nbd_genl_reconfigure+0x604/0x1ca0 drivers/block/nbd.c:2373
genl_family_rcv_msg_doit+0x209/0x2f0 net/netlink/genetlink.c:1115
genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline]
genl_rcv_msg+0x55c/0x800 net/netlink/genetlink.c:1210
netlink_rcv_skb+0x158/0x420 net/netlink/af_netlink.c:2550
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x5aa/0x870 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x8c8/0xdd0 net/netlink/af_netlink.c:1894
sock_sendmsg_nosec net/socket.c:727 [inline]
__sock_sendmsg net/socket.c:742 [inline]
____sys_sendmsg+0xa5d/0xc30 net/socket.c:2592
___sys_sendmsg+0x134/0x1d0 net/socket.c:2646
__sys_sendmsg+0x16d/0x220 net/socket.c:2678
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc1c058f749
RSP: 002b:00007fc1c14fc038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fc1c07e5fa0 RCX: 00007fc1c058f749
RDX: 0000000020004100 RSI: 0000200000000100 RDI: 0000000000000005
RBP: 00007fc1c0613f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc1c07e6038 R14: 00007fc1c07e5fa0 R15: 00007fff6cf460f8
</TASK>
INFO: task syz.3.1966:14688 blocked for more than 143 seconds.
Tainted: G L syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.1966 state:D stack:26184 pid:14688 tgid:14687 ppid:8779 task_flags:0x400140 flags:0x00080002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5256 [inline]
__schedule+0x1139/0x6150 kernel/sched/core.c:6863
__schedule_loop kernel/sched/core.c:6945 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6960
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7017
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0xc69/0x1ca0 kernel/locking/mutex.c:776
genl_lock net/netlink/genetlink.c:35 [inline]
genl_op_lock net/netlink/genetlink.c:60 [inline]
genl_op_lock net/netlink/genetlink.c:57 [inline]
genl_rcv_msg+0x577/0x800 net/netlink/genetlink.c:1209
netlink_rcv_skb+0x158/0x420 net/netlink/af_netlink.c:2550
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x5aa/0x870 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x8c8/0xdd0 net/netlink/af_netlink.c:1894
sock_sendmsg_nosec net/socket.c:727 [inline]
__sock_sendmsg net/socket.c:742 [inline]
__sys_sendto+0x4a3/0x520 net/socket.c:2206
__do_sys_sendto net/socket.c:2213 [inline]
__se_sys_sendto net/socket.c:2209 [inline]
__x64_sys_sendto+0xe0/0x1c0 net/socket.c:2209
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2d9e9915dc
RSP: 002b:00007f2d9cbf4ec0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f2d9cbf4fc0 RCX: 00007f2d9e9915dc
RDX: 000000000000001c RSI: 00007f2d9cbf5010 RDI: 0000000000000008
RBP: 0000000000000000 R08: 00007f2d9cbf4f14 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000008
R13: 00007f2d9cbf4f68 R14: 00007f2d9cbf5010 R15: 0000000000000000
</TASK>
INFO: task syz.8.1967:14698 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.8.1967 state:D stack:28232 pid:14698 tgid:14689 ppid:8338 task_flags:0x400140 flags:0x00080002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5256 [inline]
__schedule+0x1139/0x6150 kernel/sched/core.c:6863
__schedule_loop kernel/sched/core.c:6945 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6960
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7017
__mutex_lock_common kernel/locking/mutex.c:692 [inline]
__mutex_lock+0xc69/0x1ca0 kernel/locking/mutex.c:776
genl_lock net/netlink/genetlink.c:35 [inline]
genl_op_lock net/netlink/genetlink.c:60 [inline]
genl_op_lock net/netlink/genetlink.c:57 [inline]
genl_rcv_msg+0x577/0x800 net/netlink/genetlink.c:1209
netlink_rcv_skb+0x158/0x420 net/netlink/af_netlink.c:2550
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x5aa/0x870 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x8c8/0xdd0 net/netlink/af_netlink.c:1894
sock_sendmsg_nosec net/socket.c:727 [inline]
__sock_sendmsg net/socket.c:742 [inline]
__sys_sendto+0x4a3/0x520 net/socket.c:2206
__do_sys_sendto net/socket.c:2213 [inline]
__se_sys_sendto net/socket.c:2209 [inline]
__x64_sys_sendto+0xe0/0x1c0 net/socket.c:2209
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8c8d3915dc
RSP: 002b:00007f8c8e25bec0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f8c8e25bfc0 RCX: 00007f8c8d3915dc
RDX: 0000000000000020 RSI: 00007f8c8e25c010 RDI: 000000000000000a
RBP: 0000000000000000 R08: 00007f8c8e25bf14 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 000000000000000a
R13: 00007f8c8e25bf68 R14: 00007f8c8e25c010 R15: 0000000000000000
</TASK>
Showing all locks held in the system:
1 lock held by khungtaskd/31:
#0: ffffffff8e3c96a0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8e3c96a0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline]
#0: ffffffff8e3c96a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x36/0x1c0 kernel/locking/lockdep.c:6775
2 locks held by dhcpcd/5486:
#0: ffffffff901e8c90 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:57 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x577/0x800 net/netlink/genetlink.c:1209
2 locks held by getty/5577:
#0: ffff88814d3550a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x41b/0x1510 drivers/tty/n_tty.c:2211
1 lock held by udevd/13879:
#0: ffff888141bda358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0x41a/0xe40 block/bdev.c:962
6 locks held by syz.1.1964/14677:
#0: ffffffff901e8c90 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:57 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x577/0x800 net/netlink/genetlink.c:1209
#2: ffff888027163a78 (&nbd->config_lock){+.+.}-{4:4}, at: nbd_genl_reconfigure+0x487/0x1ca0 drivers/block/nbd.c:2364
#3: ffff888141b59048 (&q->limits_lock){+.+.}-{4:4}, at: queue_limits_start_update include/linux/blkdev.h:1088 [inline]
#3: ffff888141b59048 (&q->limits_lock){+.+.}-{4:4}, at: nbd_set_size+0x2b6/0x720 drivers/block/nbd.c:354
