INFO: task syz-executor.0:8467 blocked for more than 143 seconds. Not tainted 6.7.0-rc4-syzkaller-00009-gbee0e7762ad2 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:26384 pid:8467 tgid:8421 ppid:5097 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5376 [inline] __schedule+0x1961/0x4ab0 kernel/sched/core.c:6688 __schedule_loop kernel/sched/core.c:6763 [inline] schedule+0x149/0x260 kernel/sched/core.c:6778 jfs_flush_journal+0x72b/0xec0 fs/jfs/jfs_logmgr.c:1564 jfs_sync_fs+0x80/0xa0 fs/jfs/super.c:684 sync_filesystem+0x1c0/0x220 fs/sync.c:66 jfs_remount+0x136/0x6b0 fs/jfs/super.c:432 reconfigure_super+0x440/0x870 fs/super.c:1143 do_remount fs/namespace.c:2884 [inline] path_mount+0xc24/0xfa0 fs/namespace.c:3656 do_mount fs/namespace.c:3677 [inline] __do_sys_mount fs/namespace.c:3886 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3863 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x45/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7fc4f7c7e1ea RSP: 002b:00007fc4f8945ee8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fc4f8945f80 RCX: 00007fc4f7c7e1ea RDX: 0000000020000180 RSI: 0000000020000100 RDI: 0000000000000000 RBP: 0000000020000180 R08: 00007fc4f8945f80 R09: 0000000001a404ac R10: 0000000001a404ac R11: 0000000000000206 R12: 0000000020000100 R13: 00007fc4f8945f40 R14: 0000000000000000 R15: 00000000200030c0 INFO: task syz-executor.2:8479 blocked for more than 143 seconds. Not tainted 6.7.0-rc4-syzkaller-00009-gbee0e7762ad2 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:25456 pid:8479 tgid:8477 ppid:5106 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5376 [inline] __schedule+0x1961/0x4ab0 kernel/sched/core.c:6688 __schedule_loop kernel/sched/core.c:6763 [inline] schedule+0x149/0x260 kernel/sched/core.c:6778 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835 rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline] __down_read_common kernel/locking/rwsem.c:1250 [inline] __down_read kernel/locking/rwsem.c:1263 [inline] down_read+0x703/0xa40 kernel/locking/rwsem.c:1528 __super_lock fs/super.c:58 [inline] super_lock+0x176/0x3a0 fs/super.c:117 super_lock_shared fs/super.c:146 [inline] iterate_supers+0x8c/0x180 fs/super.c:969 ksys_sync+0xbd/0x1c0 fs/sync.c:102 __do_sys_sync+0xe/0x20 fs/sync.c:113 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x45/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7ff734c7cae9 RSP: 002b:00007ff7359840c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2 RAX: ffffffffffffffda RBX: 00007ff734d9bf80 RCX: 00007ff734c7cae9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007ff734cc847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007ff734d9bf80 R15: 00007ffda7c8ecf8 Showing all locks held in the system: 1 lock held by khungtaskd/29: #0: ffffffff8d92cf60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline] #0: ffffffff8d92cf60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline] #0: ffffffff8d92cf60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614 2 locks held by kworker/u4:3/48: #0: ffff8880b983c358 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558 #1: ffff8880b9828808 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988 1 lock held by klogd/4501: #0: ffff8880b983c358 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558 2 locks held by getty/4820: #0: ffff8880266c40a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201 1 lock held by syz-executor.0/8467: #0: ffff888037d0a0e0 (&type->s_umount_key#67){++++}-{3:3}, at: do_remount fs/namespace.c:2881 [inline] #0: ffff888037d0a0e0 (&type->s_umount_key#67){++++}-{3:3}, at: path_mount+0xbdd/0xfa0 fs/namespace.c:3656 1 lock held by syz-executor.2/8479: #0: ffff888037d0a0e0 (&type->s_umount_key#67){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff888037d0a0e0 (&type->s_umount_key#67){++++}-{3:3}, at: super_lock+0x176/0x3a0 fs/super.c:117 1 lock held by syz-executor.0/9053: #0: ffff888037d0a0e0 (&type->s_umount_key#67){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff888037d0a0e0 (&type->s_umount_key#67){++++}-{3:3}, at: super_lock+0x176/0x3a0 fs/super.c:117 1 lock held by syz-executor.0/9145: #0: ffff888037d0a0e0 (&type->s_umount_key#67){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline] #0: ffff888037d0a0e0 (&type->s_umount_key#67){++++}-{3:3}, at: super_lock+0x176/0x3a0 fs/super.c:117 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.7.0-rc4-syzkaller-00009-gbee0e7762ad2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x198/0x310 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] watchdog+0xfaf/0xff0 kernel/hung_task.c:379 kthread+0x2d3/0x370 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 5157 Comm: kworker/0:5 Not tainted 6.7.0-rc4-syzkaller-00009-gbee0e7762ad2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 Workqueue: events_power_efficient wg_ratelimiter_gc_entries RIP: 0010:__lock_acquire+0x13d9/0x1fd0 kernel/locking/lockdep.c:5168 Code: 8b 01 ff c0 89 01 83 f8 30 0f 83 5b 02 00 00 3b 05 7c 39 70 0f 0f 87 b5 02 00 00 b9 01 00 00 00 89 c8 48 81 c4 90 00 00 00 5b <41> 5c 41 5d 41 5e 41 5f 5d c3 49 89 d6 48 c7 c7 80 b4 6a 8b e8 ae RSP: 0018:ffffc9000442f9c8 EFLAGS: 00000086 RAX: 0000000000000001 RBX: ffffc9000442fa80 RCX: 0000000000000001 RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffffffff90dd7438 RBP: 3661c12b77dae375 R08: ffffffff90dd743f R09: 1ffffffff21bae87 R10: dffffc0000000000 R11: fffffbfff21bae88 R12: ffff888073773b80 R13: ffff888073773b80 R14: 0000000000000000 R15: ffff888073773b80 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c014757000 CR3: 000000002a350000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 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:2630 [inline] process_scheduled_works+0x90f/0x1420 kernel/workqueue.c:2703 worker_thread+0xa5f/0x1000 kernel/workqueue.c:2784 kthread+0x2d3/0x370 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242