INFO: task udevd:2970 blocked for more than 143 seconds. Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:23704 pid:2970 ppid:1 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x8fc/0xda0 kernel/sched/core.c:6503 schedule+0xcb/0x190 kernel/sched/core.c:6579 rwsem_down_read_slowpath+0x5fe/0x950 kernel/locking/rwsem.c:1095 __down_read_common+0x54/0x2a0 kernel/locking/rwsem.c:1260 kernfs_fop_readdir+0x577/0x870 fs/kernfs/dir.c:1810 iterate_dir+0x257/0x5f0 __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64+0x1e9/0x4b0 fs/readdir.c:354 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f32b18ff097 RSP: 002b:00007ffd6b88ea28 EFLAGS: 00000293 ORIG_RAX: 00000000000000d9 RAX: ffffffffffffffda RBX: 000055f5cb464f00 RCX: 00007f32b18ff097 RDX: 0000000000008000 RSI: 000055f5cb464f30 RDI: 000000000000000c RBP: 000055f5cb464f30 R08: 0000000000000030 R09: 00007f32b19f5a60 R10: 0000000000000010 R11: 0000000000000293 R12: fffffffffffffe68 R13: 000055f5cb464f04 R14: 0000000000000016 R15: 0000000000000000 INFO: task kworker/u4:8:4227 blocked for more than 143 seconds. Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:8 state:D stack:24088 pid:4227 ppid:2 flags:0x00004000 Workqueue: netns cleanup_net Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x8fc/0xda0 kernel/sched/core.c:6503 schedule+0xcb/0x190 kernel/sched/core.c:6579 rwsem_down_read_slowpath+0x5fe/0x950 kernel/locking/rwsem.c:1095 __down_read_common+0x54/0x2a0 kernel/locking/rwsem.c:1260 kernfs_find_and_get_ns+0x6d/0x100 fs/kernfs/dir.c:873 kernfs_find_and_get include/linux/kernfs.h:597 [inline] sysfs_unmerge_group+0x5e/0x130 fs/sysfs/group.c:365 rpm_sysfs_remove drivers/base/power/sysfs.c:826 [inline] dpm_sysfs_remove+0x65/0xb0 drivers/base/power/sysfs.c:835 device_del+0x2ed/0xbe0 drivers/base/core.c:3681 unregister_netdevice_many+0x14aa/0x1a30 net/core/dev.c:10874 ip_tunnel_delete_nets+0x325/0x370 net/ipv4/ip_tunnel.c:1126 ops_exit_list net/core/net_namespace.c:174 [inline] cleanup_net+0x80c/0xc50 net/core/net_namespace.c:601 process_one_work+0x81c/0xd10 kernel/workqueue.c:2289 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 INFO: task kworker/0:28:11833 blocked for more than 143 seconds. Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:28 state:D stack:26840 pid:11833 ppid:2 flags:0x00004000 Workqueue: ipv6_addrconf addrconf_verify_work Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x8fc/0xda0 kernel/sched/core.c:6503 schedule+0xcb/0x190 kernel/sched/core.c:6579 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6638 __mutex_lock_common+0xecf/0x26c0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799 addrconf_verify_work+0x15/0x30 net/ipv6/addrconf.c:4624 process_one_work+0x81c/0xd10 kernel/workqueue.c:2289 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 INFO: task syz-executor.5:13090 blocked for more than 144 seconds. Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:26904 pid:13090 ppid:3642 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x8fc/0xda0 kernel/sched/core.c:6503 schedule+0xcb/0x190 kernel/sched/core.c:6579 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6638 __mutex_lock_common+0xecf/0x26c0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799 rtnl_lock net/core/rtnetlink.c:74 [inline] rtnetlink_rcv_msg+0x75d/0xe90 net/core/rtnetlink.c:6088 netlink_rcv_skb+0x1f0/0x460 net/netlink/af_netlink.c:2540 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x7e7/0x9c0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x9b3/0xcd0 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x597/0x8e0 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x28e/0x390 net/socket.c:2565 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f03aec8b5a9 RSP: 002b:00007f03af965168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f03aedac050 RCX: 00007f03aec8b5a9 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000005 RBP: 00007f03aece67b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffef452f67f R14: 00007f03af965300 R15: 0000000000022000 INFO: task syz-executor.5:13098 blocked for more than 144 seconds. Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:28056 pid:13098 ppid:3642 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x8fc/0xda0 kernel/sched/core.c:6503 schedule+0xcb/0x190 kernel/sched/core.c:6579 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6638 __mutex_lock_common+0xecf/0x26c0 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799 rtnl_lock net/core/rtnetlink.c:74 [inline] rtnetlink_rcv_msg+0x75d/0xe90 net/core/rtnetlink.c:6088 netlink_rcv_skb+0x1f0/0x460 net/netlink/af_netlink.c:2540 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x7e7/0x9c0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x9b3/0xcd0 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] ____sys_sendmsg+0x597/0x8e0 net/socket.c:2482 ___sys_sendmsg net/socket.c:2536 [inline] __sys_sendmsg+0x28e/0x390 net/socket.c:2565 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f03aec8b5a9 RSP: 002b:00007f03af944168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f03aedac120 RCX: 00007f03aec8b5a9 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000006 RBP: 00007f03aece67b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffef452f67f R14: 00007f03af944300 R15: 0000000000022000 INFO: task modprobe:13089 blocked for more than 144 seconds. Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:modprobe state:D stack:25880 pid:13089 ppid:4048 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x8fc/0xda0 kernel/sched/core.c:6503 schedule+0xcb/0x190 kernel/sched/core.c:6579 rwsem_down_read_slowpath+0x5fe/0x950 kernel/locking/rwsem.c:1095 __down_read_common+0x54/0x2a0 kernel/locking/rwsem.c:1260 kernfs_iop_permission+0xa9/0x360 fs/kernfs/inode.c:290 do_inode_permission fs/namei.c:458 [inline] inode_permission+0x22c/0x450 fs/namei.c:525 may_lookup fs/namei.c:1715 [inline] link_path_walk+0x2ef/0xf00 fs/namei.c:2262 path_lookupat+0xab/0x450 fs/namei.c:2473 filename_lookup+0x285/0x660 fs/namei.c:2503 user_path_at_empty+0x40/0x1a0 fs/namei.c:2876 user_path_at include/linux/namei.h:57 [inline] user_statfs fs/statfs.c:103 [inline] __do_sys_statfs fs/statfs.c:195 [inline] __se_sys_statfs+0xe6/0x220 fs/statfs.c:192 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f586bc202a7 RSP: 002b:00007ffd72b21498 EFLAGS: 00000246 ORIG_RAX: 0000000000000089 RAX: ffffffffffffffda RBX: 00007f586bb1d4f8 RCX: 00007f586bc202a7 RDX: 00007f586bb1f17c RSI: 00007ffd72b21520 RDI: 00007f586bb15723 RBP: 00007f586bb15723 R08: 0000000000007fff R09: 0000000000000000 R10: 00007ffd72b21530 R11: 0000000000000246 R12: 00007ffd72b21520 R13: 00007ffd72b216b0 R14: 00007f586bb1d4f8 R15: 0000000000000000 INFO: task syz-executor.0:13105 blocked for more than 145 seconds. Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:26392 pid:13105 ppid:3781 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x8fc/0xda0 kernel/sched/core.c:6503 schedule+0xcb/0x190 kernel/sched/core.c:6579 rwsem_down_write_slowpath+0xfdc/0x14a0 kernel/locking/rwsem.c:1190 __down_write_common kernel/locking/rwsem.c:1305 [inline] __down_write kernel/locking/rwsem.c:1314 [inline] down_write+0x231/0x270 kernel/locking/rwsem.c:1563 kernfs_add_one+0x94/0x560 fs/kernfs/dir.c:738 kernfs_create_dir_ns+0x1bf/0x220 fs/kernfs/dir.c:1021 sysfs_create_dir_ns+0x181/0x390 fs/sysfs/dir.c:59 create_dir lib/kobject.c:63 [inline] kobject_add_internal+0x6dd/0xd10 lib/kobject.c:223 kobject_add_varg lib/kobject.c:358 [inline] kobject_init_and_add+0x123/0x190 lib/kobject.c:441 nfs_netns_client_alloc fs/nfs/sysfs.c:163 [inline] nfs_netns_sysfs_setup+0xcb/0x150 fs/nfs/sysfs.c:175 nfs_net_init+0x11/0x20 fs/nfs/inode.c:2338 ops_init+0x353/0x5d0 net/core/net_namespace.c:135 setup_net+0x4bb/0xc10 net/core/net_namespace.c:332 copy_net_ns+0x359/0x5b0 net/core/net_namespace.c:478 create_new_namespaces+0x4db/0x8e0 kernel/nsproxy.c:110 copy_namespaces+0x333/0x390 kernel/nsproxy.c:178 copy_process+0x1a55/0x3fc0 kernel/fork.c:2256 kernel_clone+0x227/0x640 kernel/fork.c:2671 __do_sys_clone3 kernel/fork.c:2970 [inline] __se_sys_clone3+0x372/0x410 kernel/fork.c:2954 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f6b5268b5a9 RSP: 002b:00007f6b5330f038 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f6b527ac050 RCX: 00007f6b5268b5a9 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00007f6b5330f050 RBP: 00007f6b526e67b0 R08: 0000000000000000 R09: 0000000000000058 R10: 00007f6b5330f050 R11: 0000000000000246 R12: 0000000000000058 R13: 00007fff0d3f1dcf R14: 00007f6b5330f300 R15: 0000000000022000 INFO: task syz-executor.4:13104 blocked for more than 145 seconds. Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:26392 pid:13104 ppid:3643 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x8fc/0xda0 kernel/sched/core.c:6503 schedule+0xcb/0x190 kernel/sched/core.c:6579 rwsem_down_write_slowpath+0xfdc/0x14a0 kernel/locking/rwsem.c:1190 __down_write_common kernel/locking/rwsem.c:1305 [inline] __down_write kernel/locking/rwsem.c:1314 [inline] down_write+0x231/0x270 kernel/locking/rwsem.c:1563 kernfs_add_one+0x94/0x560 fs/kernfs/dir.c:738 kernfs_create_dir_ns+0x1bf/0x220 fs/kernfs/dir.c:1021 sysfs_create_dir_ns+0x181/0x390 fs/sysfs/dir.c:59 create_dir lib/kobject.c:63 [inline] kobject_add_internal+0x6dd/0xd10 lib/kobject.c:223 kobject_add_varg lib/kobject.c:358 [inline] kobject_init_and_add+0x123/0x190 lib/kobject.c:441 nfs_netns_client_alloc fs/nfs/sysfs.c:163 [inline] nfs_netns_sysfs_setup+0xcb/0x150 fs/nfs/sysfs.c:175 nfs_net_init+0x11/0x20 fs/nfs/inode.c:2338 ops_init+0x353/0x5d0 net/core/net_namespace.c:135 setup_net+0x4bb/0xc10 net/core/net_namespace.c:332 copy_net_ns+0x359/0x5b0 net/core/net_namespace.c:478 create_new_namespaces+0x4db/0x8e0 kernel/nsproxy.c:110 copy_namespaces+0x333/0x390 kernel/nsproxy.c:178 copy_process+0x1a55/0x3fc0 kernel/fork.c:2256 