INFO: task syz-executor.4:25982 blocked for more than 143 seconds.
Not tainted 5.10.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:28312 pid:25982 ppid: 8497 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4327 [inline]
__schedule+0x8cd/0x2150 kernel/sched/core.c:5078
schedule+0xcf/0x270 kernel/sched/core.c:5157
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5216
__mutex_lock_common kernel/locking/mutex.c:1033 [inline]
__mutex_lock+0x81a/0x1110 kernel/locking/mutex.c:1103
register_nexthop_notifier+0x7b/0x2e0 net/ipv4/nexthop.c:2167
ops_init+0xaf/0x470 net/core/net_namespace.c:152
setup_net+0x2de/0x850 net/core/net_namespace.c:342
copy_net_ns+0x31e/0x760 net/core/net_namespace.c:483
create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110
unshare_nsproxy_namespaces+0xbd/0x1f0 kernel/nsproxy.c:226
ksys_unshare+0x445/0x8e0 kernel/fork.c:2957
__do_sys_unshare kernel/fork.c:3025 [inline]
__se_sys_unshare kernel/fork.c:3023 [inline]
__x64_sys_unshare+0x2d/0x40 kernel/fork.c:3023
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e229
RSP: 002b:00007ffa494d4c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 000000000045e229
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000042000200
RBP: 000000000119c058 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c034
R13: 00007ffcab1d00af R14: 00007ffa494d59c0 R15: 000000000119c034
INFO: task syz-executor.4:26013 blocked for more than 143 seconds.
Not tainted 5.10.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:27992 pid:26013 ppid: 8497 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4327 [inline]
__schedule+0x8cd/0x2150 kernel/sched/core.c:5078
schedule+0xcf/0x270 kernel/sched/core.c:5157
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5216
__mutex_lock_common kernel/locking/mutex.c:1033 [inline]
__mutex_lock+0x81a/0x1110 kernel/locking/mutex.c:1103
smc_pnet_create_pnetids_list net/smc/smc_pnet.c:799 [inline]
smc_pnet_net_init+0x245/0x400 net/smc/smc_pnet.c:868
ops_init+0xaf/0x470 net/core/net_namespace.c:152
setup_net+0x2de/0x850 net/core/net_namespace.c:342
copy_net_ns+0x31e/0x760 net/core/net_namespace.c:483
create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110
unshare_nsproxy_namespaces+0xbd/0x1f0 kernel/nsproxy.c:226
ksys_unshare+0x445/0x8e0 kernel/fork.c:2957
__do_sys_unshare kernel/fork.c:3025 [inline]
__se_sys_unshare kernel/fork.c:3023 [inline]
__x64_sys_unshare+0x2d/0x40 kernel/fork.c:3023
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e229
RSP: 002b:00007ffa49492c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 000000000045e229
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000042000200
RBP: 000000000119c1a8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c184
R13: 00007ffcab1d00af R14: 00007ffa494939c0 R15: 000000000119c184
Showing all locks held in the system:
3 locks held by kworker/0:0/5:
#0: ffff888020992138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888020992138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
#0: ffff888020992138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
#0: ffff888020992138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline]
#0: ffff888020992138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline]
#0: ffff888020992138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 kernel/workqueue.c:2246
#1: ffffc90000ca7da8 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 kernel/workqueue.c:2250
#2: ffffffff8c911748 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4569
4 locks held by kworker/u4:5/233:
#0: ffff8881407a3138 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8881407a3138 ((wq_completion)netns){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
#0: ffff8881407a3138 ((wq_completion)netns){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
#0: ffff8881407a3138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline]
#0: ffff8881407a3138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline]
#0: ffff8881407a3138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x821/0x15a0 kernel/workqueue.c:2246
#1: ffffc9000198fda8 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 kernel/workqueue.c:2250
#2: ffffffff8c8ff510 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x9b/0xb10 net/core/net_namespace.c:566
#3: ffffffff8c911748 (rtnl_mutex){+.+.}-{3:3}, at: cangw_pernet_exit+0xe/0x20 net/can/gw.c:1241
1 lock held by khungtaskd/1656:
#0: ffffffff8b33a020 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6254
1 lock held by in:imklog/8165:
#0: ffff8880115665f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:932
3 locks held by kworker/0:16/10421:
#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+0x821/0x15a0 kernel/workqueue.c:2246
#1: ffffc90001d5fda8 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x854/0x15a0 kernel/workqueue.c:2250
#2: ffffffff8c911748 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:74
6 locks held by kworker/u4:9/20624:
2 locks held by syz-executor.4/25982:
#0: ffffffff8c8ff510 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2fa/0x760 net/core/net_namespace.c:479
#1: ffffffff8c911748 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x7b/0x2e0 net/ipv4/nexthop.c:2167
2 locks held by syz-executor.4/26013:
#0: ffffffff8c8ff510 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2fa/0x760 net/core/net_namespace.c:479
#1: ffffffff8c911748 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:799 [inline]
#1: ffffffff8c911748 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x245/0x400 net/smc/smc_pnet.c:868
2 locks held by syz-executor.5/25991:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 1656 Comm: khungtaskd Not tainted 5.10.0-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:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:209 [inline]
watchdog+0xd43/0xfa0 kernel/hung_task.c:294
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: 20624 Comm: kworker/u4:9 Not tainted 5.10.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: krdsd rds_connect_worker
RIP: 0010:lock_is_held_type+0x0/0x100 kernel/locking/lockdep.c:5465
Code: 65 c7 05 bb 96 1d 77 00 00 00 00 83 c0 01 89 85 20 09 00 00 89 85 3c 09 00 00 5b 5d c3 c3 66 90 66 2e 0f 1f 84 00 00 00 00 00 <41> 57 41 56 41 89 f6 41 55 41 54 55 48 89 fd 53 48 83 ec 08 e8 87
RSP: 0018:ffffc9000291f8e8 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff8156aa01
RDX: 1ffffffff166842e RSI: 00000000ffffffff RDI: ffffffff8b339f60
RBP: 1ffff92000523f22 R08: 0000000000000000 R09: ffffffff8ceb2c0f
R10: fffffbfff19d6581 R11: 0000000000000000 R12: 0000000000000001
R13: ffff88801139c380 R14: ffff88805c458000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f932d22c000 CR3: 000000002305f000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_is_held include/linux/lockdep.h:271 [inline]
rcu_read_lock_sched_held+0x3a/0x70 kernel/rcu/update.c:123
trace_lock_release include/trace/events/lock.h:58 [inline]
lock_release+0x5b7/0x710 kernel/locking/lockdep.c:5448
__raw_spin_unlock_bh include/linux/spinlock_api_smp.h:174 [inline]
_raw_spin_unlock_bh+0x12/0x30 kernel/locking/spinlock.c:207
spin_unlock_bh include/linux/spinlock.h:399 [inline]
inet_csk_find_open_port net/ipv4/inet_connection_sock.c:240 [inline]
inet_csk_get_port+0xae8/0x1690 net/ipv4/inet_connection_sock.c:367
__inet6_bind+0x5de/0x1a00 net/ipv6/af_inet6.c:406
inet6_bind+0xf0/0x170 net/ipv6/af_inet6.c:458
rds_tcp_conn_path_connect+0x399/0x880 net/rds/tcp_connect.c:144
rds_connect_worker+0x1a5/0x2c0 net/rds/threads.c:176
process_one_work+0x933/0x15a0 kernel/workqueue.c:2275
worker_thread+0x64c/0x1120 kernel/workqueue.c:2421
kthread+0x3b1/0x4a0 kernel/kthread.c:292
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296