INFO: task syz.5.272:9037 blocked for more than 143 seconds. Not tainted 6.13.0-rc6-syzkaller-00006-g5428dc1906dd #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.5.272 state:D stack:23840 pid:9037 tgid:9035 ppid:7876 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 exit_task_work include/linux/task_work.h:43 [inline] do_exit+0xa2a/0x28e0 kernel/exit.c:938 do_group_exit+0x207/0x2c0 kernel/exit.c:1087 get_signal+0x16b2/0x1750 kernel/signal.c:3017 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [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+0xce/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: 0033:0x7fe9d09874ca RSP: 002b:00007fe9d16ece68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: 0000000000000000 RBX: 00007fe9d16ecef0 RCX: 00007fe9d09874ca RDX: 0000000020000f40 RSI: 0000000020000140 RDI: 0000000000000000 RBP: 0000000020000f40 R08: 00007fe9d16ecef0 R09: 0000000001a4a438 R10: 0000000001a4a438 R11: 0000000000000246 R12: 0000000020000140 R13: 00007fe9d16eceb0 R14: 0000000000000000 R15: 00000000200008c0 INFO: task syz-executor:9220 blocked for more than 144 seconds. Not tainted 6.13.0-rc6-syzkaller-00006-g5428dc1906dd #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:20544 pid:9220 tgid:9220 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: 0033:0x7f3822787057 RSP: 002b:00007fffda95a8c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f3822787057 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffda95a980 RBP: 00007fffda95a980 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fffda95ba00 R13: 00007f38228018f4 R14: 00007fffda95ba40 R15: 0000000000000006 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 3 locks held by kworker/u8:6/1140: 3 locks held by kworker/u8:7/3455: #0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline] #0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3310 #1: ffffc9000ce37d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline] #1: ffffc9000ce37d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3310 #2: ffffffff8fca0a08 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:281 4 locks held by kworker/u8:9/3557: #0: ffff88801baeb148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline] #0: ffff88801baeb148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3310 #1: ffffc9000d007d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline] #1: ffffc9000d007d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3310 #2: ffffffff8fc94550 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0x16a/0xd50 net/core/net_namespace.c:602 #3: ffffffff8fca0a08 (rtnl_mutex){+.+.}-{4:4}, at: default_device_exit_batch+0xe9/0xaa0 net/core/dev.c:12061 2 locks held by kworker/u8:10/3574: #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 1 lock held by dhcpcd/5490: #0: ffffffff8fca0a08 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:128 [inline] #0: ffffffff8fca0a08 (rtnl_mutex){+.+.}-{4:4}, at: devinet_ioctl+0x31a/0x1ac0 net/ipv4/devinet.c:1129 2 locks held by getty/5573: #0: ffff88814da7b0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc90002fde2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211 2 locks held by syz-executor/8964: #0: ffff888048cd20e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff888048cd20e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff888048cd20e0 (&type->s_umount_key#84){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 #1: ffffffff8ed53028 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz.5.272/9037: #0: ffff88814377c0e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff88814377c0e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff88814377c0e0 (&type->s_umount_key#84){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 #1: ffffffff8ed53028 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor/9220: #0: ffff8880610660e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff8880610660e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff8880610660e0 (&type->s_umount_key#84){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 #1: ffffffff8ed53028 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444 1 lock held by syz-executor/9703: #0: ffff888011e5a0e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff888011e5a0e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff888011e5a0e0 (&type->s_umount_key#84){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 1 lock held by syz.8.315/9741: #0: ffff88814377c0e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff88814377c0e0 (&type->s_umount_key#84){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 2 locks held by syz-executor/10200: #0: ffff8880310f40e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff8880310f40e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff8880310f40e0 (&type->s_umount_key#84){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 #1: ffffffff8ed53028 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444 1 lock held by syz.5.397/10432: #0: ffff88814377c0e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff88814377c0e0 (&type->s_umount_key#84){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.5.397/10452: #0: ffff88814377c0e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff88814377c0e0 (&type->s_umount_key#84){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.6.402/10454: #0: ffff888048cd20e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff888048cd20e0 (&type->s_umount_key#84){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 2 locks held by syz-executor/10592: #0: ffff888088e5a0e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff888088e5a0e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff888088e5a0e0 (&type->s_umount_key#84){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 #1: ffffffff8ed53028 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor/10625: #0: ffff888070e820e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff888070e820e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff888070e820e0 (&type->s_umount_key#84){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 #1: ffffffff8ed53028 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444 1 lock held by syz.2.468/11006: #0: ffff8880610660e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff8880610660e0 (&type->s_umount_key#84){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.2.468/11013: #0: ffff8880610660e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff8880610660e0 (&type->s_umount_key#84){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 2 locks held by syz-executor/11284: #0: ffff8880547820e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff8880547820e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff8880547820e0 (&type->s_umount_key#84){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 #1: ffffffff8ed53028 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor/11657: #0: ffff88806c2ae0e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff88806c2ae0e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff88806c2ae0e0 (&type->s_umount_key#84){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 #1: ffffffff8ed53028 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444 1 lock held by syz.2.546/12224: #0: ffff8880610660e0 (&type->s_umount_key#84){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff8880610660e0 (&type->s_umount_key#84){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 2 locks held by syz-executor/12238: #0: ffffffff8f44a0a0 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #0: ffffffff8f44a0a0 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffffffff8f44a0a0 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x22/0x250 net/core/rtnetlink.c:555 #1: ffffffff8fca0a08 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #1: ffffffff8fca0a08 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:326 [inline] #1: ffffffff8fca0a08 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0xce2/0x2210 net/core/rtnetlink.c:4011 1 lock held by syz-executor/12264: #0: ffffffff8fca0a08 (rtnl_mutex){+.+.}-{4:4}, at: __tun_chr_ioctl+0x48c/0x2400 drivers/net/tun.c:3121 3 locks held by syz.6.575/12302: #0: ffff888011aa0d80 (&hdev->req_lock){+.+.}-{4:4}, at: hci_dev_do_close net/bluetooth/hci_core.c:480 [inline] #0: ffff888011aa0d80 (&hdev->req_lock){+.+.}-{4:4}, at: hci_unregister_dev+0x203/0x510 net/bluetooth/hci_core.c:2697 #1: ffff888011aa0078 (&hdev->lock){+.+.}-{4:4}, at: hci_dev_close_sync+0x5c8/0x11c0 net/bluetooth/hci_sync.c:5200 #2: ffffffff8e93cff8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline] #2: ffffffff8e93cff8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:976 1 lock held by syz.5.577/12305: #0: ffffffff8fca0a08 (rtnl_mutex){+.+.}-{4:4}, at: tun_detach drivers/net/tun.c:698 [inline] #0: ffffffff8fca0a08 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x3b/0x1b0 drivers/net/tun.c:3517 ============================================= NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc6-syzkaller-00006-g5428dc1906dd #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 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 5902 Comm: kworker/0:6 Not tainted 6.13.0-rc6-syzkaller-00006-g5428dc1906dd #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: events_power_efficient wg_ratelimiter_gc_entries RIP: 0010:debug_spin_lock_before kernel/locking/spinlock_debug.c:87 [inline] RIP: 0010:do_raw_spin_lock+0xad/0x370 kernel/locking/spinlock_debug.c:115 Code: 84 c0 0f 85 f6 01 00 00 8b 03 3d ad 4e ad de 0f 85 62 01 00 00 4d 8d 6c 24 10 4c 89 e8 48 c1 e8 03 48 89 44 24 20 80 3c 10 00 <74> 12 4c 89 ef e8 19 34 87 00 48 ba 00 00 00 00 00 fc ff df 49 8b RSP: 0018:ffffc900043dfa80 EFLAGS: 00000246 RAX: 1ffffffff1e84a46 RBX: ffffffff8f425224 RCX: 1ffff9200087bf58 RDX: dffffc0000000000 RSI: 1ffff9200087bf58 RDI: ffffffff8f425220 RBP: ffffc900043dfb58 R08: ffffffff94271977 R09: 1ffffffff284e32e R10: dffffc0000000000 R11: fffffbfff284e32f R12: ffffffff8f425220 R13: ffffffff8f425230 R14: 0000006e741642f4 R15: ffffffff8f425340 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055770a7dc890 CR3: 000000000e736000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: spin_lock include/linux/spinlock.h:351 [inline] wg_ratelimiter_gc_entries+0x60/0x470 drivers/net/wireguard/ratelimiter.c:63 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310 worker_thread+0x870/0xd30 kernel/workqueue.c:3391 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