INFO: task kworker/0:1H:52 blocked for more than 143 seconds. Not tainted 6.3.0-syzkaller-07919-g6e98b09da931 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:1H state:D stack:27008 pid:52 ppid:2 flags:0x00004000 Workqueue: xfs-log/loop3 xlog_ioend_work Call Trace: context_switch kernel/sched/core.c:5307 [inline] __schedule+0x173b/0x4630 kernel/sched/core.c:6625 schedule+0xc3/0x180 kernel/sched/core.c:6701 schedule_timeout+0xb0/0x310 kernel/time/timer.c:2143 ___down_common+0x33e/0x5e0 kernel/locking/semaphore.c:225 __down_common+0x64/0x250 kernel/locking/semaphore.c:246 down+0x84/0xc0 kernel/locking/semaphore.c:63 xfs_buf_lock+0x154/0x4b0 fs/xfs/xfs_buf.c:1120 xfs_buf_item_unpin+0x200/0x720 fs/xfs/xfs_buf_item.c:547 xfs_trans_committed_bulk+0x346/0x830 fs/xfs/xfs_trans.c:806 xlog_cil_committed+0x26d/0xe40 fs/xfs/xfs_log_cil.c:795 xlog_cil_process_committed+0x159/0x1a0 fs/xfs/xfs_log_cil.c:823 xlog_state_shutdown_callbacks+0x2ba/0x3b0 fs/xfs/xfs_log.c:538 xlog_force_shutdown+0x32c/0x390 fs/xfs/xfs_log.c:3837 xlog_ioend_work+0xad/0x100 fs/xfs/xfs_log.c:1429 process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2390 worker_thread+0xa63/0x1210 kernel/workqueue.c:2537 kthread+0x2b2/0x350 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 INFO: task syz-executor.3:6122 blocked for more than 144 seconds. Not tainted 6.3.0-syzkaller-07919-g6e98b09da931 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:26552 pid:6122 ppid:5005 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5307 [inline] __schedule+0x173b/0x4630 kernel/sched/core.c:6625 schedule+0xc3/0x180 kernel/sched/core.c:6701 xlog_wait+0x16e/0x1e0 fs/xfs/xfs_log_priv.h:617 xlog_force_lsn+0x512/0x770 fs/xfs/xfs_log.c:3340 xfs_log_force_seq+0x1da/0x450 fs/xfs/xfs_log.c:3409 __xfs_trans_commit+0xb4a/0xff0 fs/xfs/xfs_trans.c:1014 xfs_sync_sb_buf+0x14f/0x1e0 fs/xfs/libxfs/xfs_sb.c:1111 xfs_ioc_setlabel fs/xfs/xfs_ioctl.c:1801 [inline] xfs_file_ioctl+0x1313/0x16a0 fs/xfs/xfs_ioctl.c:1899 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fbae568c169 RSP: 002b:00007fbae6496168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fbae57ac050 RCX: 00007fbae568c169 RDX: 00000000200005c0 RSI: 0000000041009432 RDI: 0000000000000004 RBP: 00007fbae56e7ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdd83118ef R14: 00007fbae6496300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/13: #0: ffffffff8cf26030 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518 1 lock held by rcu_tasks_trace/14: #0: ffffffff8cf263f0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518 1 lock held by khungtaskd/28: #0: ffffffff8cf25e60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 2 locks held by kworker/0:1H/52: #0: ffff88801750d138 ((wq_completion)xfs-log/loop3){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363 #1: ffffc90000bd7d20 ((work_completion)(&iclog->ic_end_io_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365 2 locks held by kworker/1:2/1438: #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363 #1: ffffc900055f7d20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365 2 locks held by getty/4730: #0: ffff88814a3d3098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:244 #1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2177 2 locks held by syz-executor.1/5004: #0: ffff88801e75a0e0 (&type->s_umount_key#71){++++}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:361 #1: ffffffff8cf2b538 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline] #1: ffffffff8cf2b538 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x46c/0x890 kernel/rcu/tree_exp.h:992 1 lock held by syz-executor.4/5017: #0: ffffffff8cf2b538 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline] #0: ffffffff8cf2b538 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a3/0x890 kernel/rcu/tree_exp.h:992 2 locks held by kworker/0:10/5471: #0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363 #1: ffffc90005e97d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365 1 lock held by syz-executor.3/6122: #0: ffff8880340ca460 (sb_writers#14 ){.