INFO: task syz-executor.1:22430 blocked for more than 143 seconds. Not tainted 6.5.0-rc3-syzkaller-00231-g3932f2272313 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:23824 pid:22430 ppid:1 flags:0x00000006 Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0xee1/0x59f0 kernel/sched/core.c:6710 schedule+0xe7/0x1b0 kernel/sched/core.c:6786 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x967/0x1340 kernel/locking/mutex.c:747 new_device_store+0x188/0x6a0 drivers/net/netdevsim/bus.c:160 bus_attr_store+0x76/0xa0 drivers/base/bus.c:170 sysfs_kf_write+0x117/0x170 fs/sysfs/file.c:136 kernfs_fop_write_iter+0x3ff/0x610 fs/kernfs/file.c:334 call_write_iter include/linux/fs.h:1871 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x650/0xe40 fs/read_write.c:584 ksys_write+0x12f/0x250 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f5996c7b82f RSP: 002b:00007fff7c4372f0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f5996c7b82f RDX: 0000000000000003 RSI: 00007fff7c437340 RDI: 0000000000000005 RBP: 00007f5996cc8045 R08: 0000000000000000 R09: 00007fff7c437147 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 00007fff7c437340 R14: 00007f59978c4620 R15: 0000000000000003 INFO: task syz-executor.2:22434 blocked for more than 143 seconds. Not tainted 6.5.0-rc3-syzkaller-00231-g3932f2272313 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:24912 pid:22434 ppid:1 flags:0x00000006 Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0xee1/0x59f0 kernel/sched/core.c:6710 schedule+0xe7/0x1b0 kernel/sched/core.c:6786 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x967/0x1340 kernel/locking/mutex.c:747 del_device_store+0xd2/0x4b0 drivers/net/netdevsim/bus.c:209 bus_attr_store+0x76/0xa0 drivers/base/bus.c:170 sysfs_kf_write+0x117/0x170 fs/sysfs/file.c:136 kernfs_fop_write_iter+0x3ff/0x610 fs/kernfs/file.c:334 call_write_iter include/linux/fs.h:1871 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x650/0xe40 fs/read_write.c:584 ksys_write+0x12f/0x250 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7ff2c2e7b82f RSP: 002b:00007fffbaf0c190 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007ff2c2e7b82f RDX: 0000000000000001 RSI: 00007fffbaf0c1e0 RDI: 0000000000000005 RBP: 00007ff2c2ec8021 R08: 0000000000000000 R09: 00007fffbaf0bfe7 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000001 R13: 00007fffbaf0c1e0 R14: 00007ff2c3ac4620 R15: 0000000000000003 INFO: task syz-executor.3:22435 blocked for more than 144 seconds. Not tainted 6.5.0-rc3-syzkaller-00231-g3932f2272313 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:24704 pid:22435 ppid:1 flags:0x00000006 Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0xee1/0x59f0 kernel/sched/core.c:6710 schedule+0xe7/0x1b0 kernel/sched/core.c:6786 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x967/0x1340 kernel/locking/mutex.c:747 del_device_store+0xd2/0x4b0 drivers/net/netdevsim/bus.c:209 bus_attr_store+0x76/0xa0 drivers/base/bus.c:170 sysfs_kf_write+0x117/0x170 fs/sysfs/file.c:136 kernfs_fop_write_iter+0x3ff/0x610 fs/kernfs/file.c:334 call_write_iter include/linux/fs.h:1871 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x650/0xe40 fs/read_write.c:584 ksys_write+0x12f/0x250 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f1246c7b82f RSP: 002b:00007ffc6094f370 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f1246c7b82f RDX: 0000000000000001 RSI: 00007ffc6094f3c0 RDI: 0000000000000005 RBP: 00007f1246cc8021 R08: 0000000000000000 R09: 00007ffc6094f1c7 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000001 R13: 00007ffc6094f3c0 R14: 00007f12478c4620 R15: 0000000000000003 INFO: task syz-executor.0:22445 blocked for more than 145 seconds. Not tainted 6.5.0-rc3-syzkaller-00231-g3932f2272313 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:24912 pid:22445 ppid:1 flags:0x00000006 Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0xee1/0x59f0 kernel/sched/core.c:6710 schedule+0xe7/0x1b0 kernel/sched/core.c:6786 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6845 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x967/0x1340 kernel/locking/mutex.c:747 del_device_store+0xd2/0x4b0 drivers/net/netdevsim/bus.c:209 bus_attr_store+0x76/0xa0 drivers/base/bus.c:170 sysfs_kf_write+0x117/0x170 fs/sysfs/file.c:136 kernfs_fop_write_iter+0x3ff/0x610 fs/kernfs/file.c:334 call_write_iter include/linux/fs.h:1871 