INFO: task syz.5.42:6408 blocked for more than 143 seconds. Not tainted 6.13.0-rc5-syzkaller-00163-gab75170520d4 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.5.42 state:D stack:23968 pid:6408 tgid:6395 ppid:6088 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5369 [inline] __schedule+0x17fb/0x4be0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6848 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905 rwsem_down_write_slowpath+0xeee/0x13b0 kernel/locking/rwsem.c:1176 __down_write_common kernel/locking/rwsem.c:1304 [inline] __down_write kernel/locking/rwsem.c:1313 [inline] down_write+0x1d7/0x220 kernel/locking/rwsem.c:1578 inode_lock include/linux/fs.h:818 [inline] bch2_direct_write+0x243/0x31a0 fs/bcachefs/fs-io-direct.c:599 bch2_write_iter+0x194/0x2c10 fs/bcachefs/fs-io-buffered.c:1036 iter_file_splice_write+0xbfa/0x1510 fs/splice.c:743 do_splice_from fs/splice.c:941 [inline] direct_splice_actor+0x11b/0x220 fs/splice.c:1164 splice_direct_to_actor+0x586/0xc80 fs/splice.c:1108 do_splice_direct_actor fs/splice.c:1207 [inline] do_splice_direct+0x289/0x3e0 fs/splice.c:1233 do_sendfile+0x564/0x8a0 fs/read_write.c:1363 __do_sys_sendfile64 fs/read_write.c:1424 [inline] __se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1410 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: 0033:0x7f2da7585d29 RSP: 002b:00007f2da8370038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f2da7776080 RCX: 00007f2da7585d29 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000008 RBP: 00007f2da7601b08 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000800000009 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f2da7776080 R15: 00007ffe210af388 INFO: task syz.5.42:6481 blocked for more than 146 seconds. Not tainted 6.13.0-rc5-syzkaller-00163-gab75170520d4 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.5.42 state:D stack:25392 pid:6481 tgid:6395 ppid:6088 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5369 [inline] __schedule+0x17fb/0x4be0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6848 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905 rwsem_down_write_slowpath+0xeee/0x13b0 kernel/locking/rwsem.c:1176 __down_write_common kernel/locking/rwsem.c:1304 [inline] __down_write kernel/locking/rwsem.c:1313 [inline] down_write+0x1d7/0x220 kernel/locking/rwsem.c:1578 inode_lock include/linux/fs.h:818 [inline] bch2_direct_write+0x243/0x31a0 fs/bcachefs/fs-io-direct.c:599 bch2_write_iter+0x194/0x2c10 fs/bcachefs/fs-io-buffered.c:1036 iter_file_splice_write+0xbfa/0x1510 fs/splice.c:743 do_splice_from fs/splice.c:941 [inline] direct_splice_actor+0x11b/0x220 fs/splice.c:1164 splice_direct_to_actor+0x586/0xc80 fs/splice.c:1108 do_splice_direct_actor fs/splice.c:1207 [inline] do_splice_direct+0x289/0x3e0 fs/splice.c:1233 do_sendfile+0x564/0x8a0 fs/read_write.c:1363 __do_sys_sendfile64 fs/read_write.c:1424 [inline] __se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1410 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: 0033:0x7f2da7585d29 RSP: 002b:00007f2da834f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f2da7776160 RCX: 00007f2da7585d29 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000008 RBP: 00007f2da7601b08 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000800000009 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007f2da7776160 R15: 00007ffe210af388 Showing all locks held in the system: 1 lock held by pool_workqueue_/3: 1 lock held by khungtaskd/30: #0: ffffffff8e937ae0 ( rcu_read_lock ){....