INFO: task syz-executor:9530 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-executor state:D stack:24408 pid:9530 tgid:9530 ppid:1 task_flags:0x400140 flags:0x00080003
Call Trace:
context_switch kernel/sched/core.c:5533 [inline]
__schedule+0x1259/0x6920 kernel/sched/core.c:7284
__schedule_loop kernel/sched/core.c:7361 [inline]
schedule+0xdd/0x2c0 kernel/sched/core.c:7376
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7433
rwsem_down_write_slowpath+0x4c2/0x12a0 kernel/locking/rwsem.c:1215
__down_write_common kernel/locking/rwsem.c:1347 [inline]
__down_write kernel/locking/rwsem.c:1356 [inline]
down_write+0x1c0/0x1f0 kernel/locking/rwsem.c:1632
rdma_dev_exit_net+0x174/0x6b0 drivers/infiniband/core/device.c:1156
ops_exit_list net/core/net_namespace.c:200 [inline]
ops_undo_list+0x2ee/0xab0 net/core/net_namespace.c:253
setup_net+0x1fa/0x3a0 net/core/net_namespace.c:459
copy_net_ns+0x345/0x7a0 net/core/net_namespace.c:582
create_new_namespaces+0x3ea/0xac0 kernel/nsproxy.c:132
unshare_nsproxy_namespaces+0xf2/0x220 kernel/nsproxy.c:234
ksys_unshare+0x4a2/0xb30 kernel/fork.c:3307
__do_sys_unshare kernel/fork.c:3375 [inline]
__se_sys_unshare kernel/fork.c:3373 [inline]
__x64_sys_unshare+0x31/0x40 kernel/fork.c:3373
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe3bf59f827
RSP: 002b:00007ffd4b956cc8 EFLAGS: 00000202 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007fe3bf825f40 RCX: 00007fe3bf59f827
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 00007fe3bf8267b8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000008
R13: 0000000000000003 R14: 00007ffd4b956f08 R15: 0000000000000000
Showing all locks held in the system:
locks held by khungtaskd/32: 1, last CPU#0:
#0: ffffffff8fdec620 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
#0: ffffffff8fdec620 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8fdec620 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x3d/0x184 kernel/locking/lockdep.c:6871
locks held by syslogd/4950: 1, last CPU#1:
#0: ffff88807ef585f0 (&u->iolock){+.+.}-{4:4}, at: __unix_dgram_recvmsg+0x255/0xc30 net/unix/af_unix.c:2587
locks held by getty/5361: 2, on CPU#0:
#0: ffff8880257d60a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wa
#0: ffff8880257d60a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900032432e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x419/0x14e0 drivers/tty/n_tty.c:2211
locks held by kworker/u9:2/5600: 3, on CPU#0:
#0: ffff888037f60140 ((wq_completion)hci7){+.+.}-{0:0}, at: process_one_work+0x1466/0x1b10 kernel/workqueue.c:3371
#1: ffffc90004027d08 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0xa2c/0x1b10 kernel/workqueue.c:3372
#2: ffff888055fb4ea0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x180/0x4c0 net/bluetooth/hci_sync.c:337
locks held by kworker/0:6/5738: 2, last CPU#0:
#0: ffff88801d059d40 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x1466/0x1b10 kernel/workqueue.c:3371
#1: ffffc90004ac7d08 ((work_completion)(&(&gc_work->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0xa2c/0x1b10 kernel/workqueue.c:3372
locks held by kworker/u8:20/6216: 3, last CPU#1:
#0: ffff88801d094140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x1466/0x1b10 kernel/workqueue.c:3371
#1: ffffc90006537d08 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work+0xa2c/0x1b10 kernel/workqueue.c:3372
#2: ffff8880247bb258 (&devlink->lock_key){+.+.}-{4:4}, at: nsim_dev_trap_report_work+0x56/0xd20 drivers/net/netdevsim/dev.c:834
locks held by kworker/u8:24/6227: 2, on CPU#0:
#0: ffff88801d094140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x1466/0x1b10 kernel/workqueue.c:3371
#1: ffffc90006267d08 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0xa2c/0x1b10 kernel/workqueue.c:3372
locks held by kworker/u8:29/6234: 4, on CPU#0:
#0: ffff88801e2e0940 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x1466/0x1b10 kernel/workqueue.c:3371
#1: ffffc90006e17d08 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0xa2c/0x1b10 kernel/workqueue.c:3372
#2: ffffffff91cbd488 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xb8/0x920 net/core/net_namespace.c:677
#3: ffffffff918e45e8 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_exit_net+0x174/0x6b0 drivers/infiniband/core/device.c:1156
locks held by kworker/u8:44/8414: 3, last CPU#1:
#0: ffff888035ddc140 ((wq_completion)bat_events){+.+.}-{0:0}, at: process_one_work+0x1466/0x1b10 kernel/workqueue.c:3371
#1: ffffc900038cfd08 ((work_completion)(&(&forw_packet_aggr->delayed_work)->work)){+.+.}-{0:0}, at: process_one_work+0xa2c/0x1b10 kernel/workqueue.c:3372
#2: ffff88807fba19c8 (&hard_iface->bat_iv.ogm_buff_mutex){+.+.}-{4:4}, at: batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:1010 [inline]
#2: ffff88807fba19c8 (&hard_iface->bat_iv.ogm_buff_mutex){+.+.}-{4:4}, at: batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:1005 [inline]
#2: ffff88807fba19c8 (&hard_iface->bat_iv.ogm_buff_mutex){+.+.}-{4:4}, at: batadv_iv_send_outstanding_bat_ogm_packet+0x50f/0x7d0 net/batman-adv/bat_iv_ogm.c:1924
locks held by kworker/u9:0/9389: 3, on CPU#1:
#0: ffff888037ad0140 ((wq_completion)hci5){+.+.}-{0:0}, at: process_one_work+0x1466/0x1b10 kernel/workqueue.c:3371
#1: ffffc90003be7d08 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0xa2c/0x1b10 kernel/workqueue.c:3372
#2: ffff888056890ea0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x180/0x4c0 net/bluetooth/hci_sync.c:337
locks held by syz-executor/9506: 2, on CPU#1:
#0: ffffffff91cbd488 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x323/0x7a0 net/core/net_namespace.c:578
#1: ffffffff918e45e8 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_exit_net+0x174/0x6b0 drivers/infiniband/core/device.c:1156
locks held by syz-executor/9530: 2, on CPU#1:
#0: ffffffff91cbd488 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x323/0x7a0 net/core/net_namespace.c:578
#1: ffffffff918e45e8 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_exit_net+0x174/0x6b0 drivers/infiniband/core/device.c:1156
locks held by syz-executor/9687: 5, last CPU#1:
#0: ffffffff91cbd488 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x323/0x7a0 net/core/net_namespace.c:578
#1: ffffffff918e4868 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x28c/0x590 drivers/infiniband/core/device.c:1221
#2: ffffffff918e45e8 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2ff/0x590 drivers/infiniband/core/device.c:1226
#3: ffff88802de79020 (&device->compat_devs_mutex){+.+.}-{4:4}, at: add_one_compat_dev+0x112/0x820 drivers/infiniband/core/device.c:976
#4: ffff88801e2c7180 (&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_add_one+0x38/0xaa0 fs/kernfs/dir.c:825
locks held by syz-executor/9699: 4, on CPU#0:
#0: ffffffff91cbd488 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x323/0x7a0 net/core/net_namespace.c:578
#1: ffffffff918e4868 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x28c/0x590 drivers/infiniband/core/device.c:1221
#2: ffffffff918e45e8 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2ff/0x590 drivers/infiniband/core/device.c:1226
#3: ffff88802de79020 (&device->compat_devs_mutex){+.+.}-{4:4}, at: add_one_compat_dev+0x112/0x820 drivers/infiniband/core/device.c:976
locks held by syz-executor/9736: 2, on CPU#0:
#0: ffffffff91cbd488 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x323/0x7a0 net/core/net_namespace.c:578
#1: ffffffff918e45e8
(rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_exit_net+0x174/0x6b0 drivers/infiniband/core/device.c:1156
locks held by syz-executor/9743: 5, last CPU#1:
#0: ffffffff91cbd488 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x323/0x7a0 net/core/net_namespace.c:578