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x650/0xe40 fs/read_write.c:584 ksys_write+0x12f/0x250 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f771667b82f RSP: 002b:00007ffef1c70fb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f771667b82f RDX: 0000000000000001 RSI: 00007ffef1c71000 RDI: 0000000000000005 RBP: 00007f77166c8021 R08: 0000000000000000 R09: 00007ffef1c70e07 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000001 R13: 00007ffef1c71000 R14: 00007f77172c4620 R15: 0000000000000003 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/13: #0: ffffffff8c9a5970 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x2c/0xe20 kernel/rcu/tasks.h:522 1 lock held by rcu_tasks_trace/14: #0: ffffffff8c9a5670 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x2c/0xe20 kernel/rcu/tasks.h:522 3 locks held by kworker/1:1/26: #0: ffff8880284a7d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline] #0: ffff8880284a7d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline] #0: ffff8880284a7d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline] #0: ffff8880284a7d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline] #0: ffff8880284a7d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:675 [inline] #0: ffff8880284a7d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:702 [inline] #0: ffff8880284a7d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x96a/0x16f0 kernel/workqueue.c:2567 #1: ffffc90000a1fd80 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x99e/0x16f0 kernel/workqueue.c:2571 #2: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x12/0x30 net/ipv6/addrconf.c:4635 1 lock held by khungtaskd/28: #0: ffffffff8c9a6580 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6615 1 lock held by dhcpcd/4694: #0: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x1d3/0x1f00 net/ipv4/devinet.c:1074 2 locks held by getty/4786: #0: ffff88814abbc098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243 #1: ffffc900015c02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfcb/0x1480 drivers/tty/n_tty.c:2187 3 locks held by kworker/u4:10/23761: #0: ffff8881400f7938 ((wq_completion)ib-unreg-wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline] #0: ffff8881400f7938 ((wq_completion)ib-unreg-wq){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline] #0: ffff8881400f7938 ((wq_completion)ib-unreg-wq){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline] #0: ffff8881400f7938 ((wq_completion)ib-unreg-wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline] #0: ffff8881400f7938 ((wq_completion)ib-unreg-wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:675 [inline] #0: ffff8881400f7938 ((wq_completion)ib-unreg-wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:702 [inline] #0: ffff8881400f7938 ((wq_completion)ib-unreg-wq){+.+.}-{0:0}, at: process_one_work+0x96a/0x16f0 kernel/workqueue.c:2567 #1: ffffc90015437d80 ((work_completion)(&device->unregistration_work)){+.+.}-{0:0}, at: process_one_work+0x99e/0x16f0 kernel/workqueue.c:2571 #2: ffff88807f310690 (&device->unregistration_lock){+.+.}-{3:3}, at: __ib_unregister_device+0x24/0x190 drivers/infiniband/core/device.c:1471 3 locks held by kworker/0:5/9308: #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:675 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:702 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x96a/0x16f0 kernel/workqueue.c:2567 #1: ffffc9000a45fd80 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x99e/0x16f0 kernel/workqueue.c:2571 #2: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0x51/0xc0 net/core/link_watch.c:277 5 locks held by kworker/u4:1/10048: #0: ffff888014667938 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline] #0: ffff888014667938 ((wq_completion)netns){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline] #0: ffff888014667938 ((wq_completion)netns){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline] #0: ffff888014667938 ((wq_completion)netns){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline] #0: ffff888014667938 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:675 [inline] #0: ffff888014667938 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:702 [inline] #0: ffff888014667938 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x96a/0x16f0 kernel/workqueue.c:2567 #1: ffffc9000375fd80 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x99e/0x16f0 