INFO: task syz-executor.4:7450 blocked for more than 143 seconds. Not tainted 6.9.0-rc3-syzkaller-gfec50db7033e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:0 pid:7450 tgid:7450 ppid:6262 flags:0x00000005 Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5409 [inline] __schedule+0x14bc/0x24ec kernel/sched/core.c:6746 __schedule_loop kernel/sched/core.c:6823 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6838 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6895 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:684 __mutex_lock kernel/locking/mutex.c:752 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804 bdev_release+0x184/0x64c block/bdev.c:1050 blkdev_release+0x20/0x34 block/fops.c:628 __fput+0x30c/0x738 fs/file_table.c:422 __fput_sync+0x60/0x9c fs/file_table.c:507 __do_sys_close fs/open.c:1556 [inline] __se_sys_close fs/open.c:1541 [inline] __arm64_sys_close+0x150/0x1e0 fs/open.c:1541 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 INFO: task syz-executor.4:7451 blocked for more than 143 seconds. Not tainted 6.9.0-rc3-syzkaller-gfec50db7033e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:0 pid:7451 tgid:7450 ppid:6262 flags:0x0000000d Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5409 [inline] __schedule+0x14bc/0x24ec kernel/sched/core.c:6746 __schedule_loop kernel/sched/core.c:6823 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6838 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6895 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:684 __mutex_lock kernel/locking/mutex.c:752 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804 bdev_release+0x184/0x64c block/bdev.c:1050 blkdev_release+0x20/0x34 block/fops.c:628 __fput+0x30c/0x738 fs/file_table.c:422 ____fput+0x20/0x30 fs/file_table.c:450 task_work_run+0x230/0x2e0 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:713 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 INFO: task syz-executor.4:7452 blocked for more than 143 seconds. Not tainted 6.9.0-rc3-syzkaller-gfec50db7033e #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:0 pid:7452 tgid:7450 ppid:6262 flags:0x00000005 Call trace: __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553 context_switch kernel/sched/core.c:5409 [inline] __schedule+0x14bc/0x24ec kernel/sched/core.c:6746 __schedule_loop kernel/sched/core.c:6823 [inline] schedule+0xbc/0x238 kernel/sched/core.c:6838 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6895 __mutex_lock_common+0xbd8/0x21a0 kernel/locking/mutex.c:684 __mutex_lock kernel/locking/mutex.c:752 [inline] mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:804 bdev_open+0xd0/0xc08 block/bdev.c:868 blkdev_open+0x1c0/0x270 block/fops.c:620 do_dentry_open+0x778/0x12b4 fs/open.c:955 vfs_open+0x7c/0x90 fs/open.c:1089 do_open fs/namei.c:3642 [inline] path_openat+0x1f6c/0x2830 fs/namei.c:3799 do_filp_open+0x1bc/0x3cc fs/namei.c:3826 do_sys_openat2+0x124/0x1b8 fs/open.c:1406 do_sys_open fs/open.c:1421 [inline] __do_sys_openat fs/open.c:1437 [inline] __se_sys_openat fs/open.c:1432 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1432 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 Showing all locks held in the system: 3 locks held by kworker/0:0/7: #0: ffff0000c0028948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x668/0x15d4 kernel/workqueue.c:3228 #1: ffff800093bd7c20 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x6b4/0x15d4 kernel/workqueue.c:3228 #2: ffff0000effee240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x270/0x32bc drivers/net/netdevsim/fib.c:1489 4 locks held by kworker/u8:0/10: #0: ffff0000c1871948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x668/0x15d4 kernel/workqueue.c:3228 #1: ffff800093c07c20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x6b4/0x15d4 kernel/workqueue.c:3228 #2: ffff800091bc1610 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x13c/0x9b4 net/core/net_namespace.c:591 #3: ffff0000ea489408 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_destruct+0x11c/0x2c0 drivers/net/wireguard/device.c:249 3 locks held by kworker/u8:1/11: #0: ffff0000d1b05948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x668/0x15d4 kernel/workqueue.c:3228 #1: ffff800093c17c20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6b4/0x15d4 kernel/workqueue.c:3228 #2: ffff800091bcd728 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 3 locks held by kworker/1:0/24: #0: ffff0000c0028948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x668/0x15d4 kernel/workqueue.c:3228 #1: ffff800093cf7c20 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x6b4/0x15d4 kernel/workqueue.c:3228 #2: ffff0000c75d7240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x270/0x32bc drivers/net/netdevsim/fib.c:1489 1 lock held by khungtaskd/30: #0: ffff80008f057840 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:328 3 locks held by kworker/u8:2/41: 2 locks held by dhcpcd/5911: #0: ffff0000feba6678 (nlk_cb_mutex-ROUTE){+.+.}-{3:3}, at: __netlink_dump_start+0xf8/0x71c net/netlink/af_netlink.c:2350 #1: ffff800091bcd728 (rtnl_mutex){+.+.}-{3:3}, at: netlink_dump+0x48c/0xbf0 net/netlink/af_netlink.c:2268 2 locks held by getty/5998: #0: ffff0000cca4d0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340 #1: ffff800097b9b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2201 3 locks held by kworker/0:4/6311: #0: ffff0000c0028948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x668/0x15d4 kernel/workqueue.c:3228 #1: ffff8000988b7c20 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x6b4/0x15d4 kernel/workqueue.c:3228 #2: ffff800091bcd728 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:79 3 locks held by kworker/1:6/6314: #0: ffff0000c0028948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x668/0x15d4 kernel/workqueue.c:3228 #1: ffff800098887c20 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x6b4/0x15d4 kernel/workqueue.c:3228 #2: ffff0000f87f4240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x270/0x32bc drivers/net/netdevsim/fib.c:1489 1 lock held by udevd/6458: #0: ffff0000ca1d54c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0xd0/0xc08 block/bdev.c:868 1 lock held by syz-executor.4/7450: #0: ffff0000ca1d54c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_release+0x184/0x64c block/bdev.c:1050 1 lock held by syz-executor.4/7451: #0: ffff0000ca1d54c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_release+0x184/0x64c block/bdev.c:1050 1 lock held by syz-executor.4/7452: #0: ffff0000ca1d54c8 (&disk->open_mutex){+.+.}-{3:3}, at: bdev_open+0xd0/0xc08 block/bdev.c:868 1 lock held by syz-executor.0/8831: #0: ffff0000d8aa2420 (sb_writers#4){.+.+}-{0:0}, at: direct_splice_actor+0x54/0x1d8 fs/splice.c:1163 3 locks held by syz-executor.4/10511: #0: ffff800091bcd728 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800091bcd728 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e0/0xdbc net/core/rtnetlink.c:6592 #1: ffff0000d9a31408 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_open+0x20c/0x424 drivers/net/wireguard/device.c:50 #2: ffff80008f05cb78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline] #2: ffff80008f05cb78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x374/0x6c8 kernel/rcu/tree_exp.h:939 1 lock held by syz-executor.2/10588: #0: ffff800091bcd728 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffff800091bcd728 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e0/0xdbc net/core/rtnetlink.c:6592 2 locks held by syz-executor.1/10833: 3 locks held by syz-executor.0/10835: =============================================