INFO: task syz-executor:13311 blocked for more than 150 seconds.
Not tainted 6.13.0-rc2-syzkaller-00390-g9bc5c9515b48 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:23512 pid:13311 tgid:13311 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:950
rdma_dev_init_net+0x1f1/0x280 drivers/infiniband/core/device.c:1192
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:516
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:3334
__do_sys_unshare kernel/fork.c:3405 [inline]
__se_sys_unshare kernel/fork.c:3403 [inline]
__x64_sys_unshare+0x38/0x40 kernel/fork.c:3403
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: 0033:0x7fa182d87517
RSP: 002b:00007ffc453a0818 EFLAGS: 00000206 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007fa182f75f40 RCX: 00007fa182d87517
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 00007fa182f76738 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000008
R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000000
Showing all locks held in the system:
4 locks held by kworker/u8:1/12:
1 lock held by khungtaskd/30:
#0: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6744
2 locks held by getty/5587:
#0: ffff8880310df0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
3 locks held by kworker/0:12/7150:
#0: ffff88801ac80948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801ac80948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3310
#1: ffffc9000c437d00 (deferred_process_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc9000c437d00 (deferred_process_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3310
#2: ffffffff8fcb1f08 (rtnl_mutex){+.+.}-{4:4}, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104
2 locks held by kworker/u8:27/7188:
5 locks held by kworker/u8:33/7194:
#0: ffff88801baf5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801baf5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3310
#1: ffffc9000beafd00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc9000beafd00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3310
#2: ffffffff8fca5a50 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0x16a/0xd50 net/core/net_namespace.c:602
#3: ffffffff8fcb1f08 (rtnl_mutex){+.+.}-{4:4}, at: cleanup_net+0x6af/0xd50 net/core/net_namespace.c:638
#4: ffffffff8e93cff8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline]
#4: ffffffff8e93cff8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:976
4 locks held by syz-executor/13311:
#0: ffffffff8fca5a50 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:512
#1: ffffffff8fa27210 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x198/0x280 drivers/infiniband/core/device.c:1186
#2: ffffffff8fa273d0 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x1e6/0x280 drivers/infiniband/core/device.c:1191
#3: ffff888075df0f40 (&device->compat_devs_mutex){+.+.}-{4:4}, at: add_one_compat_dev+0x10d/0x710 drivers/infiniband/core/device.c:950
2 locks held by syz-executor/13316:
#0: ffffffff8fca5a50 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:512
#1: ffffffff8fcb1f08 (rtnl_mutex){+.+.}-{4:4}, at: setup_net+0x602/0x9e0 net/core/net_namespace.c:384
6 locks held by syz-executor/13320:
#0: ffffffff8fca5a50 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:512
#1: ffffffff8fa27210 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x198/0x280 drivers/infiniband/core/device.c:1186
#2: ffffffff8fa273d0 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x1e6/0x280 drivers/infiniband/core/device.c:1191
#3: ffff888030fe0f40 (&device->compat_devs_mutex){+.+.}-{4:4}, at: add_one_compat_dev+0x10d/0x710 drivers/infiniband/core/device.c:950
#4: ffff888030fe1238 (&rxe->usdev_lock){+.+.}-{4:4}, at: rxe_query_port+0x61/0x260 drivers/infiniband/sw/rxe/rxe_verbs.c:54
#5: ffffffff8fcb1f08 (rtnl_mutex){+.+.}-{4:4}, at: ib_get_eth_speed+0x153/0x800 drivers/infiniband/core/verbs.c:1995
6 locks held by syz-executor/13322:
#0: ffffffff8fca5a50 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:512
#1: ffffffff8fa27210 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x198/0x280 drivers/infiniband/core/device.c:1186
#2: ffffffff8fa273d0 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x1e6/0x280 drivers/infiniband/core/device.c:1191
#3: ffff888075df0f40 (&device->compat_devs_mutex){+.+.}-{4:4}, at: add_one_compat_dev+0x10d/0x710 drivers/infiniband/core/device.c:950
#4: ffff888075df1238 (&rxe->usdev_lock){+.+.}-{4:4}, at: rxe_query_port+0x61/0x260 drivers/infiniband/sw/rxe/rxe_verbs.c:54
#5: ffffffff8fcb1f08 (rtnl_mutex){+.+.}-{4:4}, at: ib_get_eth_speed+0x153/0x800 drivers/infiniband/core/verbs.c:1995
4 locks held by syz-executor/13360:
#0: ffffffff8fca5a50 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:512