#1: ffffffff91cd5fc0 (rtnl_mutex){+.+.}-{4:4}, at: ops_exit_rtnl_list net/core/net_namespace.c:173 [inline]
#1: ffffffff91cd5fc0 (rtnl_mutex){+.+.}-{4:4}, at: ops_undo_list+0x7ec/0xab0 net/core/net_namespace.c:249
#2: ffff88801e2c72a0 (&root->kernfs_supers_rwsem){++++}-{4:4}, at: kernfs_remove_by_name_ns+0x49/0x120 fs/kernfs/dir.c:1791
#3: ffff88801e2c7180 (&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_remove_by_name_ns+0x51/0x120 fs/kernfs/dir.c:1792
#4: ffffffff8fdec620 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
#4: ffffffff8fdec620 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#4: ffffffff8fdec620 (rcu_read_lock){....}-{1:3}, at: class_rcu_constructor include/linux/rcupdate.h:1216 [inline]
#4: ffffffff8fdec620 (rcu_read_lock){....}-{1:3}, at: unwind_next_frame+0xbd/0x2090 arch/x86/kernel/unwind_orc.c:495
locks held by syz-executor/9756: 2, on CPU#1:
#0: ffffffff91cbd488 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x323/0x7a0 net/core/net_namespace.c:578
#1: ffffffff918e45e8 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_exit_net+0x174/0x6b0 drivers/infiniband/core/device.c:1156
locks held by syz-executor/9787: 3, on CPU#0:
#0: ffffffff91cbd488 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x323/0x7a0 net/core/net_namespace.c:578
#1: ffffffff918e4868 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x28c/0x590 drivers/infiniband/core/device.c:1221
#2: ffffffff918e45e8 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2ff/0x590 drivers/infiniband/core/device.c:1226
locks held by syz-executor/9799: 3, on CPU#0:
#0: ffffffff91cbd488 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x323/0x7a0 net/core/net_namespace.c:578
#1: ffffffff918e4868 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x28c/0x590 drivers/infiniband/core/device.c:1221
#2: ffffffff918e45e8 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2ff/0x590 drivers/infiniband/core/device.c:1226
locks held by syz-executor/9826: 3, on CPU#0:
#0: ffffffff91cbd488 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x323/0x7a0 net/core/net_namespace.c:578
#1: ffffffff918e4868 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x28c/0x590 drivers/infiniband/core/device.c:1221
#2: ffffffff918e45e8 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2ff/0x590 drivers/infiniband/core/device.c:1226
locks held by syz-executor/9834: 3, on CPU#0:
#0: ffffffff91cbd488 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x323/0x7a0 net/core/net_namespace.c:578
#1: ffffffff918e4868 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x28c/0x590 drivers/infiniband/core/device.c:1221
#2: ffffffff918e45e8 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2ff/0x590 drivers/infiniband/core/device.c:1226
locks held by syz-executor/9851: 3, on CPU#1:
#0: ffffffff91cbd488 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x323/0x7a0 net/core/net_namespace.c:578
#1: ffffffff918e4868 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x28c/0x590 drivers/infiniband/core/device.c:1221
#2: ffffffff918e45e8 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2ff/0x590 drivers/infiniband/core/device.c:1226
locks held by syz-executor/9900: 3, on CPU#1:
#0: ffffffff91cbd488 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x323/0x7a0 net/core/net_namespace.c:578
#1: ffffffff918e4868 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x28c/0x590 drivers/infiniband/core/device.c:1221
#2: ffffffff918e45e8 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2ff/0x590 drivers/infiniband/core/device.c:1226
locks held by syz-executor/9911: 3, on CPU#1:
#0: ffffffff91cbd488 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x323/0x7a0 net/core/net_namespace.c:578
#1: ffffffff918e4868 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x28c/0x590 drivers/infiniband/core/device.c:1221