#4: ffff888141b589e8 (&q->q_usage_counter(io)#50){++++}-{0:0}, at: blk_mq_freeze_queue_nomemsave+0x15/0x20 block/blk-mq.c:206
#5: ffff888141b58a20 (&q->q_usage_counter(queue)#34){+.+.}-{0:0}, at: blk_mq_freeze_queue_nomemsave+0x15/0x20 block/blk-mq.c:206
2 locks held by syz.3.1966/14688:
#0: ffffffff901e8c90 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:57 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x577/0x800 net/netlink/genetlink.c:1209
2 locks held by syz.8.1967/14698:
#0: ffffffff901e8c90 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:57 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x577/0x800 net/netlink/genetlink.c:1209
2 locks held by syz.4.1975/14734:
#0: ffffffff901e8c90 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:57 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x577/0x800 net/netlink/genetlink.c:1209
2 locks held by syz.9.1977/14737:
#0: ffffffff901e8c90 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:57 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x577/0x800 net/netlink/genetlink.c:1209
2 locks held by syz-executor/14741:
#0: ffffffff901e8c90 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:57 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x577/0x800 net/netlink/genetlink.c:1209
2 locks held by syz-executor/14751:
#0: ffffffff901e8c90 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:57 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x577/0x800 net/netlink/genetlink.c:1209
2 locks held by syz-executor/14753:
#0: ffffffff901e8c90 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:57 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x577/0x800 net/netlink/genetlink.c:1209
2 locks held by syz-executor/14770:
#0: ffffffff901e8c90 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:57 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x577/0x800 net/netlink/genetlink.c:1209
2 locks held by syz-executor/14779:
#0: ffffffff901e8c90 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:57 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x577/0x800 net/netlink/genetlink.c:1209
2 locks held by syz-executor/14788:
#0: ffffffff901e8c90 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:57 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x577/0x800 net/netlink/genetlink.c:1209
2 locks held by syz-executor/14798:
#0: ffffffff901e8c90 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:57 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x577/0x800 net/netlink/genetlink.c:1209
2 locks held by syz-executor/14800:
#0: ffffffff901e8c90 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:57 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x577/0x800 net/netlink/genetlink.c:1209
2 locks held by syz-executor/14815:
#0: ffffffff901e8c90 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:57 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x577/0x800 net/netlink/genetlink.c:1209
2 locks held by syz-executor/14824:
#0: ffffffff901e8c90 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:57 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x577/0x800 net/netlink/genetlink.c:1209
2 locks held by syz-executor/14835:
#0: ffffffff901e8c90 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:57 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x577/0x800 net/netlink/genetlink.c:1209
2 locks held by syz-executor/14837:
#0: ffffffff901e8c90 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:57 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x577/0x800 net/netlink/genetlink.c:1209
2 locks held by syz-executor/14839:
#0: ffffffff901e8c90 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:57 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x577/0x800 net/netlink/genetlink.c:1209
2 locks held by syz-executor/14863:
#0: ffffffff901e8c90 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:57 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x577/0x800 net/netlink/genetlink.c:1209
2 locks held by syz-executor/14872:
#0: ffffffff901e8c90 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_lock net/netlink/genetlink.c:35 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:60 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_op_lock net/netlink/genetlink.c:57 [inline]
#1: ffffffff901e8d48 (genl_mutex){+.+.}-{4:4}, at: genl_rcv_msg+0x577/0x800 net/netlink/genetlink.c:1209
=============================================
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 10/25/2025
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:161 [inline]
__sys_info lib/sys_info.c:157 [inline]
sys_info+0x133/0x180 lib/sys_info.c:165
check_hung_uninterruptible_tasks kernel/hung_task.c:346 [inline]
watchdog+0xe66/0x1180 kernel/hung_task.c:515
kthread+0x3c5/0x780 kernel/kthread.c:463
ret_from_fork+0x983/0xb10 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
</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 10/25/2025
RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:82
Code: 26 5f 02 c3 cc cc cc cc 0f 1f 00 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 13 99 11 00 fb f4 <e9> cc 35 03 00 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
RSP: 0018:ffffffff8e007df8 EFLAGS: 000002c6
RAX: 000000000252c793 RBX: 0000000000000000 RCX: ffffffff8b78c6d9
RDX: 0000000000000000 RSI: ffffffff8dacf2d0 RDI: ffffffff8bf2b280
RBP: fffffbfff1c12f68 R08: 0000000000000001 R09: ffffed101708673d
R10: ffff8880b84339eb R11: ffffffff8e098670 R12: 0000000000000000
R13: ffffffff8e097b40 R14: ffffffff9088cad0 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8881248f1000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e15c17aad8 CR3: 000000000e184000 CR4: 00000000003526f0
Call Trace:
<TASK>
arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline]
