INFO: task syz.7.1885:18347 blocked for more than 143 seconds. Not tainted 6.12.0-rc6-syzkaller-00318-ga9cda7c0ffed #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.7.1885 state:D stack:25392 pid:18347 tgid:18345 ppid:15661 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5328 [inline] __schedule+0x184f/0x4c30 kernel/sched/core.c:6690 __schedule_loop kernel/sched/core.c:6767 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6782 schedule_timeout+0xb0/0x310 kernel/time/timer.c:2591 do_wait_for_common kernel/sched/completion.c:95 [inline] __wait_for_common kernel/sched/completion.c:116 [inline] wait_for_common kernel/sched/completion.c:127 [inline] wait_for_completion+0x355/0x620 kernel/sched/completion.c:148 __flush_work+0xa37/0xc50 kernel/workqueue.c:4217 __cancel_work_sync+0xbc/0x110 kernel/workqueue.c:4337 htable_put+0x1e4/0x250 net/netfilter/xt_hashlimit.c:429 cleanup_match net/ipv6/netfilter/ip6_tables.c:477 [inline] cleanup_entry+0x20f/0x4c0 net/ipv6/netfilter/ip6_tables.c:661 translate_table+0x213c/0x2330 net/ipv6/netfilter/ip6_tables.c:744 do_replace net/ipv6/netfilter/ip6_tables.c:1154 [inline] do_ip6t_set_ctl+0xe4c/0x1270 net/ipv6/netfilter/ip6_tables.c:1644 nf_setsockopt+0x295/0x2c0 net/netfilter/nf_sockopt.c:101 rawv6_setsockopt+0x327/0x740 net/ipv6/raw.c:1054 do_sock_setsockopt+0x3af/0x720 net/socket.c:2334 __sys_setsockopt+0x1a2/0x250 net/socket.c:2357 __do_sys_setsockopt net/socket.c:2366 [inline] __se_sys_setsockopt net/socket.c:2363 [inline] __x64_sys_setsockopt+0xb5/0xd0 net/socket.c:2363 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: 0033:0x7fdd1e97e719 RSP: 002b:00007fdd1f7a1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007fdd1eb35f80 RCX: 00007fdd1e97e719 RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000004 RBP: 00007fdd1e9f139e R08: 0000000000000488 R09: 0000000000000000 R10: 0000000020000b00 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fdd1eb35f80 R15: 00007fdd1ec5fa28 Showing all locks held in the system: 1 lock held by kworker/R-rcu_g/4: #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool kernel/workqueue.c:2727 [inline] #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xaf5/0x10a0 kernel/workqueue.c:3526 2 locks held by kworker/0:1/9: 1 lock held by khungtaskd/30: #0: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #0: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6720 3 locks held by kworker/u8:3/36: #0: ffff88814d58d948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline] #0: ffff88814d58d948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310 #1: ffffc90000ac7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline] #1: ffffc90000ac7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310 #2: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4196 3 locks held by kworker/u8:5/769: 3 locks held by kworker/u8:7/2959: #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: ffffc9000bfafd00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline] #1: ffffc9000bfafd00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310 #2: ffffffff8fcc6e10 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:580 2 locks held by dhcpcd/5511: #0: ffffffff8fcb8408 (vlan_ioctl_mutex){+.+.}-{3:3}, at: sock_ioctl+0x661/0x8e0 net/socket.c:1308 #1: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: vlan_ioctl_handler+0x112/0x9d0 net/8021q/vlan.c:553 2 locks held by getty/5606: #0: ffff888034eea0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211 3 locks held by kworker/1:4/5889: #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/0x1850 kernel/workqueue.c:3310 #1: ffffc900041bfd00 (deferred_process_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline] #1: ffffc900041bfd00 (deferred_process_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310 #2: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104 2 locks held by kworker/0:4/5890: 2 locks held by kworker/0:5/5891: 2 locks held by kworker/0:8/5930: 1 lock held by kworker/R-wg-cr/15717: #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool kernel/workqueue.c:2727 [inline] #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xaf5/0x10a0 kernel/workqueue.c:3526 1 lock held by kworker/R-wg-cr/15718: #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool kernel/workqueue.c:2727 [inline] #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xaf5/0x10a0 kernel/workqueue.c:3526 1 lock held by kworker/R-wg-cr/15722: #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool kernel/workqueue.c:2727 [inline] #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xaf5/0x10a0 kernel/workqueue.c:3526 1 lock held by kworker/R-wg-cr/16601: #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool kernel/workqueue.c:2727 [inline] #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xaf5/0x10a0 kernel/workqueue.c:3526 1 lock held by kworker/R-wg-cr/16603: #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool kernel/workqueue.c:2727 [inline] #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xaf5/0x10a0 kernel/workqueue.c:3526 1 lock held by kworker/R-wg-cr/17929: #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool kernel/workqueue.c:2727 [inline] #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xaf5/0x10a0 kernel/workqueue.c:3526 1 lock held by kworker/R-wg-cr/17931: #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool kernel/workqueue.c:2727 [inline] #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xaf5/0x10a0 kernel/workqueue.c:3526 1 lock held by kworker/R-wg-cr/17933: 1 lock held by kworker/R-bond0/18071: #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3316 [inline] #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xfbf/0x10a0 kernel/workqueue.c:3535 1 lock held by kworker/R-wg-cr/18074: #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2669 1 lock held by kworker/R-wg-cr/18075: #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2669 1 lock held by kworker/R-wg-cr/18076: #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool kernel/workqueue.c:2727 [inline] #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xaf5/0x10a0 kernel/workqueue.c:3526 1 lock held by kworker/R-wg-cr/18157: #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool kernel/workqueue.c:2727 [inline] #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xaf5/0x10a0 kernel/workqueue.c:3526 1 lock held by kworker/R-wg-cr/18159: #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool kernel/workqueue.c:2727 [inline] #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xaf5/0x10a0 kernel/workqueue.c:3526 1 lock held by syz.0.1891/18402: #0: ffffffff8e93d200 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x4c/0x530 kernel/rcu/tree.c:4562 1 lock held by syz.3.1915/18743: #0: ffffffff8e93d338 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline] #0: ffffffff8e93d338 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:976 1 lock held by syz-executor/18775: #0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672 4 locks held by syz-executor/18778: #0: ffff8880306d8420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2931 [inline] #0: ffff8880306d8420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x225/0xd30 fs/read_write.c:679 #1: ffff888020ba4088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1ea/0x500 fs/kernfs/file.c:325 #2: ffff88802756a878 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20e/0x500 fs/kernfs/file.c:326 #3: ffffffff8f5717a8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xfc/0x480 drivers/net/netdevsim/bus.c:216 4 locks held by syz-executor/18781: #0: ffff8880306d8420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2931 [inline] #0: ffff8880306d8420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x225/0xd30 fs/read_write.c:679 #1: ffff88806ae56888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1ea/0x500 fs/kernfs/file.c:325 #2: ffff88802756a878 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20e/0x500 fs/kernfs/file.c:326 #3: ffffffff8f5717a8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xfc/0x480 drivers/net/netdevsim/bus.c:216 8 locks held by syz-executor/18784: #0: ffff8880306d8420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2931 [inline] #0: ffff8880306d8420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x225/0xd30 fs/read_write.c:679 #1: ffff8880275edc88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1ea/0x500 fs/kernfs/file.c:325 #2: ffff88802756a878 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20e/0x500 fs/kernfs/file.c:326 #3: ffffffff8f5717a8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xfc/0x480 drivers/net/netdevsim/bus.c:216 #4: ffff88814774f0e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline] #4: ffff88814774f0e8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline] #4: ffff88814774f0e8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xce/0x7c0 drivers/base/dd.c:1293 #5: ffff88814774d250 (&devlink->lock_key#23){+.+.}-{3:3}, at: nsim_drv_remove+0x50/0x160 drivers/net/netdevsim/dev.c:1675 #6: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: nsim_destroy+0x71/0x5c0 drivers/net/netdevsim/netdev.c:773 #7: ffffffff8e93d338 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline] #7: ffffffff8e93d338 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:976 4 locks held by syz-executor/18942: #0: ffff8880306d8420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2931 [inline] #0: ffff8880306d8420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x225/0xd30 fs/read_write.c:679 #1: ffff8880729cbc88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1ea/0x500 fs/kernfs/file.c:325 #2: ffff88802756a878 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20e/0x500 fs/kernfs/file.c:326 #3: ffffffff8f5717a8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xfc/0x480 drivers/net/netdevsim/bus.c:216 1 lock held by kworker/R-bond0/18966: #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3316 [inline] #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3443 1 lock held by kworker/R-bond0/18969: #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3316 [inline] #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3443 1 lock held by kworker/R-bond0/18971: #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3316 [inline] #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3443 1 lock held by