#2: ffffffff918e45e8 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2ff/0x590 drivers/infiniband/core/device.c:1226
locks held by syz-executor/9916: 3, on CPU#0:
#0: ffffffff91cbd488 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x323/0x7a0 net/core/net_namespace.c:578
#1: ffffffff918e4868 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x28c/0x590 drivers/infiniband/core/device.c:1221
#2: ffffffff918e45e8 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2ff/0x590 drivers/infiniband/core/device.c:1226
locks held by syz-executor/9922: 3, on CPU#1:
#0: ffffffff91cbd488 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x323/0x7a0 net/core/net_namespace.c:578
#1: ffffffff918e4868 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x28c/0x590 drivers/infiniband/core/device.c:1221
#2: ffffffff918e45e8 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2ff/0x590 drivers/infiniband/core/device.c:1226
locks held by syz-executor/9977: 3, on CPU#1:
#0: ffffffff91cbd488 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x323/0x7a0 net/core/net_namespace.c:578
#1: ffffffff918e4868 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x28c/0x590 drivers/infiniband/core/device.c:1221
#2: ffffffff918e45e8 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2ff/0x590 drivers/infiniband/core/device.c:1226
locks held by syz-executor/9992: 3, on CPU#1:
#0: ffffffff91cbd488 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x323/0x7a0 net/core/net_namespace.c:578
#1: ffffffff918e4868 (devices_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x28c/0x590 drivers/infiniband/core/device.c:1221
#2: ffffffff918e45e8 (rdma_nets_rwsem){++++}-{4:4}, at: rdma_dev_init_net+0x2ff/0x590 drivers/infiniband/core/device.c:1226
locks held by modprobe/10023: 2, last CPU#1:
#0: ffff88801f740340 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock include/linux/mmap_lock.h:544 [inline]
#0: ffff88801f740340 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x22c/0xa00 mm/mmap.c:1323
#1: ffffffff8fdec620 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
#1: ffffffff8fdec620 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#1: ffffffff8fdec620 (rcu_read_lock){....}-{1:3}, at: is_bpf_text_address+0x25/0x1a0 kernel/bpf/core.c:750
locks held by sed/10026: 2, last CPU#1:
#0: ffff88803825a800 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:562 [inline]
#0: ffff88803825a800 (&mm->mmap_lock){++++}-{4:4}, at: vm_brk_flags+0x210/0x620 mm/mmap.c:1238
#1: ffff88808f763070 (&anon_vma->rwsem){++++}-{4:4}, at: anon_vma_lock_read mm/internal.h:310 [inline]
#1: ffff88808f763070 (&anon_vma->rwsem){++++}-{4:4}, at: validate_mm+0x1f1/0x4e0 mm/vma.c:724
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 32 Comm: khungtaskd Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/05/2026
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
nmi_cpu_backtrace.cold+0x12d/0x151 lib/nmi_backtrace.c:123
nmi_trigger_cpumask_backtrace+0x21f/0x2a0 lib/nmi_backtrace.c:66
trigger_all_cpu_backtrace include/linux/nmi.h:164 [inline]
__sys_info lib/sys_info.c:157 [inline]
sys_info+0x141/0x190 lib/sys_info.c:165
check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline]
watchdog+0xcb1/0x1030 kernel/hung_task.c:561
kthread+0x373/0x450 kernel/kthread.c:436
ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: pr/ttyS0 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/05/2026
RIP: 0010:write_comp_data+0x90/0xa0 kernel/kcov.c:268
Code: 00 00 4a 8d 14 dd 28 00 00 00 48 39 d7 72 1b 48 83 c6 01 48 89 30 4c 89 44 10 e0 4c 89 4c 10 e8 4c 89 54 10 f0 4a 89 4c d8 20 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90
RSP: 0018:ffffc90000006d80 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 1ffff92000000db7 RCX: ffffffff820eed4f
RDX: 0000000000000506 RSI: 000000dcd7668e8b RDI: ffff888020ab0000
