INFO: task kworker/0:1H:93 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:25176 pid:93 ppid:2 flags:0x00004000 Workqueue: xfs-log/loop5 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.5:26814 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.5 state:D stack:23208 pid:26814 ppid:5021 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_wait_on_iclog+0x307/0x4e0 fs/xfs/xfs_log.c:926 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: 0033:0x7f66ace8c169 RSP: 002b:00007f66adcc1168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f66acfabf80 RCX: 00007f66ace8c169 RDX: 00000000200005c0 RSI: 0000000041009432 RDI: 0000000000000004 RBP: 00007f66acee7ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe799b23cf R14: 00007f66adcc1300 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 3 locks held by kworker/u4:2/33: 2 locks held by kworker/0:1H/93: #0: ffff888029d6e938 ((wq_completion)xfs-log/loop5){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363 #1: ffffc900025b7d20 ((work_completion)(&iclog->ic_end_io_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365 2 locks held by getty/4728: #0: ffff88814aa59098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:244 #1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2177 1 lock held by syz-executor.2/5004: #0: ffff88803436e0e0 (&type->s_umount_key#75){++++}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:361 1 lock held by syz-executor.4/5013: #0: ffff888038ad60e0 (&type->s_umount_key#75){++++}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:361 2 locks held by kworker/1:8/5296: #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363 #1: ffffc90005367d20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365 2 locks held by kworker/1:14/5306: #0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363 #1: ffffc90005517d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365 2 locks held by kworker/0:23/12074: #0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2363 #1: ffffc900053e7d20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2365 1 lock held by syz-executor.5/26814: #0: ffff88802fbb0460 (sb_writers#17){.+.+}-{0:0}, at: mnt_want_write_file+0x5e/0x1f0 fs/namespace.c:438 2 locks held by dhcpcd/29699: #0: ffff888032a65610 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:761 [inline] #0: ffff888032a65610 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: __sock_release net/socket.c:652 [inline] #0: ffff888032a65610 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: sock_close+0x9c/0x230 net/socket.c:1397 #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 2 locks held by dhcpcd/29703: #0: ffff888032a61a10 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:761 [inline] #0: ffff888032a61a10 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: __sock_release net/socket.c:652 [inline] #0: ffff888032a61a10 (&sb->s_type->i_mutex_key#9){+.+.}-{3:3}, at: sock_close+0x9c/0x230 net/socket.c:1397 #1: ffffffff8cf2b538 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline] #1: ffffffff8cf2b538 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a3/0x890 kernel/rcu/tree_exp.h:992 2 locks held by syz-executor.5/29705: ============================================= 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: 5246 Comm: kworker/u4:7 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:separate_irq_context kernel/locking/lockdep.c:4587 [inline] RIP: 0010:__lock_acquire+0xced/0x2000 kernel/locking/lockdep.c:5058 Code: e8 48 c1 e8 03 80 3c 38 00 74 12 48 89 ef e8 aa 3c 77 00 48 bf 00 00 00 00 00 fc ff df 4c 89 7d 00 48 8b 44 24 40 0f b6 04 38 <84> c0 0f 85 3a 0c 00 00 48 8b 04 24 8b 18 48 85 db 74 59 83 fb 31 RSP: 0018:ffffc90004f2f998 EFLAGS: 00000046 RAX: 0000000000000000 RBX: ffff88802f9963f8 RCX: ffffffff816a96da RDX: 0000000000000000 RSI: 0000000000000008 RDI: dffffc0000000000 RBP: ffff88802f996458 R08: dffffc0000000000 R09: fffffbfff205fa39 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88802f995940 R13: 1ffff11005f32c7d R14: 0000000000000000 R15: a31e0eccec5aa129 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000556be1cf1680 CR3: 0000000026775000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5691 rcu_lock_acquire+0x2e/0x40 include/linux/rcupdate.h:327 rcu_read_lock include/linux/rcupdate.h:773 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline] batadv_nc_worker+0xc5/0x5c0 net/batman-adv/network-coding.c:719 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