INFO: task kworker/1:1H:40 blocked for more than 143 seconds. Not tainted 6.10.0-next-20240719-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:1H state:D stack:25032 pid:40 tgid:40 ppid:2 flags:0x00004000 Workqueue: xfs-log/loop0 xlog_ioend_work Call Trace: context_switch kernel/sched/core.c:5239 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6603 __schedule_loop kernel/sched/core.c:6680 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6695 schedule_timeout+0xb0/0x310 kernel/time/timer.c:2557 ___down_common kernel/locking/semaphore.c:225 [inline] __down_common+0x343/0x7f0 kernel/locking/semaphore.c:246 down+0x84/0xc0 kernel/locking/semaphore.c:63 xfs_buf_lock+0x164/0x510 fs/xfs/xfs_buf.c:1196 xfs_buf_item_unpin+0x1dd/0x710 fs/xfs/xfs_buf_item.c:582 xlog_cil_committed+0x82f/0xf00 fs/xfs/xfs_log_cil.c:910 xlog_cil_process_committed+0x15c/0x1b0 fs/xfs/xfs_log_cil.c:941 xlog_state_shutdown_callbacks+0x2ba/0x3b0 fs/xfs/xfs_log.c:487 xlog_force_shutdown+0x32c/0x390 fs/xfs/xfs_log.c:3530 xlog_ioend_work+0xad/0x100 fs/xfs/xfs_log.c:1244 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 INFO: task syz.0.3242:21661 blocked for more than 144 seconds. Not tainted 6.10.0-next-20240719-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.3242 state:D stack:22512 pid:21661 tgid:21660 ppid:19402 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5239 [inline] __schedule+0x1800/0x4a60 kernel/sched/core.c:6603 __schedule_loop kernel/sched/core.c:6680 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6695 xlog_wait fs/xfs/xfs_log_priv.h:587 [inline] xlog_wait_on_iclog+0x501/0x770 fs/xfs/xfs_log.c:840 xlog_force_lsn+0x523/0x9e0 fs/xfs/xfs_log.c:3066 xfs_log_force_seq+0x1da/0x450 fs/xfs/xfs_log.c:3103 __xfs_trans_commit+0xb98/0x1290 fs/xfs/xfs_trans.c:900 xfs_sync_sb_buf+0x2dc/0x370 fs/xfs/libxfs/xfs_sb.c:1178 xfs_ioc_setlabel fs/xfs/xfs_ioctl.c:1143 [inline] xfs_file_ioctl+0x165b/0x19e0 fs/xfs/xfs_ioctl.c:1298 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f0d22175b59 RSP: 002b:00007f0d22f24048 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f0d22305f60 RCX: 00007f0d22175b59 RDX: 0000000020000080 RSI: 0000000041009432 RDI: 0000000000000006 RBP: 00007f0d221e4e5d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f0d22305f60 R15: 00007ffca67693c8 Showing all locks held in the system: 3 locks held by kworker/0:1/9: #0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] #0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc900000e7d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc900000e7d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffffffff8f60a948 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276 1 lock held by khungtaskd/30: #0: ffffffff8e337a60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline] #0: ffffffff8e337a60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline] #0: ffffffff8e337a60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6695 2 locks held by kworker/1:1H/40: #0: ffff88802c284d48 ((wq_completion)xfs-log/loop0){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] #0: ffff88802c284d48 ((wq_completion)xfs-log/loop0){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc90000b07d00 ((work_completion)(&iclog->ic_end_io_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline] #1: ffffc90000b07d00 ((work_completion)(&iclog->ic_end_io_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 2 locks held by getty/4853: #0: ffff88802ebd10a0 ( &tty->ldisc_sem){++++}-{0:0} , at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc900034b32f0 ( &ldata->atomic_read_lock ){+.