kernel/workqueue.c:2571 #2: ffffffff8e3ca650 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x9f/0xb20 net/core/net_namespace.c:576 #3: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: default_device_exit_batch+0x93/0x740 net/core/dev.c:11345 #4: ffffffff8c9b1a38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline] #4: ffffffff8c9b1a38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x69e/0x7e0 kernel/rcu/tree_exp.h:992 3 locks held by kworker/u4:3/18146: 1 lock held by syz-executor.4/22362: #0: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: netdev_wait_allrefs_any net/core/dev.c:10229 [inline] #0: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: netdev_run_todo+0xd09/0x11d0 net/core/dev.c:10347 3 locks held by kworker/1:8/22393: #0: ffff888140a82d38 ((wq_completion)infiniband){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline] #0: ffff888140a82d38 ((wq_completion)infiniband){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline] #0: ffff888140a82d38 ((wq_completion)infiniband){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline] #0: ffff888140a82d38 ((wq_completion)infiniband){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline] #0: ffff888140a82d38 ((wq_completion)infiniband){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:675 [inline] #0: ffff888140a82d38 ((wq_completion)infiniband){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:702 [inline] #0: ffff888140a82d38 ((wq_completion)infiniband){+.+.}-{0:0}, at: process_one_work+0x96a/0x16f0 kernel/workqueue.c:2567 #1: ffffc900161cfd80 ((work_completion)(&work->work)#3){+.+.}-{0:0}, at: process_one_work+0x99e/0x16f0 kernel/workqueue.c:2571 #2: ffff88802c621148 (&rxe->usdev_lock){+.+.}-{3:3}, at: rxe_query_port+0x5d/0x1f0 drivers/infiniband/sw/rxe/rxe_verbs.c:54 2 locks held by kworker/1:10/22395: 3 locks held by kworker/1:12/22397: #0: ffff888140a82d38 ((wq_completion)infiniband){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline] #0: ffff888140a82d38 ((wq_completion)infiniband){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline] #0: ffff888140a82d38 ((wq_completion)infiniband){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline] #0: ffff888140a82d38 ((wq_completion)infiniband){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline] #0: ffff888140a82d38 ((wq_completion)infiniband){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:675 [inline] #0: ffff888140a82d38 ((wq_completion)infiniband){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:702 [inline] #0: ffff888140a82d38 ((wq_completion)infiniband){+.+.}-{0:0}, at: process_one_work+0x96a/0x16f0 kernel/workqueue.c:2567 #1: ffffc9001620fd80 ((work_completion)(&work->work)#3){+.+.}-{0:0}, at: process_one_work+0x99e/0x16f0 kernel/workqueue.c:2571 #2: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: ib_get_eth_speed+0x114/0x640 drivers/infiniband/core/verbs.c:1897 4 locks held by kworker/0:8/22399: #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:675 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:702 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x96a/0x16f0 kernel/workqueue.c:2567 #1: ffffc9001610fd80 ((work_completion)(&smcibdev->port_event_work)){+.+.}-{0:0}, at: process_one_work+0x99e/0x16f0 kernel/workqueue.c:2571 #2: ffff88802c621148 (&rxe->usdev_lock){+.+.}-{3:3}, at: rxe_query_port+0x5d/0x1f0 drivers/infiniband/sw/rxe/rxe_verbs.c:54 #3: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: ib_get_eth_speed+0x114/0x640 drivers/infiniband/core/verbs.c:1897 3 locks held by kworker/0:9/22400: #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:675 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:702 [inline] #0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x96a/0x16f0 kernel/workqueue.c:2567 #1: ffffc9001616fd80 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x99e/0x16f0 kernel/workqueue.c:2571 #2: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:75 3 locks held by kworker/0:12/22403: #0: ffff8880284a7d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline] #0: ffff8880284a7d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline] #0: ffff8880284a7d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline] #0: ffff8880284a7d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline] #0: ffff8880284a7d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:675 [inline] #0: ffff8880284a7d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:702 [inline] #0: ffff8880284a7d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x96a/0x16f0 kernel/workqueue.c:2567 #1: ffffc9001622fd80 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x99e/0x16f0 kernel/workqueue.c:2571 #2: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x12/0x30 net/ipv6/addrconf.c:4635 2 locks held by kworker/1:19/22414: #0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline] #0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline] #0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline] #0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline] #0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:675 [inline] #0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:702 [inline] #0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x96a/0x16f0 kernel/workqueue.c:2567 #1: ffffc900162dfd80 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x99e/0x16f0 kernel/workqueue.c:2571 5 locks held by syz-executor.1/22430: #0: ffff888046ce0fc8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x99/0xb0 fs/file.c:1046 #1: ffff8880288a0410 (sb_writers#8){.+.+}-{0:0}, at: ksys_write+0x12f/0x250 fs/read_write.c:637 #2: ffff8880843b2c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x281/0x610 fs/kernfs/file.c:325 #3: ffff8881427f9918 (kn->active#52){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a4/0x610 fs/kernfs/file.c:326 #4: ffffffff8da8dac8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: new_device_store+0x188/0x6a0 drivers/net/netdevsim/bus.c:160 5 locks held by syz-executor.2/22434: #0: ffff88807a884ac8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x99/0xb0 fs/file.c:1046 #1: ffff8880288a0410 (sb_writers#8){.+.+}-{0:0}, at: ksys_write+0x12f/0x250 fs/read_write.c:637 #2: ffff8880817bac88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x281/0x610 fs/kernfs/file.c:325 #3: ffff8881427f9a00 (kn->active#51){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a4/0x610 fs/kernfs/file.c:326 #4: ffffffff8da8dac8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd2/0x4b0 drivers/net/netdevsim/bus.c:209 5 locks held by syz-executor.3/22435: #0: ffff88809388afc8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x99/0xb0 fs/file.c:1046 #1: ffff8880288a0410 (sb_writers#8){.+.+}-{0:0}, at: ksys_write+0x12f/0x250 fs/read_write.c:637 #2: ffff888035a33488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x281/0x610 fs/kernfs/file.c:325 #3: ffff8881427f9a00 (kn->active#51){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a4/0x610 fs/kernfs/file.c:326 #4: ffffffff8da8dac8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd2/0x4b0 drivers/net/netdevsim/bus.c:209 1 lock held by syz-executor.4/22436: #0: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:697 [inline] #0: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3e/0x240 drivers/net/tun.c:3491 8 locks held by syz-executor.5/22444: #0: ffff88807f67cac8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x99/0xb0 fs/file.c:1046 #1: ffff8880288a0410 (sb_writers#8){.+.+}-{0:0}, at: ksys_write+0x12f/0x250 fs/read_write.c:637 #2: ffff88803882e488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x281/0x610 fs/kernfs/file.c:325 #3: ffff8881427f9a00 (kn->active#51){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a4/0x610 fs/kernfs/file.c:326 #4: ffffffff8da8dac8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd2/0x4b0 drivers/net/netdevsim/bus.c:209 #5: ffff88802c7500e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:958 [inline] #5: ffff88802c7500e8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1093 [inline] #5: ffff88802c7500e8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1290 #6: ffff88802c751250 (&devlink->lock_key#6){+.+.}-{3:3}, at: nsim_drv_remove+0x4a/0x1d0 drivers/net/netdevsim/dev.c:1672 #7: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: nsim_destroy+0x39/0x190 drivers/net/netdevsim/netdev.c:374 5 locks held by syz-executor.0/22445: #0: ffff8880a1cffc48 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x99/0xb0 fs/file.c:1046 #1: ffff8880288a0410 (sb_writers#8){.+.