+.+}-{0:0} , at: mnt_want_write_file+0x5e/0x1f0 fs/namespace.c:438 3 locks held by kworker/u4:10/8813: 6 locks held by syz-executor.5/9278: 6 locks held by syz-executor.5/9349: #0: ffff8880869220e0 (&type->s_umount_key#70){++++}-{3:3}, at: do_remount fs/namespace.c:2698 [inline] #0: ffff8880869220e0 (&type->s_umount_key#70){++++}-{3:3}, at: path_mount+0xbd2/0xf80 fs/namespace.c:3361 #1: ffff8880b983bed8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:539 #2: ffff88802c7712b0 (&mm->cid_lock#2){....}-{2:2}, at: mm_cid_get kernel/sched/sched.h:3280 [inline] #2: ffff88802c7712b0 (&mm->cid_lock#2){....}-{2:2}, at: switch_mm_cid kernel/sched/sched.h:3302 [inline] #2: ffff88802c7712b0 (&mm->cid_lock#2){....}-{2:2}, at: prepare_task_switch kernel/sched/core.c:5117 [inline] #2: ffff88802c7712b0 (&mm->cid_lock#2){....}-{2:2}, at: context_switch kernel/sched/core.c:5258 [inline] #2: ffff88802c7712b0 (&mm->cid_lock#2){....}-{2:2}, at: __schedule+0x12e4/0x4630 kernel/sched/core.c:6625 #3: ffffffff8cf1a260 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x2c/0x60 kernel/printk/printk.c:1853 #4: ffffffff8cf25e60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x40 include/linux/rcupdate.h:326 #5: ffff888066f2a7c0 (&p->pi_lock){-.-.}-{2:2}, at: try_to_wake_up+0xb2/0x1230 kernel/sched/core.c:4162 1 lock held by syz-executor.3/9340: #0: ffff88814bd34460 (sb_writers#4){.+.+}-{0:0}, at: do_sendfile+0x5fb/0xff0 fs/read_write.c:1253 2 locks held by syz-executor.3/9363: ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.3.0-syzkaller-07919-g6e98b09da931 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 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+0x187/0x300 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] watchdog+0xec2/0xf00 kernel/hung_task.c:379 kthread+0x2b2/0x350 kernel/kthread.c:379 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: 5095 Comm: kworker/u4:6 Not tainted 6.3.0-syzkaller-07919-g6e98b09da931 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 Workqueue: bat_events batadv_nc_worker RIP: 0010:check_preemption_disabled+0x2/0x110 lib/smp_processor_id.c:13 Code: ff ff ff 0f 1f 44 00 00 f3 0f 1e fa 48 c7 c7 40 03 38 8b 48 c7 c6 80 03 38 8b eb 0c 66 2e 0f 1f 84 00 00 00 00 00 66 90 41 57 <41> 56 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 RSP: 0018:ffffc9000455f9d0 EFLAGS: 00000046 RAX: 0000000000000002 RBX: ffff8880226c0b18 RCX: ffffffff816af4aa RDX: dffffc0000000000 RSI: ffffffff8aea8f40 RDI: ffffffff8b3803a0 RBP: ffffc9000455fa88 R08: dffffc0000000000 R09: fffffbfff205fa54 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880226c0b38 R13: 0000000000000002 R14: ffff8880226c0ac0 R15: 1ffff110044d8158 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200007e0 CR3: 000000000cd30000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lockdep_recursion_finish kernel/locking/lockdep.c:467 [inline] lockdep_hardirqs_on_prepare+0x43c/0x7a0 kernel/locking/lockdep.c:4333 trace_hardirqs_on+0x28/0x40 kernel/trace/trace_preemptirq.c:61 __local_bh_enable_ip+0x168/0x1f0 kernel/softirq.c:401 spin_unlock_bh include/linux/spinlock.h:395 [inline] batadv_nc_purge_paths+0x309/0x3a0 net/batman-adv/network-coding.c:471 batadv_nc_worker+0x30f/0x5c0 net/batman-adv/network-coding.c:722 process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2390 worker_thread+0xa63/0x1210 kernel/workqueue.c:2537 kthread+0x2b2/0x350 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308