#1: ffffffff8fa27210 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x198/0x280 drivers/infiniband/core/device.c:1186
#2: ffffffff8fa273d0 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x1e6/0x280 drivers/infiniband/core/device.c:1191
#3: ffff888075df0f40 (&device->compat_devs_mutex){+.+.}-{4:4}, at: add_one_compat_dev+0x10d/0x710 drivers/infiniband/core/device.c:950
4 locks held by syz-executor/13361:
#0: ffffffff8fca5a50 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:512
#1: ffffffff8fa27210 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x198/0x280 drivers/infiniband/core/device.c:1186
#2: ffffffff8fa273d0 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x1e6/0x280 drivers/infiniband/core/device.c:1191
#3: ffff888075df0f40 (&device->compat_devs_mutex){+.+.}-{4:4}, at: add_one_compat_dev+0x10d/0x710 drivers/infiniband/core/device.c:950
4 locks held by syz-executor/13362:
#0: ffffffff8fca5a50 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:512
#1: ffffffff8fa27210 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x198/0x280 drivers/infiniband/core/device.c:1186
#2: ffffffff8fa273d0 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x1e6/0x280 drivers/infiniband/core/device.c:1191
#3: ffff888075df0f40 (&device->compat_devs_mutex){+.+.}-{4:4}, at: add_one_compat_dev+0x10d/0x710 drivers/infiniband/core/device.c:950
4 locks held by syz-executor/13366:
#0: ffffffff8fca5a50 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:512
#1: ffffffff8fa27210 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x198/0x280 drivers/infiniband/core/device.c:1186
#2: ffffffff8fa273d0 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x1e6/0x280 drivers/infiniband/core/device.c:1191
#3: ffff888075df0f40 (&device->compat_devs_mutex){+.+.}-{4:4}, at: add_one_compat_dev+0x10d/0x710 drivers/infiniband/core/device.c:950
1 lock held by syz-executor/13375:
#0: ffffffff8fcb1f08 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:128 [inline]
#0: ffffffff8fcb1f08 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x47e/0x1bd0 net/ipv4/devinet.c:987
1 lock held by syz-executor/13377:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc2-syzkaller-00390-g9bc5c9515b48 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
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:234 [inline]
watchdog+0xff6/0x1040 kernel/hung_task.c:397
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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 12 Comm: kworker/u8:1 Not tainted 6.13.0-rc2-syzkaller-00390-g9bc5c9515b48 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
Workqueue: bat_events batadv_tt_purge
RIP: 0010:kasan_check_range+0x1b8/0x290 mm/kasan/generic.c:189
Code: 4d 01 fb 48 8d 5d 07 48 85 ed 48 0f 49 dd 48 83 e3 f8 48 29 dd 74 12 41 80 3b 00 0f 85 a6 00 00 00 49 ff c3 48 ff cd 75 ee 5b <41> 5c 41 5e 41 5f 5d c3 cc cc cc cc 40 84 ed 75 5f f7 c5 00 ff 00
RSP: 0018:ffffc90000a17f28 EFLAGS: 00000056
RAX: 0000000000000001 RBX: 0000000000000021 RCX: ffffffff817aa802
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff942b3880
RBP: 0000000000000000 R08: ffffffff942b3887 R09: 1ffffffff2856710
R10: dffffc0000000000 R11: fffffbfff2856711 R12: 0000000000000002
R13: ffff88801cace550 R14: dffffc0000000001 R15: fffffbfff2856711
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2175ddeff8 CR3: 000000007d664000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
hlock_class kernel/locking/lockdep.c:228 [inline]
check_wait_context kernel/locking/lockdep.c:4875 [inline]
__lock_acquire+0x8a2/0x2100 kernel/locking/lockdep.c:5176
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
backlog_lock_irq_save net/core/dev.c:233 [inline]
enqueue_to_backlog+0x17c/0xc80 net/core/dev.c:4880
netif_rx_internal+0x17a/0x630 net/core/dev.c:5201
__netif_rx+0x78/0xc0 net/core/dev.c:5221
loopback_xmit+0x454/0x6b0 drivers/net/loopback.c:89
__netdev_start_xmit include/linux/netdevice.h:5045 [inline]
netdev_start_xmit include/linux/netdevice.h:5054 [inline]
generic_xdp_tx+0x198/0x3b0 net/core/dev.c:5124
do_xdp_generic+0x952/0xd30 net/core/dev.c:5158
__netif_receive_skb_core+0x1ce9/0x4690 net/core/dev.c:5492
__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:6883
napi_poll net/core/dev.c:6952 [inline]
net_rx_action+0x89b/0x1240 net/core/dev.c:7074
handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
do_softirq+0x11b/0x1e0 kernel/softirq.c:462
__local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:389
spin_unlock_bh include/linux/spinlock.h:396 [inline]
batadv_tt_global_purge net/batman-adv/translation-table.c:2272 [inline]
batadv_tt_purge+0x4dd/0xa40 net/batman-adv/translation-table.c:3532
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
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