INFO: task kworker/0:15:6665 blocked for more than 143 seconds. Not tainted 6.1.0-syzkaller-11674-g84e57d292203 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:15 state:D stack:21688 pid:6665 ppid:2 flags:0x00004000 Workqueue: gfs_recovery gfs2_recover_func Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0x995/0xe20 kernel/sched/core.c:6555 schedule+0xcb/0x190 kernel/sched/core.c:6631 io_schedule+0x83/0x100 kernel/sched/core.c:8811 folio_wait_bit_common+0x83a/0x12a0 mm/filemap.c:1297 folio_wait_locked include/linux/pagemap.h:1021 [inline] gfs2_jhead_process_page+0x195/0x800 fs/gfs2/lops.c:476 gfs2_find_jhead+0x671/0xea0 fs/gfs2/lops.c:583 gfs2_recover_func+0x65b/0x1f30 fs/gfs2/recovery.c:460 process_one_work+0x877/0xdb0 kernel/workqueue.c:2289 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 INFO: task syz-executor.2:10931 blocked for more than 144 seconds. Not tainted 6.1.0-syzkaller-11674-g84e57d292203 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:20872 pid:10931 ppid:5104 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0x995/0xe20 kernel/sched/core.c:6555 schedule+0xcb/0x190 kernel/sched/core.c:6631 bit_wait+0xe/0xc0 kernel/sched/wait_bit.c:199 __wait_on_bit+0xb5/0x170 kernel/sched/wait_bit.c:49 out_of_line_wait_on_bit+0x1c3/0x240 kernel/sched/wait_bit.c:64 wait_on_bit include/linux/wait_bit.h:76 [inline] gfs2_recover_journal+0xda/0x120 fs/gfs2/recovery.c:577 init_journal+0x18a5/0x22c0 fs/gfs2/ops_fstype.c:835 init_inodes+0xdc/0x340 fs/gfs2/ops_fstype.c:889 gfs2_fill_super+0x1bb2/0x2700 fs/gfs2/ops_fstype.c:1247 get_tree_bdev+0x400/0x620 fs/super.c:1282 gfs2_get_tree+0x50/0x210 fs/gfs2/ops_fstype.c:1330 vfs_get_tree+0x88/0x270 fs/super.c:1489 do_new_mount+0x289/0xad0 fs/namespace.c:3145 do_mount fs/namespace.c:3488 [inline] __do_sys_mount fs/namespace.c:3697 [inline] __se_sys_mount+0x2d3/0x3c0 fs/namespace.c:3674 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7faaf0e8d60a RSP: 002b:00007faaf1cd3f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 000000000001f6b2 RCX: 00007faaf0e8d60a RDX: 000000002001f680 RSI: 000000002001f6c0 RDI: 00007faaf1cd3fe0 RBP: 00007faaf1cd4020 R08: 00007faaf1cd4020 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 000000002001f680 R13: 000000002001f6c0 R14: 00007faaf1cd3fe0 R15: 000000002001f700 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8d326d50 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507 1 lock held by rcu_tasks_trace/13: #0: ffffffff8d327550 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507 1 lock held by ksoftirqd/0/15: 1 lock held by khungtaskd/28: #0: ffffffff8d326b80 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 2 locks held by kworker/u4:4/56: #0: ffff8880b983a1d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:537 #1: ffffc90001577d00 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264 2 locks held by getty/4750: #0: ffff88814b221098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244 #1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1650 drivers/tty/n_tty.c:2177 2 locks held by syz-executor.0/5102: #0: ffff8880873540e0 (&type->s_umount_key#74){++++}-{3:3}, at: deactivate_super+0x96/0xd0 fs/super.c:362 #1: ffffffff8d32c1f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline] #1: ffffffff8d32c1f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x384/0x860 kernel/rcu/tree_exp.h:946 3 locks held by kworker/1:4/5166: #0: ffff888012864d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0 #1: ffffc9000450fd00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264 #2: ffffffff8d32c1f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline] #2: ffffffff8d32c1f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x455/0x860 kernel/rcu/tree_exp.h:946 2 locks held by kworker/0:15/6665: #0: ffff888018bbc138 ((wq_completion)gfs_recovery){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0 #1: ffffc9000390fd00 ((work_completion)(&jd->jd_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264 1 lock held by syz-executor.2/10931: #0: ffff88802dee00e0 (&type->s_umount_key#98/1){+.+.}-{3:3}, at: alloc_super+0x212/0x920 fs/super.c:228 1 lock held by syz-executor.1/12257: #0: ffff88802dee00e0 (&type->s_umount_key#99){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722 1 lock held by syz-executor.1/12260: #0: ffff88802dee00e0 (&type->s_umount_key#99){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722 1 lock held by syz-executor.1/12262: #0: ffff88802dee00e0 (&type->s_umount_key#99){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722 1 lock held by syz-executor.1/12266: #0: ffff88802dee00e0 (&type->s_umount_key#99){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722 1 lock held by syz-executor.1/12267: #0: ffff88802dee00e0 (&type->s_umount_key#99){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722 1 lock held by syz-executor.1/12270: #0: ffff88802dee00e0 (&type->s_umount_key#99){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722 1 lock held by syz-executor.1/12277: #0: ffff88802dee00e0 (&type->s_umount_key#99){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722 1 lock held by syz-executor.4/12420: #0: ffff88802dee00e0 (&type->s_umount_key#99){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722 1 lock held by syz-executor.4/12423: #0: ffff88802dee00e0 (&type->s_umount_key#99){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722 1 lock held by syz-executor.4/12425: #0: ffff88802dee00e0 (&type->s_umount_key#99){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722 1 lock held by syz-executor.4/12426: #0: ffff88802dee00e0 (&type->s_umount_key#99){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722 1 lock held by syz-executor.4/12428: #0: ffff88802dee00e0 (&type->s_umount_key#99){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722 1 lock held by syz-executor.4/12429: #0: ffff88802dee00e0 (&type->s_umount_key#99){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722 1 lock held by syz-executor.4/12430: #0: ffff88802dee00e0 (&type->s_umount_key#99){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.1.0-syzkaller-11674-g84e57d292203 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1b1/0x290 lib/dump_stack.c:106 nmi_cpu_backtrace+0x46f/0x4f0 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1ba/0x420 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] watchdog+0xcd5/0xd20 kernel/hung_task.c:377 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4428 Comm: klogd Not tainted 6.1.0-syzkaller-11674-g84e57d292203 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:entry_SYSCALL_64+0x0/0x15 arch/x86/entry/entry_64.S:91 Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc <0f> 01 f8 65 48 89 24 25 14 a0 00 00 65 48 8b 24 25 50 98 03 00 6a RSP: 0018:00007ffc477c7e98 EFLAGS: 00000002 RAX: 000000000000002c RBX: 0000000000000000 RCX: 00007f14dbffa0ac RDX: 0000000000000047 RSI: 0000556d4a82e2f0 RDI: 0000000000000003 RBP: 0000556d4a826910 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000014 R13: 0000000000000001 R14: 00007f14dc17577d R15: 00007ffc477c7fa8 FS: 00007f14dbe5e800(0000) GS:ffff8880b9900000(0000) knlGS:ffff8880b9900000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556b68848 CR3: 0000000028431000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: