INFO: task syz-executor:6335 blocked for more than 143 seconds. Not tainted 6.13.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:11696 pid:6335 tgid:6335 ppid:1 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5369 [inline] __schedule+0x17fb/0x4be0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6848 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905 __mutex_lock_common kernel/locking/mutex.c:665 [inline] __mutex_lock+0x7e7/0xee0 kernel/locking/mutex.c:735 lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444 jfs_umount+0x2ce/0x3a0 fs/jfs/jfs_umount.c:114 jfs_put_super+0x8a/0x190 fs/jfs/super.c:194 generic_shutdown_super+0x139/0x2d0 fs/super.c:642 kill_block_super+0x44/0x90 fs/super.c:1710 deactivate_locked_super+0xc4/0x130 fs/super.c:473 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373 task_work_run+0x24f/0x310 kernel/task_work.c:239 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f5031387057 RSP: 002b:00007ffdb38607c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f5031387057 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdb3860880 RBP: 00007ffdb3860880 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffdb3861900 R13: 00007f50314018f4 R14: 00007ffdb3861940 R15: 0000000000000024 Showing all locks held in the system: 1 lock held by khungtaskd/30: #0: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #0: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6744 4 locks held by kworker/u8:2/35: #0: ffff8880b863e758 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598 #1: ffff8880b8628948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x41d/0x7a0 kernel/sched/psi.c:987 #2: ffff8880884d0768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: wiphy_lock include/net/cfg80211.h:6019 [inline] #2: ffff8880884d0768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: cfg80211_wiphy_work+0xd9/0x480 net/wireless/core.c:426 #3: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #3: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #3: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: ieee80211_sta_active_ibss+0xc7/0x330 net/mac80211/ibss.c:642 6 locks held by kworker/u8:5/175: #0: ffff88801baeb148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline] #0: ffff88801baeb148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3317 #1: ffffc90002fc7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline] #1: ffffc90002fc7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3317 #2: ffffffff8fc946d0 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0x16a/0xd50 net/core/net_namespace.c:602 #3: ffff888040c260e8 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1014 [inline] #3: ffff888040c260e8 (&dev->mutex){....}-{4:4}, at: devl_dev_lock net/devlink/devl_internal.h:108 [inline] #3: ffff888040c260e8 (&dev->mutex){....}-{4:4}, at: devlink_pernet_pre_exit+0x13b/0x440 net/devlink/core.c:506 #4: ffff888040c27250 (&devlink->lock_key#30){+.+.}-{4:4}, at: devl_lock net/devlink/core.c:276 [inline] #4: ffff888040c27250 (&devlink->lock_key#30){+.+.}-{4:4}, at: devl_dev_lock net/devlink/devl_internal.h:109 [inline] #4: ffff888040c27250 (&devlink->lock_key#30){+.+.}-{4:4}, at: devlink_pernet_pre_exit+0x14d/0x440 net/devlink/core.c:506 #5: ffffffff8e93cec0 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x4c/0x530 kernel/rcu/tree.c:4565 2 locks held by kworker/u8:7/2931: 2 locks held by getty/5580: #0: ffff8880352520a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc900032fb2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211 2 locks held by sshd/5811: #0: ffff8880b873e758 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598 #1: ffff8880b8728948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x41d/0x7a0 kernel/sched/psi.c:987 3 locks held by kworker/u9:4/5833: #0: ffff888051fdd948 ((wq_completion)hci14){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline] #0: ffff888051fdd948 ((wq_completion)hci14){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3317 #1: ffffc90003a27d00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline] #1: ffffc90003a27d00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3317 #2: ffff88807b4b0d80 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x1ec/0x400 net/bluetooth/hci_sync.c:331 2 locks held by syz-executor/6335: #0: ffff8880233c40e0 (&type->s_umount_key#67){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff8880233c40e0 (&type->s_umount_key#67){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff8880233c40e0 (&type->s_umount_key#67){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 #1: ffffffff8ed53048 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor/6999: #0: ffff88807c40e0e0 (&type->s_umount_key#67){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff88807c40e0e0 (&type->s_umount_key#67){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff88807c40e0e0 (&type->s_umount_key#67){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 #1: ffffffff8ed53048 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444 1 lock held by syz.7.219/7661: #0: ffff88807c40e0e0 (&type->s_umount_key#67){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff88807c40e0e0 (&type->s_umount_key#67){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 2 locks held by syz-executor/7666: #0: ffff88804fd540e0 (&type->s_umount_key#67){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff88804fd540e0 (&type->s_umount_key#67){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff88804fd540e0 (&type->s_umount_key#67){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 #1: ffffffff8ed53048 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor/8270: #0: ffff888051b560e0 (&type->s_umount_key#67){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff888051b560e0 (&type->s_umount_key#67){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff888051b560e0 (&type->s_umount_key#67){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 #1: ffffffff8ed53048 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444 1 lock held by syz.5.301/8666: #0: ffff8880233c40e0 (&type->s_umount_key#67){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff8880233c40e0 (&type->s_umount_key#67){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 2 locks held by syz-executor/9008: #0: ffff88802334a0e0 (&type->s_umount_key#67){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff88802334a0e0 (&type->s_umount_key#67){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff88802334a0e0 (&type->s_umount_key#67){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 #1: ffffffff8ed53048 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444 1 lock held by syz.6.348/9157: #0: ffff88807c40e0e0 (&type->s_umount_key#67){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff88807c40e0e0 (&type->s_umount_key#67){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.2.352/9218: #0: ffff88804fd540e0 (&type->s_umount_key#67){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff88804fd540e0 (&type->s_umount_key#67){++++}-{4:4}, at: super_lock+0x196/0x400 fs/super.c:120 2 locks held by syz-executor/9406: #0: ffff88807fa720e0 (&type->s_umount_key#67){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff88807fa720e0 (&type->s_umount_key#67){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff88807fa720e0 (&type->s_umount_key#67){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 #1: ffffffff8ed53048 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444 1 lock held by syz.9.370/9449: #0: ffff88807c40e0e0 (&type->s_umount_key#67){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff88807c40e0e0 (&type->s_umount_key#67){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 2 locks held by syz-executor/9657: #0: ffff888092b6e0e0 (&type->s_umount_key#67){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff888092b6e0e0 (&type->s_umount_key#67){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff888092b6e0e0 (&type->s_umount_key#67){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 #1: ffffffff8ed53048 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444 1 lock held by syz.5.377/9872: #0: ffff8880233c40e0 (&type->s_umount_key#67){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff8880233c40e0 (&type->s_umount_key#67){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.5.377/9890: #0: ffff8880233c40e0 (&type->s_umount_key#67){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff8880233c40e0 (&type->s_umount_key#67){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.8.454/10514: #0: ffffffff8e93cff8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline] #0: ffffffff8e93cff8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:976 1 lock held by sed/10541: ============================================= NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 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:234 [inline] watchdog+0xff6/0x1040 kernel/hung_task.c:397 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 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 7937 Comm: kworker/u8:9 Not tainted 6.13.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: events_unbound nsim_dev_trap_report_work RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline] RIP: 0010:write_comp_data kernel/kcov.c:246 [inline] RIP: 0010:__sanitizer_cov_trace_switch+0xa4/0x120 kernel/kcov.c:351 Code: 8b 00 00 00 4c 8b 4c 24 20 65 4c 8b 1c 25 80 d4 03 00 31 d2 eb 08 48 ff c2 49 39 d2 74 71 4c 8b 74 d6 10 65 8b 05 84 5c 64 7e <25> 00 01 ff 00 74 11 3d 00 01 00 00 75 de 41 83 bb 1c 16 00 00 00 RSP: 0018:ffffc9000bb37a70 EFLAGS: 00000202 RAX: 0000000080000001 RBX: 0000000000000000 RCX: 000000008cac6f01 RDX: 0000000000000001 RSI: ffffffff8fca3750 RDI: 0000000000000000 RBP: 0000000000000001 R08: 0000000000000001 R09: ffffffff89957713 R10: 0000000000000003 R11: ffff888027720000 R12: ffffffff8cac6f4a R13: dffffc0000000000 R14: 000000000000000a R15: ffffffff8cac6f4a FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe9baa06378 CR3: 000000000e736000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: in_aton+0x323/0x410 net/core/utils.c:61 nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:763 [inline] nsim_dev_trap_report drivers/net/netdevsim/dev.c:805 [inline] nsim_dev_trap_report_work+0x4b7/0xb50 drivers/net/netdevsim/dev.c:851 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3317 worker_thread+0x870/0xd30 kernel/workqueue.c:3398 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