INFO: task syz-executor:5110 blocked for more than 143 seconds. Not tainted 6.10.0-rc6-syzkaller-00223-gc6653f49e4fd #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:20128 pid:5110 tgid:5110 ppid:1 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6837 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 tun_detach drivers/net/tun.c:698 [inline] tun_chr_close+0x3e/0x1b0 drivers/net/tun.c:3500 __fput+0x24a/0x8a0 fs/file_table.c:422 task_work_run+0x24f/0x310 kernel/task_work.c:180 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xa27/0x27e0 kernel/exit.c:876 do_group_exit+0x207/0x2c0 kernel/exit.c:1025 __do_sys_exit_group kernel/exit.c:1036 [inline] __se_sys_exit_group kernel/exit.c:1034 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1034 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: 0033:0x7f61c2375bd9 RSP: 002b:00007f61c262eb68 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007f61c23e353a RCX: 00007f61c2375bd9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 000000000000006b R08: 00007f61c262c905 R09: 00007f61c262fe00 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f61c262fe00 R13: 00007f61c23e3515 R14: 00000000000176ad R15: 000000000000001a INFO: task syz-executor:5111 blocked for more than 144 seconds. Not tainted 6.10.0-rc6-syzkaller-00223-gc6653f49e4fd #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:19152 pid:5111 tgid:5111 ppid:1 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6837 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 tun_detach drivers/net/tun.c:698 [inline] tun_chr_close+0x3e/0x1b0 drivers/net/tun.c:3500 __fput+0x24a/0x8a0 fs/file_table.c:422 task_work_run+0x24f/0x310 kernel/task_work.c:180 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xa27/0x27e0 kernel/exit.c:876 do_group_exit+0x207/0x2c0 kernel/exit.c:1025 get_signal+0x16a1/0x1740 kernel/signal.c:2909 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0xc9/0x360 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff2671746bc RSP: 002b:00007ff26742fd40 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: fffffffffffffe00 RBX: 0000000000000003 RCX: 00007ff2671746bc RDX: 0000000000000028 RSI: 00007ff26742fe40 RDI: 00000000000000f9 RBP: 00007ff26742fdcc R08: 0000000000000000 R09: 0079746972756365 R10: 00007ff2672d17e0 R11: 0000000000000246 R12: 0000000000000003 R13: 000000000001859c R14: 0000000000017203 R15: 000000000000001c INFO: task udevd:5147 blocked for more than 145 seconds. Not tainted 6.10.0-rc6-syzkaller-00223-gc6653f49e4fd #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:21712 pid:5147 tgid:5147 ppid:4544 flags:0x00000006 Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6837 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 device_lock include/linux/device.h:1009 [inline] uevent_show+0x17d/0x340 drivers/base/core.c:2743 dev_attr_show+0x55/0xc0 drivers/base/core.c:2437 sysfs_kf_seq_show+0x331/0x4c0 fs/sysfs/file.c:59 seq_read_iter+0x445/0xd60 fs/seq_file.c:230 new_sync_read fs/read_write.c:395 [inline] vfs_read+0x9bd/0xbc0 fs/read_write.c:476 ksys_read+0x1a0/0x2c0 fs/read_write.c:619 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: 0033:0x7fb510b16b6a RSP: 002b:00007ffe483e1cf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00005623c7c750f0 RCX: 00007fb510b16b6a RDX: 0000000000001000 RSI: 00005623c7c6f930 RDI: 0000000000000008 RBP: 00005623c7c750f0 R08: 0000000000000008 R09: 0000000000000000 R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000003fff R14: 00007ffe483e21d8 R15: 000000000000000a INFO: task kworker/0:5:5149 blocked for more than 146 seconds. Not tainted 6.10.0-rc6-syzkaller-00223-gc6653f49e4fd #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:5 state:D stack:19368 pid:5149 tgid:5149 ppid:2 flags:0x00004000 Workqueue: events_power_efficient crda_timeout_work Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6837 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 crda_timeout_work+0x15/0x50 net/wireless/reg.c:540 process_one_work kernel/workqueue.c:3248 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3329 worker_thread+0x86d/0xd50 kernel/workqueue.c:3409 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 INFO: task kworker/1:5:5152 blocked for more than 147 seconds. Not tainted 6.10.0-rc6-syzkaller-00223-gc6653f49e4fd #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:5 state:D stack:22992 pid:5152 tgid:5152 ppid:2 flags:0x00004000 Workqueue: events linkwatch_event Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6837 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 linkwatch_event+0xe/0x60 net/core/link_watch.c:276 process_one_work kernel/workqueue.c:3248 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3329 worker_thread+0x86d/0xd50 kernel/workqueue.c:3409 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 INFO: task syz.3.45:5311 blocked for more than 148 seconds. Not tainted 6.10.0-rc6-syzkaller-00223-gc6653f49e4fd #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.3.45 state:D stack:22576 pid:5311 tgid:5309 ppid:5109 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6837 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 tun_detach drivers/net/tun.c:698 [inline] tun_chr_close+0x3e/0x1b0 drivers/net/tun.c:3500 __fput+0x24a/0x8a0 fs/file_table.c:422 task_work_run+0x24f/0x310 kernel/task_work.c:180 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xa27/0x27e0 kernel/exit.c:876 do_group_exit+0x207/0x2c0 kernel/exit.c:1025 get_signal+0x16a1/0x1740 kernel/signal.c:2909 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0xc9/0x360 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8a2c375bd9 RSP: 002b:00007f8a2bdff048 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: 0000000000000001 RBX: 00007f8a2c503f60 RCX: 00007f8a2c375bd9 RDX: 0400000000000002 RSI: 0000000020003680 RDI: 0000000000000005 RBP: 00007f8a2c3e4aa1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f8a2c503f60 R15: 00007f8a2c62fa68 INFO: task syz-executor:5340 