kworker/R-bond0/18976: #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3316 [inline] #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3443 1 lock held by kworker/R-wg-cr/18986: #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3316 [inline] #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3443 1 lock held by kworker/R-bond0/18987: #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3316 [inline] #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3443 1 lock held by kworker/R-wg-cr/18989: #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3316 [inline] #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3443 1 lock held by kworker/R-wg-cr/18990: #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3316 [inline] #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3443 1 lock held by kworker/R-wg-cr/18992: #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3316 [inline] #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3443 1 lock held by kworker/R-wg-cr/18993: #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3316 [inline] #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3443 1 lock held by kworker/R-wg-cr/18994: #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3316 [inline] #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3443 1 lock held by kworker/R-wg-cr/18995: #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: set_pf_worker kernel/workqueue.c:3316 [inline] #0: ffffffff8e7e2368 (wq_pool_attach_mutex){+.+.}-{3:3}, at: rescuer_thread+0xd0/0x10a0 kernel/workqueue.c:3443 1 lock held by kworker/R-wg-cr/18996: #0: ffff8880b873ea98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598 2 locks held by syz-executor/19010: #0: ffffffff8fcc6e10 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:490 #1: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3885 2 locks held by syz-executor/19013: #0: ffffffff8fcc6e10 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:490 #1: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3885 2 locks held by syz-executor/19016: #0: ffffffff8fcc6e10 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:490 #1: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3885 2 locks held by syz-executor/19019: #0: ffffffff8fcc6e10 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:490 #1: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3885 ============================================= NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc6-syzkaller-00318-ga9cda7c0ffed #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 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: 5890 Comm: kworker/0:4 Not tainted 6.12.0-rc6-syzkaller-00318-ga9cda7c0ffed #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 Workqueue: events_power_efficient neigh_periodic_work RIP: 0010:kasan_check_range+0x9/0x290 mm/kasan/generic.c:188 Code: e1 ff 90 0f 0b 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 66 0f 1f 00 55 41 57 41 56 <41> 54 53 b0 01 48 85 f6 0f 84 a0 01 00 00 4c 8d 04 37 49 39 f8 0f RSP: 0018:ffffc90000006c50 EFLAGS: 00000246 RAX: ffffc900041cfa60 RBX: 0000000000000010 RCX: ffffffff8141632b RDX: 0000000000000001 RSI: 0000000000000010 RDI: ffffc90000006db0 RBP: ffffc90000006db0 R08: 0000000000000001 R09: ffffc90000006e50 R10: ffffc90000006db0 R11: ffffffff81809270 R12: ffffc900041c8000 R13: ffffc90000006d60 R14: 0000000000000000 R15: ffffc90000006db0 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3ac3f0b338 CR3: 000000000e734000 CR4: 00000000003526f0 DR0: 0000000000000002 DR1: 0000000000000000 DR2: 0000000000000003 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __asan_memset+0x23/0x50 mm/kasan/shadow.c:84 unwind_next_frame+0xcfb/0x22d0 arch/x86/kernel/unwind_orc.c:592 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:2342 [inline] slab_free mm/slub.c:4579 [inline] kfree+0x1a0/0x440 mm/slub.c:4727 skb_kfree_head net/core/skbuff.c:1086 [inline] skb_free_head net/core/skbuff.c:1098 [inline] skb_release_data+0x6a0/0x8a0 net/core/skbuff.c:1125 skb_release_all net/core/skbuff.c:1190 [inline] __kfree_skb net/core/skbuff.c:1204 [inline] consume_skb+0x9f/0xf0 net/core/skbuff.c:1436 nft_synproxy_do_eval+0x746/0xa60 net/netfilter/nft_synproxy.c:145 expr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline] nft_do_chain+0x4ad/0x1da0 net/netfilter/nf_tables_core.c:288 nft_do_chain_inet+0x418/0x6b0 net/netfilter/nft_chain_filter.c:161 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+0x29e/0x450 include/linux/netfilter.h:312 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314 __netif_receive_skb_one_core net/core/dev.c:5670 [inline] __netif_receive_skb+0x1ea/0x650 net/core/dev.c:5783 process_backlog+0x662/0x15b0 net/core/dev.c:6115 __napi_poll+0xcb/0x490 net/core/dev.c:6779 napi_poll net/core/dev.c:6848 [inline] net_rx_action+0x89b/0x1240 net/core/dev.c:6970 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554 do_softirq+0x11b/0x1e0 kernel/softirq.c:455 __local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:382 neigh_periodic_work+0xb35/0xd50 net/core/neighbour.c:1019 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xa63/0x1850 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