INFO: task syz-executor:8441 blocked for more than 143 seconds.
Not tainted 6.12.0-syzkaller-05480-gfcc79e1714e8 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:24800 pid:8441 tgid:8441 ppid:1 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x1850/0x4c30 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
__mutex_lock_common kernel/locking/mutex.c:665 [inline]
__mutex_lock+0x7e7/0xee0 kernel/locking/mutex.c:735
add_one_compat_dev+0x10d/0x710 drivers/infiniband/core/device.c:949
rdma_dev_init_net+0x1f1/0x280 drivers/infiniband/core/device.c:1191
ops_init+0x31e/0x590 net/core/net_namespace.c:138
setup_net+0x287/0x9e0 net/core/net_namespace.c:362
copy_net_ns+0x33f/0x570 net/core/net_namespace.c:500
create_new_namespaces+0x425/0x7b0 kernel/nsproxy.c:110
unshare_nsproxy_namespaces+0x124/0x180 kernel/nsproxy.c:228
ksys_unshare+0x57d/0xa70 kernel/fork.c:3314
__do_sys_unshare kernel/fork.c:3385 [inline]
__se_sys_unshare kernel/fork.c:3383 [inline]
__x64_sys_unshare+0x38/0x40 kernel/fork.c:3383
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f336eb80017
RSP: 002b:00007ffd2dcff388 EFLAGS: 00000202 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007f336ed35f40 RCX: 00007f336eb80017
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 00007f336ed36738 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000008
R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000000
Showing all locks held in the system:
1 lock held by ksoftirqd/0/16:
1 lock held by khungtaskd/30:
#0: ffffffff8e93c860 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e93c860 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e93c860 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6744
4 locks held by kworker/u8:8/3567:
#0: ffff888145ad9948 ((wq_completion)ib-unreg-wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff888145ad9948 ((wq_completion)ib-unreg-wq){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc9000c7bfd00 ((work_completion)(&device->unregistration_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc9000c7bfd00 ((work_completion)(&device->unregistration_work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffff888056c4c6b0 (&device->unregistration_lock){+.+.}-{4:4}, at: __ib_unregister_device+0x264/0x3d0 drivers/infiniband/core/device.c:1514
#3: ffffffff8fa4f730 (devices_rwsem){++++}-{4:4}, at: disable_device+0xc0/0x360 drivers/infiniband/core/device.c:1273
2 locks held by getty/5604:
#0: ffff8880355e20a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900032e32f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
3 locks held by kworker/u8:14/7916:
#0: ffff888145adc948 ((wq_completion)gid-cache-wq){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff888145adc948 ((wq_completion)gid-cache-wq){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc90005457d00 ((work_completion)(&ndev_work->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc90005457d00 ((work_completion)(&ndev_work->work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffffffff8fa4f730 (devices_rwsem){++++}-{4:4}, at: ib_enum_all_roce_netdevs+0x88/0x180 drivers/infiniband/core/device.c:2379
4 locks held by kworker/u8:15/7919:
#0: ffff88801baed948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801baed948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc900053f7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc900053f7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffffffff8fcd5810 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:586
#3: ffffffff8fce2348 (rtnl_mutex){+.+.}-{4:4}, at: netdev_wait_allrefs_any net/core/dev.c:10780 [inline]
#3: ffffffff8fce2348 (rtnl_mutex){+.+.}-{4:4}, at: netdev_run_todo+0x7b2/0x1000 net/core/dev.c:10899
2 locks held by syz-executor/8368:
#0: ffffffff8fcd5810 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:496
#1: ffffffff8fa4f8f0 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_exit_net+0x8e/0x350 drivers/infiniband/core/device.c:1129
2 locks held by syz-executor/8371:
#0: ffffffff8fcd5810 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:496
#1: ffffffff8fa4f8f0 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_exit_net+0x8e/0x350 drivers/infiniband/core/device.c:1129
2 locks held by syz-executor/8374:
#0: ffffffff8fcd5810 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:496
#1: ffffffff8fce2348 (rtnl_mutex){+.+.}-{4:4}, at: netdev_wait_allrefs_any net/core/dev.c:10780 [inline]
#1: ffffffff8fce2348 (rtnl_mutex){+.+.}-{4:4}, at: netdev_run_todo+0x7b2/0x1000 net/core/dev.c:10899
2 locks held by syz-executor/8376:
#0: ffffffff8fcd5810 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:496