blocked for more than 149 seconds. Not tainted 6.10.0-rc6-syzkaller-00223-gc6653f49e4fd #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:26784 pid:5340 tgid:5340 ppid:1 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6837 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871 ops_init+0x359/0x610 net/core/net_namespace.c:139 setup_net+0x515/0xca0 net/core/net_namespace.c:343 copy_net_ns+0x4e2/0x7b0 net/core/net_namespace.c:508 create_new_namespaces+0x425/0x7b0 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0x124/0x180 kernel/nsproxy.c:228 ksys_unshare+0x619/0xc10 kernel/fork.c:3323 __do_sys_unshare kernel/fork.c:3394 [inline] __se_sys_unshare kernel/fork.c:3392 [inline] __x64_sys_unshare+0x38/0x40 kernel/fork.c:3392 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: 0033:0x7f2e7d977337 RSP: 002b:00007f2e7dc2ffa8 EFLAGS: 00000206 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 00007f2e7d9e4be6 RCX: 00007f2e7d977337 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000 RBP: 0000000000000000 R08: 00007f2e7e637d60 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 000000000000000c R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000009 INFO: task syz-executor:5341 blocked for more than 150 seconds. Not tainted 6.10.0-rc6-syzkaller-00223-gc6653f49e4fd #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:26656 pid:5341 tgid:5341 ppid:1 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6837 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752 register_nexthop_notifier+0x84/0x290 net/ipv4/nexthop.c:3871 ops_init+0x359/0x610 net/core/net_namespace.c:139 setup_net+0x515/0xca0 net/core/net_namespace.c:343 copy_net_ns+0x4e2/0x7b0 net/core/net_namespace.c:508 create_new_namespaces+0x425/0x7b0 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0x124/0x180 kernel/nsproxy.c:228 ksys_unshare+0x619/0xc10 kernel/fork.c:3323 __do_sys_unshare kernel/fork.c:3394 [inline] __se_sys_unshare kernel/fork.c:3392 [inline] __x64_sys_unshare+0x38/0x40 kernel/fork.c:3392 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: 0033:0x7f5449377337 RSP: 002b:00007f544962ffa8 EFLAGS: 00000206 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 00007f54493e4be6 RCX: 00007f5449377337 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000 RBP: 0000000000000000 R08: 00007f544a037d60 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 000000000000000c R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000009 INFO: task kworker/1:8:5349 blocked for more than 151 seconds. Not tainted 6.10.0-rc6-syzkaller-00223-gc6653f49e4fd #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:8 state:D stack:30000 pid:5349 tgid:5349 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5408 [inline] __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745 __schedule_loop kernel/sched/core.c:6822 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6837 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894 kthread+0x23b/0x390 kernel/kthread.c:382 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Showing all locks held in the system: 1 lock held by kworker/R-mm_pe/13: #0: ffffffff8e1deb68 ( wq_pool_attach_mutex ){+.+.}-{3:3} , at: worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2690 3 locks held by kworker/1:0/25: 1 lock held by khungtaskd/30: #0: ffffffff8e333f20 ( rcu_read_lock ){....}-{1:2} , at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline] , at: rcu_read_lock include/linux/rcupdate.h:781 [inline] , at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614 1 lock held by kworker/R-write/32: #0: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2690 3 locks held by kworker/1:1/46: 3 locks held by kworker/u8:5/465: #0: ffff888015ed5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline] ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329 #1: ffffc900031afd00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline] #1: ffffc900031afd00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329 #2: ffffffff8f5da590 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:594 1 lock held by kworker/R-dm_bu/2305: #0: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2690 1 lock held by kworker/R-bat_e/2753: #0: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2690 1 lock held by kworker/u8:7/2852: #0: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3} , at: worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2690 2 locks held by dhcpcd/4758: #0: ffff88807bcf8678 ( nlk_cb_mutex-ROUTE ){+.+.}-{3:3}, at: netlink_dump+0xcb/0xe50 net/netlink/af_netlink.c:2277 #1: ffffffff8f5e6dc8 (rtnl_mutex){+.+.}-{3:3}, at: netlink_dump+0x5d3/0xe50 net/netlink/af_netlink.c:2336 2 locks held by getty/4850: #0: ffff88802f9900a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc900031432f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211 6 locks held by kworker/1:3/5093: 3 locks held by kworker/0:3/5097: #0: ffff888015081948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline] ffff888015081948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329 #1: ffffc90003e17d00 ((reg_check_chans).work){+.+.}-{0:0} , at: process_one_work kernel/workqueue.c:3224 [inline] , at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329 #2: ffffffff8f5e6dc8 (rtnl_mutex){+.+.}-{3:3}, at: reg_check_chans_work+0x91/0xea0 net/wireless/reg.c:2478 1 lock held by syz-executor/5110: #0: ffffffff8f5e6dc8 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline] (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3e/0x1b0 drivers/net/tun.c:3500 1 lock held by syz-executor/5111: #0: ffffffff8f5e6dc8 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline] ffffffff8f5e6dc8 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3e/0x1b0 drivers/net/tun.c:3500 1 lock held by kworker/R-wg-cr/5128: #0: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2690 1 lock held by kworker/R-wg-cr/5129: #0: ffffffff8e1deb68 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2690