INFO: task syz-executor:11022 blocked for more than 143 seconds. Not tainted 6.13.0-rc7-syzkaller-00149-g9bffa1ad25b8 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:14624 pid:11022 tgid:11022 ppid:1 flags:0x00004004 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: 0033:0x7f7f70f87057 RSP: 002b:00007ffffa9f8388 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f7f70f87057 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffffa9f8440 RBP: 00007ffffa9f8440 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffffa9f94c0 R13: 00007f7f710018f4 R14: 00007ffffa9f9500 R15: 000000000000001c INFO: task syz-executor:11835 blocked for more than 143 seconds. Not tainted 6.13.0-rc7-syzkaller-00149-g9bffa1ad25b8 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:20096 pid:11835 tgid:11835 ppid:1 flags:0x00004004 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: 0033:0x7f6a2db87057 RSP: 002b:00007ffc56b86af8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f6a2db87057 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc56b86bb0 RBP: 00007ffc56b86bb0 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc56b87c30 R13: 00007f6a2dc018f4 R14: 00007ffc56b87c70 R15: 0000000000000009 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/u8:10/3549: 2 locks held by dhcpcd/5490: #0: ffff8880324d06c8 (nlk_cb_mutex-ROUTE){+.+.}-{4:4}, at: netlink_dump+0xcb/0xe10 net/netlink/af_netlink.c:2263 #1: ffffffff8fca0c88 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #1: ffffffff8fca0c88 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dumpit+0x99/0x200 net/core/rtnetlink.c:6790 2 locks held by getty/5583: #0: ffff8880364a20a0 (&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 1 lock held by syz.9.462/10751: #0: ffff888011f6e0e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff888011f6e0e0 (&type->s_umount_key#65){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 2 locks held by syz-executor/10889: #0: ffff888011f6e0e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff888011f6e0e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff888011f6e0e0 (&type->s_umount_key#65){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 #1: ffffffff8ed530c8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor/10981: #0: ffff88807930a0e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff88807930a0e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff88807930a0e0 (&type->s_umount_key#65){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 #1: ffffffff8ed530c8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor/10995: #0: ffff8880538700e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff8880538700e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff8880538700e0 (&type->s_umount_key#65){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 #1: ffffffff8ed530c8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor/11022: #0: ffff8880255720e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff8880255720e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff8880255720e0 (&type->s_umount_key#65){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 #1: ffffffff8ed530c8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444 2 locks held by syz-executor/11835: #0: ffff8880858380e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff8880858380e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff8880858380e0 (&type->s_umount_key#65){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 #1: ffffffff8ed530c8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444 1 lock held by syz.3.529/12006: #0: ffff888011f6e0e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff888011f6e0e0 (&type->s_umount_key#65){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.9.539/12124: #0: ffff888011f6e0e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff888011f6e0e0 (&type->s_umount_key#65){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.9.539/12126: #0: ffff888011f6e0e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff888011f6e0e0 (&type->s_umount_key#65){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.9.539/12128: #0: ffff888011f6e0e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff888011f6e0e0 (&type->s_umount_key#65){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.9.539/12129: #0: ffff888011f6e0e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff888011f6e0e0 (&type->s_umount_key#65){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.9.539/12134: #0: ffff888011f6e0e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff888011f6e0e0 (&type->s_umount_key#65){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 2 locks held by syz-executor/12135: #0: ffff88806a63e0e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff88806a63e0e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff88806a63e0e0 (&type->s_umount_key#65){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 #1: ffffffff8ed530c8 (jfs_log_mutex){+.