RBP: 0000000000000554 R08: 0000000000000006 R09: 000000dcd7668e8b
R10: 000000dcd7668e8b R11: 00000000000ad76d R12: ffffc90000006fb8
R13: ffff88801d095000 R14: ffff88807b042000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff888122946000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc74dfcd80 CR3: 00000000384ed000 CR4: 00000000003526f0
Call Trace:
check_buffer+0x31f/0x820 kernel/trace/ring_buffer.c:4784
__rb_reserve_next.constprop.0+0x486/0x1640 kernel/trace/ring_buffer.c:4875
rb_reserve_next_event kernel/trace/ring_buffer.c:5012 [inline]
ring_buffer_lock_reserve+0x49a/0x1220 kernel/trace/ring_buffer.c:5071
__trace_buffer_lock_reserve kernel/trace/trace.h:1677 [inline]
trace_event_buffer_lock_reserve+0x123/0x6f0 kernel/trace/trace.c:1935
trace_event_buffer_reserve+0x1f9/0x350 kernel/trace/trace_events.c:715
do_trace_event_raw_event_lock_acquire include/trace/events/lock.h:23 [inline]
trace_event_raw_event_lock_acquire+0x12c/0x330 include/trace/events/lock.h:23
__do_trace_lock_acquire include/trace/events/lock.h:23 [inline]
trace_lock_acquire include/trace/events/lock.h:23 [inline]
lock_acquire+0xe7/0x380 kernel/locking/lockdep.c:5905
rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
rcu_read_lock include/linux/rcupdate.h:849 [inline]
class_rcu_constructor include/linux/rcupdate.h:1216 [inline]
unwind_next_frame+0xd1/0x2090 arch/x86/kernel/unwind_orc.c:495
arch_stack_walk+0x94/0xf0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
kasan_save_track+0x14/0x30 mm/kasan/common.c:78
unpoison_slab_object mm/kasan/common.c:351 [inline]
__kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:377
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4683 [inline]
slab_alloc_node mm/slub.c:4996 [inline]
kmem_cache_alloc_lru_noprof+0x265/0x6a0 mm/slub.c:5029
xas_alloc+0x350/0x460 lib/xarray.c:378
xas_create+0x75a/0x14e0 lib/xarray.c:685
xas_store+0x9e/0x1a30 lib/xarray.c:795
__xa_store+0x16a/0x2c0 lib/xarray.c:1706
xa_store+0x34/0x50 lib/xarray.c:1737
hsr_get_seq_block+0x31a/0x510 net/hsr/hsr_framereg.c:361
hsr_check_duplicate.isra.0+0x7f/0x120 net/hsr/hsr_framereg.c:612
hsr_forward_do net/hsr/hsr_forward.c:572 [inline]
hsr_forward_skb+0xc13/0x2a30 net/hsr/hsr_forward.c:777
send_hsr_supervision_frame+0x696/0xbc0 net/hsr/hsr_device.c:364
hsr_announce+0x169/0x3e0 net/hsr/hsr_device.c:448
call_timer_fn+0x198/0x5f0 kernel/time/timer.c:1748
expire_timers kernel/time/timer.c:1799 [inline]
__run_timers+0x757/0xb00 kernel/time/timer.c:2374
__run_timer_base kernel/time/timer.c:2386 [inline]
__run_timer_base kernel/time/timer.c:2378 [inline]
run_timer_base+0x114/0x190 kernel/time/timer.c:2395
run_timer_softirq+0x1a/0x50 kernel/time/timer.c:2405
handle_softirqs+0x1e6/0x9d0 kernel/softirq.c:645
__do_softirq kernel/softirq.c:679 [inline]
invoke_softirq kernel/softirq.c:519 [inline]
__irq_exit_rcu+0x16a/0x210 kernel/softirq.c:758
irq_exit_rcu+0x9/0x30 kernel/softirq.c:775
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa3/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:211 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:221
Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 76 1a 10 f6 48 89 df e8 fe 70 10 f6 f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 01 00 00 00 e8 85 54 ff f5 65 48 83 3d f4 32 b6 09 00 74 16 5b
RSP: 0018:ffffc90000a77ca8 EFLAGS: 00000246
RAX: 0000000000000002 RBX: ffffffff9cc7e660 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff8e3e3b01 RDI: ffffffff8c625680
RBP: 0000000000000246 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 205d323354202020 R12: 1ffff9200014ef98
R13: ffffffff90bda1e0 R14: 0000000000000001 R15: 0000000000000000
nbcon_emit_one+0x15c/0x2b0 kernel/printk/nbcon.c:1165
nbcon_kthread_func+0x613/0x7d0 kernel/printk/nbcon.c:1271
kthread+0x373/0x450 kernel/kthread.c:436
ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245