+}-{0:0}, at: ksys_write+0x12f/0x250 fs/read_write.c:637 #2: ffff88809cf3ec88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x281/0x610 fs/kernfs/file.c:325 #3: ffff8881427f9a00 (kn->active#51){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a4/0x610 fs/kernfs/file.c:326 #4: ffffffff8da8dac8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xd2/0x4b0 drivers/net/netdevsim/bus.c:209 1 lock held by syz-executor.4/22667: #0: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e2/0xd30 net/core/rtnetlink.c:6425 1 lock held by syz-executor.2/22675: #0: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e2/0xd30 net/core/rtnetlink.c:6425 1 lock held by syz-executor.3/22677: #0: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e2/0xd30 net/core/rtnetlink.c:6425 1 lock held by syz-executor.1/22680: #0: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e2/0xd30 net/core/rtnetlink.c:6425 1 lock held by syz-executor.5/22682: #0: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e2/0xd30 net/core/rtnetlink.c:6425 1 lock held by syz-executor.0/22684: #0: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e2/0xd30 net/core/rtnetlink.c:6425 1 lock held by syz-executor.4/22689: #0: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e2/0xd30 net/core/rtnetlink.c:6425 1 lock held by syz-executor.3/22693: #0: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e2/0xd30 net/core/rtnetlink.c:6425 1 lock held by syz-executor.2/22699: #0: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e2/0xd30 net/core/rtnetlink.c:6425 1 lock held by syz-executor.5/22701: #0: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e2/0xd30 net/core/rtnetlink.c:6425 1 lock held by syz-executor.1/22702: #0: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e2/0xd30 net/core/rtnetlink.c:6425 1 lock held by syz-executor.0/22703: #0: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:78 [inline] #0: ffffffff8e3df628 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e2/0xd30 net/core/rtnetlink.c:6425 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.5.0-rc3-syzkaller-00231-g3932f2272313 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x277/0x380 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x2ac/0x310 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] watchdog+0xf29/0x11b0 kernel/hung_task.c:379 kthread+0x33a/0x430 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:296 RIP: 0000:0x0 Code: Unable to access opcode bytes at 0xffffffffffffffd6. RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 5031 Comm: syz-fuzzer Not tainted 6.5.0-rc3-syzkaller-00231-g3932f2272313 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 RIP: 0010:get_page_from_freelist+0x19c/0x31e0 mm/page_alloc.c:3153 Code: df 4c 89 5c 24 18 e8 13 31 e7 ff 4c 8b 5c 24 18 88 84 24 93 00 00 00 80 bc 24 93 00 00 00 00 48 89 5c 24 48 0f 84 ea 06 00 00 <8b> 74 24 58 85 f6 0f 84 82 00 00 00 83 3d 95 93 dc 0c 01 76 79 48 RSP: 0000:ffffc90003bdf9f0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff8880157eb0a8 RCX: ffffffff81be5e8a RDX: ffffed1002afd616 RSI: 0000000000000008 RDI: ffff8880157eb0a8 RBP: ffff88813fffc310 R08: 0000000000000000 R09: ffffed1002afd615 R10: ffff8880157eb0af R11: ffff88813fffa700 R12: 0000000000000001 R13: ffff88813fffae20 R14: ffffc90003bdfbb8 R15: dffffc0000000000 FS: 000000c000bfe090(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c001b1c000 CR3: 00000000207a0000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __alloc_pages+0x1d0/0x4a0 mm/page_alloc.c:4477 __folio_alloc+0x16/0x40 mm/page_alloc.c:4509 vma_alloc_folio+0x156/0x890 mm/mempolicy.c:2240 do_anonymous_page mm/memory.c:4104 [inline] do_pte_missing mm/memory.c:3662 [inline] handle_pte_fault mm/memory.c:4939 [inline] __handle_mm_fault+0x12a8/0x3b80 mm/memory.c:5079 handle_mm_fault+0x2ab/0x9d0 mm/memory.c:5233 do_user_addr_fault+0x2e7/0xfc0 arch/x86/mm/fault.c:1343 handle_page_fault arch/x86/mm/fault.c:1486 [inline] exc_page_fault+0x5c/0xd0 arch/x86/mm/fault.c:1542 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0033:0x46a4d9 Code: fe 7f 44 1f 80 c5 f8 77 c3 80 3d 04 ef b7 01 01 75 0d c5 f9 ef c0 48 81 fb 00 00 00 02 73 13 48 89 d9 48 c1 e9 03 48 83 e3 07 48 ab e9 65 fe ff ff c5 fe 7f 07 48 89 fe 48 83 c7 20 48 83 e7 RSP: 002b:000000c00568de90 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000800 RDX: 0000000000000001 RSI: 0000000000040000 RDI: 000000c001b1c000 RBP: 000000c00568deb8 R08: 00007fe915225320 R09: 0000000000020000 R10: 000000c001b00000 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000040 R14: 000000c00bfcbba0 R15: 000000c000bfe000