+.}-{3:3} , at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211 1 lock held by syz.0.3242/21661: #0: ffff888021aa6420 ( sb_writers #18 ){.+.+}-{0:0} , at: mnt_want_write_file+0x61/0x200 fs/namespace.c:559 2 locks held by kworker/1:2H/21697: #0: ffff88807f12d148 ( (wq_completion)xfs-log/loop2){+.+.}-{0:0} , at: process_one_work kernel/workqueue.c:3206 [inline] , at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc90003fbfd00 ( (work_completion)(&iclog->ic_end_io_work)){+.+.}-{0:0} , at: process_one_work kernel/workqueue.c:3207 [inline] , at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 1 lock held by syz.2.3276/21845: #0: ffff88802b96e420 (sb_writers #18 ){.+.+}-{0:0} , at: mnt_want_write_file+0x61/0x200 fs/namespace.c:559 3 locks held by kworker/u8:2/21935: #0: ffff888029d7b948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline] ffff888029d7b948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312 #1: ffffc900095cfd00 ( (work_completion)(&(&net->ipv6.addr_chk_work)->work) ){+.+.}-{0:0} , at: process_one_work kernel/workqueue.c:3207 [inline] , at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312 #2: ffffffff8f60a948 (rtnl_mutex ){+.+.}-{3:3} , at: addrconf_verify_work+0x19/0x30 net/ipv6/addrconf.c:4734 8 locks held by syz.4.3597/23203: 7 locks held by syz-executor/23335: #0: ffff88802f23a420 ( sb_writers #8 ){.+.+}-{0:0} , at: file_start_write include/linux/fs.h:2876 [inline] , at: vfs_write+0x227/0xc90 fs/read_write.c:586 #1: ffff8880244b9088 ( &of->mutex ){+.+.}-{3:3} , at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325 #2: ffff888022a3a3c8 ( kn->active #49 ){.+.+}-{0:0} , at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326 #3: ffffffff8ef0c528 (nsim_bus_dev_list_lock ){+.+.}-{3:3} , at: del_device_store+0xfc/0x480 drivers/net/netdevsim/bus.c:216 #4: ffff88801cec70e8 ( &dev->mutex ){....}-{3:3} , at: device_lock include/linux/device.h:1009 [inline] , at: __device_driver_lock drivers/base/dd.c:1094 [inline] , at: device_release_driver_internal+0xce/0x7c0 drivers/base/dd.c:1292 #5: ffff88801cec0250 ( &devlink->lock_key #66 ){+.+.}-{3:3} , at: nsim_drv_remove+0x50/0x160 drivers/net/netdevsim/dev.c:1672 #6: ffffffff8f60a948 (rtnl_mutex ){+.+.}-{3:3} , at: nsim_destroy+0x71/0x5c0 drivers/net/netdevsim/netdev.c:773 2 locks held by syz.0.3652/23409: #0: ffffffff8f60a948 ( rtnl_mutex ){+.+.}-{3:3} , at: tun_detach drivers/net/tun.c:698 [inline] , at: tun_chr_close+0x3e/0x1b0 drivers/net/tun.c:3507 #1: ffffffff8e33ce38 ( rcu_state.exp_mutex ){+.+.}-{3:3} , at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline] , at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:967 1 lock held by syz.2.3655/23428: #0: ffffffff8f60a948 ( rtnl_mutex){+.+.}-{3:3} , at: __tun_chr_ioctl+0x48f/0x2400 drivers/net/tun.c:3117 1 lock held by syz.2.3655/23429: #0: ffffffff8f60a948 (rtnl_mutex ){+.+.}-{3:3} , at: tun_detach drivers/net/tun.c:698 [inline] , at: tun_chr_close+0x3e/0x1b0 drivers/net/tun.c:3507 1 lock held by syz.2.3655/23430: #0: ffffffff8f60a948 ( rtnl_mutex ){+.+.}-{3:3} , at: dev_ioctl+0x706/0x1340 net/core/dev_ioctl.c:783 2 locks held by syz.3.3656/23437: #0: ffffffff8f5ef5a8 (vlan_ioctl_mutex ){+.+.}-{3:3} , at: sock_ioctl+0x664/0x8e0 net/socket.c:1303 #1: ffffffff8f60a948