#1: ffffffff8fce2348 (rtnl_mutex){+.+.}-{4:4}, at: netdev_wait_allrefs_any net/core/dev.c:10780 [inline]
#1: ffffffff8fce2348 (rtnl_mutex){+.+.}-{4:4}, at: netdev_run_todo+0x7b2/0x1000 net/core/dev.c:10899
2 locks held by syz-executor/8391:
#0: ffffffff8fcd5810 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:496
#1: ffffffff8fce2348 (rtnl_mutex){+.+.}-{4:4}, at: netdev_wait_allrefs_any net/core/dev.c:10780 [inline]
#1: ffffffff8fce2348 (rtnl_mutex){+.+.}-{4:4}, at: netdev_run_todo+0x7b2/0x1000 net/core/dev.c:10899
3 locks held by syz-executor/8397:
#0: ffffffff8fcd5810 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:496
#1: ffffffff8fce2348 (rtnl_mutex){+.+.}-{4:4}, at: setup_net+0x602/0x9e0 net/core/net_namespace.c:384
#2: ffffffff8e7d63d0 (cpu_hotplug_lock){++++}-{0:0}, at: flush_all_backlogs net/core/dev.c:6031 [inline]
#2: ffffffff8e7d63d0 (cpu_hotplug_lock){++++}-{0:0}, at: unregister_netdevice_many_notify+0x5ea/0x1da0 net/core/dev.c:11501
2 locks held by syz-executor/8432:
#0: ffffffff8fcd5810 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:496
#1: ffffffff8fce2348 (rtnl_mutex){+.+.}-{4:4}, at: netdev_wait_allrefs_any net/core/dev.c:10780 [inline]
#1: ffffffff8fce2348 (rtnl_mutex){+.+.}-{4:4}, at: netdev_run_todo+0x7b2/0x1000 net/core/dev.c:10899
4 locks held by syz-executor/8435:
#0: ffffffff8fcd5810 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:496
#1: ffffffff8fa4f730 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x198/0x280 drivers/infiniband/core/device.c:1185
#2: ffffffff8fa4f8f0 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x1e6/0x280 drivers/infiniband/core/device.c:1190
#3: ffff888056c4cf38 (&device->compat_devs_mutex){+.+.}-{4:4}, at: add_one_compat_dev+0x10d/0x710 drivers/infiniband/core/device.c:949
6 locks held by syz-executor/8438:
#0: ffffffff8fcd5810 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:496
#1: ffffffff8fa4f730 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x198/0x280 drivers/infiniband/core/device.c:1185
#2: ffffffff8fa4f8f0 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x1e6/0x280 drivers/infiniband/core/device.c:1190
#3: ffff888056c4cf38 (&device->compat_devs_mutex){+.+.}-{4:4}, at: add_one_compat_dev+0x10d/0x710 drivers/infiniband/core/device.c:949
#4: ffff888056c4d230 (&rxe->usdev_lock){+.+.}-{4:4}, at: rxe_query_port+0x61/0x260 drivers/infiniband/sw/rxe/rxe_verbs.c:54
#5: ffffffff8fce2348 (rtnl_mutex){+.+.}-{4:4}, at: ib_get_eth_speed+0x153/0x800 drivers/infiniband/core/verbs.c:1995
4 locks held by syz-executor/8441:
#0: ffffffff8fcd5810 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:496
#1: ffffffff8fa4f730 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x198/0x280 drivers/infiniband/core/device.c:1185
#2: ffffffff8fa4f8f0 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x1e6/0x280 drivers/infiniband/core/device.c:1190
#3: ffff888056c4cf38 (&device->compat_devs_mutex){+.+.}-{4:4}, at: add_one_compat_dev+0x10d/0x710 drivers/infiniband/core/device.c:949
2 locks held by syz-executor/8444:
#0: ffffffff8fcd5810 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:496
#1: ffffffff8fce2348 (rtnl_mutex){+.+.}-{4:4}, at: ip_tunnel_init_net+0x20e/0x720 net/ipv4/ip_tunnel.c:1159
3 locks held by syz-executor/8453:
#0: ffffffff8fcd5810 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:496
#1: ffffffff8fa4f730 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x198/0x280 drivers/infiniband/core/device.c:1185
#2: ffffffff8fa4f8f0 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x1e6/0x280 drivers/infiniband/core/device.c:1190
2 locks held by syz-executor/8455:
#0: ffffffff8fcd5810 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:496
#1: ffffffff8fa4f730 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x198/0x280 drivers/infiniband/core/device.c:1185
2 locks held by syz-executor/8458:
#0: ffffffff8fcd5810 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:496
#1: ffffffff8fa4f730 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x198/0x280 drivers/infiniband/core/device.c:1185
2 locks held by syz-executor/8461:
#0: ffffffff8fcd5810 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:496
#1: ffffffff8fa4f730 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x198/0x280 drivers/infiniband/core/device.c:1185
2 locks held by syz-executor/8465:
#0: ffffffff8fcd5810 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:496
#1: ffffffff8fa4f730 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x198/0x280 drivers/infiniband/core/device.c:1185
2 locks held by syz-executor/8469:
#0: ffffffff8fcd5810 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:496