+.}-{4:4}, at: lmLogClose+0xb2/0x530 fs/jfs/jfs_logmgr.c:1444 1 lock held by syz.7.617/13104: #0: ffff8880538700e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff8880538700e0 (&type->s_umount_key#65){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.8.631/13170: #0: ffff888011f6e0e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff888011f6e0e0 (&type->s_umount_key#65){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz-executor/13183: #0: ffff88802cb940e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff88802cb940e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff88802cb940e0 (&type->s_umount_key#65){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 1 lock held by syz.5.665/13526: #0: ffff8880858380e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff8880858380e0 (&type->s_umount_key#65){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.1.680/13599: #0: ffff8880255720e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff8880255720e0 (&type->s_umount_key#65){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 5 locks held by kworker/u8:21/13923: #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: ffffc9000bb2fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline] #1: ffffc9000bb2fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3317 #2: ffffffff8fc947d0 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0x16a/0xd50 net/core/net_namespace.c:602 #3: ffffffff8fca0c88 (rtnl_mutex){+.+.}-{4:4}, at: default_device_exit_batch+0xe9/0xaa0 net/core/dev.c:12078 #4: ffffffff8e93cff8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline] #4: ffffffff8e93cff8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:976 5 locks held by kworker/u8:23/13925: #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: ffff8880b862a718 (&base->lock){-.-.}-{2:2}, at: __mod_timer+0x744/0xeb0 kernel/time/timer.c:1163 #3: ffffffff9a58bf58 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_activate+0x17f/0x580 lib/debugobjects.c:818 #4: ffffffff9a54aeb8 (&obj_hash[i].lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598 2 locks held by syz-executor/13964: #0: ffff8880362f40e0 (&type->s_umount_key#54){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline] #0: ffff8880362f40e0 (&type->s_umount_key#54){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline] #0: ffff8880362f40e0 (&type->s_umount_key#54){++++}-{4:4}, at: deactivate_super+0xb5/0xf0 fs/super.c:505 #1: ffffffff8e93cec0 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x4c/0x530 kernel/rcu/tree.c:4565 1 lock held by syz.7.779/14202: #0: ffff8880538700e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff8880538700e0 (&type->s_umount_key#65){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.0.780/14205: #0: ffff888011f6e0e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff888011f6e0e0 (&type->s_umount_key#65){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 1 lock held by syz.6.792/14325: #0: ffff88807930a0e0 (&type->s_umount_key#65){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline] #0: ffff88807930a0e0 (&type->s_umount_key#65){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120 ============================================= NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc7-syzkaller-00149-g9bffa1ad25b8 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 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: 25 Comm: kworker/1:0 Not tainted 6.13.0-rc7-syzkaller-00149-g9bffa1ad25b8 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Workqueue: events_power_efficient wg_ratelimiter_gc_entries RIP: 0010:__lock_release kernel/locking/lockdep.c:5507 [inline] RIP: 0010:lock_release+0x210/0xa30 kernel/locking/lockdep.c:5870 Code: 00 48 c7 c0 80 8c 18 90 48 c1 e8 03 42 0f b6 04 38 84 c0 4c 8b 74 24 18 4c 8b 6c 24 20 0f 85 75 05 00 00 83 3d a0 b3 9d 0e 00 <0f> 84 bf 03 00 00 49 8d b5 d8 0a 00 00 48 89 f0 48 c1 e8 03 48 89 RSP: 0018:ffffc900001f7780 EFLAGS: 00000002 RAX: 0000000000000000 RBX: 0000000000000046 RCX: ffffc900001f7803 RDX: 1ffff9200003ef00 RSI: ffffffff8c0aa620 RDI: ffffffff8c5edee0 RBP: ffffc900001f78b0 R08: ffffffff901859f7 R09: 1ffffffff2030b3e R10: dffffc0000000000 R11: fffffbfff2030b3f R12: 1ffff9200003eefc R13: ffff88801d2f9e00 R14: ffff8880b872b7d8 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6c4c3452d8 CR3: 0000000011dc0000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline] _raw_spin_unlock_irqrestore+0x79/0x140 kernel/locking/spinlock.c:194 __mod_timer+0xb89/0xeb0 kernel/time/timer.c:1185 queue_delayed_work_on+0x1ca/0x390 kernel/workqueue.c:2559 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