}-{1:3} , at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] , at: rcu_read_lock include/linux/rcupdate.h:849 [inline] , at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6744 4 locks held by kworker/u8:3/53: #0: ffff88801baeb148 ( (wq_completion)netns ){+.+.}-{0:0} , at: process_one_work kernel/workqueue.c:3204 [inline] , at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3310 #1: ffffc90000bd7d00 ( net_cleanup_work ){+.+.}-{0:0} , at: process_one_work kernel/workqueue.c:3205 [inline] , at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3310 #2: ffffffff8fc94490 ( pernet_ops_rwsem ){++++}-{4:4} , at: cleanup_net+0x16a/0xd50 net/core/net_namespace.c:602 #3: ffff8880352154e8 ( &wg->device_update_lock ){+.+.}-{4:4} , at: wg_destruct+0x110/0x2e0 drivers/net/wireguard/device.c:249 2 locks held by kworker/u8:5/2859: #0: ffff88801ac89148 ( (wq_completion)events_unbound ){+.+.}-{0:0} , at: process_one_work kernel/workqueue.c:3204 [inline] , at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3310 #1: ffffc9000c28fd00 ( (reaper_work).work ){+.+.}-{0:0} , at: psi_task_switch+0x41d/0x7a0 kernel/sched/psi.c:987 4 locks held by kworker/u8:8/3511: #0: ffff88801ac89148 ( (wq_completion)events_unbound ){+.+.}-{0:0} , at: process_one_work kernel/workqueue.c:3204 [inline] , at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3310 #1: ffffc9000d5ffd00 ( (linkwatch_work).work ){+.+.}-{0:0} , at: process_one_work kernel/workqueue.c:3205 [inline] , at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3310 #2: ffffffff8fca0948 ( rtnl_mutex ){+.+.}-{4:4} , at: linkwatch_event+0xe/0x60 net/core/link_watch.c:281 #3: ffffffff8e93cff8 ( rcu_state.exp_mutex ){+.+.}-{4:4} , at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline] , at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:976 1 lock held by dhcpcd/5489: #0: ffffffff8fca0948 ( rtnl_mutex ){+.+.}-{4:4} , at: rtnl_lock net/core/rtnetlink.c:79 [inline] , at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6928 2 locks held by getty/5577: #0: ffff888035fb20a0 ( &tty->ldisc_sem ){++++}-{0:0} , at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc9000332b2f0 ( &ldata->atomic_read_lock ){+.+.}-{4:4} , at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211 8 locks held by kworker/0:8/5909: 5 locks held by syz.5.42/6400: #0: ffff888030c2c420 ( sb_writers #15 ){.+.+}-{0:0} , at: do_ftruncate+0x28b/0x580 fs/open.c:178 #1: ffff8880538908c8 ( &sb->s_type->i_mutex_key #22 ){+.+.}-{4:4} , at: inode_lock include/linux/fs.h:818 [inline] , at: do_truncate fs/open.c:63 [inline] , at: do_ftruncate+0x44e/0x580 fs/open.c:181 #2: ffff888066c80a38 ( &c->snapshot_create_lock ){.+.+}-{4:4} , at: bch2_truncate+0x166/0x2d0 fs/bcachefs/io_misc.c:292 #3: ffff888066c84398 ( &c->btree_trans_barrier ){.+.+}-{0:0} , at: srcu_lock_acquire include/linux/srcu.h:158 [inline] , at: srcu_read_lock include/linux/srcu.h:249 [inline] , at: __bch2_trans_get+0x7e1/0xd30 fs/bcachefs/btree_iter.c:3228 #4: ffff888066ca66d0 ( &c->gc_lock ){++++}-{4:4} , at: bch2_btree_update_start+0x682/0x14e0 fs/bcachefs/btree_update_interior.c:1197 2 locks held by syz.5.42/6408: #0: ffff888030c2c420 ( sb_writers #15 ){.+.+}-{0:0} , at: direct_splice_actor+0x49/0x220 fs/splice.c:1163 #1: ffff8880538908c8 ( &sb->s_type->i_mutex_key #22 ){+.+.}-{4:4} , at: inode_lock include/linux/fs.h:818 [inline] , at: bch2_direct_write+0x243/0x31a0 fs/bcachefs/fs-io-direct.c:599 2 locks held by syz.5.42/6481: #0: ffff888030c2c420 (