#1: ffffffff8fa4f730 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x198/0x280 drivers/infiniband/core/device.c:1185
2 locks held by syz-executor/8472:
#0: ffffffff8fcd5810 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:496
#1: ffffffff8fa4f730 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x198/0x280 drivers/infiniband/core/device.c:1185
2 locks held by syz-executor/8475:
#0: ffffffff8fcd5810 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:496
#1: ffffffff8fa4f730 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x198/0x280 drivers/infiniband/core/device.c:1185
2 locks held by syz-executor/8478:
#0: ffffffff8fcd5810 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:496
#1: ffffffff8fa4f730 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x198/0x280 drivers/infiniband/core/device.c:1185
2 locks held by syz-executor/8482:
#0: ffffffff8fcd5810 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:496
#1: ffffffff8fa4f730 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x198/0x280 drivers/infiniband/core/device.c:1185
1 lock held by syz-executor/8486:
#0: ffffffff8fce2348 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:128 [inline]
#0: ffffffff8fce2348 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x47e/0x1bd0 net/ipv4/devinet.c:987
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-syzkaller-05480-gfcc79e1714e8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xff4/0x1040 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.12.0-syzkaller-05480-gfcc79e1714e8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:check_preemption_disabled+0x4/0x120 lib/smp_processor_id.c:13
Code: 8c 48 c7 c6 c0 31 61 8c eb 1c 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 57 41 56 <41> 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 65
RSP: 0018:ffffc90000156058 EFLAGS: 00000202
RAX: 0000000000000100 RBX: 0000000000000001 RCX: ffffffff8999248d
RDX: ffff88801d2bda00 RSI: ffffffff8c6131c0 RDI: ffffffff8c613180
RBP: 0000000000000001 R08: ffffffff899924b3 R09: 1ffffffff203c906
R10: dffffc0000000000 R11: fffffbfff203c907 R12: ffff88805c9f6000
R13: ffff88805caf0000 R14: 0000000000000000 R15: ffff8880a4c81640
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2fd14d CR3: 000000000e738000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
rcu_is_watching+0x15/0xb0 kernel/rcu/tree.c:737
trace_netif_rx_exit+0x7d/0x210 include/trace/events/net.h:302
__netif_rx+0x81/0xc0 net/core/dev.c:5222
veth_forward_skb drivers/net/veth.c:322 [inline]
veth_xmit+0x61a/0xad0 drivers/net/veth.c:375
__netdev_start_xmit include/linux/netdevice.h:5002 [inline]
netdev_start_xmit include/linux/netdevice.h:5011 [inline]
xmit_one net/core/dev.c:3590 [inline]
dev_hard_start_xmit+0x27a/0x7e0 net/core/dev.c:3606
__dev_queue_xmit+0x1b73/0x3f50 net/core/dev.c:4434
dev_queue_xmit include/linux/netdevice.h:3168 [inline]
br_dev_queue_push_xmit+0x726/0x900 net/bridge/br_forward.c:53
NF_HOOK+0x700/0x7c0 include/linux/netfilter.h:314
br_nf_post_routing+0xa20/0xe80 net/bridge/br_netfilter_hooks.c:997
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_slow+0xc3/0x220 net/netfilter/core.c:626
nf_hook include/linux/netfilter.h:269 [inline]
NF_HOOK+0x2a7/0x460 include/linux/netfilter.h:312
br_forward_finish+0xd8/0x130 net/bridge/br_forward.c:66
br_nf_forward_finish+0xb49/0xfb0 net/bridge/br_netfilter_hooks.c:693
NF_HOOK+0x700/0x7c0 include/linux/netfilter.h:314
br_nf_forward_ip+0x61e/0x7b0 net/bridge/br_netfilter_hooks.c:747
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_slow+0xc3/0x220 net/netfilter/core.c:626
nf_hook include/linux/netfilter.h:269 [inline]
NF_HOOK+0x2a7/0x460 include/linux/netfilter.h:312
__br_forward+0x489/0x660 net/bridge/br_forward.c:115
br_handle_frame_finish+0x18ba/0x1fe0 net/bridge/br_input.c:215
br_nf_hook_thresh+0x472/0x590
br_nf_pre_routing_finish_ipv6+0xaa0/0xdd0
NF_HOOK include/linux/netfilter.h:314 [inline]
br_nf_pre_routing_ipv6+0x379/0x770 net/bridge/br_netfilter_ipv6.c:184
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:277 [inline]
br_handle_frame+0x9fd/0x1530 net/bridge/br_input.c:424
__netif_receive_skb_core+0x14eb/0x4690 net/core/dev.c:5566
__netif_receive_skb_one_core net/core/dev.c:5670 [inline]
__netif_receive_skb+0x12f/0x650 net/core/dev.c:5785
process_backlog+0x662/0x15b0 net/core/dev.c:6117
__napi_poll+0xcb/0x490 net/core/dev.c:6877
napi_poll net/core/dev.c:6946 [inline]
net_rx_action+0x89b/0x1240 net/core/dev.c:7068
handle_softirqs+0x2c5/0x980 kernel/softirq.c:554
run_ksoftirqd+0xca/0x130 kernel/softirq.c:943
smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244