kernel_clone+0x227/0x640 kernel/fork.c:2671 __do_sys_clone3 kernel/fork.c:2970 [inline] __se_sys_clone3+0x372/0x410 kernel/fork.c:2954 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fa950c8b5a9 RSP: 002b:00007fa951a0a038 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007fa950dac050 RCX: 00007fa950c8b5a9 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00007fa951a0a050 RBP: 00007fa950ce67b0 R08: 0000000000000000 R09: 0000000000000058 R10: 00007fa951a0a050 R11: 0000000000000246 R12: 0000000000000058 R13: 00007fff1d4ec90f R14: 00007fa951a0a300 R15: 0000000000022000 INFO: lockdep is turned off. NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 nmi_cpu_backtrace+0x4e3/0x560 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x19b/0x3e0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] watchdog+0xcf5/0xd40 kernel/hung_task.c:377 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 13103 Comm: syz-executor.3 Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 RIP: 0010:rwsem_try_write_lock kernel/locking/rwsem.c:610 [inline] RIP: 0010:rwsem_down_write_slowpath+0xbbd/0x14a0 kernel/locking/rwsem.c:1161 Code: 12 25 50 8a 48 8b 5c 24 48 48 89 df be 04 00 00 00 e8 f7 5b 8e f7 44 89 f8 87 03 48 8b 7c 24 18 e8 48 b7 00 00 48 8b 44 24 68 <42> 80 3c 28 00 48 8b 5c 24 30 74 08 48 89 df e8 1f 5a 8e f7 4c 8b RSP: 0018:ffffc9000ddf7200 EFLAGS: 00000046 RAX: 1ffff1100240cf26 RBX: 0000000000000001 RCX: 0000000000000001 RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc9000ddf70e0 RBP: ffffc9000ddf7430 R08: dffffc0000000000 R09: fffff52001bbee1c R10: fffff52001bbee1d R11: 1ffff92001bbee1c R12: ffffc9000ee3f280 R13: dffffc0000000000 R14: ffff8880120678d8 R15: 0000000000000002 FS: 00007f6341bd8700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5871855008 CR3: 0000000092534000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __down_write_common kernel/locking/rwsem.c:1305 [inline] __down_write kernel/locking/rwsem.c:1314 [inline] down_write+0x231/0x270 kernel/locking/rwsem.c:1563 kernfs_add_one+0x94/0x560 fs/kernfs/dir.c:738 __kernfs_create_file+0x232/0x2e0 fs/kernfs/file.c:1072 sysfs_add_file_mode_ns+0x21d/0x330 fs/sysfs/file.c:294 sysfs_create_file_ns+0x18e/0x290 fs/sysfs/file.c:355 bond_create_sysfs+0x71/0xf0 drivers/net/bonding/bond_sysfs.c:813 bond_net_init+0x8f/0xa0 drivers/net/bonding/bond_main.c:6320 ops_init+0x353/0x5d0 net/core/net_namespace.c:135 setup_net+0x4bb/0xc10 net/core/net_namespace.c:332 copy_net_ns+0x359/0x5b0 net/core/net_namespace.c:478 create_new_namespaces+0x4db/0x8e0 kernel/nsproxy.c:110 copy_namespaces+0x333/0x390 kernel/nsproxy.c:178 copy_process+0x1a55/0x3fc0 kernel/fork.c:2256 kernel_clone+0x227/0x640 kernel/fork.c:2671 __do_sys_clone3 kernel/fork.c:2970 [inline] __se_sys_clone3+0x372/0x410 kernel/fork.c:2954 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f6340e8b5a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6341bd8038 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f6340fac050 RCX: 00007f6340e8b5a9 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00007f6341bd8050 RBP: 00007f6340ee67b0 R08: 0000000000000000 R09: 0000000000000058 R10: 00007f6341bd8050 R11: 0000000000000246 R12: 0000000000000058 R13: 00007ffdf46897bf R14: 00007f6341bd8300 R15: 0000000000022000