default_idle+0x13/0x20 arch/x86/kernel/process.c:767
default_idle_call+0x6c/0xb0 kernel/sched/idle.c:122
cpuidle_idle_call kernel/sched/idle.c:191 [inline]
do_idle+0x38d/0x510 kernel/sched/idle.c:332
cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:430
rest_init+0x16b/0x2b0 init/main.c:757
start_kernel+0x3ef/0x4d0 init/main.c:1206
x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:310
x86_64_start_kernel+0x130/0x190 arch/x86/kernel/head64.c:291
common_startup_64+0x13e/0x148
</TASK>
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026/01/18 13:09 | upstream | e84d960149e7 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-selinux-root | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/13 13:33 | upstream | b71e635feefc | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-selinux-root | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2025/11/20 19:52 | upstream | 23cb64fb7625 | 280ea308 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-smack-root | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2025/11/06 19:05 | upstream | c2c2ccfd4ba7 | 4e1406b4 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-kasan-gce-root | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/16 13:46 | net | 851822aec1a3 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/15 02:51 | net | 3879cffd9d07 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/13 09:04 | net | dfdf77465620 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/13 00:52 | net | f93fc5d12d69 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/12 09:43 | net | 16ce6e6fa946 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/12 02:19 | net | 16ce6e6fa946 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/11 16:51 | net | 16ce6e6fa946 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/10 08:25 | net | 7470a7a63dc1 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/09 20:45 | net | 872ac785e768 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/08 06:15 | net | 653267321f05 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/07 14:56 | net | 653267321f05 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/07 13:12 | net | 653267321f05 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/07 09:00 | net | 653267321f05 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/07 04:39 | net | 238e03d04662 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/07 01:53 | net | 238e03d04662 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/06 23:42 | net | 238e03d04662 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/06 18:51 | net | 238e03d04662 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/06 15:36 | net | d96bfb686742 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/06 13:41 | net | d96bfb686742 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/06 04:24 | net | d96bfb686742 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/06 02:57 | net | d96bfb686742 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/05 23:41 | net | 1806d210e5a8 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/05 17:39 | net | 1806d210e5a8 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/05 12:01 | net | 1806d210e5a8 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/05 05:21 | net | d7065436e8a0 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/05 02:54 | net | d7065436e8a0 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/05 01:20 | net | d7065436e8a0 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/04 23:18 | net | d7065436e8a0 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2025/08/28 05:27 | net | bd2902e0bcac | e12e5ba4 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2025/08/23 18:51 | net | ec79003c5f9d | bf27483f | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2025/08/15 06:37 | net | 065c31f2c691 | dcc075fb | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-this-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/18 18:33 | net-next | b4e486e2c46f | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/17 03:43 | net-next | 74ecff77dace | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/15 21:37 | net-next | cc75d43783f7 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/15 05:33 | net-next | 3b194343c250 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/14 19:52 | net-next | 3b194343c250 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/14 13:02 | net-next | c65182ef9df6 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/14 05:12 | net-next | c65182ef9df6 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/13 07:17 | net-next | 2f2d896ec59a | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/12 22:38 | net-next | 2f2d896ec59a | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/12 16:01 | net-next | 60d8484c4cec | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/09 15:35 | net-next | 59ba823e689f | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/09 05:55 | net-next | 59ba823e689f | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/06 17:43 | net-next | 956f569c90ab | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/05 15:01 | net-next | c303e8b86d9d | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/05 11:10 | net-next | c303e8b86d9d | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-net-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2026/01/14 02:15 | linux-next | 0f853ca2a798 | d6526ea3 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-rust-kasan-gce | INFO: task hung in queue_limits_commit_update_frozen | ||
| 2025/11/25 23:24 | linux-next | 92fd6e84175b | 64219f15 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci-upstream-linux-next-kasan-gce-root | INFO: task hung in queue_limits_commit_update_frozen |